1 # ===========================================================================
2 # http://www.gnu.org/software/autoconf-archive/ax_cc_for_build.html
3 # ===========================================================================
11 # Find a build-time compiler. Sets CC_FOR_BUILD and EXEEXT_FOR_BUILD.
15 # Copyright (c) 2010 Reuben Thomas <rrt@sc3d.org>
16 # Copyright (c) 1999 Richard Henderson <rth@redhat.com>
18 # This program is free software: you can redistribute it and/or modify it
19 # under the terms of the GNU General Public License as published by the
20 # Free Software Foundation, either version 3 of the License, or (at your
21 # option) any later version.
23 # This program is distributed in the hope that it will be useful, but
24 # WITHOUT ANY WARRANTY; without even the implied warranty of
25 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
26 # Public License for more details.
28 # You should have received a copy of the GNU General Public License along
29 # with this program. If not, see <http://www.gnu.org/licenses/>.
31 # As a special exception, the respective Autoconf Macro's copyright owner
32 # gives unlimited permission to copy, distribute and modify the configure
33 # scripts that are the output of Autoconf when processing the Macro. You
34 # need not follow the terms of the GNU General Public License when using
35 # or distributing such scripts, even though portions of the text of the
36 # Macro appear in them. The GNU General Public License (GPL) does govern
37 # all other use of the material that constitutes the Autoconf Macro.
39 # This special exception to the GPL applies to versions of the Autoconf
40 # Macro released by the Autoconf Archive. When you make and distribute a
41 # modified version of the Autoconf Macro, you may extend this special
42 # exception to the GPL to apply to your modified version as well.
46 dnl Get a default for CC_FOR_BUILD to put into Makefile.
47 AC_DEFUN([AX_CC_FOR_BUILD],
48 [# Put a plausible default for CC_FOR_BUILD in Makefile.
49 if test -z "$CC_FOR_BUILD"; then
50 if test "x$cross_compiling" = "xno"; then
56 AC_SUBST(CC_FOR_BUILD)
57 # Also set EXEEXT_FOR_BUILD.
58 if test "x$cross_compiling" = "xno"; then
59 EXEEXT_FOR_BUILD='$(EXEEXT)'
61 AC_CACHE_CHECK([for build system executable suffix], bfd_cv_build_exeext,
63 echo 'int main () { return 0; }' > conftest.c
65 ${CC_FOR_BUILD} -o conftest conftest.c 1>&5 2>&5
66 for file in conftest.*; do
68 *.c | *.o | *.obj | *.ilk | *.pdb) ;;
69 *) bfd_cv_build_exeext=`echo $file | sed -e s/conftest//` ;;
73 test x"${bfd_cv_build_exeext}" = x && bfd_cv_build_exeext=no])
75 test x"${bfd_cv_build_exeext}" != xno && EXEEXT_FOR_BUILD=${bfd_cv_build_exeext}
77 AC_SUBST(EXEEXT_FOR_BUILD)])dnl