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- dnl Like AC_TRY_EVAL but also errors out if the compiler generates
- dnl _any_ output. Some compilers might issue warnings which we want
- dnl to catch.
- AC_DEFUN([AC_TRY_EVAL2],
- [{ (eval echo configure:__oline__: \"[$]$1\") 1>&AC_FD_CC; dnl
- (eval [$]$1) 2>&AC_FD_CC; _out=`eval [$]$1 2>&1` && test "x$_out" = x; }])
- dnl Like AC_TRY_COMPILE but calls AC_TRY_EVAL2 instead of AC_TRY_EVAL
- AC_DEFUN([AC_TRY_COMPILE2],
- [cat > conftest.$ac_ext <<EOF
- [#]line __oline__ "configure"
- #include "confdefs.h"
- [$1]
- int main(void) {
- [$2]
- ; return 0; }
- EOF
- if AC_TRY_EVAL2(ac_compile); then
- ifelse([$3], , :, [rm -rf conftest*
- $3])
- else
- echo "configure: failed program was:" >&AC_FD_CC
- cat conftest.$ac_ext >&AC_FD_CC
- ifelse([$4], , , [ rm -rf conftest*
- $4
- ])dnl
- fi
- rm -f conftest*])
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