gdb/gdbsupport/common.m4

   1 dnl Autoconf configure snippets for common.
   2 dnl Copyright (C) 1995-2019 Free Software Foundation, Inc.
   3 dnl
   4 dnl This file is part of GDB.
   5 dnl
   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.
  10 dnl
  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.
  15 dnl
  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/>.
  18
  19 dnl Invoke configury needed by the files in 'common'.
  20 AC_DEFUN([GDB_AC_COMMON], [
  21   AC_HEADER_STDC
  22   AC_FUNC_ALLOCA
  23
  24   dnl Note that this requires codeset.m4, which is included
  25   dnl by the users of common.m4.
  26   AM_LANGINFO_CODESET
  27
  28   AC_CHECK_HEADERS(linux/perf_event.h locale.h memory.h signal.h dnl
  29                    sys/resource.h sys/socket.h dnl
  30                    sys/un.h sys/wait.h dnl
  31                    thread_db.h wait.h dnl
  32                    termios.h dnl
  33                    dlfcn.h)
  34
  35   AC_CHECK_FUNCS([fdwalk getrlimit pipe pipe2 socketpair sigaction \
  36                   sigprocmask])
  37
  38   AC_CHECK_DECLS([strerror, strstr])
  39
  40   dnl Check if sigsetjmp is available.  Using AC_CHECK_FUNCS won't
  41   dnl do since sigsetjmp might only be defined as a macro.
  42 AC_CACHE_CHECK([for sigsetjmp], gdb_cv_func_sigsetjmp,
  43 [AC_TRY_COMPILE([
  44 #include <setjmp.h>
  45 ], [sigjmp_buf env; while (! sigsetjmp (env, 1)) siglongjmp (env, 1);],
  46 gdb_cv_func_sigsetjmp=yes, gdb_cv_func_sigsetjmp=no)])
  47 if test $gdb_cv_func_sigsetjmp = yes; then
  48   AC_DEFINE(HAVE_SIGSETJMP, 1, [Define if sigsetjmp is available. ])
  49 fi
  50 ])