| 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*]) |