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Diffstat (limited to 'ld/configure.ac')
| -rw-r--r-- | ld/configure.ac | 411 |
1 files changed, 411 insertions, 0 deletions
diff --git a/ld/configure.ac b/ld/configure.ac new file mode 100644 index 0000000..d1bf1e4 --- /dev/null +++ b/ld/configure.ac @@ -0,0 +1,411 @@ +dnl Process this file with autoconf to produce a configure script +dnl +dnl Copyright (C) 2012-2014 Free Software Foundation, Inc. +dnl +dnl This file is free software; you can redistribute it and/or modify +dnl it under the terms of the GNU General Public License as published by +dnl the Free Software Foundation; either version 3 of the License, or +dnl (at your option) any later version. +dnl +dnl This program is distributed in the hope that it will be useful, +dnl but WITHOUT ANY WARRANTY; without even the implied warranty of +dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +dnl GNU General Public License for more details. +dnl +dnl You should have received a copy of the GNU General Public License +dnl along with this program; see the file COPYING3. If not see +dnl <http://www.gnu.org/licenses/>. +dnl + +AC_PREREQ(2.59) +m4_include([../bfd/version.m4]) +AC_INIT([ld], BFD_VERSION) +AC_CONFIG_SRCDIR(ldmain.c) + +AC_CANONICAL_TARGET +AC_CANONICAL_BUILD +AC_ISC_POSIX + +AM_INIT_AUTOMAKE +AM_MAINTAINER_MODE + +AC_ARG_WITH(lib-path, [ --with-lib-path=dir1:dir2... set default LIB_PATH],LIB_PATH=$withval) +AC_ARG_ENABLE(targets, +[ --enable-targets alternative target configurations], +[case "${enableval}" in + yes | "") AC_MSG_ERROR(enable-targets option must specify target names or 'all') + ;; + no) enable_targets= ;; + *) enable_targets=$enableval ;; +esac])dnl +AC_ARG_ENABLE(64-bit-bfd, +[ --enable-64-bit-bfd 64-bit support (on hosts with narrower word sizes)], +[case "${enableval}" in + yes) want64=true ;; + no) want64=false ;; + *) AC_MSG_ERROR(bad value ${enableval} for 64-bit-bfd option) ;; +esac],[want64=false])dnl + +AC_ARG_WITH(sysroot, +[ --with-sysroot[=DIR] Search for usr/lib et al within DIR.], +[ + case ${with_sysroot} in + yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_alias}/sys-root' ;; + *) TARGET_SYSTEM_ROOT=$with_sysroot ;; + esac + + TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"' + use_sysroot=yes + + if test "x$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 + 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="$t" + ;; + esac +], [ + use_sysroot=no + TARGET_SYSTEM_ROOT= + TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"\"' +]) +AC_SUBST(use_sysroot) +AC_SUBST(TARGET_SYSTEM_ROOT) +AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE) + +dnl Use --enable-gold to decide if this linker should be the default. +dnl "install_as_default" is set to false if gold is the default linker. +dnl "installed_linker" is the installed BFD linker name. +AC_ARG_ENABLE(gold, +[[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]], +[case "${enableval}" in + default) + install_as_default=no + installed_linker=ld.bfd + ;; + yes|no) + install_as_default=yes + installed_linker=ld.bfd + ;; + *) + AC_MSG_ERROR([invalid --enable-gold argument]) + ;; + esac], +[install_as_default=yes + installed_linker=ld.bfd]) +AC_SUBST(install_as_default) +AC_SUBST(installed_linker) + +AC_ARG_ENABLE([got], +AS_HELP_STRING([--enable-got=<type>], + [GOT handling scheme (target, single, negative, multigot)]), +[case "${enableval}" in + target | single | negative | multigot) got_handling=$enableval ;; + *) AC_MSG_ERROR(bad value ${enableval} for --enable-got option) ;; +esac], +[got_handling=target]) + +case "${got_handling}" in + target) + AC_DEFINE([GOT_HANDLING_DEFAULT], [GOT_HANDLING_TARGET_DEFAULT], + [Define to choose default GOT handling scheme]) ;; + single) + AC_DEFINE([GOT_HANDLING_DEFAULT], [GOT_HANDLING_SINGLE], + [Define to choose default GOT handling scheme]) ;; + negative) + AC_DEFINE([GOT_HANDLING_DEFAULT], [GOT_HANDLING_NEGATIVE], + [Define to choose default GOT handling scheme]) ;; + multigot) + AC_DEFINE([GOT_HANDLING_DEFAULT], [GOT_HANDLING_MULTIGOT], + [Define to choose default GOT handling scheme]) ;; + *) AC_MSG_ERROR(bad value ${got_handling} for --enable-got option) ;; +esac + +AM_BINUTILS_WARNINGS + +AM_LC_MESSAGES + +AC_CONFIG_HEADERS([config.h:config.in]) + +# PR 14072 +AH_VERBATIM([00_CONFIG_H_CHECK], +[/* Check that config.h is #included before system headers + (this works only for glibc, but that should be enough). */ +#if defined(__GLIBC__) && !defined(__FreeBSD_kernel__) && !defined(__CONFIG_H__) +# error config.h must be #included before system headers +#endif +#define __CONFIG_H__ 1]) + +if test -z "$target" ; then + AC_MSG_ERROR(Unrecognized target system type; please check config.sub.) +fi +if test -z "$host" ; then + AC_MSG_ERROR(Unrecognized host system type; please check config.sub.) +fi + +# host-specific stuff: + +AC_PROG_CC +AC_PROG_CXX +AC_GNU_SOURCE +AC_USE_SYSTEM_EXTENSIONS +ACX_LARGEFILE +AC_PROG_INSTALL + +LT_INIT + +ALL_LINGUAS="fr sv tr es da vi zh_CN zh_TW ga fi id bg it uk" +ZW_GNU_GETTEXT_SISTER_DIR +AM_PO_SUBDIRS + +AC_EXEEXT + +AC_PROG_YACC +AM_PROG_LEX + +AM_MAINTAINER_MODE +AM_CONDITIONAL(GENINSRC_NEVER, false) +ACX_PROG_CMP_IGNORE_INITIAL + +. ${srcdir}/configure.host + +AC_SUBST(HDEFINES) +AC_SUBST(HOSTING_CRT0) +AC_SUBST(HOSTING_SCRT0) +AC_SUBST(HOSTING_LIBS) +AC_SUBST(HOSTING_SLIBS) +AC_SUBST(NATIVE_LIB_DIRS) + +AC_CHECK_HEADERS(string.h strings.h stdlib.h unistd.h elf-hints.h limits.h locale.h sys/param.h) +AC_CHECK_HEADERS(fcntl.h sys/file.h sys/time.h sys/stat.h) +ACX_HEADER_STRING +AC_CHECK_FUNCS(glob mkstemp realpath sbrk setlocale waitpid) +AC_CHECK_FUNCS(open lseek close) +AC_HEADER_DIRENT + +# Check for dlopen support and enable plugins if possible. +enable_plugins=yes +AC_CHECK_HEADER([dlfcn.h],[],[enable_plugins=no],[AC_INCLUDES_DEFAULT]) +AC_SEARCH_LIBS([dlopen],[dl],[],[enable_plugins=no],[]) +AC_CHECK_FUNCS([dlopen dlsym dlclose],[],[enable_plugins=no]) +# We also support plugins on Windows (MinGW). +if test x$enable_plugins = xno ; then + AC_CHECK_HEADERS([windows.h],[enable_plugins=yes],[],[AC_INCLUDES_DEFAULT]) +fi +AM_CONDITIONAL([ENABLE_PLUGINS], [test x$enable_plugins = xyes]) + +AC_ARG_ENABLE(initfini-array, + [ --enable-initfini-array use .init_array/.fini_array sections], + [], [ +AC_CACHE_CHECK(for .preinit_array/.init_array/.fini_array support, + gcc_cv_initfini_array, [dnl + if test "x${build}" = "x${target}" ; then + AC_RUN_IFELSE([AC_LANG_SOURCE([ +static int x = -1; +int main (void) { return x; } +int foo (void) { x = 0; } +int (*fp) (void) __attribute__ ((section (".init_array"))) = foo;])], + [gcc_cv_initfini_array=yes], [gcc_cv_initfini_array=no], + [gcc_cv_initfini_array=no]) + else + gcc_cv_initfini_array=no + fi]) + enable_initfini_array=$gcc_cv_initfini_array +]) +AC_SUBST(enable_initfini_array) +if test $enable_initfini_array = yes; then + AC_DEFINE(HAVE_INITFINI_ARRAY, 1, + [Define .init_array/.fini_array sections are available and working.]) +fi + +AC_MSG_CHECKING(for a known getopt prototype in unistd.h) +AC_CACHE_VAL(ld_cv_decl_getopt_unistd_h, +[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <unistd.h>], [extern int getopt (int, char *const*, const char *);])], +ld_cv_decl_getopt_unistd_h=yes, ld_cv_decl_getopt_unistd_h=no)]) +AC_MSG_RESULT($ld_cv_decl_getopt_unistd_h) +if test $ld_cv_decl_getopt_unistd_h = yes; then + AC_DEFINE([HAVE_DECL_GETOPT], 1, + [Is the prototype for getopt in <unistd.h> in the expected format?]) +fi + +BFD_BINARY_FOPEN + +AC_CHECK_DECLS([strstr, free, sbrk, getenv, environ]) + +# Link in zlib if we can. This is needed only for the bootstrap tests +# right now, since those tests use libbfd, which depends on zlib. +AM_ZLIB + +# When converting linker scripts into strings for use in emulation +# files, use astring.sed if the compiler supports ANSI string +# concatenation, or ostring.sed otherwise. This is to support the +# broken Microsoft MSVC compiler, which limits the length of string +# constants, while still supporting pre-ANSI compilers which do not +# support string concatenation. +AC_MSG_CHECKING([whether ANSI C string concatenation works]) +AC_CACHE_VAL(ld_cv_string_concatenation, +[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [char *a = "a" "a";])], + ld_cv_string_concatenation=yes, + ld_cv_string_concatenation=no)]) +AC_MSG_RESULT($ld_cv_string_concatenation) +if test "$ld_cv_string_concatenation" = "yes"; then + STRINGIFY=astring.sed +else + STRINGIFY=ostring.sed +fi +AC_SUBST(STRINGIFY) + +# target-specific stuff: + +all_targets= +EMUL= +all_emuls= +all_emul_extras= +all_libpath= + +dnl We need to get an arbitrary number of tdir definitions into +dnl Makefile. We can't do it using AC_SUBST, because autoconf does +dnl not permit literal newlines in an AC_SUBST variables. So we use a +dnl file. +rm -f tdirs + +# If the host is 64-bit, then we enable 64-bit targets by default. +# This is consistent with what ../bfd/configure.in does. +if test x${want64} = xfalse; then + AC_CHECK_SIZEOF(void *) + if test "x${ac_cv_sizeof_void_p}" = "x8"; then + want64=true + fi +fi + +for targ_alias in `echo $target_alias $enable_targets | sed 's/,/ /g'` +do + if test "$targ_alias" = "all"; then + all_targets=true + else + # Canonicalize the secondary target names. + result=`$ac_config_sub $targ_alias 2>/dev/null` + if test -n "$result"; then + targ=$result + else + targ=$targ_alias + fi + + . ${srcdir}/configure.tgt + + if test "$targ" = "$target"; then + EMUL=$targ_emul + fi + + if test x${want64} = xfalse; then + . ${srcdir}/../bfd/config.bfd + fi + + if test x${want64} = xtrue; then + targ_extra_emuls="$targ_extra_emuls $targ64_extra_emuls" + targ_extra_libpath="$targ_extra_libpath $targ64_extra_libpath" + fi + + for i in $targ_emul $targ_extra_emuls $targ_extra_libpath; do + case " $all_emuls " in + *" e${i}.o "*) ;; + *) + all_emuls="$all_emuls e${i}.o" + eval result=\$tdir_$i + test -z "$result" && result=$targ_alias + echo tdir_$i=$result >> tdirs + ;; + esac + done + + for i in $targ_emul $targ_extra_libpath; do + case " $all_libpath " in + *" ${i} "*) ;; + *) + if test -z "$all_libpath"; then + all_libpath=${i} + else + all_libpath="$all_libpath ${i}" + fi + ;; + esac + done + + for i in $targ_extra_ofiles; do + case " $all_emul_extras " in + *" ${i} "*) ;; + *) + all_emul_extras="$all_emul_extras ${i}" + ;; + esac + done + + fi +done + +AC_SUBST(EMUL) + +TDIRS=tdirs +AC_SUBST_FILE(TDIRS) + +if test x${all_targets} = xtrue; then + if test x${want64} = xtrue; then + EMULATION_OFILES='$(ALL_EMULATIONS) $(ALL_64_EMULATIONS)' + EMUL_EXTRA_OFILES='$(ALL_EMUL_EXTRA_OFILES) $(ALL_64_EMUL_EXTRA_OFILES)' + else + EMULATION_OFILES='$(ALL_EMULATIONS)' + EMUL_EXTRA_OFILES='$(ALL_EMUL_EXTRA_OFILES)' + fi +else + EMULATION_OFILES=$all_emuls + EMUL_EXTRA_OFILES=$all_emul_extras +fi +AC_SUBST(EMULATION_OFILES) +AC_SUBST(EMUL_EXTRA_OFILES) +AC_SUBST(LIB_PATH) + +EMULATION_LIBPATH=$all_libpath +AC_SUBST(EMULATION_LIBPATH) + +if test x${enable_static} = xno; then + TESTBFDLIB="--rpath ../bfd/.libs ../bfd/.libs/libbfd.so" +else + TESTBFDLIB="../bfd/.libs/libbfd.a" +fi +AC_SUBST(TESTBFDLIB) + +target_vendor=${target_vendor=$host_vendor} +case "$target_vendor" in + hp) EXTRA_SHLIB_EXTENSION=".sl" ;; + *) EXTRA_SHLIB_EXTENSION= ;; +esac + +case "$target_os" in + lynxos) EXTRA_SHLIB_EXTENSION=".a" ;; +esac + +if test x${EXTRA_SHLIB_EXTENSION} != x ; then + AC_DEFINE_UNQUOTED(EXTRA_SHLIB_EXTENSION, "$EXTRA_SHLIB_EXTENSION", + [Additional extension a shared object might have.]) +fi + +dnl Required by html, pdf, install-pdf and install-html +AC_SUBST(datarootdir) +AC_SUBST(docdir) +AC_SUBST(htmldir) +AC_SUBST(pdfdir) + +AC_CONFIG_FILES(Makefile po/Makefile.in:po/Make-in) +AC_OUTPUT |