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dnl Autoconf configure snippets for common.
dnl Copyright (C) 1995-2020 Free Software Foundation, Inc.
dnl
dnl This file is part of GDB.
dnl
dnl This program 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. If not, see <http://www.gnu.org/licenses/>.
dnl Invoke configury needed by the files in 'common'.
AC_DEFUN([GDB_AC_COMMON], [
AC_HEADER_STDC
AC_FUNC_ALLOCA
WIN32APILIBS=
case ${host} in
*mingw32*)
AC_DEFINE(USE_WIN32API, 1,
[Define if we should use the Windows API, instead of the
POSIX API. On Windows, we use the Windows API when
building for MinGW, but the POSIX API when building
for Cygwin.])
WIN32APILIBS="-lws2_32"
;;
esac
dnl Note that this requires codeset.m4, which is included
dnl by the users of common.m4.
AM_LANGINFO_CODESET
AC_CHECK_HEADERS(linux/perf_event.h locale.h memory.h signal.h dnl
sys/resource.h sys/socket.h dnl
sys/un.h sys/wait.h dnl
thread_db.h wait.h dnl
termios.h dnl
dlfcn.h dnl
linux/elf.h sys/procfs.h proc_service.h)
AC_FUNC_MMAP
AC_FUNC_VFORK
AC_CHECK_FUNCS([fdwalk getrlimit pipe pipe2 socketpair sigaction \
ptrace64 sbrk setns sigaltstack sigprocmask \
setpgid setpgrp getrusage getauxval])
dnl Check if we can disable the virtual address space randomization.
dnl The functionality of setarch -R.
AC_CHECK_DECLS([ADDR_NO_RANDOMIZE],,, [#include <sys/personality.h>])
define([PERSONALITY_TEST], [AC_LANG_PROGRAM([#include <sys/personality.h>], [
# if !HAVE_DECL_ADDR_NO_RANDOMIZE
# define ADDR_NO_RANDOMIZE 0x0040000
# endif
/* Test the flag could be set and stays set. */
personality (personality (0xffffffff) | ADDR_NO_RANDOMIZE);
if (!(personality (personality (0xffffffff)) & ADDR_NO_RANDOMIZE))
return 1])])
AC_RUN_IFELSE([PERSONALITY_TEST],
[have_personality=true],
[have_personality=false],
[AC_LINK_IFELSE([PERSONALITY_TEST],
[have_personality=true],
[have_personality=false])])
if $have_personality
then
AC_DEFINE([HAVE_PERSONALITY], 1,
[Define if you support the personality syscall.])
fi
AC_CHECK_DECLS([strstr])
# ----------------------- #
# Checks for structures. #
# ----------------------- #
AC_CHECK_MEMBERS([struct stat.st_blocks, struct stat.st_blksize])
AC_SEARCH_LIBS(kinfo_getfile, util util-freebsd,
[AC_DEFINE(HAVE_KINFO_GETFILE, 1,
[Define to 1 if your system has the kinfo_getfile function. ])])
# Check for std::thread. This does not work on some platforms, like
# mingw and DJGPP.
AC_LANG_PUSH([C++])
AX_PTHREAD([threads=yes], [threads=no])
if test "$threads" = "yes"; then
save_LIBS="$LIBS"
LIBS="$PTHREAD_LIBS $LIBS"
save_CXXFLAGS="$CXXFLAGS"
CXXFLAGS="$PTHREAD_CFLAGS $save_CXXFLAGS"
AC_CACHE_CHECK([for std::thread],
gdb_cv_cxx_std_thread,
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
[[#include <thread>
void callback() { }]],
[[std::thread t(callback);]])],
gdb_cv_cxx_std_thread=yes,
gdb_cv_cxx_std_thread=no)])
# This check must be here, while LIBS includes any necessary
# threading library.
AC_CHECK_FUNCS([pthread_sigmask pthread_setname_np])
LIBS="$save_LIBS"
CXXFLAGS="$save_CXXFLAGS"
fi
if test "$gdb_cv_cxx_std_thread" = "yes"; then
AC_DEFINE(CXX_STD_THREAD, 1,
[Define to 1 if std::thread works.])
fi
AC_LANG_POP
dnl Check if sigsetjmp is available. Using AC_CHECK_FUNCS won't
dnl do since sigsetjmp might only be defined as a macro.
AC_CACHE_CHECK([for sigsetjmp], gdb_cv_func_sigsetjmp,
[AC_TRY_COMPILE([
#include <setjmp.h>
], [sigjmp_buf env; while (! sigsetjmp (env, 1)) siglongjmp (env, 1);],
gdb_cv_func_sigsetjmp=yes, gdb_cv_func_sigsetjmp=no)])
if test "$gdb_cv_func_sigsetjmp" = "yes"; then
AC_DEFINE(HAVE_SIGSETJMP, 1, [Define if sigsetjmp is available. ])
fi
AC_ARG_WITH(intel_pt,
AS_HELP_STRING([--with-intel-pt], [include Intel Processor Trace support (auto/yes/no)]),
[], [with_intel_pt=auto])
AC_MSG_CHECKING([whether to use intel pt])
AC_MSG_RESULT([$with_intel_pt])
if test "${with_intel_pt}" = no; then
AC_MSG_WARN([Intel Processor Trace support disabled; some features may be unavailable.])
HAVE_LIBIPT=no
else
AC_PREPROC_IFELSE([AC_LANG_SOURCE([[
#include <linux/perf_event.h>
#ifndef PERF_ATTR_SIZE_VER5
# error
#endif
]])], [perf_event=yes], [perf_event=no])
if test "$perf_event" != yes; then
if test "$with_intel_pt" = yes; then
AC_MSG_ERROR([linux/perf_event.h missing or too old])
else
AC_MSG_WARN([linux/perf_event.h missing or too old; some features may be unavailable.])
fi
fi
AC_LIB_HAVE_LINKFLAGS([ipt], [], [#include "intel-pt.h"], [pt_insn_alloc_decoder (0);])
if test "$HAVE_LIBIPT" != yes; then
if test "$with_intel_pt" = yes; then
AC_MSG_ERROR([libipt is missing or unusable])
else
AC_MSG_WARN([libipt is missing or unusable; some features may be unavailable.])
fi
else
save_LIBS=$LIBS
LIBS="$LIBS $LIBIPT"
AC_CHECK_FUNCS(pt_insn_event)
AC_CHECK_MEMBERS([struct pt_insn.enabled, struct pt_insn.resynced], [], [],
[#include <intel-pt.h>])
LIBS=$save_LIBS
fi
fi
if test "$ac_cv_header_sys_procfs_h" = yes; then
BFD_HAVE_SYS_PROCFS_TYPE(gregset_t)
BFD_HAVE_SYS_PROCFS_TYPE(fpregset_t)
BFD_HAVE_SYS_PROCFS_TYPE(prgregset_t)
BFD_HAVE_SYS_PROCFS_TYPE(prfpregset_t)
BFD_HAVE_SYS_PROCFS_TYPE(prgregset32_t)
BFD_HAVE_SYS_PROCFS_TYPE(lwpid_t)
BFD_HAVE_SYS_PROCFS_TYPE(psaddr_t)
BFD_HAVE_SYS_PROCFS_TYPE(elf_fpregset_t)
fi
])
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