# configure.ac for GCC
# Process this file with autoconf to generate a configuration script.
# Copyright (C) 1997-2014 Free Software Foundation, Inc.
#This file is part of GCC.
#GCC is free software; you can redistribute it and/or modify it under
#the terms of the GNU General Public License as published by the Free
#Software Foundation; either version 3, or (at your option) any later
#version.
#GCC is distributed in the hope that it will be useful, but WITHOUT
#ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
#FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
#for more details.
#You should have received a copy of the GNU General Public License
#along with GCC; see the file COPYING3. If not see
#.
# --------------------------------
# Initialization and sanity checks
# --------------------------------
AC_PREREQ(2.64)
AC_INIT
AC_CONFIG_SRCDIR(tree.c)
AC_CONFIG_HEADER(auto-host.h:config.in)
gcc_version=`cat $srcdir/BASE-VER`
# Determine the host, build, and target systems
AC_CANONICAL_BUILD
AC_CANONICAL_HOST
AC_CANONICAL_TARGET
# Determine the noncanonical target name, for directory use.
ACX_NONCANONICAL_TARGET
# Determine the target- and build-specific subdirectories
GCC_TOPLEV_SUBDIRS
# Set program_transform_name
AC_ARG_PROGRAM
# Check for bogus environment variables.
# Test if LIBRARY_PATH contains the notation for the current directory
# since this would lead to problems installing/building glibc.
# LIBRARY_PATH contains the current directory if one of the following
# is true:
# - one of the terminals (":" and ";") is the first or last sign
# - two terminals occur directly after each other
# - the path contains an element with a dot in it
AC_MSG_CHECKING(LIBRARY_PATH variable)
changequote(,)dnl
case ${LIBRARY_PATH} in
[:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
library_path_setting="contains current directory"
;;
*)
library_path_setting="ok"
;;
esac
changequote([,])dnl
AC_MSG_RESULT($library_path_setting)
if test "$library_path_setting" != "ok"; then
AC_MSG_ERROR([
*** LIBRARY_PATH shouldn't contain the current directory when
*** building gcc. Please change the environment variable
*** and run configure again.])
fi
# Test if GCC_EXEC_PREFIX contains the notation for the current directory
# since this would lead to problems installing/building glibc.
# GCC_EXEC_PREFIX contains the current directory if one of the following
# is true:
# - one of the terminals (":" and ";") is the first or last sign
# - two terminals occur directly after each other
# - the path contains an element with a dot in it
AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
changequote(,)dnl
case ${GCC_EXEC_PREFIX} in
[:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
gcc_exec_prefix_setting="contains current directory"
;;
*)
gcc_exec_prefix_setting="ok"
;;
esac
changequote([,])dnl
AC_MSG_RESULT($gcc_exec_prefix_setting)
if test "$gcc_exec_prefix_setting" != "ok"; then
AC_MSG_ERROR([
*** GCC_EXEC_PREFIX shouldn't contain the current directory when
*** building gcc. Please change the environment variable
*** and run configure again.])
fi
# -----------
# Directories
# -----------
# Specify the local prefix
local_prefix=
AC_ARG_WITH(local-prefix,
[AS_HELP_STRING([--with-local-prefix=DIR],
[specifies directory to put local include])],
[case "${withval}" in
yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
no) ;;
*) local_prefix=$with_local_prefix ;;
esac])
# Default local prefix if it is empty
if test x$local_prefix = x; then
local_prefix=/usr/local
fi
# Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
# passed in by the toplevel make and thus we'd get different behavior
# depending on where we built the sources.
gcc_gxx_include_dir=
# Specify the g++ header file directory
AC_ARG_WITH(gxx-include-dir,
[AS_HELP_STRING([--with-gxx-include-dir=DIR],
[specifies directory to put g++ header files])],
[case "${withval}" in
yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
no) ;;
*) gcc_gxx_include_dir=$with_gxx_include_dir ;;
esac])
# This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
if test x${gcc_gxx_include_dir} = x; then
if test x${enable_version_specific_runtime_libs} = xyes; then
gcc_gxx_include_dir='${libsubdir}/include/c++'
else
libstdcxx_incdir='include/c++/$(version)'
if test x$host != x$target; then
libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
fi
gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
fi
fi
gcc_gxx_include_dir_add_sysroot=0
if test "${with_sysroot+set}" = set; then
gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
if test "${gcc_gxx_without_sysroot}"; then
gcc_gxx_include_dir="${gcc_gxx_without_sysroot}"
gcc_gxx_include_dir_add_sysroot=1
fi
fi
AC_ARG_WITH(cpp_install_dir,
[AC_HELP_STRING([--with-cpp-install-dir=DIR],
[install the user visible C preprocessor in DIR
(relative to PREFIX) as well as PREFIX/bin])],
[if test x$withval = xyes; then
AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
elif test x$withval != xno; then
cpp_install_dir=$withval
fi])
# We would like to our source tree to be readonly. However when releases or
# pre-releases are generated, the flex/bison generated files as well as the
# various formats of manuals need to be included along with the rest of the
# sources. Therefore we have --enable-generated-files-in-srcdir to do
# just that.
AC_MSG_CHECKING([whether to place generated files in the source directory])
dnl generated-files-in-srcdir is disabled by default
AC_ARG_ENABLE(generated-files-in-srcdir,
[AS_HELP_STRING([--enable-generated-files-in-srcdir],
[put copies of generated files in source dir
intended for creating source tarballs for users
without texinfo bison or flex])],
generated_files_in_srcdir=$enableval,
generated_files_in_srcdir=no)
AC_MSG_RESULT($generated_files_in_srcdir)
if test "$generated_files_in_srcdir" = "yes"; then
GENINSRC=''
else
GENINSRC='#'
fi
AC_SUBST(GENINSRC)
# -------------------
# Find default linker
# -------------------
# With GNU ld
AC_ARG_WITH(gnu-ld,
[AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
gnu_ld_flag="$with_gnu_ld",
gnu_ld_flag=no)
# With pre-defined ld
AC_ARG_WITH(ld,
[AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
DEFAULT_LINKER="$with_ld")
if test x"${DEFAULT_LINKER+set}" = x"set"; then
if test ! -x "$DEFAULT_LINKER"; then
AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
gnu_ld_flag=yes
fi
AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
[Define to enable the use of a default linker.])
fi
AC_MSG_CHECKING([whether a default linker was specified])
if test x"${DEFAULT_LINKER+set}" = x"set"; then
if test x"$gnu_ld_flag" = x"no"; then
AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
else
AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
fi
else
AC_MSG_RESULT(no)
fi
# With demangler in GNU ld
AC_ARG_WITH(demangler-in-ld,
[AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
demangler_in_ld="$with_demangler_in_ld",
demangler_in_ld=yes)
# ----------------------
# Find default assembler
# ----------------------
# With GNU as
AC_ARG_WITH(gnu-as,
[AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
gas_flag="$with_gnu_as",
gas_flag=no)
AC_ARG_WITH(as,
[AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
DEFAULT_ASSEMBLER="$with_as")
if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
if test ! -x "$DEFAULT_ASSEMBLER"; then
AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
gas_flag=yes
fi
AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
[Define to enable the use of a default assembler.])
fi
AC_MSG_CHECKING([whether a default assembler was specified])
if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
if test x"$gas_flag" = x"no"; then
AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
else
AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
fi
else
AC_MSG_RESULT(no)
fi
# ---------------
# Find C compiler
# ---------------
# If a non-executable a.out is present (e.g. created by GNU as above even if
# invoked with -v only), the IRIX 6 native ld just overwrites the existing
# file, even when creating an executable, so an execution test fails.
# Remove possible default executable files to avoid this.
#
# FIXME: This really belongs into AC_PROG_CC and can be removed once
# Autoconf includes it.
rm -f a.out a.exe b.out
# Find the native compiler
AC_PROG_CC
AC_PROG_CXX
ACX_PROG_GNAT([-I"$srcdir"/ada])
# Remove the -O2: for historical reasons, unless bootstrapping we prefer
# optimizations to be activated explicitly by the toplevel.
case "$CC" in
*/prev-gcc/xgcc*) ;;
*) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" `
CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;;
esac
AC_SUBST(CFLAGS)
AC_SUBST(CXXFLAGS)
# Determine PICFLAG for target gnatlib.
GCC_PICFLAG_FOR_TARGET
AC_SUBST(PICFLAG_FOR_TARGET)
# -------------------------
# Check C compiler features
# -------------------------
AC_USE_SYSTEM_EXTENSIONS
AC_PROG_CPP
AC_C_INLINE
AC_SYS_LARGEFILE
# sizeof(char) is 1 by definition.
AC_CHECK_SIZEOF(void *)
AC_CHECK_SIZEOF(short)
AC_CHECK_SIZEOF(int)
AC_CHECK_SIZEOF(long)
AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
GCC_STDINT_TYPES
if test x"$ac_cv_c_uint64_t" = x"no" -o x"$ac_cv_c_int64_t" = x"no"; then
AC_MSG_ERROR([uint64_t or int64_t not found])
fi
# check what underlying integer type int64_t uses
AC_LANG_PUSH(C++)
AC_CACHE_CHECK(for int64_t underlying type, ac_cv_int64_t_type, [
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#ifdef HAVE_STDINT_H
#include
#endif
template struct X { };
template <>
struct X { typedef long t; };
]], [[X::t x;]])],[ac_cv_int64_t_type=long],[ac_cv_int64_t_type="long long"])])
if test "$ac_cv_int64_t_type" = "long"; then
AC_DEFINE(INT64_T_IS_LONG, 1,
[Define if int64_t uses long as underlying type.])
else
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#ifdef HAVE_STDINT_H
#include
#endif
template struct X { };
template <>
struct X { typedef long long t; };
]], [[X::t x;]])],[],[AC_MSG_ERROR([error verifying int64_t uses long long])])
fi
AC_LANG_POP(C++)
# ---------------------
# Warnings and checking
# ---------------------
# Check $CC warning features (if it's GCC).
# We want to use -pedantic, but we don't want warnings about
# * 'long long'
# * variadic macros
# * overlong strings
# * C++11 narrowing conversions in { }
# So, we only use -pedantic if we can disable those warnings.
# In stage 1, disable -Wformat warnings from old GCCs about new % codes
AC_ARG_ENABLE(build-format-warnings,
AS_HELP_STRING([--disable-build-format-warnings],[don't use -Wformat while building GCC]),
[],[enable_build_format_warnings=yes])
AS_IF([test $enable_build_format_warnings = no],
[wf_opt=-Wno-format],[wf_opt=])
ACX_PROG_CC_WARNING_OPTS(
m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual $wf_opt])), [loose_warn])
ACX_PROG_CC_WARNING_OPTS(
m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
[c_loose_warn])
ACX_PROG_CC_WARNING_OPTS(
m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
ACX_PROG_CC_WARNING_OPTS(
m4_quote(m4_do([-Woverloaded-virtual])), [strict_warn])
ACX_PROG_CC_WARNING_OPTS(
m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
[-Wno-overlength-strings])), [strict_warn])
ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
# The above macros do nothing if the compiler is not GCC. However, the
# Makefile has more goo to add other flags, so these variables are used
# to enable warnings only for GCC.
warn_cflags=
warn_cxxflags=
if test "x$GCC" = "xyes"; then
warn_cflags='$(GCC_WARN_CFLAGS)'
warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
fi
AC_SUBST(warn_cflags)
AC_SUBST(warn_cxxflags)
# Disable exceptions and RTTI if building with g++
ACX_PROG_CC_WARNING_OPTS(
m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
[noexception_flags])
# Enable expensive internal checks
is_release=
if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
is_release=yes
fi
AC_ARG_ENABLE(checking,
[AS_HELP_STRING([[--enable-checking[=LIST]]],
[enable expensive run-time checks. With LIST,
enable only specific categories of checks.
Categories are: yes,no,all,none,release.
Flags are: assert,df,fold,gc,gcac,gimple,misc,
rtlflag,rtl,runtime,tree,valgrind,types])],
[ac_checking_flags="${enableval}"],[
# Determine the default checks.
if test x$is_release = x ; then
ac_checking_flags=yes
else
ac_checking_flags=release
fi])
IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
for check in release $ac_checking_flags
do
case $check in
# these set all the flags to specific states
yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
ac_fold_checking= ; ac_gc_checking=1 ;
ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
ac_tree_checking=1 ; ac_valgrind_checking= ;
ac_types_checking=1 ;;
no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
ac_fold_checking= ; ac_gc_checking= ;
ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
ac_rtlflag_checking= ; ac_runtime_checking= ;
ac_tree_checking= ; ac_valgrind_checking= ;
ac_types_checking= ;;
all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
ac_fold_checking=1 ; ac_gc_checking=1 ;
ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
ac_tree_checking=1 ; ac_valgrind_checking= ;
ac_types_checking=1 ;;
release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
ac_fold_checking= ; ac_gc_checking= ;
ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
ac_rtlflag_checking= ; ac_runtime_checking=1 ;
ac_tree_checking= ; ac_valgrind_checking= ;
ac_types_checking= ;;
# these enable particular checks
assert) ac_assert_checking=1 ;;
df) ac_df_checking=1 ;;
fold) ac_fold_checking=1 ;;
gc) ac_gc_checking=1 ;;
gcac) ac_gc_always_collect=1 ;;
gimple) ac_gimple_checking=1 ;;
misc) ac_checking=1 ;;
rtl) ac_rtl_checking=1 ;;
rtlflag) ac_rtlflag_checking=1 ;;
runtime) ac_runtime_checking=1 ;;
tree) ac_tree_checking=1 ;;
types) ac_types_checking=1 ;;
valgrind) ac_valgrind_checking=1 ;;
*) AC_MSG_ERROR(unknown check category $check) ;;
esac
done
IFS="$ac_save_IFS"
nocommon_flag=""
if test x$ac_checking != x ; then
AC_DEFINE(ENABLE_CHECKING, 1,
[Define if you want more run-time sanity checks. This one gets a grab
bag of miscellaneous but relatively cheap checks.])
nocommon_flag=-fno-common
fi
AC_SUBST(nocommon_flag)
if test x$ac_df_checking != x ; then
AC_DEFINE(ENABLE_DF_CHECKING, 1,
[Define if you want more run-time sanity checks for dataflow.])
fi
if test x$ac_assert_checking != x ; then
AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
[Define if you want assertions enabled. This is a cheap check.])
fi
if test x$ac_gimple_checking != x ; then
AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
[Define if you want operations on GIMPLE (the basic data structure of
the high-level optimizers) to be checked for dynamic type safety at
runtime. This is moderately expensive.])
fi
GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
if test x$ac_runtime_checking != x ; then
AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
[Define if you want runtime assertions enabled. This is a cheap check.])
fi
if test x$ac_tree_checking != x ; then
AC_DEFINE(ENABLE_TREE_CHECKING, 1,
[Define if you want all operations on trees (the basic data
structure of the front ends) to be checked for dynamic type safety
at runtime. This is moderately expensive. The tree browser debugging
routines will also be enabled by this option.
])
TREEBROWSER=tree-browser.o
TREECHECKING=yes
fi
if test x$ac_types_checking != x ; then
AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
[Define if you want all gimple types to be verified after gimplifiation.
This is cheap.
])
fi
AC_SUBST(TREEBROWSER)
AC_SUBST(TREECHECKING)
if test x$ac_rtl_checking != x ; then
AC_DEFINE(ENABLE_RTL_CHECKING, 1,
[Define if you want all operations on RTL (the basic data structure
of the optimizer and back end) to be checked for dynamic type safety
at runtime. This is quite expensive.])
fi
if test x$ac_rtlflag_checking != x ; then
AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
[Define if you want RTL flag accesses to be checked against the RTL
codes that are supported for each access macro. This is relatively
cheap.])
fi
if test x$ac_gc_checking != x ; then
AC_DEFINE(ENABLE_GC_CHECKING, 1,
[Define if you want the garbage collector to do object poisoning and
other memory allocation checks. This is quite expensive.])
fi
if test x$ac_gc_always_collect != x ; then
AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
[Define if you want the garbage collector to operate in maximally
paranoid mode, validating the entire heap and collecting garbage at
every opportunity. This is extremely expensive.])
fi
if test x$ac_fold_checking != x ; then
AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
[Define if you want fold checked that it never destructs its argument.
This is quite expensive.])
fi
valgrind_path_defines=
valgrind_command=
dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
dnl # an if statement. This was the source of very frustrating bugs
dnl # in converting to autoconf 2.5x!
AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
# It is certainly possible that there's valgrind but no valgrind.h.
# GCC relies on making annotations so we must have both.
AC_MSG_CHECKING(for VALGRIND_DISCARD in )
AC_PREPROC_IFELSE([AC_LANG_SOURCE(
[[#include
#ifndef VALGRIND_DISCARD
#error VALGRIND_DISCARD not defined
#endif]])],
[gcc_cv_header_valgrind_memcheck_h=yes],
[gcc_cv_header_valgrind_memcheck_h=no])
AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
AC_MSG_CHECKING(for VALGRIND_DISCARD in )
AC_PREPROC_IFELSE([AC_LANG_SOURCE(
[[#include
#ifndef VALGRIND_DISCARD
#error VALGRIND_DISCARD not defined
#endif]])],
[gcc_cv_header_memcheck_h=yes],
[gcc_cv_header_memcheck_h=no])
AC_MSG_RESULT($gcc_cv_header_memcheck_h)
if test $gcc_cv_header_valgrind_memcheck_h = yes; then
AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
[Define if valgrind's valgrind/memcheck.h header is installed.])
fi
if test $gcc_cv_header_memcheck_h = yes; then
AC_DEFINE(HAVE_MEMCHECK_H, 1,
[Define if valgrind's memcheck.h header is installed.])
fi
if test x$ac_valgrind_checking != x ; then
AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
[$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
if test "x$valgrind_path" = "x" \
|| (test $have_valgrind_h = no \
&& test $gcc_cv_header_memcheck_h = no \
&& test $gcc_cv_header_valgrind_memcheck_h = no); then
AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
fi
valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
valgrind_command="$valgrind_path -q"
AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
[Define if you want to run subprograms and generated programs
through valgrind (a memory checker). This is extremely expensive.])
fi
AC_SUBST(valgrind_path_defines)
AC_SUBST(valgrind_command)
# Enable code coverage collection
AC_ARG_ENABLE(coverage,
[AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
[enable compiler's code coverage collection.
Use to measure compiler performance and locate
unused parts of the compiler. With LEVEL, specify
optimization. Values are opt, noopt,
default is noopt])],
[case "${enableval}" in
yes|noopt)
coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
;;
opt)
coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
;;
no)
# a.k.a. --disable-coverage
coverage_flags=""
;;
*)
AC_MSG_ERROR(unknown coverage setting $enableval)
;;
esac],
[coverage_flags=""])
AC_SUBST(coverage_flags)
AC_ARG_ENABLE(gather-detailed-mem-stats,
[AS_HELP_STRING([--enable-gather-detailed-mem-stats],
[enable detailed memory allocation stats gathering])], [],
[enable_gather_detailed_mem_stats=no])
gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
[Define to enable detailed memory allocation stats gathering.])
AC_ARG_ENABLE(valgrind-annotations,
[AS_HELP_STRING([--enable-valgrind-annotations],
[enable valgrind runtime interaction])], [],
[enable_valgrind_annotations=no])
if test x$enable_valgrind_annotations != xno \
|| test x$ac_valgrind_checking != x; then
if (test $have_valgrind_h = no \
&& test $gcc_cv_header_memcheck_h = no \
&& test $gcc_cv_header_valgrind_memcheck_h = no); then
AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h])
fi
AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1,
[Define to get calls to the valgrind runtime enabled.])
fi
# -------------------------------
# Miscenalleous configure options
# -------------------------------
# With stabs
AC_ARG_WITH(stabs,
[AS_HELP_STRING([--with-stabs],
[arrange to use stabs instead of host debug format])],
stabs="$with_stabs",
stabs=no)
# Determine whether or not multilibs are enabled.
AC_ARG_ENABLE(multilib,
[AS_HELP_STRING([--enable-multilib],
[enable library support for multiple ABIs])],
[], [enable_multilib=yes])
AC_SUBST(enable_multilib)
# Determine whether or not multiarch is enabled.
AC_ARG_ENABLE(multiarch,
[AS_HELP_STRING([--enable-multiarch],
[enable support for multiarch paths])],
[case "${enableval}" in
yes|no|auto) enable_multiarch=$enableval;;
*) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
esac], [enable_multiarch=auto])
if test x${enable_multiarch} = xauto; then
if test x${with_native_system_header_dir} != x; then
ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
enable_multiarch=no
fi
if test x$host != x$target && test "x$with_sysroot" = x; then
ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
enable_multiarch=no
fi
fi
AC_MSG_CHECKING(for multiarch configuration)
AC_SUBST(enable_multiarch)
AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
# needed for setting the multiarch name for soft-float/hard-float ABIs
AC_SUBST(with_cpu)
AC_SUBST(with_float)
# Enable __cxa_atexit for C++.
AC_ARG_ENABLE(__cxa_atexit,
[AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
[], [])
# Enable C extension for decimal float if target supports it.
GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
[Define to 1 to enable decimal float extension to C.])
# Use default_decimal_float for dependency.
enable_decimal_float=$default_decimal_float
bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
[Define to 1 to specify that we are using the BID decimal floating
point format instead of DPD])
# Enable C extension for fixed-point arithmetic.
AC_ARG_ENABLE(fixed-point,
[AS_HELP_STRING([--enable-fixed-point],
[enable fixed-point arithmetic extension to C])],
[],
[
case $target in
arm*)
enable_fixed_point=yes
;;
mips*-*-*)
enable_fixed_point=yes
;;
*)
AC_MSG_WARN([fixed-point is not supported for this target, ignored])
enable_fixed_point=no
;;
esac
])
AC_SUBST(enable_fixed_point)
fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
[Define to 1 to enable fixed-point arithmetic extension to C.])
# Enable threads
# Pass with no value to take the default
# Pass with a value to specify a thread package
AC_ARG_ENABLE(threads,
[AS_HELP_STRING([[--enable-threads[=LIB]]],
[enable thread usage for target GCC,
using LIB thread package])],,
[enable_threads=''])
AC_ARG_ENABLE(tls,
[AS_HELP_STRING([--enable-tls],
[enable or disable generation of tls code
overriding the assembler check for tls support])],
[
case $enable_tls in
yes | no) ;;
*) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
Valid choices are 'yes' and 'no'.]) ;;
esac
], [enable_tls=''])
AC_ARG_ENABLE(objc-gc,
[AS_HELP_STRING([--enable-objc-gc],
[enable the use of Boehm's garbage collector with
the GNU Objective-C runtime])],
if test x$enable_objc_gc = xno; then
objc_boehm_gc=''
else
objc_boehm_gc=1
fi,
objc_boehm_gc='')
AC_ARG_WITH(dwarf2,
[AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
dwarf2="$with_dwarf2",
dwarf2=no)
AC_ARG_ENABLE(shared,
[AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
[
case $enable_shared in
yes | no) ;;
*)
enable_shared=no
IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
for pkg in $enableval; do
if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
enable_shared=yes
fi
done
IFS="$ac_save_ifs"
;;
esac
], [enable_shared=yes])
AC_SUBST(enable_shared)
AC_ARG_WITH([native-system-header-dir],
[ --with-native-system-header-dir=dir
use dir as the directory to look for standard
system header files in. Defaults to /usr/include.],
[
case ${with_native_system_header_dir} in
yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
/* | [[A-Za-z]]:[[\\/]]*) ;;
*) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
esac
configured_native_system_header_dir="${withval}"
], [configured_native_system_header_dir=])
AC_ARG_WITH(build-sysroot,
[AS_HELP_STRING([--with-build-sysroot=sysroot],
[use sysroot as the system root during the build])],
[if test x"$withval" != x ; then
SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
fi],
[SYSROOT_CFLAGS_FOR_TARGET=])
AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
if test "x$prefix" = xNONE; then
test_prefix=/usr/local
else
test_prefix=$prefix
fi
if test "x$exec_prefix" = xNONE; then
test_exec_prefix=$test_prefix
else
test_exec_prefix=$exec_prefix
fi
AC_ARG_WITH(sysroot,
[AS_HELP_STRING([[--with-sysroot[=DIR]]],
[search for usr/lib, usr/include, et al, within DIR])],
[
case ${with_sysroot} in
yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
*) TARGET_SYSTEM_ROOT=$with_sysroot ;;
esac
TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
case ${TARGET_SYSTEM_ROOT} in
"${test_prefix}"|"${test_prefix}/"*|\
"${test_exec_prefix}"|"${test_exec_prefix}/"*|\
'${prefix}'|'${prefix}/'*|\
'${exec_prefix}'|'${exec_prefix}/'*)
t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
TARGET_SYSTEM_ROOT_DEFINE="$t"
;;
esac
], [
TARGET_SYSTEM_ROOT=
TARGET_SYSTEM_ROOT_DEFINE=
CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
])
AC_SUBST(TARGET_SYSTEM_ROOT)
AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
AC_ARG_WITH(specs,
[AS_HELP_STRING([--with-specs=SPECS],
[add SPECS to driver command-line processing])],
[CONFIGURE_SPECS=$withval],
[CONFIGURE_SPECS=]
)
AC_SUBST(CONFIGURE_SPECS)
ACX_PKGVERSION([GCC])
ACX_BUGURL([http://gcc.gnu.org/bugs.html])
# Sanity check enable_languages in case someone does not run the toplevel
# configure # script.
AC_ARG_ENABLE(languages,
[AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
[case ,${enable_languages}, in
,,|,yes,)
# go safe -- we cannot be much sure without the toplevel
# configure's
# analysis of which target libs are present and usable
enable_languages=c
;;
*,all,*)
AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
;;
*,c,*)
;;
*)
enable_languages=c,${enable_languages}
;;
esac],
[enable_languages=c])
AC_ARG_WITH(multilib-list,
[AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])],
:,
with_multilib_list=default)
# -------------------------
# Checks for other programs
# -------------------------
AC_PROG_MAKE_SET
# Find some useful tools
AC_PROG_AWK
# We need awk to create options.c and options.h.
# Bail out if it's missing.
case ${AWK} in
"") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
esac
gcc_AC_PROG_LN_S
ACX_PROG_LN($LN_S)
AC_PROG_RANLIB
ranlib_flags=""
AC_SUBST(ranlib_flags)
gcc_AC_PROG_INSTALL
# See if cmp has --ignore-initial.
gcc_AC_PROG_CMP_IGNORE_INITIAL
# See if we have the mktemp command.
AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
# See if makeinfo has been installed and is modern enough
# that we can use it.
ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
[GNU texinfo.* \([0-9][0-9.]*\)],
[4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
if test $gcc_cv_prog_makeinfo_modern = no; then
AC_MSG_WARN([
*** Makeinfo is missing or too old.
*** Info documentation will not be built.])
BUILD_INFO=
else
BUILD_INFO=info
fi
AC_SUBST(BUILD_INFO)
# Is pod2man recent enough to regenerate manpages?
AC_MSG_CHECKING([for recent Pod::Man])
if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
AC_MSG_RESULT(yes)
GENERATED_MANPAGES=generated-manpages
else
AC_MSG_RESULT(no)
GENERATED_MANPAGES=
fi
AC_SUBST(GENERATED_MANPAGES)
MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
# How about lex?
dnl Don't use AC_PROG_LEX; we insist on flex.
dnl LEXLIB is not useful in gcc.
AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
# Bison?
AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
# Binutils are not build modules, unlike bison/flex/makeinfo. So we
# check for build == host before using them.
# NM
if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
&& test -d ../binutils ; then
NM='${objdir}/../binutils/nm-new'
else
AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
fi
# AR
if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
&& test -d ../binutils ; then
AR='${objdir}/../binutils/ar'
else
AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
fi
# --------------------
# Checks for C headers
# --------------------
# Need to reject headers which give warnings, so that the -Werror bootstrap
# works later. *sigh* This needs to come before all header checks.
AC_PROG_CPP_WERROR
AC_HEADER_STDC
AC_HEADER_TIME
ACX_HEADER_STRING
AC_HEADER_SYS_WAIT
AC_HEADER_TIOCGWINSZ
AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
sys/resource.h sys/param.h sys/times.h sys/stat.h \
direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
# Check for thread headers.
AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
# These tests can't be done till we know if we have limits.h.
gcc_AC_C_CHAR_BIT
AC_C_BIGENDIAN
# ----------------------
# Checks for C++ headers
# ----------------------
dnl Autoconf will give an error in the configure script if there is no
dnl C++ preprocessor. Hack to prevent that.
m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
AC_PROG_CXXCPP
m4_popdef([AC_MSG_ERROR])[]dnl
AC_LANG_PUSH(C++)
AC_CHECK_HEADERS(unordered_map)
AC_CHECK_HEADERS(tr1/unordered_map)
AC_CHECK_HEADERS(ext/hash_map)
AC_LANG_POP(C++)
# --------
# Dependency checking.
# --------
AC_LANG_PUSH(C++)
ZW_CREATE_DEPDIR
AC_CONFIG_COMMANDS([gccdepdir],[
${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
for lang in $subdirs c-family common
do
${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
ZW_PROG_COMPILER_DEPENDENCIES([CXX])
AC_LANG_POP(C++)
# --------
# UNSORTED
# --------
# These libraries may be used by collect2.
# We may need a special search path to get them linked.
AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
[save_LIBS="$LIBS"
for libs in '' -lld -lmld \
'-L/usr/lib/cmplrs/cc2.11 -lmld' \
'-L/usr/lib/cmplrs/cc3.11 -lmld'
do
LIBS="$libs"
AC_TRY_LINK_FUNC(ldopen,
[gcc_cv_collect2_libs="$libs"; break])
done
LIBS="$save_LIBS"
test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
case $gcc_cv_collect2_libs in
"none required") ;;
*) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
esac
AC_SUBST(COLLECT2_LIBS)
# When building Ada code on Alpha, we need exc_resume which is usually in
# -lexc. So test for it.
save_LIBS="$LIBS"
LIBS=
AC_SEARCH_LIBS(exc_resume, exc)
GNAT_LIBEXC="$LIBS"
LIBS="$save_LIBS"
AC_SUBST(GNAT_LIBEXC)
# To support -mcpu=native on Solaris/SPARC, we need libkstat.
save_LIBS="$LIBS"
LIBS=
AC_SEARCH_LIBS(kstat_open, kstat)
EXTRA_GCC_LIBS="$LIBS"
LIBS="$save_LIBS"
AC_SUBST(EXTRA_GCC_LIBS)
# Some systems put ldexp and frexp in libm instead of libc; assume
# they're both in the same place. jcf-dump needs them.
save_LIBS="$LIBS"
LIBS=
AC_SEARCH_LIBS(ldexp, m)
LDEXP_LIB="$LIBS"
LIBS="$save_LIBS"
AC_SUBST(LDEXP_LIB)
# Use only if it exists,
# doesn't clash with , declares intmax_t and defines
# PRId64
AC_MSG_CHECKING(for inttypes.h)
AC_CACHE_VAL(gcc_cv_header_inttypes_h,
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
[[#define __STDC_FORMAT_MACROS
#include
#include ]],
[[intmax_t i = -1;
#ifndef PRId64
choke me
#endif]])],
[gcc_cv_header_inttypes_h=yes],
[gcc_cv_header_inttypes_h=no])])
AC_MSG_RESULT($gcc_cv_header_inttypes_h)
if test $gcc_cv_header_inttypes_h = yes; then
AC_DEFINE(HAVE_INTTYPES_H, 1,
[Define if you have a working header file.])
fi
dnl Disabled until we have a complete test for buggy enum bitfields.
dnl gcc_AC_C_ENUM_BF_UNSIGNED
define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
putchar_unlocked putc_unlocked)
AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
popen sysconf strsignal getrusage nl_langinfo \
gettimeofday mbstowcs wcswidth mmap setlocale \
gcc_UNLOCKED_FUNCS madvise)
if test x$ac_cv_func_mbstowcs = xyes; then
AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
[ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include
int main()
{
mbstowcs(0, "", 0);
return 0;
}]])],
[gcc_cv_func_mbstowcs_works=yes],
[gcc_cv_func_mbstowcs_works=no],
[gcc_cv_func_mbstowcs_works=yes])])
if test x$gcc_cv_func_mbstowcs_works = xyes; then
AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
[Define this macro if mbstowcs does not crash when its
first argument is NULL.])
fi
fi
AC_CHECK_TYPE(ssize_t, int)
AC_CHECK_TYPE(caddr_t, char *)
GCC_AC_FUNC_MMAP_BLACKLIST
case "${host}" in
*-*-*vms*)
# Under VMS, vfork works very differently than on Unix. The standard test
# won't work, and it isn't easily adaptable. It makes more sense to
# just force it.
ac_cv_func_vfork_works=yes
;;
esac
AC_FUNC_FORK
# g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
# iconv() prototype.
AC_LANG_PUSH([C++])
AM_ICONV
AC_LANG_POP([C++])
# Until we have in-tree GNU iconv:
LIBICONV_DEP=
AC_SUBST(LIBICONV_DEP)
AM_LC_MESSAGES
AM_LANGINFO_CODESET
# We will need to find libiberty.h and ansidecl.h
saved_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
saved_CXXFLAGS="$CXXFLAGS"
CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
stpcpy strnlen strsignal strstr strverscmp \
errno snprintf vsnprintf vasprintf malloc realloc calloc \
free basename getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
#include "ansidecl.h"
#include "system.h"])
gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
#include "ansidecl.h"
#include "system.h"
#ifdef HAVE_SYS_RESOURCE_H
#include
#endif
])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include "ansidecl.h"
#include "system.h"
#ifdef HAVE_SYS_RESOURCE_H
#include
#endif
]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
[Define to `long' if doesn't define.])])
# On AIX 5.2, conflicts with , as both define incompatible
# FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
# in collect2.c, isn't visible, but the configure test below needs
# to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
gcc_AC_CHECK_DECLS(ldgetname, , ,[
#include "ansidecl.h"
#include "system.h"
#ifdef HAVE_LDFCN_H
#undef FREAD
#undef FWRITE
#include
#endif
])
gcc_AC_CHECK_DECLS(times, , ,[
#include "ansidecl.h"
#include "system.h"
#ifdef HAVE_SYS_TIMES_H
#include
#endif
])
gcc_AC_CHECK_DECLS(sigaltstack, , ,[
#include "ansidecl.h"
#include "system.h"
#include
])
# g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which hides the madvise()
# prototype.
AC_LANG_PUSH([C++])
gcc_AC_CHECK_DECLS(madvise, , ,[
#include "ansidecl.h"
#include "system.h"
])
AC_LANG_POP([C++])
# More time-related stuff.
AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include "ansidecl.h"
#include "system.h"
#ifdef HAVE_SYS_TIMES_H
#include
#endif
]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
if test $ac_cv_struct_tms = yes; then
AC_DEFINE(HAVE_STRUCT_TMS, 1,
[Define if defines struct tms.])
fi
# use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
# revisit after autoconf 2.50.
AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include "ansidecl.h"
#include "system.h"
]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
if test $gcc_cv_type_clock_t = yes; then
AC_DEFINE(HAVE_CLOCK_T, 1,
[Define if defines clock_t.])
fi
# Check if F_SETLKW is supported by fcntl.
AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include ]], [[
struct flock fl;
fl.l_whence = 0;
fl.l_start = 0;
fl.l_len = 0;
fl.l_pid = 0;
return fcntl (1, F_SETLKW, &fl);]])],
[ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
if test $ac_cv_f_setlkw = yes; then
AC_DEFINE(HOST_HAS_F_SETLKW, 1,
[Define if F_SETLKW supported by fcntl.])
fi
# Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
CFLAGS="$saved_CFLAGS"
CXXFLAGS="$saved_CXXFLAGS"
# mkdir takes a single argument on some systems.
gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
# File extensions
manext='.1'
objext='.o'
AC_SUBST(manext)
AC_SUBST(objext)
# With Setjmp/Longjmp based exception handling.
AC_ARG_ENABLE(sjlj-exceptions,
[AS_HELP_STRING([--enable-sjlj-exceptions],
[arrange to use setjmp/longjmp exception handling])],
[case $target in
*-*-hpux10*)
if test $enableval != yes; then
AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
enableval=yes
fi
;;
esac
force_sjlj_exceptions=yes],
[case $target in
*-*-hpux10*)
force_sjlj_exceptions=yes
enableval=yes
;;
lm32*-*-*)
force_sjlj_exceptions=yes
enableval=yes
;;
*)
force_sjlj_exceptions=no
;;
esac])
if test $force_sjlj_exceptions = yes; then
sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
[Define 0/1 to force the choice for exception handling model.])
fi
# --------------------------------------------------------
# Build, host, and target specific configuration fragments
# --------------------------------------------------------
# Collect build-machine-specific information.
. ${srcdir}/config.build
# Collect host-machine-specific information.
. ${srcdir}/config.host
target_gtfiles=
# Collect target-machine-specific information.
. ${srcdir}/config.gcc
extra_objs="${host_extra_objs} ${extra_objs}"
extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
# Default the target-machine variables that were not explicitly set.
if test x"$tm_file" = x
then tm_file=$cpu_type/$cpu_type.h; fi
if test x"$extra_headers" = x
then extra_headers=; fi
if test x$md_file = x
then md_file=$cpu_type/$cpu_type.md; fi
if test x$out_file = x
then out_file=$cpu_type/$cpu_type.c; fi
if test x"$tmake_file" = x
then tmake_file=$cpu_type/t-$cpu_type
fi
# Support --enable-initfini-array.
if test x$enable_initfini_array != xno; then
tm_file="${tm_file} initfini-array.h"
fi
if test x"$dwarf2" = xyes
then tm_file="$tm_file tm-dwarf2.h"
fi
# Say what files are being used for the output code and MD file.
echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
echo "Using \`$srcdir/config/$md_file' as machine description file."
# If any of the xm_file variables contain nonexistent files, warn
# about them and drop them.
bx=
for x in $build_xm_file; do
if test -f $srcdir/config/$x
then bx="$bx $x"
else AC_MSG_WARN($srcdir/config/$x does not exist.)
fi
done
build_xm_file="$bx"
hx=
for x in $host_xm_file; do
if test -f $srcdir/config/$x
then hx="$hx $x"
else AC_MSG_WARN($srcdir/config/$x does not exist.)
fi
done
host_xm_file="$hx"
tx=
for x in $xm_file; do
if test -f $srcdir/config/$x
then tx="$tx $x"
else AC_MSG_WARN($srcdir/config/$x does not exist.)
fi
done
xm_file="$tx"
count=a
for f in $tm_file; do
count=${count}x
done
if test $count = ax; then
echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
else
echo "Using the following target machine macro files:"
for f in $tm_file; do
echo " $srcdir/config/$f"
done
fi
if test x$use_long_long_for_widest_fast_int = xyes; then
AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
[Define to 1 if the 'long long' type is wider than 'long' but still
efficiently supported by the host hardware.])
fi
gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
count=a
for f in $host_xm_file; do
count=${count}x
done
if test $count = a; then
:
elif test $count = ax; then
echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
else
echo "Using the following host machine macro files:"
for f in $host_xm_file; do
echo " $srcdir/config/$f"
done
fi
echo "Using ${out_host_hook_obj} for host machine hooks."
if test "$host_xm_file" != "$build_xm_file"; then
count=a
for f in $build_xm_file; do
count=${count}x
done
if test $count = a; then
:
elif test $count = ax; then
echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
else
echo "Using the following build machine macro files:"
for f in $build_xm_file; do
echo " $srcdir/config/$f"
done
fi
fi
if test -n "$configured_native_system_header_dir"; then
native_system_header_dir=$configured_native_system_header_dir
fi
NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
case ${host} in
powerpc*-*-darwin*)
AC_CACHE_CHECK([whether mcontext_t fields have underscores],
gcc_cv_mcontext_underscores,
AC_COMPILE_IFELSE([
#include
#include
#include
int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
],
gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
if test $gcc_cv_mcontext_underscores = yes; then
AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
[mcontext_t fields start with __])
fi
;;
esac
# ---------
# Threading
# ---------
# Check if a valid thread package
case ${enable_threads} in
"" | no)
# No threads
target_thread_file='single'
;;
yes)
# default
target_thread_file='single'
;;
aix | dce | lynx | mipssde | posix | rtems | \
single | tpf | vxworks | win32)
target_thread_file=${enable_threads}
;;
*)
echo "${enable_threads} is an unknown thread package" 1>&2
exit 1
;;
esac
if test x${thread_file} = x; then
# No thread file set by target-specific clauses in config.gcc,
# so use file chosen by default logic above
thread_file=${target_thread_file}
fi
# --------
# UNSORTED
# --------
use_cxa_atexit=no
if test x$enable___cxa_atexit = xyes || \
test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
if test x$host = x$target; then
case $host in
# mingw32 doesn't have __cxa_atexit but uses atexit registration
# keyed to flag_use_cxa_atexit
*-*-mingw32*)
use_cxa_atexit=yes
;;
powerpc-ibm-aix*)
use_cxa_atexit=yes
;;
*)
AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
[echo "__cxa_atexit can't be enabled on this target"])
;;
esac
else
# We can't check for __cxa_atexit when building a cross, so assume
# it is available
use_cxa_atexit=yes
fi
if test x$use_cxa_atexit = xyes; then
AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
[Define if you want to use __cxa_atexit, rather than atexit, to
register C++ destructors for local statics and global objects.
This is essential for fully standards-compliant handling of
destructors, but requires __cxa_atexit in libc.])
fi
fi
# Look for a file containing extra machine modes.
if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
extra_modes_file='$(srcdir)'/config/${extra_modes}
AC_SUBST(extra_modes_file)
AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
[Define to the name of a file containing a list of extra machine modes
for this architecture.])
fi
# Convert extra_options into a form suitable for Makefile use.
extra_opt_files=
all_opt_files=
for f in $extra_options; do
extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
all_opt_files="$all_opt_files $srcdir/config/$f"
done
AC_SUBST(extra_opt_files)
# auto-host.h is the file containing items generated by autoconf and is
# the first file included by config.h.
# If host=build, it is correct to have bconfig include auto-host.h
# as well. If host!=build, we are in error and need to do more
# work to find out the build config parameters.
if test x$host = x$build
then
build_auto=auto-host.h
else
# We create a subdir, then run autoconf in the subdir.
# To prevent recursion we set host and build for the new
# invocation of configure to the build for this invocation
# of configure.
tempdir=build.$$
rm -rf $tempdir
mkdir $tempdir
cd $tempdir
case ${srcdir} in
/* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
*) realsrcdir=../${srcdir};;
esac
# Clearing GMPINC is necessary to prevent host headers being
# used by the build compiler. Defining GENERATOR_FILE stops
# system.h from including gmp.h.
CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
${realsrcdir}/configure \
--enable-languages=${enable_languages-all} \
--target=$target_alias --host=$build_alias --build=$build_alias
# We just finished tests for the build machine, so rename
# the file auto-build.h in the gcc directory.
mv auto-host.h ../auto-build.h
cd ..
rm -rf $tempdir
build_auto=auto-build.h
fi
AC_SUBST(build_subdir)
tm_file="${tm_file} defaults.h"
tm_p_file="${tm_p_file} tm-preds.h"
host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
# We don't want ansidecl.h in target files, write code there in ISO/GNU C.
# put this back in temporarily.
xm_file="auto-host.h ansidecl.h ${xm_file}"
# --------
# UNSORTED
# --------
changequote(,)dnl
# Compile in configure arguments.
if test -f configargs.h ; then
# Being re-configured.
gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
else
gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
fi
# Double all backslashes and backslash all quotes to turn
# gcc_config_arguments into a C string.
sed -e 's/\\/\\\\/g; s/"/\\"/g' <conftest.out
$gcc_config_arguments
EOF
gcc_config_arguments_str=`cat conftest.out`
rm -f conftest.out
cat > configargs.h < plugin-version.h <target assembler and hope that it will have the same features
# as the host->target assembler we'll be using.
gcc_cv_gas_major_version=
gcc_cv_gas_minor_version=
gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
m4_pattern_allow([AS_FOR_TARGET])dnl
AS_VAR_SET_IF(gcc_cv_as,, [
if test -x "$DEFAULT_ASSEMBLER"; then
gcc_cv_as="$DEFAULT_ASSEMBLER"
elif test -f $gcc_cv_as_gas_srcdir/configure.in \
&& test -f ../gas/Makefile \
&& test x$build = x$host; then
gcc_cv_as=../gas/as-new$build_exeext
elif test -x as$build_exeext; then
# Build using assembler in the current directory.
gcc_cv_as=./as$build_exeext
elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
gcc_cv_as="$AS_FOR_TARGET"
else
AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
fi])
ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
AC_SUBST(ORIGINAL_AS_FOR_TARGET)
case "$ORIGINAL_AS_FOR_TARGET" in
./as | ./as$build_exeext) ;;
*) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
esac
AC_MSG_CHECKING(what assembler to use)
if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
# Single tree build which includes gas. We want to prefer it
# over whatever linker top-level may have detected, since
# we'll use what we're building after installation anyway.
AC_MSG_RESULT(newly built gas)
in_tree_gas=yes
_gcc_COMPUTE_GAS_VERSION
in_tree_gas_is_elf=no
if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
|| (grep 'obj_format = multi' ../gas/Makefile \
&& grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
then
in_tree_gas_is_elf=yes
fi
else
AC_MSG_RESULT($gcc_cv_as)
in_tree_gas=no
fi
default_ld=
AC_ARG_ENABLE(ld,
[[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
[case "${enableval}" in
no)
default_ld=ld.gold
;;
esac])
install_gold_as_default=no
AC_ARG_ENABLE(gold,
[[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
[case "${enableval}" in
default)
install_gold_as_default=yes
;;
yes)
if test x${default_ld} != x; then
install_gold_as_default=yes
fi
;;
no)
;;
*)
AC_MSG_ERROR([invalid --enable-gold argument])
;;
esac])
# Identify the linker which will work hand-in-glove with the newly
# built GCC, so that we can examine its features. This is the linker
# which will be driven by the driver program.
#
# If build != host, and we aren't building gas in-tree, we identify a
# build->target linker and hope that it will have the same features
# as the host->target linker we'll be using.
gcc_cv_gld_major_version=
gcc_cv_gld_minor_version=
gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
AS_VAR_SET_IF(gcc_cv_ld,, [
if test -x "$DEFAULT_LINKER"; then
gcc_cv_ld="$DEFAULT_LINKER"
elif test $install_gold_as_default = yes \
&& test -f $gcc_cv_ld_gold_srcdir/configure.ac \
&& test -f ../gold/Makefile \
&& test x$build = x$host; then
gcc_cv_ld=../gold/ld-new$build_exeext
elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
&& test -f ../ld/Makefile \
&& test x$build = x$host; then
gcc_cv_ld=../ld/ld-new$build_exeext
elif test -x collect-ld$build_exeext; then
# Build using linker in the current directory.
gcc_cv_ld=./collect-ld$build_exeext
elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
gcc_cv_ld="$LD_FOR_TARGET"
else
AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
fi])
ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
# if the PLUGIN_LD is set ld-new, just have it as ld
# as that is the installed named.
if test x$PLUGIN_LD_SUFFIX = xld-new \
|| test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
PLUGIN_LD_SUFFIX=ld
fi
AC_ARG_WITH(plugin-ld,
[AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
[if test x"$withval" != x; then
ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
PLUGIN_LD_SUFFIX=`echo $withval | sed -e "s,$target_alias-,,"`
fi])
AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
# Check to see if we are using gold instead of ld
AC_MSG_CHECKING(whether we are using gold)
ld_is_gold=no
if test x$gcc_cv_ld != x; then
if $gcc_cv_ld --version 2>/dev/null | sed 1q \
| grep "GNU gold" > /dev/null; then
ld_is_gold=yes
fi
fi
AC_MSG_RESULT($ld_is_gold)
ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
AC_SUBST(ORIGINAL_LD_FOR_TARGET)
case "$ORIGINAL_LD_FOR_TARGET" in
./collect-ld | ./collect-ld$build_exeext) ;;
*) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
esac
AC_MSG_CHECKING(what linker to use)
if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
|| test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
# Single tree build which includes ld. We want to prefer it
# over whatever linker top-level may have detected, since
# we'll use what we're building after installation anyway.
AC_MSG_RESULT(newly built ld)
in_tree_ld=yes
in_tree_ld_is_elf=no
if (grep 'EMUL = .*elf' ../ld/Makefile \
|| grep 'EMUL = .*linux' ../ld/Makefile \
|| grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
in_tree_ld_is_elf=yes
elif test "$ld_is_gold" = yes; then
in_tree_ld_is_elf=yes
fi
for f in $gcc_cv_ld_bfd_srcdir/configure $gcc_cv_ld_gld_srcdir/configure $gcc_cv_ld_gld_srcdir/configure.in $gcc_cv_ld_gld_srcdir/Makefile.in
do
changequote(,)dnl
gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
if test x$gcc_cv_gld_version != x; then
break
fi
done
case $gcc_cv_gld_version in
VERSION=[0-9]*) ;;
changequote([,])dnl
*) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
changequote(,)dnl
esac
gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
changequote([,])dnl
ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
else
AC_MSG_RESULT($gcc_cv_ld)
in_tree_ld=no
gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
fi
AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
# Figure out what nm we will be using.
gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
AS_VAR_SET_IF(gcc_cv_nm,, [
if test -f $gcc_cv_binutils_srcdir/configure.in \
&& test -f ../binutils/Makefile \
&& test x$build = x$host; then
gcc_cv_nm=../binutils/nm-new$build_exeext
elif test -x nm$build_exeext; then
gcc_cv_nm=./nm$build_exeext
elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
gcc_cv_nm="$NM_FOR_TARGET"
else
AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
fi])
AC_MSG_CHECKING(what nm to use)
if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
# Single tree build which includes binutils.
AC_MSG_RESULT(newly built nm)
in_tree_nm=yes
else
AC_MSG_RESULT($gcc_cv_nm)
in_tree_nm=no
fi
ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
AC_SUBST(ORIGINAL_NM_FOR_TARGET)
case "$ORIGINAL_NM_FOR_TARGET" in
./nm | ./nm$build_exeext) ;;
*) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
esac
# Figure out what objdump we will be using.
AS_VAR_SET_IF(gcc_cv_objdump,, [
if test -f $gcc_cv_binutils_srcdir/configure.in \
&& test -f ../binutils/Makefile \
&& test x$build = x$host; then
# Single tree build which includes binutils.
gcc_cv_objdump=../binutils/objdump$build_exeext
elif test -x objdump$build_exeext; then
gcc_cv_objdump=./objdump$build_exeext
elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
else
AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
fi])
AC_MSG_CHECKING(what objdump to use)
if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
# Single tree build which includes binutils.
AC_MSG_RESULT(newly built objdump)
elif test x$gcc_cv_objdump = x; then
AC_MSG_RESULT(not found)
else
AC_MSG_RESULT($gcc_cv_objdump)
fi
# Figure out what readelf we will be using.
AS_VAR_SET_IF(gcc_cv_readelf,, [
if test -f $gcc_cv_binutils_srcdir/configure.in \
&& test -f ../binutils/Makefile \
&& test x$build = x$host; then
# Single tree build which includes binutils.
gcc_cv_readelf=../binutils/readelf$build_exeext
elif test -x readelf$build_exeext; then
gcc_cv_readelf=./readelf$build_exeext
else
AC_PATH_PROG(gcc_cv_readelf, readelf)
fi])
AC_MSG_CHECKING(what readelf to use)
if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
# Single tree build which includes binutils.
AC_MSG_RESULT(newly built readelf)
elif test x$gcc_cv_readelf = x; then
AC_MSG_RESULT(not found)
else
AC_MSG_RESULT($gcc_cv_readelf)
fi
# Figure out what assembler alignment features are present.
gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
[2,6,0],,
[.balign 4
.p2align 2],,
[AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
[Define if your assembler supports .balign and .p2align.])])
gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
[2,8,0],,
[.p2align 4,,7],,
[AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
[Define if your assembler supports specifying the maximum number
of bytes to skip when using the GAS .p2align command.])])
gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
[2,8,0],,
[.literal16],,
[AC_DEFINE(HAVE_GAS_LITERAL16, 1,
[Define if your assembler supports .literal16.])])
gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
[elf,2,9,0],,
[conftest_label1: .word 0
.subsection -1
conftest_label2: .word 0
.previous],
[if test x$gcc_cv_nm != x; then
$gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
$gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
then :
else gcc_cv_as_subsection_m1=yes
fi
rm -f conftest.nm1 conftest.nm2
fi],
[AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
[Define if your assembler supports .subsection and .subsection -1 starts
emitting at the beginning of your section.])])
gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
[2,2,0],,
[ .weak foobar],,
[AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
[2,17,0],,
[ .weakref foobar, barfnot],,
[AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
[2,15,91],,
[ .SPACE $TEXT$
.NSUBSPA $CODE$,COMDAT],,
[AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
# .hidden needs to be supported in both the assembler and the linker,
# because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
# This is irritatingly difficult to feature test for; we have to check the
# date string after the version number. If we've got an in-tree
# ld, we don't know its patchlevel version, so we set the baseline at 2.13
# to be safe.
# The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
[elf,2,13,0],,
[ .hidden foobar
foobar:])
case "${target}" in
*-*-darwin*)
# Darwin as has some visibility support, though with a different syntax.
gcc_cv_as_hidden=yes
;;
esac
# gnu_indirect_function type is an extension proposed at
# http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
# selection of function implementation
AC_ARG_ENABLE(gnu-indirect-function,
[AS_HELP_STRING([--enable-gnu-indirect-function],
[enable the use of the @gnu_indirect_function to glibc systems])],
[case $enable_gnu_indirect_function in
yes | no) ;;
*) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
Valid choices are 'yes' and 'no'.]) ;;
esac],
[enable_gnu_indirect_function="$default_gnu_indirect_function"])
gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
[Define if your system supports gnu indirect functions.])
changequote(,)dnl
if test $in_tree_ld != yes ; then
ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
if echo "$ld_ver" | grep GNU > /dev/null; then
if test x"$ld_is_gold" = xyes; then
# GNU gold --version looks like this:
#
# GNU gold (GNU Binutils 2.21.51.20110225) 1.11
#
# We extract the binutils version which is more familiar and specific
# than the gold version.
ld_vers=`echo $ld_ver | sed -n \
-e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
else
# GNU ld --version looks like this:
#
# GNU ld (GNU Binutils) 2.21.51.20110225
ld_vers=`echo $ld_ver | sed -n \
-e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
fi
ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
else
case "${target}" in
*-*-solaris2*)
# See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
# format.
#
# Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
# /usr/ccs/bin/ld has been configured.
ld_ver=`$gcc_cv_ld -V 2>&1`
if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
ld_vers=`echo $ld_ver | sed -n \
-e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
fi
;;
esac
fi
fi
changequote([,])dnl
AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
[[if test $in_tree_ld = yes ; then
gcc_cv_ld_hidden=no
if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
&& test $in_tree_ld_is_elf = yes; then
gcc_cv_ld_hidden=yes
fi
else
gcc_cv_ld_hidden=yes
if test x"$ld_is_gold" = xyes; then
:
elif echo "$ld_ver" | grep GNU > /dev/null; then
case "${target}" in
mmix-knuth-mmixware)
# The linker emits by default mmo, not ELF, so "no" is appropriate.
gcc_cv_ld_hidden=no
;;
esac
if test 0"$ld_date" -lt 20020404; then
if test -n "$ld_date"; then
# If there was date string, but was earlier than 2002-04-04, fail
gcc_cv_ld_hidden=no
elif test -z "$ld_vers"; then
# If there was no date string nor ld version number, something is wrong
gcc_cv_ld_hidden=no
else
test -z "$ld_vers_patch" && ld_vers_patch=0
if test "$ld_vers_major" -lt 2; then
gcc_cv_ld_hidden=no
elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
gcc_cv_ld_hidden="no"
elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
gcc_cv_ld_hidden=no
fi
fi
fi
else
case "${target}" in
*-*-darwin*)
# Darwin ld has some visibility support.
gcc_cv_ld_hidden=yes
;;
hppa64*-*-hpux* | ia64*-*-hpux*)
gcc_cv_ld_hidden=yes
;;
*-*-solaris2.1[0-9]*)
# Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
# .symbolic was only added in Solaris 9 12/02.
gcc_cv_ld_hidden=yes
;;
*)
gcc_cv_ld_hidden=no
;;
esac
fi
fi]])
libgcc_visibility=no
AC_SUBST(libgcc_visibility)
GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
libgcc_visibility=yes
AC_DEFINE(HAVE_GAS_HIDDEN, 1,
[Define if your assembler and linker support .hidden.])
fi
AC_MSG_CHECKING(linker read-only and read-write section mixing)
gcc_cv_ld_ro_rw_mix=unknown
if test $in_tree_ld = yes ; then
if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
&& test $in_tree_ld_is_elf = yes; then
gcc_cv_ld_ro_rw_mix=read-write
fi
elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
echo '.section myfoosect, "a"' > conftest1.s
echo '.section myfoosect, "aw"' > conftest2.s
echo '.byte 1' >> conftest2.s
echo '.section myfoosect, "a"' > conftest3.s
echo '.byte 0' >> conftest3.s
if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
&& $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
&& $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
&& $gcc_cv_ld -shared -o conftest1.so conftest1.o \
conftest2.o conftest3.o > /dev/null 2>&1; then
gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
| sed -e '/myfoosect/!d' -e N`
if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
gcc_cv_ld_ro_rw_mix=read-only
else
gcc_cv_ld_ro_rw_mix=read-write
fi
fi
fi
changequote(,)dnl
rm -f conftest.* conftest[123].*
changequote([,])dnl
fi
if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
[Define if your linker links a mix of read-only
and read-write sections into a read-write section.])
fi
AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
gcc_AC_INITFINI_ARRAY
# Check if we have .[us]leb128, and support symbol arithmetic with it.
gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
[elf,2,11,0],,
[ .data
.uleb128 L2 - L1
L1:
.uleb128 1280
.sleb128 -1010
L2:],
[[# GAS versions before 2.11 do not support uleb128,
# despite appearing to.
# ??? There exists an elf-specific test that will crash
# the assembler. Perhaps it's better to figure out whether
# arbitrary sections are supported and try the test.
as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
if echo "$as_ver" | grep GNU > /dev/null; then
as_vers=`echo $as_ver | sed -n \
-e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
as_major=`expr "$as_vers" : '\([0-9]*\)'`
as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
if test $as_major -eq 2 && test $as_minor -lt 11
then :
else gcc_cv_as_leb128=yes
fi
fi]],
[AC_DEFINE(HAVE_AS_LEB128, 1,
[Define if your assembler supports .sleb128 and .uleb128.])])
# Check if we have assembler support for unwind directives.
gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
,,
[ .text
.cfi_startproc
.cfi_offset 0, 0
.cfi_same_value 1
.cfi_def_cfa 1, 2
.cfi_escape 1, 2, 3, 4, 5
.cfi_endproc],
[case "$target" in
*-*-solaris*)
# If the linker used on Solaris (like Sun ld) isn't capable of merging
# read-only and read-write sections, we need to make sure that the
# assembler used emits read-write .eh_frame sections.
if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
if test "x$gcc_cv_objdump" != x; then
if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
gcc_cv_as_cfi_directive=no
else
case "$target" in
i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
# On Solaris/x86, make sure that GCC and assembler agree on using
# read-only .eh_frame sections for 64-bit.
if test x$gas = xyes; then
as_ix86_64_opt="--64"
else
as_ix86_64_opt="-xarch=amd64"
fi
if $gcc_cv_as $as_ix86_64_opt -o conftest.o conftest.s > /dev/null 2>&1 && \
$gcc_cv_objdump -h conftest.o 2>/dev/null | \
sed -e /.eh_frame/!d -e N | \
grep READONLY > /dev/null; then
gcc_cv_as_cfi_directive=yes
else
gcc_cv_as_cfi_directive=no
fi
;;
*)
gcc_cv_as_cfi_directive=yes
;;
esac
fi
else
# no objdump, err on the side of caution
gcc_cv_as_cfi_directive=no
fi
else
gcc_cv_as_cfi_directive=yes
fi
;;
*-*-*)
gcc_cv_as_cfi_directive=yes
;;
esac])
if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
,,
[ .text
.cfi_startproc
.cfi_adjust_cfa_offset 64
.skip 75040, 0
.cfi_adjust_cfa_offset 128
.cfi_endproc],
[[
if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
| grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
gcc_cv_as_cfi_advance_working=yes
fi
]])
else
# no objdump, err on the side of caution
gcc_cv_as_cfi_advance_working=no
fi
GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
[`if test $gcc_cv_as_cfi_directive = yes \
&& test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
[Define 0/1 if your assembler supports CFI directives.])
GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
gcc_GAS_CHECK_FEATURE([cfi personality directive],
gcc_cv_as_cfi_personality_directive, ,,
[ .text
.cfi_startproc
.cfi_personality 0, symbol
.cfi_endproc])
AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
[`if test $gcc_cv_as_cfi_personality_directive = yes;
then echo 1; else echo 0; fi`],
[Define 0/1 if your assembler supports .cfi_personality.])
gcc_GAS_CHECK_FEATURE([cfi sections directive],
gcc_cv_as_cfi_sections_directive, ,,
[ .text
.cfi_sections .debug_frame, .eh_frame
.cfi_startproc
.cfi_endproc],
[case $target_os in
win32 | pe | cygwin* | mingw32* | uwin*)
# Need to check that we generated the correct relocation for the
# .debug_frame section. This was fixed for binutils 2.21.
gcc_cv_as_cfi_sections_directive=no
if test "x$gcc_cv_objdump" != x; then
if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
grep secrel > /dev/null; then
gcc_cv_as_cfi_sections_directive=yes
fi
fi
;;
*)
gcc_cv_as_cfi_sections_directive=yes
;;
esac])
GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
[`if test $gcc_cv_as_cfi_sections_directive = yes;
then echo 1; else echo 0; fi`],
[Define 0/1 if your assembler supports .cfi_sections.])
# GAS versions up to and including 2.11.0 may mis-optimize
# .eh_frame data.
gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
[elf,2,12,0],,
[ .text
.LFB1:
.4byte 0
.L1:
.4byte 0
.LFE1:
.section .eh_frame,"aw",@progbits
__FRAME_BEGIN__:
.4byte .LECIE1-.LSCIE1
.LSCIE1:
.4byte 0x0
.byte 0x1
.ascii "z\0"
.byte 0x1
.byte 0x78
.byte 0x1a
.byte 0x0
.byte 0x4
.4byte 1
.p2align 1
.LECIE1:
.LSFDE1:
.4byte .LEFDE1-.LASFDE1
.LASFDE1:
.4byte .LASFDE1-__FRAME_BEGIN__
.4byte .LFB1
.4byte .LFE1-.LFB1
.byte 0x4
.4byte .LFE1-.LFB1
.byte 0x4
.4byte .L1-.LFB1
.LEFDE1:],
[ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
cat > conftest.lit < conftest.big </dev/null \
| tail -3 > conftest.got \
&& { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
|| diff -b conftest.big conftest.got > /dev/null 2>&1; }
then
gcc_cv_as_eh_frame=yes
elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
gcc_cv_as_eh_frame=buggy
else
# Uh oh, what do we do now?
gcc_cv_as_eh_frame=no
fi])
if test $gcc_cv_as_eh_frame = buggy; then
AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
[Define if your assembler mis-optimizes .eh_frame data.])
fi
gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
[elf,2,12,0], [--fatal-warnings],
[.section .rodata.str, "aMS", @progbits, 1])
if test $gcc_cv_as_shf_merge = no; then
gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
[elf,2,12,0], [--fatal-warnings],
[.section .rodata.str, "aMS", %progbits, 1])
fi
AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
[`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
[Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
gcc_cv_as_comdat_group,
[elf,2,16,0], [--fatal-warnings],
[.section .text,"axG",@progbits,.foo,comdat])
if test $gcc_cv_as_comdat_group = yes; then
gcc_cv_as_comdat_group_percent=no
gcc_cv_as_comdat_group_group=no
else
gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
gcc_cv_as_comdat_group_percent,
[elf,2,16,0], [--fatal-warnings],
[.section .text,"axG",%progbits,.foo,comdat])
if test $gcc_cv_as_comdat_group_percent = yes; then
gcc_cv_as_comdat_group_group=no
else
case "${target}" in
# Sun as uses a completely different syntax.
*-*-solaris2*)
case "${target}" in
sparc*-*-solaris2*)
conftest_s='
.group foo,".text%foo",#comdat
.section ".text%foo", #alloc,#execinstr,#progbits
.globl foo
foo:
'
;;
i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
conftest_s='
.group foo,.text%foo,#comdat
.section .text%foo, "ax", @progbits
.globl foo
foo:
'
;;
esac
gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
gcc_cv_as_comdat_group_group,
,, [$conftest_s])
;;
esac
if test -z "${gcc_cv_as_comdat_group_group+set}"; then
gcc_cv_as_comdat_group_group=no
fi
fi
fi
if test x"$ld_is_gold" = xyes; then
comdat_group=yes
elif test $in_tree_ld = yes ; then
comdat_group=no
if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
&& test $in_tree_ld_is_elf = yes; then
comdat_group=yes
fi
elif echo "$ld_ver" | grep GNU > /dev/null; then
comdat_group=yes
if test 0"$ld_date" -lt 20050308; then
if test -n "$ld_date"; then
# If there was date string, but was earlier than 2005-03-08, fail
comdat_group=no
elif test "$ld_vers_major" -lt 2; then
comdat_group=no
elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
comdat_group=no
fi
fi
else
changequote(,)dnl
case "${target}" in
*-*-solaris2.1[1-9]*)
comdat_group=no
# Sun ld has COMDAT group support since Solaris 9, but it doesn't
# interoperate with GNU as until Solaris 11 build 130, i.e. ld
# version 1.688.
#
# If using Sun as for COMDAT group as emitted by GCC, one needs at
# least ld version 1.2267.
if test "$ld_vers_major" -gt 1; then
comdat_group=yes
elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
comdat_group=yes
elif test "$ld_vers_minor" -ge 2267; then
comdat_group=yes
fi
;;
*)
# Assume linkers other than GNU ld don't support COMDAT group.
comdat_group=no
;;
esac
changequote([,])dnl
fi
# Allow overriding the automatic COMDAT group tests above.
AC_ARG_ENABLE(comdat,
[AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
[comdat_group="$enable_comdat"])
if test $comdat_group = no; then
gcc_cv_as_comdat_group=no
gcc_cv_as_comdat_group_percent=no
gcc_cv_as_comdat_group_group=no
fi
AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
[`if test $gcc_cv_as_comdat_group = yes \
|| test $gcc_cv_as_comdat_group_percent = yes \
|| test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
[Define 0/1 if your assembler and linker support COMDAT groups.])
gcc_GAS_CHECK_FEATURE([line table discriminator support],
gcc_cv_as_discriminator,
[2,19,51],,
[ .text
.file 1 "conf.c"
.loc 1 1 0 discriminator 1],,
[AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
[Define if your assembler supports the .loc discriminator sub-directive.])])
# Thread-local storage - the check is heavily parameterized.
conftest_s=
tls_first_major=
tls_first_minor=
tls_as_opt=
case "$target" in
changequote(,)dnl
alpha*-*-*)
conftest_s='
.section ".tdata","awT",@progbits
foo: .long 25
.text
ldq $27,__tls_get_addr($29) !literal!1
lda $16,foo($29) !tlsgd!1
jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
ldq $27,__tls_get_addr($29) !literal!2
lda $16,foo($29) !tlsldm!2
jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
ldq $1,foo($29) !gotdtprel
ldah $2,foo($29) !dtprelhi
lda $3,foo($2) !dtprello
lda $4,foo($29) !dtprel
ldq $1,foo($29) !gottprel
ldah $2,foo($29) !tprelhi
lda $3,foo($2) !tprello
lda $4,foo($29) !tprel'
tls_first_major=2
tls_first_minor=13
tls_as_opt=--fatal-warnings
;;
cris-*-*|crisv32-*-*)
conftest_s='
.section ".tdata","awT",@progbits
x: .long 25
.text
move.d x:IE,$r10
nop'
tls_first_major=2
tls_first_minor=20
tls_as_opt=--fatal-warnings
;;
frv*-*-*)
conftest_s='
.section ".tdata","awT",@progbits
x: .long 25
.text
call #gettlsoff(x)'
tls_first_major=2
tls_first_minor=14
;;
hppa*-*-linux*)
conftest_s='
t1: .reg %r20
t2: .reg %r21
gp: .reg %r19
.section ".tdata","awT",@progbits
foo: .long 25
.text
.align 4
addil LT%foo-$tls_gdidx$,gp
ldo RT%foo-$tls_gdidx$(%r1),%arg0
b __tls_get_addr
nop
addil LT%foo-$tls_ldidx$,gp
b __tls_get_addr
ldo RT%foo-$tls_ldidx$(%r1),%arg0
addil LR%foo-$tls_dtpoff$,%ret0
ldo RR%foo-$tls_dtpoff$(%r1),%t1
mfctl %cr27,%t1
addil LT%foo-$tls_ieoff$,gp
ldw RT%foo-$tls_ieoff$(%r1),%t2
add %t1,%t2,%t3
mfctl %cr27,%t1
addil LR%foo-$tls_leoff$,%t1
ldo RR%foo-$tls_leoff$(%r1),%t2'
tls_first_major=2
tls_first_minor=15
tls_as_opt=--fatal-warnings
;;
arm*-*-*)
conftest_s='
.section ".tdata","awT",%progbits
foo: .long 25
.text
.word foo(gottpoff)
.word foo(tpoff)
.word foo(tlsgd)
.word foo(tlsldm)
.word foo(tlsldo)'
tls_first_major=2
tls_first_minor=17
;;
i[34567]86-*-* | x86_64-*-*)
case "$target" in
i[34567]86-*-solaris2.* | x86_64-*-solaris2.1[0-9]*)
on_solaris=yes
;;
*)
on_solaris=no
;;
esac
if test x$on_solaris = xyes && test x$gas_flag = xno; then
conftest_s='
.section .tdata,"awt",@progbits'
tls_first_major=0
tls_first_minor=0
tls_section_flag=t
changequote([,])dnl
AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
[Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
changequote(,)dnl
else
conftest_s='
.section ".tdata","awT",@progbits'
tls_first_major=2
tls_first_minor=14
tls_section_flag=T
tls_as_opt="--fatal-warnings"
fi
case "$target" in
i[34567]86-*-*)
conftest_s="$conftest_s
foo: .long 25
.text
movl %gs:0, %eax
leal foo@tlsgd(,%ebx,1), %eax
leal foo@tlsldm(%ebx), %eax
leal foo@dtpoff(%eax), %edx
movl foo@gottpoff(%ebx), %eax
subl foo@gottpoff(%ebx), %eax
addl foo@gotntpoff(%ebx), %eax
movl foo@indntpoff, %eax
movl \$foo@tpoff, %eax
subl \$foo@tpoff, %eax
leal foo@ntpoff(%ecx), %eax"
;;
x86_64-*-*)
if test x$on_solaris = xyes; then
case $gas_flag in
yes) tls_as_opt="$tls_as_opt --64" ;;
no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
esac
fi
conftest_s="$conftest_s
foo: .long 25
.text
movq %fs:0, %rax
leaq foo@tlsgd(%rip), %rdi
leaq foo@tlsld(%rip), %rdi
leaq foo@dtpoff(%rax), %rdx
movq foo@gottpoff(%rip), %rax
movq \$foo@tpoff, %rax"
;;
esac
;;
ia64-*-*)
conftest_s='
.section ".tdata","awT",@progbits
foo: data8 25
.text
addl r16 = @ltoff(@dtpmod(foo#)), gp
addl r17 = @ltoff(@dtprel(foo#)), gp
addl r18 = @ltoff(@tprel(foo#)), gp
addl r19 = @dtprel(foo#), gp
adds r21 = @dtprel(foo#), r13
movl r23 = @dtprel(foo#)
addl r20 = @tprel(foo#), gp
adds r22 = @tprel(foo#), r13
movl r24 = @tprel(foo#)'
tls_first_major=2
tls_first_minor=13
tls_as_opt=--fatal-warnings
;;
microblaze*-*-*)
conftest_s='
.section .tdata,"awT",@progbits
x:
.word 2
.text
addik r5,r20,x@TLSGD
addik r5,r20,x@TLSLDM'
tls_first_major=2
tls_first_minor=20
tls_as_opt='--fatal-warnings'
;;
mips*-*-*)
conftest_s='
.section .tdata,"awT",@progbits
x:
.word 2
.text
addiu $4, $28, %tlsgd(x)
addiu $4, $28, %tlsldm(x)
lui $4, %dtprel_hi(x)
addiu $4, $4, %dtprel_lo(x)
lw $4, %gottprel(x)($28)
lui $4, %tprel_hi(x)
addiu $4, $4, %tprel_lo(x)'
tls_first_major=2
tls_first_minor=16
tls_as_opt='-32 --fatal-warnings'
;;
m68k-*-*)
conftest_s='
.section .tdata,"awT",@progbits
x:
.word 2
.text
foo:
move.l x@TLSGD(%a5),%a0
move.l x@TLSLDM(%a5),%a0
move.l x@TLSLDO(%a5),%a0
move.l x@TLSIE(%a5),%a0
move.l x@TLSLE(%a5),%a0'
tls_first_major=2
tls_first_minor=19
tls_as_opt='--fatal-warnings'
;;
nios2-*-*)
conftest_s='
.section ".tdata","awT",@progbits'
tls_first_major=2
tls_first_minor=23
tls_as_opt="--fatal-warnings"
;;
aarch64*-*-*)
conftest_s='
.section ".tdata","awT",%progbits
foo: .long 25
.text
adrp x0, :tlsgd:x
add x0, x0, #:tlsgd_lo12:x
bl __tls_get_addr
nop'
tls_first_major=2
tls_first_minor=20
tls_as_opt='--fatal-warnings'
;;
powerpc-ibm-aix*)
conftest_s='
.extern __get_tpointer
.toc
LC..1:
.tc a[TC],a[TL]@le
.csect .text[PR]
.tlstest:
lwz 9,LC..1(2)
bla __get_tpointer
lwzx 3,9,3
.globl a
.csect a[TL],4
a:
.space 4'
tls_first_major=0
tls_first_minor=0
;;
powerpc64*-*-*)
conftest_s='
.section ".tdata","awT",@progbits
.align 3
ld0: .space 8
ld1: .space 8
x1: .space 8
x2: .space 8
x3: .space 8
.text
addi 3,2,ld0@got@tlsgd
bl .__tls_get_addr
nop
addi 3,2,ld1@toc
bl .__tls_get_addr
nop
addi 3,2,x1@got@tlsld
bl .__tls_get_addr
nop
addi 9,3,x1@dtprel
bl .__tls_get_addr
nop
addis 9,3,x2@dtprel@ha
addi 9,9,x2@dtprel@l
bl .__tls_get_addr
nop
ld 9,x3@got@dtprel(2)
add 9,9,3
bl .__tls_get_addr
nop'
tls_first_major=2
tls_first_minor=14
tls_as_opt="-a64 --fatal-warnings"
;;
powerpc*-*-*)
conftest_s='
.section ".tdata","awT",@progbits
.align 2
ld0: .space 4
ld1: .space 4
x1: .space 4
x2: .space 4
x3: .space 4
.text
addi 3,31,ld0@got@tlsgd
bl __tls_get_addr
addi 3,31,x1@got@tlsld
bl __tls_get_addr
addi 9,3,x1@dtprel
addis 9,3,x2@dtprel@ha
addi 9,9,x2@dtprel@l
lwz 9,x3@got@tprel(31)
add 9,9,x@tls
addi 9,2,x1@tprel
addis 9,2,x2@tprel@ha
addi 9,9,x2@tprel@l'
tls_first_major=2
tls_first_minor=14
tls_as_opt="-a32 --fatal-warnings"
;;
s390-*-*)
conftest_s='
.section ".tdata","awT",@progbits
foo: .long 25
.text
.long foo@TLSGD
.long foo@TLSLDM
.long foo@DTPOFF
.long foo@NTPOFF
.long foo@GOTNTPOFF
.long foo@INDNTPOFF
l %r1,foo@GOTNTPOFF(%r12)
l %r1,0(%r1):tls_load:foo
bas %r14,0(%r1,%r13):tls_gdcall:foo
bas %r14,0(%r1,%r13):tls_ldcall:foo'
tls_first_major=2
tls_first_minor=14
tls_as_opt="-m31 --fatal-warnings"
;;
s390x-*-*)
conftest_s='
.section ".tdata","awT",@progbits
foo: .long 25
.text
.quad foo@TLSGD
.quad foo@TLSLDM
.quad foo@DTPOFF
.quad foo@NTPOFF
.quad foo@GOTNTPOFF
lg %r1,foo@GOTNTPOFF(%r12)
larl %r1,foo@INDNTPOFF
brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
tls_first_major=2
tls_first_minor=14
tls_as_opt="-m64 -Aesame --fatal-warnings"
;;
sh-*-* | sh[34]-*-*)
conftest_s='
.section ".tdata","awT",@progbits
foo: .long 25
.text
.long foo@TLSGD
.long foo@TLSLDM
.long foo@DTPOFF
.long foo@GOTTPOFF
.long foo@TPOFF'
tls_first_major=2
tls_first_minor=13
tls_as_opt=--fatal-warnings
;;
sparc*-*-*)
case "$target" in
sparc*-sun-solaris2.*)
on_solaris=yes
;;
*)
on_solaris=no
;;
esac
if test x$on_solaris = xyes && test x$gas_flag = xno; then
conftest_s='
.section ".tdata",#alloc,#write,#tls'
tls_first_major=0
tls_first_minor=0
else
conftest_s='
.section ".tdata","awT",@progbits'
tls_first_major=2
tls_first_minor=14
tls_as_opt="-32 --fatal-warnings"
fi
conftest_s="$conftest_s
foo: .long 25
.text
sethi %tgd_hi22(foo), %o0
add %o0, %tgd_lo10(foo), %o1
add %l7, %o1, %o0, %tgd_add(foo)
call __tls_get_addr, %tgd_call(foo)
sethi %tldm_hi22(foo), %l1
add %l1, %tldm_lo10(foo), %l2
add %l7, %l2, %o0, %tldm_add(foo)
call __tls_get_addr, %tldm_call(foo)
sethi %tldo_hix22(foo), %l3
xor %l3, %tldo_lox10(foo), %l4
add %o0, %l4, %l5, %tldo_add(foo)
sethi %tie_hi22(foo), %o3
add %o3, %tie_lo10(foo), %o3
ld [%l7 + %o3], %o2, %tie_ld(foo)
add %g7, %o2, %o4, %tie_add(foo)
sethi %tle_hix22(foo), %l1
xor %l1, %tle_lox10(foo), %o5
ld [%g7 + %o5], %o1"
;;
tilepro*-*-*)
conftest_s='
.section ".tdata","awT",@progbits
foo: .long 25
.text
addli r0, zero, tls_gd(foo)
auli r0, zero, tls_gd_ha16(foo)
addli r0, r0, tls_gd_lo16(foo)
jal __tls_get_addr
addli r0, zero, tls_ie(foo)
auli r0, r0, tls_ie_ha16(foo)
addli r0, r0, tls_ie_lo16(foo)'
tls_first_major=2
tls_first_minor=22
tls_as_opt="--fatal-warnings"
;;
tilegx*-*-*)
conftest_s='
.section ".tdata","awT",@progbits
foo: .long 25
.text
shl16insli r0, zero, hw0_last_tls_gd(foo)
shl16insli r0, zero, hw1_last_tls_gd(foo)
shl16insli r0, r0, hw0_tls_gd(foo)
jal __tls_get_addr
shl16insli r0, zero, hw1_last_tls_ie(foo)
shl16insli r0, r0, hw0_tls_ie(foo)'
tls_first_major=2
tls_first_minor=22
tls_as_opt="--fatal-warnings"
;;
xtensa*-*-*)
conftest_s='
.section ".tdata","awT",@progbits
foo: .long 25
.text
movi a8, foo@TLSFUNC
movi a10, foo@TLSARG
callx8.tls a8, foo@TLSCALL'
tls_first_major=2
tls_first_minor=19
;;
changequote([,])dnl
esac
set_have_as_tls=no
if test "x$enable_tls" = xno ; then
: # TLS explicitly disabled.
elif test "x$enable_tls" = xyes ; then
set_have_as_tls=yes # TLS explicitly enabled.
elif test -z "$tls_first_major"; then
: # If we don't have a check, assume no support.
else
gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
[$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
[set_have_as_tls=yes])
fi
if test $set_have_as_tls = yes ; then
AC_DEFINE(HAVE_AS_TLS, 1,
[Define if your assembler and linker support thread-local storage.])
fi
# Target-specific assembler checks.
AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
gcc_cv_ld_static_dynamic=no
gcc_cv_ld_static_option='-Bstatic'
gcc_cv_ld_dynamic_option='-Bdynamic'
if test $in_tree_ld = yes ; then
if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
gcc_cv_ld_static_dynamic=yes
fi
elif test x$gcc_cv_ld != x; then
# Check if linker supports -Bstatic/-Bdynamic option
if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
&& $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
gcc_cv_ld_static_dynamic=yes
else
case "$target" in
# AIX ld uses -b flags
*-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
gcc_cv_ld_static_dynamic=yes
gcc_cv_ld_static_option="-bstatic"
gcc_cv_ld_dynamic_option="-bdynamic"
;;
# HP-UX ld uses -a flags to select between shared and archive.
*-*-hpux*)
if test x"$gnu_ld" = xno; then
gcc_cv_ld_static_dynamic=yes
gcc_cv_ld_static_option="-aarchive_shared"
gcc_cv_ld_dynamic_option="-adefault"
fi
;;
# Solaris 2 ld always supports -Bstatic/-Bdynamic.
*-*-solaris2*)
gcc_cv_ld_static_dynamic=yes
;;
esac
fi
fi
if test x"$gcc_cv_ld_static_dynamic" = xyes; then
AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
[Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
[Define to the linker option to disable use of shared objects.])
AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
[Define to the linker option to enable use of shared objects.])
fi
AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
if test x"$demangler_in_ld" = xyes; then
AC_MSG_CHECKING(linker --demangle support)
gcc_cv_ld_demangle=no
if test $in_tree_ld = yes; then
if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
gcc_cv_ld_demangle=yes
fi
elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
# Check if the GNU linker supports --demangle option
if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
gcc_cv_ld_demangle=yes
fi
fi
if test x"$gcc_cv_ld_demangle" = xyes; then
AC_DEFINE(HAVE_LD_DEMANGLE, 1,
[Define if your linker supports --demangle option.])
fi
AC_MSG_RESULT($gcc_cv_ld_demangle)
fi
AC_MSG_CHECKING(linker plugin support)
gcc_cv_lto_plugin=0
if test -f liblto_plugin.la; then
save_ld_ver="$ld_ver"
save_ld_vers_major="$ld_vers_major"
save_ld_vers_minor="$ld_vers_minor"
save_ld_is_gold="$ld_is_gold"
ld_is_gold=no
if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
ld_ver="GNU ld"
# FIXME: ld_is_gold?
ld_vers_major="$gcc_cv_gld_major_version"
ld_vers_minor="$gcc_cv_gld_minor_version"
else
# Determine plugin linker version.
# FIXME: Partial duplicate from above, generalize.
changequote(,)dnl
ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
if echo "$ld_ver" | grep GNU > /dev/null; then
if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
ld_is_gold=yes
ld_vers=`echo $ld_ver | sed -n \
-e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
else
ld_vers=`echo $ld_ver | sed -n \
-e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
fi
ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
fi
changequote([,])dnl
fi
# Determine plugin support.
if echo "$ld_ver" | grep GNU > /dev/null; then
# Require GNU ld or gold 2.21+ for plugin support by default.
if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
gcc_cv_lto_plugin=2
# Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
gcc_cv_lto_plugin=1
fi
fi
ld_ver="$save_ld_ver"
ld_vers_major="$save_ld_vers_major"
ld_vers_minor="$save_ld_vers_minor"
ld_is_gold="$save_ld_is_gold"
fi
AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
[Define to the level of your linker's plugin support.])
AC_MSG_RESULT($gcc_cv_lto_plugin)
case "$target" in
aarch64*-*-*)
gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
[-mabi=lp64], [.text],,,)
if test x$gcc_cv_as_aarch64_mabi = xyes; then
AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
[Define if your assembler supports the -mabi option.])
else
if test x$with_abi = xilp32; then
AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
Upgrade the Assembler.])
fi
if test x"$with_multilib_list" = xdefault; then
TM_MULTILIB_CONFIG=lp64
else
aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
for aarch64_multilib in ${aarch64_multilibs}; do
case ${aarch64_multilib} in
ilp32)
AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
Upgrade the Assembler.])
;;
*)
;;
esac
done
fi
fi
;;
# All TARGET_ABI_OSF targets.
alpha*-*-linux* | alpha*-*-*bsd*)
gcc_GAS_CHECK_FEATURE([explicit relocation support],
gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
[ .set nomacro
.text
extbl $3, $2, $3 !lituse_bytoff!1
ldq $2, a($29) !literal!1
ldq $4, b($29) !literal!2
ldq_u $3, 0($2) !lituse_base!1
ldq $27, f($29) !literal!5
jsr $26, ($27), f !lituse_jsr!5
ldah $29, 0($26) !gpdisp!3
lda $0, c($29) !gprel
ldah $1, d($29) !gprelhigh
lda $1, d($1) !gprellow
lda $29, 0($29) !gpdisp!3],,
[AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
[Define if your assembler supports explicit relocations.])])
gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
[ .set nomacro
.text
ldq $27, a($29) !literal!1
jsr $26, ($27), a !lituse_jsrdirect!1],,
[AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
[Define if your assembler supports the lituse_jsrdirect relocation.])])
;;
cris-*-*)
gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
gcc_cv_as_cris_no_mul_bug,[2,15,91],
[-no-mul-bug-abort], [.text],,
[AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
[Define if your assembler supports the -no-mul-bug-abort option.])])
;;
sparc*-*-*)
gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
[.register %g2, #scratch],,
[AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
[Define if your assembler supports .register.])])
gcc_GAS_CHECK_FEATURE([@%:@nobits], gcc_cv_as_sparc_nobits,,,
[.section "nobits",#alloc,#write,#nobits
.section "progbits",#alloc,#write,#progbits])
AC_DEFINE_UNQUOTED(HAVE_AS_SPARC_NOBITS,
[`if test $gcc_cv_as_sparc_nobits = yes; then echo 1; else echo 0; fi`],
[Define to 1 if your assembler supports #nobits, 0 otherwise.])
gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
[-relax], [.text],,
[AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
[Define if your assembler supports -relax option.])])
gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
gcc_cv_as_sparc_gotdata_op,,
[-K PIC],
[.text
.align 4
foo:
nop
bar:
sethi %gdop_hix22(foo), %g1
xor %g1, %gdop_lox10(foo), %g1
ld [[%l7 + %g1]], %g2, %gdop(foo)],
[if test x$gcc_cv_ld != x \
&& $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
if test x$gcc_cv_objdump != x; then
if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
| grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
gcc_cv_as_sparc_gotdata_op=no
else
gcc_cv_as_sparc_gotdata_op=yes
fi
fi
fi
rm -f conftest],
[AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
[Define if your assembler and linker support GOTDATA_OP relocs.])])
gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
gcc_cv_as_sparc_ua_pcrel,,
[-K PIC],
[.text
foo:
nop
.data
.align 4
.byte 0
.uaword %r_disp32(foo)],
[if test x$gcc_cv_ld != x \
&& $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
gcc_cv_as_sparc_ua_pcrel=yes
fi
rm -f conftest],
[AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
[Define if your assembler and linker support unaligned PC relative relocs.])
gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
gcc_cv_as_sparc_ua_pcrel_hidden,,
[-K PIC],
[.data
.align 4
.byte 0x31
.uaword %r_disp32(foo)
.byte 0x32, 0x33, 0x34
.global foo
.hidden foo
foo:
.skip 4],
[if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
&& $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
&& $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
| grep ' 31000000 07323334' > /dev/null 2>&1; then
if $gcc_cv_objdump -R conftest 2> /dev/null \
| grep 'DISP32' > /dev/null 2>&1; then
:
else
gcc_cv_as_sparc_ua_pcrel_hidden=yes
fi
fi
rm -f conftest],
[AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
[Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
]) # unaligned pcrel relocs
gcc_GAS_CHECK_FEATURE([offsetable %lo()],
gcc_cv_as_sparc_offsetable_lo10,,
[-xarch=v9],
[.text
or %g1, %lo(ab) + 12, %g1
or %g1, %lo(ab + 12), %g1],
[if test x$gcc_cv_objdump != x \
&& $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
| grep ' 82106000 82106000' > /dev/null 2>&1; then
gcc_cv_as_sparc_offsetable_lo10=yes
fi],
[AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
[Define if your assembler supports offsetable %lo().])])
gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
gcc_cv_as_sparc_fmaf,,
[-xarch=v9d],
[.text
.register %g2, #scratch
.register %g3, #scratch
.align 4
fmaddd %f0, %f2, %f4, %f6
addxccc %g1, %g2, %g3
fsrl32 %f2, %f4, %f8
fnaddd %f10, %f12, %f14],,
[AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
[Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
gcc_cv_as_sparc_sparc4,,
[-xarch=sparc4],
[.text
.register %g2, #scratch
.register %g3, #scratch
.align 4
cxbe %g2, %g3, 1f
1: cwbneg %g2, %g3, 1f
1: sha1
md5
aes_kexpand0 %f4, %f6, %f8
des_round %f38, %f40, %f42, %f44
camellia_f %f54, %f56, %f58, %f60
kasumi_fi_xor %f46, %f48, %f50, %f52],,
[AC_DEFINE(HAVE_AS_SPARC4, 1,
[Define if your assembler supports SPARC4 instructions.])])
gcc_GAS_CHECK_FEATURE([LEON instructions],
gcc_cv_as_sparc_leon,,
[-Aleon],
[.text
.register %g2, #scratch
.register %g3, #scratch
.align 4
smac %g2, %g3, %g1
umac %g2, %g3, %g1
casa [[%g2]] 0xb, %g3, %g1],,
[AC_DEFINE(HAVE_AS_LEON, 1,
[Define if your assembler supports LEON instructions.])])
;;
changequote(,)dnl
i[34567]86-*-* | x86_64-*-*)
changequote([,])dnl
case $target_os in
cygwin*)
# Full C++ conformance when using a shared libstdc++-v3 requires some
# support from the Cygwin DLL, which in more recent versions exports
# wrappers to aid in interposing and redirecting operators new, delete,
# etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
# are configuring for a version of Cygwin that exports the wrappers.
if test x$host = x$target && test x$host_cpu = xi686; then
AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
else
# Can't check presence of libc functions during cross-compile, so
# we just have to assume we're building for an up-to-date target.
gcc_ac_cygwin_dll_wrappers=yes
fi
AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
[`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
[Define if you want to generate code by default that assumes that the
Cygwin DLL exports wrappers to support libstdc++ function replacement.])
esac
case $target_os in
cygwin* | pe | mingw32* | interix*)
# Recent binutils allows the three-operand form of ".comm" on PE. This
# definition is used unconditionally to initialise the default state of
# the target option variable that governs usage of the feature.
gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
[2,19,52],,[.comm foo,1,32])
AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
[`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
[Define if your assembler supports specifying the alignment
of objects allocated using the GAS .comm command.])
# Used for DWARF 2 in PE
gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
gcc_cv_as_ix86_pe_secrel32,
[2,15,91],,
[.text
foo: nop
.data
.secrel32 foo],
[if test x$gcc_cv_ld != x \
&& $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
gcc_cv_as_ix86_pe_secrel32=yes
fi
rm -f conftest],
[AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
[Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
# Test if the assembler supports the extended form of the .section
# directive that specifies section alignment. LTO support uses this,
# but normally only after installation, so we warn but don't fail the
# configure if LTO is enabled but the assembler does not support it.
gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
[2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
if test x$gcc_cv_as_section_has_align != xyes; then
case ",$enable_languages," in
*,lto,*)
AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
;;
esac
fi
# Test if the assembler supports the section flag 'e' for specifying
# an excluded section.
gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
[2,22,51],,
[.section foo1,"e"
.byte 0,0,0,0])
AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
[`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
[Define if your assembler supports specifying the section flag e.])
;;
esac
gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
gcc_cv_as_ix86_filds,,,
[filds mem; fists mem],,
[AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
[Define if your assembler uses filds and fists mnemonics.])])
gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
gcc_cv_as_ix86_fildq,,,
[fildq mem; fistpq mem],,
[AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
[Define if your assembler uses fildq and fistq mnemonics.])])
gcc_GAS_CHECK_FEATURE([cmov syntax],
gcc_cv_as_ix86_cmov_sun_syntax,,,
[cmovl.l %edx, %eax],,
[AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
[Define if your assembler supports the Sun syntax for cmov.])])
gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
gcc_cv_as_ix86_ffreep,,,
[ffreep %st(1)],,
[AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
[Define if your assembler supports the ffreep mnemonic.])])
gcc_GAS_CHECK_FEATURE([.quad directive],
gcc_cv_as_ix86_quad,,,
[.quad 0],,
[AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
[Define if your assembler supports the .quad directive.])])
gcc_GAS_CHECK_FEATURE([sahf mnemonic],
gcc_cv_as_ix86_sahf,,,
[.code64
sahf],,
[AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
[Define if your assembler supports the sahf mnemonic in 64bit mode.])])
gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
gcc_cv_as_ix86_interunit_movq,,,
[.code64
movq %mm0, %rax
movq %rax, %xmm0])
AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
[`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
[Define if your assembler supports interunit movq mnemonic.])
gcc_GAS_CHECK_FEATURE([hle prefixes],
gcc_cv_as_ix86_hle,,,
[lock xacquire cmpxchg %esi, (%ecx)],,
[AC_DEFINE(HAVE_AS_IX86_HLE, 1,
[Define if your assembler supports HLE prefixes.])])
gcc_GAS_CHECK_FEATURE([swap suffix],
gcc_cv_as_ix86_swap,,,
[movl.s %esp, %ebp],,
[AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
[Define if your assembler supports the swap suffix.])])
gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
gcc_cv_as_ix86_diff_sect_delta,,,
[.section .rodata
.L1:
.long .L2-.L1
.long .L3-.L1
.text
.L3: nop
.L2: nop],,
[AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
[Define if your assembler supports the subtraction of symbols in different sections.])])
# These two are used unconditionally by i386.[ch]; it is to be defined
# to 1 if the feature is present, 0 otherwise.
as_ix86_gotoff_in_data_opt=
if test x$gas = xyes; then
as_ix86_gotoff_in_data_opt="--32"
fi
gcc_GAS_CHECK_FEATURE([GOTOFF in data],
gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
[$as_ix86_gotoff_in_data_opt],
[ .text
.L0:
nop
.data
.long .L0@GOTOFF])
AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
[`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
[Define true if the assembler supports '.long foo@GOTOFF'.])
gcc_GAS_CHECK_FEATURE([rep and lock prefix],
gcc_cv_as_ix86_rep_lock_prefix,,,
[rep movsl
rep ret
rep nop
rep bsf %ecx, %eax
rep bsr %ecx, %eax
lock addl %edi, (%eax,%esi)
lock orl $0, (%esp)],,
[AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
[Define if the assembler supports 'rep , lock '.])])
gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
gcc_cv_as_ix86_ud2,,,
[ud2],,
[AC_DEFINE(HAVE_AS_IX86_UD2, 1,
[Define if your assembler supports the 'ud2' mnemonic.])])
gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
gcc_cv_as_ix86_tlsgdplt,,,
[call tls_gd@tlsgdplt],
[if test x$gcc_cv_ld != x \
&& $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
gcc_cv_as_ix86_tlsgdplt=yes
fi
rm -f conftest],
[AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
[Define if your assembler and linker support @tlsgdplt.])])
conftest_s='
.section .tdata,"aw'$tls_section_flag'",@progbits
tls_ld:
.section .text,"ax",@progbits
call tls_ld@tlsldmplt'
gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
gcc_cv_as_ix86_tlsldmplt,,,
[$conftest_s],
[if test x$gcc_cv_ld != x \
&& $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
gcc_cv_as_ix86_tlsldmplt=yes
fi
rm -f conftest])
AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
[`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
[Define to 1 if your assembler and linker support @tlsldmplt.])
# Enforce 32-bit output with gas and gld.
if test x$gas = xyes; then
as_ix86_tls_ldm_opt="--32"
fi
if echo "$ld_ver" | grep GNU > /dev/null; then
if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
ld_ix86_tls_ldm_opt="-melf_i386_sol2"
else
ld_ix86_tls_ldm_opt="-melf_i386"
fi
fi
conftest_s='
.section .text,"ax",@progbits
.globl _start
.type _start, @function
_start:
leal value@tlsldm(%ebx), %eax
call ___tls_get_addr@plt
.section .tdata,"aw'$tls_section_flag'",@progbits
.type value, @object
value:'
gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
gcc_cv_as_ix86_tlsldm,,
[$as_ix86_tls_ldm_opt],
[$conftest_s],
[if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
&& $gcc_cv_ld $ld_ix86_tls_ldm_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
|| dis conftest 2>/dev/null | grep nop > /dev/null; then
gcc_cv_as_ix86_tlsldm=yes
fi
fi
rm -f conftest])
AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
[`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
[Define to 1 if your assembler and linker support @tlsldm.])
;;
ia64*-*-*)
gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
[ .text
addl r15 = @ltoffx(x#), gp
;;
ld8.mov r16 = [[r15]], x#],,
[AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
[Define if your assembler supports ltoffx and ldxmov relocations.])])
;;
powerpc*-*-*)
case $target in
*-*-aix*) conftest_s=' .machine "pwr5"
.csect .text[[PR]]
mfcr 3,128';;
*-*-darwin*)
gcc_GAS_CHECK_FEATURE([.machine directive support],
gcc_cv_as_machine_directive,,,
[ .machine ppc7400])
if test x$gcc_cv_as_machine_directive != xyes; then
echo "*** This target requires an assembler supporting \".machine\"" >&2
echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
test x$build = x$target && exit 1
fi
conftest_s=' .text
mfcr r3,128';;
*) conftest_s=' .machine power4
.text
mfcr 3,128';;
esac
gcc_GAS_CHECK_FEATURE([mfcr field support],
gcc_cv_as_powerpc_mfcrf, [2,14,0],,
[$conftest_s],,
[AC_DEFINE(HAVE_AS_MFCRF, 1,
[Define if your assembler supports mfcr field.])])
case $target in
*-*-aix*) conftest_s=' .machine "pwr5"
.csect .text[[PR]]
popcntb 3,3';;
*) conftest_s=' .machine power5
.text
popcntb 3,3';;
esac
gcc_GAS_CHECK_FEATURE([popcntb support],
gcc_cv_as_powerpc_popcntb, [2,17,0],,
[$conftest_s],,
[AC_DEFINE(HAVE_AS_POPCNTB, 1,
[Define if your assembler supports popcntb field.])])
case $target in
*-*-aix*) conftest_s=' .machine "pwr5x"
.csect .text[[PR]]
frin 1,1';;
*) conftest_s=' .machine power5
.text
frin 1,1';;
esac
gcc_GAS_CHECK_FEATURE([fp round support],
gcc_cv_as_powerpc_fprnd, [2,17,0],,
[$conftest_s],,
[AC_DEFINE(HAVE_AS_FPRND, 1,
[Define if your assembler supports fprnd.])])
case $target in
*-*-aix*) conftest_s=' .machine "pwr6"
.csect .text[[PR]]
mffgpr 1,3';;
*) conftest_s=' .machine power6
.text
mffgpr 1,3';;
esac
gcc_GAS_CHECK_FEATURE([move fp gpr support],
gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
[$conftest_s],,
[AC_DEFINE(HAVE_AS_MFPGPR, 1,
[Define if your assembler supports mffgpr and mftgpr.])])
case $target in
*-*-aix*) conftest_s=' .csect .text[[PR]]
LCF..0:
addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
*-*-darwin*)
conftest_s=' .text
LCF0:
addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
*) conftest_s=' .text
.LCF0:
addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
esac
gcc_GAS_CHECK_FEATURE([rel16 relocs],
gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
[$conftest_s],,
[AC_DEFINE(HAVE_AS_REL16, 1,
[Define if your assembler supports R_PPC_REL16 relocs.])])
case $target in
*-*-aix*) conftest_s=' .machine "pwr6"
.csect .text[[PR]]
cmpb 3,4,5';;
*) conftest_s=' .machine power6
.text
cmpb 3,4,5';;
esac
gcc_GAS_CHECK_FEATURE([compare bytes support],
gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
[$conftest_s],,
[AC_DEFINE(HAVE_AS_CMPB, 1,
[Define if your assembler supports cmpb.])])
case $target in
*-*-aix*) conftest_s=' .machine "pwr6"
.csect .text[[PR]]
dadd 1,2,3';;
*) conftest_s=' .machine power6
.text
dadd 1,2,3';;
esac
gcc_GAS_CHECK_FEATURE([decimal float support],
gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
[$conftest_s],,
[AC_DEFINE(HAVE_AS_DFP, 1,
[Define if your assembler supports DFP instructions.])])
case $target in
*-*-aix*) conftest_s=' .machine "pwr7"
.csect .text[[PR]]
lxvd2x 1,2,3';;
*) conftest_s=' .machine power7
.text
lxvd2x 1,2,3';;
esac
gcc_GAS_CHECK_FEATURE([vector-scalar support],
gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
[$conftest_s],,
[AC_DEFINE(HAVE_AS_VSX, 1,
[Define if your assembler supports VSX instructions.])])
case $target in
*-*-aix*) conftest_s=' .machine "pwr7"
.csect .text[[PR]]
popcntd 3,3';;
*) conftest_s=' .machine power7
.text
popcntd 3,3';;
esac
gcc_GAS_CHECK_FEATURE([popcntd support],
gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
[$conftest_s],,
[AC_DEFINE(HAVE_AS_POPCNTD, 1,
[Define if your assembler supports POPCNTD instructions.])])
case $target in
*-*-aix*) conftest_s=' .machine "pwr8"
.csect .text[[PR]]';;
*) conftest_s=' .machine power8
.text';;
esac
gcc_GAS_CHECK_FEATURE([power8 support],
gcc_cv_as_powerpc_power8, [2,19,2], -a32,
[$conftest_s],,
[AC_DEFINE(HAVE_AS_POWER8, 1,
[Define if your assembler supports POWER8 instructions.])])
case $target in
*-*-aix*) conftest_s=' .csect .text[[PR]]
lwsync';;
*) conftest_s=' .text
lwsync';;
esac
gcc_GAS_CHECK_FEATURE([lwsync support],
gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
[$conftest_s],,
[AC_DEFINE(HAVE_AS_LWSYNC, 1,
[Define if your assembler supports LWSYNC instructions.])])
case $target in
*-*-aix*) conftest_s=' .machine "476"
.csect .text[[PR]]
dci 0';;
*) conftest_s=' .machine "476"
.text
dci 0';;
esac
gcc_GAS_CHECK_FEATURE([data cache invalidate support],
gcc_cv_as_powerpc_dci, [9,99,0], -a32,
[$conftest_s],,
[AC_DEFINE(HAVE_AS_DCI, 1,
[Define if your assembler supports the DCI/ICI instructions.])])
gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
[.gnu_attribute 4,1],,
[AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
[Define if your assembler supports .gnu_attribute.])])
gcc_GAS_CHECK_FEATURE([tls marker support],
gcc_cv_as_powerpc_tls_markers, [2,20,0],,
[ bl __tls_get_addr(x@tlsgd)],,
[AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
[Define if your assembler supports arg info for __tls_get_addr.])])
case $target in
*-*-aix*)
gcc_GAS_CHECK_FEATURE([.ref support],
gcc_cv_as_aix_ref, [2,21,0],,
[ .csect stuff[[rw]]
stuff:
.long 1
.extern sym
.ref sym
],,
[AC_DEFINE(HAVE_AS_REF, 1,
[Define if your assembler supports .ref])])
;;
esac
;;
mips*-*-*)
gcc_GAS_CHECK_FEATURE([explicit relocation support],
gcc_cv_as_mips_explicit_relocs, [2,14,0],,
[ lw $4,%gp_rel(foo)($4)],,
[if test x$target_cpu_default = x
then target_cpu_default=MASK_EXPLICIT_RELOCS
else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
fi])
gcc_GAS_CHECK_FEATURE([-mno-shared support],
gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
[AC_DEFINE(HAVE_AS_NO_SHARED, 1,
[Define if the assembler understands -mno-shared.])])
gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
gcc_cv_as_mips_gnu_attribute, [2,18,0],,
[.gnu_attribute 4,1],,
[AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
[Define if your assembler supports .gnu_attribute.])])
gcc_GAS_CHECK_FEATURE([.micromips support],
gcc_cv_as_micromips_support,,[--fatal-warnings],
[.set micromips],,
[AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
[Define if your assembler supports the .set micromips directive])])
gcc_GAS_CHECK_FEATURE([.dtprelword support],
gcc_cv_as_mips_dtprelword, [2,18,0],,
[.section .tdata,"awT",@progbits
x:
.word 2
.text
.dtprelword x+0x8000],,
[AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
[Define if your assembler supports .dtprelword.])])
gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
gcc_cv_as_mips_dspr1_mult,,,
[ .set mips32r2
.set nodspr2
.set dsp
madd $ac3,$4,$5
maddu $ac3,$4,$5
msub $ac3,$4,$5
msubu $ac3,$4,$5
mult $ac3,$4,$5
multu $ac3,$4,$5],,
[AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
[Define if your assembler supports DSPR1 mult.])])
AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
gcc_cv_as_ld_jalr_reloc=no
if test $gcc_cv_as_mips_explicit_relocs = yes; then
if test $in_tree_ld = yes ; then
if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
&& test $in_tree_ld_is_elf = yes; then
gcc_cv_as_ld_jalr_reloc=yes
fi
elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
echo ' .ent x' > conftest.s
echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
echo ' lw $25,%call16(y)($28)' >> conftest.s
echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
echo '1: jalr $25' >> conftest.s
echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
echo '1: jalr $25' >> conftest.s
echo ' .end x' >> conftest.s
if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
&& $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
&& $gcc_cv_objdump -d conftest.so | grep "bal.*" >/dev/null 2>&1; then
gcc_cv_as_ld_jalr_reloc=yes
fi
fi
rm -f conftest.*
fi
fi
if test $gcc_cv_as_ld_jalr_reloc = yes; then
if test x$target_cpu_default = x; then
target_cpu_default=MASK_RELAX_PIC_CALLS
else
target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
fi
fi
AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
[gcc_cv_ld_mips_personality_relaxation],
[gcc_cv_ld_mips_personality_relaxation=no
if test $in_tree_ld = yes ; then
if test "$gcc_cv_gld_major_version" -eq 2 \
-a "$gcc_cv_gld_minor_version" -ge 21 \
-o "$gcc_cv_gld_major_version" -gt 2; then
gcc_cv_ld_mips_personality_relaxation=yes
fi
elif test x$gcc_cv_as != x \
-a x$gcc_cv_ld != x \
-a x$gcc_cv_readelf != x ; then
cat > conftest.s < /dev/null 2>&1 \
&& $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
if $gcc_cv_readelf -d conftest 2>&1 \
| grep TEXTREL > /dev/null 2>&1; then
:
elif $gcc_cv_readelf --relocs conftest 2>&1 \
| grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
:
else
gcc_cv_ld_mips_personality_relaxation=yes
fi
fi
fi
rm -f conftest.s conftest.o conftest])
if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
[Define if your linker can relax absolute .eh_frame personality
pointers into PC-relative form.])
fi
gcc_GAS_CHECK_FEATURE([-mnan= support],
gcc_cv_as_mips_nan,,
[-mnan=2008],,,
[AC_DEFINE(HAVE_AS_NAN, 1,
[Define if the assembler understands -mnan=.])])
if test x$gcc_cv_as_mips_nan = xno \
&& test x$with_nan != x; then
AC_MSG_ERROR(
[Requesting --with-nan= requires assembler support for -mnan=])
fi
;;
esac
# Mips and HP-UX need the GNU assembler.
# Linux on IA64 might be able to use the Intel assembler.
case "$target" in
mips*-*-* | *-*-hpux* )
if test x$gas_flag = xyes \
|| test x"$host" != x"$build" \
|| test ! -x "$gcc_cv_as" \
|| "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
:
else
echo "*** This configuration requires the GNU assembler" >&2
exit 1
fi
;;
esac
# ??? Not all targets support dwarf2 debug_line, even within a version
# of gas. Moreover, we need to emit a valid instruction to trigger any
# info to the output file. So, as supported targets are added to gas 2.11,
# add some instruction here to (also) show we expect this might work.
# ??? Once 2.11 is released, probably need to add first known working
# version to the per-target configury.
case "$cpu_type" in
aarch64 | alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze \
| mips | nios2 | pa | rs6000 | score | sparc | spu | tilegx | tilepro \
| xstormy16 | xtensa)
insn="nop"
;;
ia64 | s390)
insn="nop 0"
;;
mmix)
insn="swym 0"
;;
esac
if test x"$insn" != x; then
conftest_s="\
.file 1 \"conftest.s\"
.loc 1 3 0
$insn"
gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
gcc_cv_as_dwarf2_debug_line,
[elf,2,11,0],, [$conftest_s],
[if test x$gcc_cv_objdump != x \
&& $gcc_cv_objdump -h conftest.o 2> /dev/null \
| grep debug_line > /dev/null 2>&1; then
gcc_cv_as_dwarf2_debug_line=yes
fi])
# The .debug_line file table must be in the exact order that
# we specified the files, since these indices are also used
# by DW_AT_decl_file. Approximate this test by testing if
# the assembler bitches if the same index is assigned twice.
gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
gcc_cv_as_dwarf2_file_buggy,,,
[ .file 1 "foo.s"
.file 1 "bar.s"])
if test $gcc_cv_as_dwarf2_debug_line = yes \
&& test $gcc_cv_as_dwarf2_file_buggy = no; then
AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
[Define if your assembler supports dwarf2 .file/.loc directives,
and preserves file table indices exactly as given.])
fi
gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
gcc_cv_as_gdwarf2_flag,
[elf,2,11,0], [--gdwarf2], [$insn],,
[AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
[Define if your assembler supports the --gdwarf2 option.])])
gcc_GAS_CHECK_FEATURE([--gstabs option],
gcc_cv_as_gstabs_flag,
[elf,2,11,0], [--gstabs], [$insn],,
[AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
[Define if your assembler supports the --gstabs option.])])
gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
gcc_cv_as_debug_prefix_map_flag,
[2,18,0], [--debug-prefix-map /a=/b], [$insn],,
[AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
[Define if your assembler supports the --debug-prefix-map option.])])
fi
gcc_GAS_CHECK_FEATURE([compressed debug sections],
gcc_cv_as_compress_debug,,[--compress-debug-sections],,
[# gas compiled without zlib cannot compress debug sections and warns
# about it, but still exits successfully. So check for this, too.
if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
then
gcc_cv_as_compress_debug=0
elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
then
gcc_cv_as_compress_debug=1
gcc_cv_as_compress_debug_option="--compress-debug-sections"
gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
else
gcc_cv_as_compress_debug=0
# FIXME: Future gas versions will support ELF gABI style via
# --compress-debug-sections[=type].
fi])
AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
[Define to the level of your assembler's compressed debug section support.])
AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
[Define to the assembler option to enable compressed debug sections.])
AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
[Define to the assembler option to disable compressed debug sections.])
gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
,,
[.lcomm bar,4,16],,
[AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
[Define if your assembler supports .lcomm with an alignment field.])])
if test x$with_sysroot = x && test x$host = x$target \
&& test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
&& test "$prefix" != "NONE"; then
AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
[Define to PREFIX/include if cpp should also search that directory.])
fi
if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
if test "x$with_headers" != x; then
target_header_dir=$with_headers
elif test "x$with_sysroot" = x; then
target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
elif test "x$with_build_sysroot" != "x"; then
target_header_dir="${with_build_sysroot}${native_system_header_dir}"
elif test "x$with_sysroot" = xyes; then
target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
else
target_header_dir="${with_sysroot}${native_system_header_dir}"
fi
else
target_header_dir=${native_system_header_dir}
fi
# Determine the version of glibc, if any, used on the target.
AC_MSG_CHECKING([for target glibc version])
AC_ARG_WITH([glibc-version],
[AS_HELP_STRING([--with-glibc-version=M.N],
[assume GCC used with glibc version M.N or later])], [
if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
else
AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
fi], [
glibc_version_major=0
glibc_version_minor=0
[if test -f $target_header_dir/features.h \
&& glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
&& glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
fi]])
AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
AC_ARG_ENABLE(gnu-unique-object,
[AS_HELP_STRING([--enable-gnu-unique-object],
[enable the use of the @gnu_unique_object ELF extension on glibc systems])],
[case $enable_gnu_unique_object in
yes | no) ;;
*) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
Valid choices are 'yes' and 'no'.]) ;;
esac],
[gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
[elf,2,19,52],,
[.type foo, '$target_type_format_char'gnu_unique_object],,
# We need to unquote above to to use the definition from config.gcc.
# Also check for ld.so support, i.e. glibc 2.11 or higher.
[GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
)])
if test x$enable_gnu_unique_object = xyes; then
AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
[Define if your assembler supports @gnu_unique_object.])
fi
AC_CACHE_CHECK([assembler for tolerance to line number 0],
[gcc_cv_as_line_zero],
[gcc_cv_as_line_zero=no
if test $in_tree_gas = yes; then
gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
elif test "x$gcc_cv_as" != x; then
{ echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
test "x`cat conftest.out`" = x
then
gcc_cv_as_line_zero=yes
else
echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
cat conftest.s >&AS_MESSAGE_LOG_FD
echo "configure: error output was" >&AS_MESSAGE_LOG_FD
cat conftest.out >&AS_MESSAGE_LOG_FD
fi
rm -f conftest.o conftest.s conftest.out
fi])
if test "x$gcc_cv_as_line_zero" = xyes; then
AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
[Define if the assembler won't complain about a line such as # 0 "" 2.])
fi
AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
gcc_cv_ld_eh_frame_hdr=no
if test $in_tree_ld = yes ; then
if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
&& test $in_tree_ld_is_elf = yes; then
gcc_cv_ld_eh_frame_hdr=yes
fi
elif test x$gcc_cv_ld != x; then
if echo "$ld_ver" | grep GNU > /dev/null; then
# Check if linker supports --eh-frame-hdr option
if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
gcc_cv_ld_eh_frame_hdr=yes
fi
else
case "$target" in
*-*-solaris2*)
# Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
gcc_cv_ld_eh_frame_hdr=yes
fi
;;
esac
fi
fi
GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
[Define if your linker supports .eh_frame_hdr.])
fi
AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
gcc_cv_ld_eh_frame_ciev3=no
if test $in_tree_ld = yes ; then
if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
&& test $in_tree_ld_is_elf = yes; then
gcc_cv_ld_eh_frame_ciev3=yes
fi
elif test x$gcc_cv_ld != x; then
if echo "$ld_ver" | grep GNU > /dev/null; then
gcc_cv_ld_eh_frame_ciev3=yes
if test 0"$ld_date" -lt 20040513; then
if test -n "$ld_date"; then
# If there was date string, but was earlier than 2004-05-13, fail
gcc_cv_ld_eh_frame_ciev3=no
elif test "$ld_vers_major" -lt 2; then
gcc_cv_ld_eh_frame_ciev3=no
elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
gcc_cv_ld_eh_frame_ciev3=no
fi
fi
else
case "$target" in
*-*-solaris2*)
# Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
gcc_cv_ld_eh_frame_ciev3=yes
fi
;;
esac
fi
fi
AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
[`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
[Define 0/1 if your linker supports CIE v3 in .eh_frame.])
AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
AC_MSG_CHECKING(linker position independent executable support)
gcc_cv_ld_pie=no
if test $in_tree_ld = yes ; then
if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
&& test $in_tree_ld_is_elf = yes; then
gcc_cv_ld_pie=yes
fi
elif test x$gcc_cv_ld != x; then
# Check if linker supports -pie option
if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
gcc_cv_ld_pie=yes
fi
fi
if test x"$gcc_cv_ld_pie" = xyes; then
AC_DEFINE(HAVE_LD_PIE, 1,
[Define if your linker supports -pie option.])
fi
AC_MSG_RESULT($gcc_cv_ld_pie)
AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
gcc_cv_ld_eh_gc_sections=no
if test $in_tree_ld = yes ; then
if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
&& test $in_tree_ld_is_elf = yes; then
gcc_cv_ld_eh_gc_sections=yes
fi
elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
cat > conftest.s < /dev/null 2>&1; then
if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
| grep "gc-sections option ignored" > /dev/null; then
gcc_cv_ld_eh_gc_sections=no
elif $gcc_cv_objdump -h conftest 2> /dev/null \
| grep gcc_except_table > /dev/null; then
gcc_cv_ld_eh_gc_sections=yes
# If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
if test x$gcc_cv_as_comdat_group != xyes; then
gcc_cv_ld_eh_gc_sections=no
cat > conftest.s < /dev/null 2>&1; then
if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
| grep "gc-sections option ignored" > /dev/null; then
gcc_cv_ld_eh_gc_sections=no
elif $gcc_cv_objdump -h conftest 2> /dev/null \
| grep gcc_except_table > /dev/null; then
gcc_cv_ld_eh_gc_sections=yes
fi
fi
fi
fi
fi
rm -f conftest.s conftest.o conftest
fi
case "$target" in
hppa*-*-linux*)
# ??? This apparently exposes a binutils bug with PC-relative relocations.
gcc_cv_ld_eh_gc_sections=no
;;
esac
if test x$gcc_cv_ld_eh_gc_sections = xyes; then
AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
[Define if your linker supports garbage collection of
sections in presence of EH frames.])
fi
AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
AC_MSG_CHECKING(linker EH garbage collection of sections bug)
gcc_cv_ld_eh_gc_sections_bug=no
if test $in_tree_ld = yes ; then
if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
&& test $in_tree_ld_is_elf = yes; then
gcc_cv_ld_eh_gc_sections_bug=yes
fi
elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x -a x$gcc_cv_as_comdat_group = xyes; then
gcc_cv_ld_eh_gc_sections_bug=yes
cat > conftest.s < /dev/null 2>&1; then
if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
| grep "gc-sections option ignored" > /dev/null; then
:
elif $gcc_cv_objdump -h conftest 2> /dev/null \
| grep gcc_except_table > /dev/null; then
gcc_cv_ld_eh_gc_sections_bug=no
fi
fi
rm -f conftest.s conftest.o conftest
fi
if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
[Define if your linker has buggy garbage collection of
sections support when .text.startup.foo like sections are used.])
fi
AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
AC_MSG_CHECKING(linker for compressed debug sections)
# gold/gld support compressed debug sections since binutils 2.19/2.21
if test $in_tree_ld = yes ; then
gcc_cv_ld_compress_debug=0
if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
&& test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
gcc_cv_ld_compress_debug=2
gcc_cv_ld_compress_debug_option="--compress-debug-sections"
elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
&& test $in_tree_ld_is_elf = yes; then
gcc_cv_ld_compress_debug=1
fi
elif echo "$ld_ver" | grep GNU > /dev/null; then
gcc_cv_ld_compress_debug=1
if test 0"$ld_date" -lt 20050308; then
if test -n "$ld_date"; then
# If there was date string, but was earlier than 2005-03-08, fail
gcc_cv_ld_compress_debug=0
elif test "$ld_vers_major" -lt 2; then
gcc_cv_ld_compress_debug=0
elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
gcc_cv_ld_compress_debug=0
fi
fi
if test $ld_is_gold = yes; then
gcc_cv_ld_compress_debug=2
gcc_cv_ld_compress_debug_option="--compress-debug-sections"
fi
else
changequote(,)dnl
case "${target}" in
*-*-solaris2*)
# Introduced in Solaris 11.2.
if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
gcc_cv_ld_compress_debug=3
gcc_cv_ld_compress_debug_option="-z compress-sections"
else
gcc_cv_ld_compress_debug=0
fi
;;
*)
# Assume linkers other than GNU ld don't support compessed debug
# sections.
gcc_cv_ld_compress_debug=0
;;
esac
changequote([,])dnl
fi
AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
[Define to the level of your linker's compressed debug section support.])
AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
[Define to the linker option to enable compressed debug sections.])
AC_MSG_RESULT($gcc_cv_ld_compress_debug)
# --------
# UNSORTED
# --------
AC_CACHE_CHECK(linker --as-needed support,
gcc_cv_ld_as_needed,
[gcc_cv_ld_as_needed=no
gcc_cv_ld_as_needed_option='--as-needed'
gcc_cv_ld_no_as_needed_option='--no-as-needed'
if test $in_tree_ld = yes ; then
if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
&& test $in_tree_ld_is_elf = yes; then
gcc_cv_ld_as_needed=yes
fi
elif test x$gcc_cv_ld != x; then
# Check if linker supports --as-needed and --no-as-needed options
if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
gcc_cv_ld_as_needed=yes
else
case "$target" in
# Solaris 2 ld always supports -z ignore/-z record.
*-*-solaris2*)
gcc_cv_ld_as_needed=yes
gcc_cv_ld_as_needed_option="-z ignore"
gcc_cv_ld_no_as_needed_option="-z record"
;;
esac
fi
fi
# --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
# dl_iterate_phdr, i.e. since Solaris 11.
case "$target" in
*-*-solaris2.1[[1-9]]*)
case "$target" in
i?86-*-* | x86_64-*-*)
if echo "$ld_ver" | grep GNU > /dev/null; then
# Doesn't work with gld on Solaris/x86 due to PR ld/12320.
gcc_cv_ld_as_needed=no
fi
;;
esac
;;
*-*-solaris2*)
gcc_cv_ld_as_needed=no
;;
esac
])
if test x"$gcc_cv_ld_as_needed" = xyes; then
AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
[Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
[Define to the linker option to ignore unused dependencies.])
AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
[Define to the linker option to keep unused dependencies.])
fi
AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
saved_LDFLAGS="$LDFLAGS"
for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
AC_LINK_IFELSE([int main(void) {return 0;}],
[gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
done
LDFLAGS="$saved_LDFLAGS"
if test "x$gcc_cv_ld_clearcap" = xyes; then
AC_DEFINE([HAVE_LD_CLEARCAP], 1,
[Define if the linker supports clearing hardware capabilities via mapfile.])
AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
fi
AC_MSG_RESULT($gcc_cv_ld_clearcap)
case "$target:$tm_file" in
powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
case "$target" in
*le-*-linux*)
emul_name="-melf64lppc"
;;
*-*-linux*)
emul_name="-melf64ppc"
;;
*-*-freebsd*)
emul_name="-melf64ppc_fbsd"
;;
esac
AC_CACHE_CHECK(linker support for omitting dot symbols,
gcc_cv_ld_no_dot_syms,
[gcc_cv_ld_no_dot_syms=no
if test x"$ld_is_gold" = xyes; then
gcc_cv_ld_no_dot_syms=yes
elif test $in_tree_ld = yes ; then
if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
gcc_cv_ld_no_dot_syms=yes
fi
elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
cat > conftest1.s < conftest2.s < /dev/null 2>&1 \
&& $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
&& $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
gcc_cv_ld_no_dot_syms=yes
fi
rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
fi
])
if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
[Define if your PowerPC64 linker only needs function descriptor syms.])
fi
AC_CACHE_CHECK(linker large toc support,
gcc_cv_ld_large_toc,
[gcc_cv_ld_large_toc=no
if test x"$ld_is_gold" = xyes; then
gcc_cv_ld_large_toc=yes
elif test $in_tree_ld = yes ; then
if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
gcc_cv_ld_large_toc=yes
fi
elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
cat > conftest.s < /dev/null 2>&1 \
&& $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
gcc_cv_ld_large_toc=yes
fi
rm -f conftest conftest.o conftest.s
fi
])
if test x"$gcc_cv_ld_large_toc" = xyes; then
AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
[Define if your PowerPC64 linker supports a large TOC.])
fi
;;
esac
case "$target" in
*-*-aix*)
AC_CACHE_CHECK(linker large toc support,
gcc_cv_ld_large_toc,
[gcc_cv_ld_large_toc=no
if test x$gcc_cv_as != x ; then
cat > conftest.s < /dev/null 2>&1; then
gcc_cv_ld_large_toc=yes
fi
rm -f conftest conftest.o conftest.s
fi
])
if test x"$gcc_cv_ld_large_toc" = xyes; then
AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
[Define if your PowerPC64 linker supports a large TOC.])
fi
;;
esac
AC_CACHE_CHECK(linker --build-id support,
gcc_cv_ld_buildid,
[gcc_cv_ld_buildid=no
if test $in_tree_ld = yes ; then
if test "$gcc_cv_gld_major_version" -eq 2 -a \
"$gcc_cv_gld_minor_version" -ge 18 -o \
"$gcc_cv_gld_major_version" -gt 2 \
&& test $in_tree_ld_is_elf = yes; then
gcc_cv_ld_buildid=yes
fi
elif test x$gcc_cv_ld != x; then
if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
gcc_cv_ld_buildid=yes
fi
fi])
if test x"$gcc_cv_ld_buildid" = xyes; then
AC_DEFINE(HAVE_LD_BUILDID, 1,
[Define if your linker supports --build-id.])
fi
AC_ARG_ENABLE(linker-build-id,
[AS_HELP_STRING([--enable-linker-build-id],
[compiler will always pass --build-id to linker])],
[],
enable_linker_build_id=no)
if test x"$enable_linker_build_id" = xyes; then
if test x"$gcc_cv_ld_buildid" = xyes; then
AC_DEFINE(ENABLE_LD_BUILDID, 1,
[Define if gcc should always pass --build-id to linker.])
else
AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
fi
fi
# In binutils 2.21, GNU ld gained support for new emulations fully
# supporting the Solaris 2 ABI. Detect their presence in the linker used.
AC_CACHE_CHECK(linker *_sol2 emulation support,
gcc_cv_ld_sol2_emulation,
[gcc_cv_ld_sol2_emulation=no
if test $in_tree_ld = yes ; then
if test "$gcc_cv_gld_major_version" -eq 2 -a \
"$gcc_cv_gld_minor_version" -ge 21 -o \
"$gcc_cv_gld_major_version" -gt 2 \
&& test $in_tree_ld_is_elf = yes; then
gcc_cv_ld_sol2_emulation=yes
fi
elif test x$gcc_cv_ld != x; then
if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
grep _sol2 > /dev/null; then
gcc_cv_ld_sol2_emulation=yes
fi
fi])
if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
[Define if your linker supports the *_sol2 emulations.])
fi
AC_CACHE_CHECK(linker --sysroot support,
gcc_cv_ld_sysroot,
[gcc_cv_ld_sysroot=no
if test $in_tree_ld = yes ; then
if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
gcc_cv_ld_sysroot=yes
fi
elif test x$gcc_cv_ld != x; then
if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
gcc_cv_ld_sysroot=yes
fi
fi])
if test x"$gcc_cv_ld_sysroot" = xyes; then
AC_DEFINE(HAVE_LD_SYSROOT, 1,
[Define if your linker supports --sysroot.])
fi
# Test for stack protector support in target C library.
AC_CACHE_CHECK(__stack_chk_fail in target C library,
gcc_cv_libc_provides_ssp,
[gcc_cv_libc_provides_ssp=no
case "$target" in
*-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
# glibc 2.4 and later provides __stack_chk_fail and
# either __stack_chk_guard, or TLS access to stack guard canary.
GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
[if test -f $target_header_dir/features.h \
&& $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
$target_header_dir/features.h > /dev/null; then
if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
$target_header_dir/features.h > /dev/null && \
test -f $target_header_dir/bits/uClibc_config.h && \
$EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
$target_header_dir/bits/uClibc_config.h > /dev/null; then
gcc_cv_libc_provides_ssp=yes
fi
# all versions of Bionic support stack protector
elif test -f $target_header_dir/sys/cdefs.h \
&& $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
$target_header_dir/sys/cdefs.h > /dev/null; then
gcc_cv_libc_provides_ssp=yes
fi]])
;;
*-*-gnu*)
# Avoid complicated tests (see
# ) and for now
# simply assert that glibc does provide this, which is true for all
# realistically usable GNU/Hurd configurations.
gcc_cv_libc_provides_ssp=yes;;
*-*-darwin* | *-*-freebsd*)
AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
[echo "no __stack_chk_fail on this target"])
;;
*) gcc_cv_libc_provides_ssp=no ;;
esac])
if test x$gcc_cv_libc_provides_ssp = xyes; then
AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
[Define if your target C library provides stack protector support])
fi
# Test for on the target.
GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
AC_MSG_CHECKING(sys/sdt.h in the target C library)
have_sys_sdt_h=no
if test -f $target_header_dir/sys/sdt.h; then
have_sys_sdt_h=yes
AC_DEFINE(HAVE_SYS_SDT_H, 1,
[Define if your target C library provides sys/sdt.h])
fi
AC_MSG_RESULT($have_sys_sdt_h)
# Check if TFmode long double should be used by default or not.
# Some glibc targets used DFmode long double, but with glibc 2.4
# and later they can use TFmode.
case "$target" in
powerpc*-*-linux* | \
sparc*-*-linux* | \
s390*-*-linux* | \
alpha*-*-linux*)
AC_ARG_WITH(long-double-128,
[AS_HELP_STRING([--with-long-double-128],
[use 128-bit long double by default])],
gcc_cv_target_ldbl128="$with_long_double_128",
[GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
[gcc_cv_target_ldbl128=no
grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
$target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
&& gcc_cv_target_ldbl128=yes
]])])
;;
esac
if test x$gcc_cv_target_ldbl128 = xyes; then
AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
[Define if TFmode long double should be the default])
fi
AC_MSG_CHECKING(dl_iterate_phdr in target C library)
gcc_cv_target_dl_iterate_phdr=unknown
case "$target" in
# Restrict to Solaris 11+. While most of the Solaris 11 linker changes
# were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
# libdl there, both complicating its use and breaking compatibility
# between Solaris 10 updates.
*-*-solaris2.1[[1-9]]*)
# needs both a dl_iterate_phdr declaration and support for
# compilation with largefile support.
if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
&& grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
gcc_cv_target_dl_iterate_phdr=yes
else
gcc_cv_target_dl_iterate_phdr=no
fi
;;
*-*-dragonfly* | *-*-freebsd*)
if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
gcc_cv_target_dl_iterate_phdr=yes
else
gcc_cv_target_dl_iterate_phdr=no
fi
;;
esac
GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
[Define if your target C library provides the `dl_iterate_phdr' function.])
fi
AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
# We no longer support different GC mechanisms. Emit an error if
# the user configures with --with-gc.
AC_ARG_WITH(gc,
[AS_HELP_STRING([--with-gc={page,zone}],
[this option is not supported anymore. It used to choose
the garbage collection mechanism to use with the compiler])],
[AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
[])
# Libraries to use on the host. This will normally be set by the top
# level Makefile. Here we simply capture the value for our Makefile.
if test -z "${HOST_LIBS+set}"; then
HOST_LIBS=
fi
AC_SUBST(HOST_LIBS)
# Use the system's zlib library.
zlibdir=-L../zlib
zlibinc="-I\$(srcdir)/../zlib"
AC_ARG_WITH(system-zlib,
[AS_HELP_STRING([--with-system-zlib], [use installed libz])],
zlibdir=
zlibinc=
)
AC_SUBST(zlibdir)
AC_SUBST(zlibinc)
dnl Very limited version of automake's enable-maintainer-mode
AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
dnl maintainer-mode is disabled by default
AC_ARG_ENABLE(maintainer-mode,
[AS_HELP_STRING([--enable-maintainer-mode],
[enable make rules and dependencies not useful
(and sometimes confusing) to the casual installer])],
maintainer_mode=$enableval,
maintainer_mode=no)
AC_MSG_RESULT($maintainer_mode)
if test "$maintainer_mode" = "yes"; then
MAINT=''
else
MAINT='#'
fi
AC_SUBST(MAINT)dnl
dnl Whether to prevent multiple front-ends from linking at the same time
AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
AC_ARG_ENABLE(link-mutex,
[AS_HELP_STRING([--enable-link-mutex],
[avoid linking multiple front-ends at once to avoid thrashing
on the build machine])],
do_link_mutex=$enableval,
do_link_mutex=no)
AC_MSG_RESULT($do_link_mutex)
if test "$do_link_mutex" = "yes"; then
DO_LINK_MUTEX=true
else
DO_LINK_MUTEX=false
fi
AC_SUBST(DO_LINK_MUTEX)
# --------------
# Language hooks
# --------------
# Make empty files to contain the specs and options for each language.
# Then add #include lines to for a compiler that has specs and/or options.
subdirs=
lang_opt_files=
lang_specs_files=
lang_tree_files=
# These (without "all_") are set in each config-lang.in.
# `language' must be a single word so is spelled singularly.
all_languages=
all_compilers=
all_outputs='Makefile'
# List of language makefile fragments.
all_lang_makefrags=
# Additional files for gengtype
all_gtfiles="$target_gtfiles"
# These are the languages that are set in --enable-languages,
# and are available in the GCC tree.
all_selected_languages=
# Add the language fragments.
# Languages are added via two mechanisms. Some information must be
# recorded in makefile variables, these are defined in config-lang.in.
# We accumulate them and plug them into the main Makefile.
# The other mechanism is a set of hooks for each of the main targets
# like `clean', `install', etc.
language_hooks="Make-hooks"
for lang in ${srcdir}/*/config-lang.in
do
changequote(,)dnl
test "$lang" = "${srcdir}/*/config-lang.in" && continue
lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
if test "x$lang_alias" = x
then
echo "$lang doesn't set \$language." 1>&2
exit 1
fi
subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
subdirs="$subdirs $subdir"
# $gcc_subdir is where the gcc integration files are to be found
# for a language, both for internal compiler purposes (compiler
# sources implementing front-end to GCC tree converters), and for
# build infrastructure purposes (Make-lang.in, etc.)
#
# This will be (relative to $srcdir) if a line like
# gcc_subdir="" or gcc_subdir=
# is found in /config-lang.in, and will remain
# otherwise.
#
# Except for the language alias (fetched above), the regular
# "config-lang.in" contents are always retrieved from $gcc_subdir,
# so a /config-lang.in setting gcc_subdir typically sets
# only this and the language alias.
gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
if [ "$gcc_subdir" = "" ]; then
gcc_subdir="$subdir"
fi
case ",$enable_languages," in
*,$lang_alias,*)
all_selected_languages="$all_selected_languages $lang_alias"
if test -f $srcdir/$gcc_subdir/lang-specs.h; then
lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
fi
;;
esac
changequote([,])dnl
language=
boot_language=
compilers=
outputs=
gtfiles=
subdir_requires=
. ${srcdir}/$gcc_subdir/config-lang.in
if test "x$language" = x
then
echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
exit 1
fi
ok=:
case ",$enable_languages," in
*,$lang_alias,*) ;;
*)
for i in $subdir_requires; do
test -f "${srcdir}/$i/config-lang.in" && continue
ok=false
break
done
;;
esac
$ok || continue
all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
if test -f $srcdir/$gcc_subdir/lang.opt; then
lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
fi
if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
fi
all_languages="$all_languages $language"
all_compilers="$all_compilers $compilers"
all_outputs="$all_outputs $outputs"
all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
case ",$enable_languages," in
*,lto,*)
AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
enable_lto=yes
AC_SUBST(enable_lto)
;;
*) ;;
esac
done
check_languages=
for language in $all_selected_languages
do
check_languages="$check_languages check-$language"
done
# We link each language in with a set of hooks, reached indirectly via
# lang.${target}. Only do so for selected languages.
rm -f Make-hooks
touch Make-hooks
target_list="all.cross start.encap rest.encap tags \
install-common install-man install-info install-pdf install-html dvi \
pdf html uninstall info man srcextra srcman srcinfo \
mostlyclean clean distclean maintainer-clean install-plugin"
for t in $target_list
do
x=
for lang in $all_selected_languages
do
x="$x $lang.$t"
done
echo "lang.$t: $x" >> Make-hooks
done
# --------
# Option include files
# --------
${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
option_includes="option-includes.mk"
AC_SUBST_FILE(option_includes)
# --------
# UNSORTED
# --------
# Create .gdbinit.
echo "dir ." > .gdbinit
echo "dir ${srcdir}" >> .gdbinit
if test x$gdb_needs_out_file_path = xyes
then
echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
fi
if test "x$subdirs" != x; then
for s in $subdirs
do
echo "dir ${srcdir}/$s" >> .gdbinit
done
fi
echo "source ${srcdir}/gdbinit.in" >> .gdbinit
echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
# Put a breakpoint on __asan_report_error to help with debugging buffer
# overflow.
case "$CFLAGS" in
*-fsanitize=address*)
echo "source ${srcdir}/gdbasan.in" >> .gdbinit
;;
esac
gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
AC_SUBST(gcc_tooldir)
AC_SUBST(dollar)
# Find a directory in which to install a shared libgcc.
AC_ARG_ENABLE(version-specific-runtime-libs,
[AS_HELP_STRING([--enable-version-specific-runtime-libs],
[specify that runtime libraries should be
installed in a compiler-specific directory])])
# Substitute configuration variables
AC_SUBST(subdirs)
AC_SUBST(srcdir)
AC_SUBST(all_compilers)
AC_SUBST(all_gtfiles)
AC_SUBST(all_lang_makefrags)
AC_SUBST(all_languages)
AC_SUBST(all_selected_languages)
AC_SUBST(build_exeext)
AC_SUBST(build_install_headers_dir)
AC_SUBST(build_xm_file_list)
AC_SUBST(build_xm_include_list)
AC_SUBST(build_xm_defines)
AC_SUBST(build_file_translate)
AC_SUBST(check_languages)
AC_SUBST(cpp_install_dir)
AC_SUBST(xmake_file)
AC_SUBST(tmake_file)
AC_SUBST(TM_ENDIAN_CONFIG)
AC_SUBST(TM_MULTILIB_CONFIG)
AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
AC_SUBST(extra_gcc_objs)
AC_SUBST(user_headers_inc_next_pre)
AC_SUBST(user_headers_inc_next_post)
AC_SUBST(extra_headers_list)
AC_SUBST(extra_objs)
AC_SUBST(extra_programs)
AC_SUBST(float_h_file)
AC_SUBST(gcc_config_arguments)
AC_SUBST(gcc_gxx_include_dir)
AC_SUBST(gcc_gxx_include_dir_add_sysroot)
AC_SUBST(host_exeext)
AC_SUBST(host_xm_file_list)
AC_SUBST(host_xm_include_list)
AC_SUBST(host_xm_defines)
AC_SUBST(out_host_hook_obj)
AC_SUBST(install)
AC_SUBST(lang_opt_files)
AC_SUBST(lang_specs_files)
AC_SUBST(lang_tree_files)
AC_SUBST(local_prefix)
AC_SUBST(md_file)
AC_SUBST(objc_boehm_gc)
AC_SUBST(out_file)
AC_SUBST(out_object_file)
AC_SUBST(common_out_file)
AC_SUBST(common_out_object_file)
AC_SUBST(tm_file_list)
AC_SUBST(tm_include_list)
AC_SUBST(tm_defines)
AC_SUBST(tm_p_file_list)
AC_SUBST(tm_p_include_list)
AC_SUBST(xm_file_list)
AC_SUBST(xm_include_list)
AC_SUBST(xm_defines)
AC_SUBST(use_gcc_stdint)
AC_SUBST(c_target_objs)
AC_SUBST(cxx_target_objs)
AC_SUBST(fortran_target_objs)
AC_SUBST(target_cpu_default)
AC_SUBST_FILE(language_hooks)
# Echo link setup.
if test x${build} = x${host} ; then
if test x${host} = x${target} ; then
echo "Links are now set up to build a native compiler for ${target}." 1>&2
else
echo "Links are now set up to build a cross-compiler" 1>&2
echo " from ${host} to ${target}." 1>&2
fi
else
if test x${host} = x${target} ; then
echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
echo " for ${target}." 1>&2
else
echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
echo " from ${host} to ${target}." 1>&2
fi
fi
AC_ARG_VAR(GMPLIBS,[How to link GMP])
AC_ARG_VAR(GMPINC,[How to find GMP include files])
AC_ARG_VAR(ISLLIBS,[How to link ISL])
AC_ARG_VAR(ISLINC,[How to find ISL include files])
if test "x${ISLLIBS}" != "x" ; then
AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
fi
AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
if test "x${CLOOGLIBS}" != "x" ; then
AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
fi
# Check for plugin support
AC_ARG_ENABLE(plugin,
[AS_HELP_STRING([--enable-plugin], [enable plugin support])],
enable_plugin=$enableval,
enable_plugin=yes; default_plugin=yes)
pluginlibs=
case "${host}" in
*-*-darwin*)
if test x$build = x$host; then
export_sym_check="nm${exeext} -g"
elif test x$host = x$target; then
export_sym_check="$gcc_cv_nm -g"
else
export_sym_check=
fi
;;
*)
if test x$build = x$host; then
export_sym_check="objdump${exeext} -T"
elif test x$host = x$target; then
export_sym_check="$gcc_cv_objdump -T"
else
export_sym_check=
fi
;;
esac
if test x"$enable_plugin" = x"yes"; then
AC_MSG_CHECKING([for exported symbols])
if test "x$export_sym_check" != x; then
echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest$ac_exeext > /dev/null 2>&1
if $export_sym_check conftest$ac_exeext | grep -q foobar > /dev/null; then
: # No need to use a flag
AC_MSG_RESULT([yes])
else
AC_MSG_RESULT([yes])
AC_MSG_CHECKING([for -rdynamic])
${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest$ac_exeext > /dev/null 2>&1
if $export_sym_check conftest$ac_exeext | grep -q foobar > /dev/null; then
plugin_rdynamic=yes
pluginlibs="-rdynamic"
else
plugin_rdynamic=no
enable_plugin=no
fi
AC_MSG_RESULT([$plugin_rdynamic])
fi
else
AC_MSG_RESULT([unable to check])
fi
# Check -ldl
saved_LIBS="$LIBS"
AC_SEARCH_LIBS([dlopen], [dl])
if test x"$ac_cv_search_dlopen" = x"-ldl"; then
pluginlibs="$pluginlibs -ldl"
fi
LIBS="$saved_LIBS"
# Check that we can build shared objects with -fPIC -shared
saved_LDFLAGS="$LDFLAGS"
saved_CFLAGS="$CFLAGS"
case "${host}" in
*-*-darwin*)
CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
CFLAGS="$CFLAGS -fPIC"
LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
;;
*)
CFLAGS="$CFLAGS -fPIC"
LDFLAGS="$LDFLAGS -fPIC -shared"
;;
esac
AC_MSG_CHECKING([for -fPIC -shared])
AC_TRY_LINK(
[extern int X;],[return X == 0;],
[AC_MSG_RESULT([yes]); have_pic_shared=yes],
[AC_MSG_RESULT([no]); have_pic_shared=no])
if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
pluginlibs=
enable_plugin=no
fi
LDFLAGS="$saved_LDFLAGS"
CFLAGS="$saved_CFLAGS"
# If plugin support had been requested but not available, fail.
if test x"$enable_plugin" = x"no" ; then
if test x"$default_plugin" != x"yes"; then
AC_MSG_ERROR([
Building GCC with plugin support requires a host that supports
-fPIC, -shared, -ldl and -rdynamic.])
fi
fi
fi
AC_SUBST(pluginlibs)
AC_SUBST(enable_plugin)
if test x"$enable_plugin" = x"yes"; then
AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
fi
# Enable --enable-host-shared
AC_ARG_ENABLE(host-shared,
[AS_HELP_STRING([--enable-host-shared],
[build host code as shared libraries])],
[PICFLAG=-fPIC], [PICFLAG=])
AC_SUBST(enable_host_shared)
AC_SUBST(PICFLAG)
AC_ARG_ENABLE(libquadmath-support,
[AS_HELP_STRING([--disable-libquadmath-support],
[disable libquadmath support for Fortran])],
ENABLE_LIBQUADMATH_SUPPORT=$enableval,
ENABLE_LIBQUADMATH_SUPPORT=yes)
if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
[Define to 1 to enable libquadmath support])
fi
# Specify what hash style to use by default.
AC_ARG_WITH([linker-hash-style],
[AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
[specify the linker hash style])],
[case x"$withval" in
xsysv)
LINKER_HASH_STYLE=sysv
;;
xgnu)
LINKER_HASH_STYLE=gnu
;;
xboth)
LINKER_HASH_STYLE=both
;;
*)
AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
;;
esac],
[LINKER_HASH_STYLE=''])
if test x"${LINKER_HASH_STYLE}" != x; then
AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
[The linker hash style])
fi
# Configure the subdirectories
# AC_CONFIG_SUBDIRS($subdirs)
# Create the Makefile
# and configure language subdirectories
AC_CONFIG_FILES($all_outputs)
AC_CONFIG_COMMANDS([default],
[
case ${CONFIG_HEADERS} in
*auto-host.h:config.in*)
echo > cstamp-h ;;
esac
# Make sure all the subdirs exist.
for d in $subdirs doc build common c-family
do
test -d $d || mkdir $d
done
],
[subdirs='$subdirs'])
AC_OUTPUT