http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56475
Paolo Carlini <paolo.carlini at oracle dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |ktietz at gcc dot gnu.org --- Comment #1 from Paolo Carlini <paolo.carlini at oracle dot com> 2013-02-27 19:12:56 UTC --- We had an AC_TRY_RUN test, but such kind of test give a lot of problems and we removed it. We had: AC_TRY_RUN([#include <stdio.h> int main() { return !(fopen("/dev/random", "r") && fopen("/dev/urandom", "r")); } ], [ac_random_tr1=yes], [ac_random_tr1=no], [ac_random_tr1=no]) ]) Kai, can you suggest something working on MinGW and not using an AC_TRY_RUN? Or you can just special case MinGW. I have no way of testing such fixes, sorry.