# =========================================================================== # http://www.gnu.org/software/autoconf-archive/ax_cc_for_build.html # =========================================================================== # # SYNOPSIS # # AX_CC_FOR_BUILD # # DESCRIPTION # # Find a build-time compiler. Sets CC_FOR_BUILD and EXEEXT_FOR_BUILD. # # LICENSE # # Copyright (c) 2010 Reuben Thomas # Copyright (c) 1999 Richard Henderson # # This program is free software: you can redistribute it and/or modify it # under the terms of the GNU General Public License as published by the # Free Software Foundation, either version 3 of the License, or (at your # option) any later version. # # This program is distributed in the hope that it will be useful, but # WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General # Public License for more details. # # You should have received a copy of the GNU General Public License along # with this program. If not, see . # # As a special exception, the respective Autoconf Macro's copyright owner # gives unlimited permission to copy, distribute and modify the configure # scripts that are the output of Autoconf when processing the Macro. You # need not follow the terms of the GNU General Public License when using # or distributing such scripts, even though portions of the text of the # Macro appear in them. The GNU General Public License (GPL) does govern # all other use of the material that constitutes the Autoconf Macro. # # This special exception to the GPL applies to versions of the Autoconf # Macro released by the Autoconf Archive. When you make and distribute a # modified version of the Autoconf Macro, you may extend this special # exception to the GPL to apply to your modified version as well. #serial 2 dnl Get a default for CC_FOR_BUILD to put into Makefile. AC_DEFUN([AX_CC_FOR_BUILD], [# Put a plausible default for CC_FOR_BUILD in Makefile. if test -z "$CC_FOR_BUILD"; then if test "x$cross_compiling" = "xno"; then CC_FOR_BUILD='$(CC)' else CC_FOR_BUILD=gcc fi fi AC_SUBST(CC_FOR_BUILD) # Also set EXEEXT_FOR_BUILD. if test "x$cross_compiling" = "xno"; then EXEEXT_FOR_BUILD='$(EXEEXT)' else AC_CACHE_CHECK([for build system executable suffix], bfd_cv_build_exeext, [rm -f conftest* echo 'int main () { return 0; }' > conftest.c bfd_cv_build_exeext= ${CC_FOR_BUILD} -o conftest conftest.c 1>&5 2>&5 for file in conftest.*; do case $file in *.c | *.o | *.obj | *.ilk | *.pdb) ;; *) bfd_cv_build_exeext=`echo $file | sed -e s/conftest//` ;; esac done rm -f conftest* test x"${bfd_cv_build_exeext}" = x && bfd_cv_build_exeext=no]) EXEEXT_FOR_BUILD="" test x"${bfd_cv_build_exeext}" != xno && EXEEXT_FOR_BUILD=${bfd_cv_build_exeext} fi AC_SUBST(EXEEXT_FOR_BUILD)])dnl