CFLAGS="$CFLAGS -Werror"
fi
AC_COMPILE_IFELSE(
[AC_LANG_SOURCE(
[AC_LANG_PROGRAM(
[#include "confdefs.h"
[[$1]],
]
[[$1]]
[int main(int argc, const char *const *argv) {]
[[$2]]
[ return 0; }]
)], [CFLAGS=$apr_save_CFLAGS
$3], [CFLAGS=$apr_save_CFLAGS
$4])