forked from OSchip/llvm-project
43 lines
1.5 KiB
Plaintext
43 lines
1.5 KiB
Plaintext
# Check for the extension used for executables on build platform.
|
|
# This is necessary for cross-compiling where the build platform
|
|
# may differ from the host platform.
|
|
AC_DEFUN([AC_BUILD_EXEEXT],
|
|
[
|
|
AC_MSG_CHECKING([for executable suffix on build platform])
|
|
AC_CACHE_VAL(ac_cv_build_exeext,
|
|
[if test "$CYGWIN" = yes || test "$MINGW32" = yes; then
|
|
ac_cv_build_exeext=.exe
|
|
else
|
|
ac_build_prefix=${build_alias}-
|
|
|
|
AC_CHECK_PROG(BUILD_CC, ${ac_build_prefix}gcc, ${ac_build_prefix}gcc)
|
|
if test -z "$BUILD_CC"; then
|
|
AC_CHECK_PROG(BUILD_CC, gcc, gcc)
|
|
if test -z "$BUILD_CC"; then
|
|
AC_CHECK_PROG(BUILD_CC, cc, cc, , , /usr/ucb/cc)
|
|
fi
|
|
fi
|
|
test -z "$BUILD_CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
|
|
ac_build_link='${BUILD_CC-cc} -o conftest $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&AS_MESSAGE_LOG_FD'
|
|
rm -f conftest*
|
|
echo 'int main () { return 0; }' > conftest.$ac_ext
|
|
ac_cv_build_exeext=
|
|
if AC_TRY_EVAL(ac_build_link); then
|
|
for file in conftest.*; do
|
|
case $file in
|
|
*.c | *.o | *.obj | *.dSYM) ;;
|
|
*) ac_cv_build_exeext=`echo $file | sed -e s/conftest//` ;;
|
|
esac
|
|
done
|
|
else
|
|
AC_MSG_ERROR([installation or configuration problem: compiler cannot create executables.])
|
|
fi
|
|
rm -f conftest*
|
|
test x"${ac_cv_build_exeext}" = x && ac_cv_build_exeext=blank
|
|
fi])
|
|
BUILD_EXEEXT=""
|
|
test x"${ac_cv_build_exeext}" != xblank && BUILD_EXEEXT=${ac_cv_build_exeext}
|
|
AC_MSG_RESULT(${ac_cv_build_exeext})
|
|
ac_build_exeext=$BUILD_EXEEXT
|
|
AC_SUBST(BUILD_EXEEXT)])
|