1 dnl Autoconf configure snippets for common.
2 dnl Copyright (C) 1995-2020 Free Software Foundation, Inc.
4 dnl This file is part of GDB.
6 dnl This program is free software; you can redistribute it and/or modify
7 dnl it under the terms of the GNU General Public License as published by
8 dnl the Free Software Foundation; either version 3 of the License, or
9 dnl (at your option) any later version.
11 dnl This program is distributed in the hope that it will be useful,
12 dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
13 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 dnl GNU General Public License for more details.
16 dnl You should have received a copy of the GNU General Public License
17 dnl along with this program. If not, see <http://www.gnu.org/licenses/>.
19 dnl Invoke configury needed by the files in 'common'.
20 AC_DEFUN([GDB_AC_COMMON], [
27 AC_DEFINE(USE_WIN32API, 1,
28 [Define if we should use the Windows API, instead of the
29 POSIX API. On Windows, we use the Windows API when
30 building for MinGW, but the POSIX API when building
32 WIN32APILIBS="-lws2_32"
36 dnl Note that this requires codeset.m4, which is included
37 dnl by the users of common.m4.
40 AC_CHECK_HEADERS(linux/perf_event.h locale.h memory.h signal.h dnl
41 sys/resource.h sys/socket.h dnl
42 sys/un.h sys/wait.h dnl
43 thread_db.h wait.h dnl
47 AC_CHECK_FUNCS([fdwalk getrlimit pipe pipe2 socketpair sigaction \
50 AC_CHECK_DECLS([strstr])
52 # Check for std::thread. This does not work on some platforms, like
55 AX_PTHREAD([threads=yes], [threads=no])
56 if test "$threads" = "yes"; then
58 LIBS="$PTHREAD_LIBS $LIBS"
59 save_CXXFLAGS="$CXXFLAGS"
60 CXXFLAGS="$PTHREAD_CFLAGS $save_CXXFLAGS"
61 AC_CACHE_CHECK([for std::thread],
62 gdb_cv_cxx_std_thread,
63 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
65 void callback() { }]],
66 [[std::thread t(callback);]])],
67 gdb_cv_cxx_std_thread=yes,
68 gdb_cv_cxx_std_thread=no)])
70 # This check must be here, while LIBS includes any necessary
72 AC_CHECK_FUNCS([pthread_sigmask pthread_setname_np])
75 CXXFLAGS="$save_CXXFLAGS"
77 if test "$gdb_cv_cxx_std_thread" = "yes"; then
78 AC_DEFINE(CXX_STD_THREAD, 1,
79 [Define to 1 if std::thread works.])
83 dnl Check if sigsetjmp is available. Using AC_CHECK_FUNCS won't
84 dnl do since sigsetjmp might only be defined as a macro.
85 AC_CACHE_CHECK([for sigsetjmp], gdb_cv_func_sigsetjmp,
88 ], [sigjmp_buf env; while (! sigsetjmp (env, 1)) siglongjmp (env, 1);],
89 gdb_cv_func_sigsetjmp=yes, gdb_cv_func_sigsetjmp=no)])
90 if test "$gdb_cv_func_sigsetjmp" = "yes"; then
91 AC_DEFINE(HAVE_SIGSETJMP, 1, [Define if sigsetjmp is available. ])