[libvirt] [PATCH v3 2/4] Fix pthread_sigmask check for mingw32 without winpthreads

On Fedora 19 and older the pthreads impl provided with mingw does not have any pthread_sigmask impl at all. The configure.ac check was not distinguishing this scenario from that of a broken pthread_sigmask impl, so was mistakenly enabling the libvirt workaround even when it was not needed. This in turn conflicted with the gnulib provided pthread_sigmask impl. Signed-off-by: Daniel P. Berrange <berrange(a)redhat.com&gt; --- configure.ac | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/configure.ac b/configure.ac index 3a70375..20d6202 100644 --- a/configure.ac +++ b/configure.ac @@ -285,8 +285,10 @@ AC_CACHE_CHECK([whether pthread_sigmask does anything], #include <sys/types.h> #include <signal.h> ]], [[ - int (*foo)(int, const sigset_t *, sigset_t *) = &pthread_sigmask; - return !foo; + #ifdef pthread_sigmask + int (*foo)(int, const sigset_t *, sigset_t *) = &pthread_sigmask; + return !foo; + #endif ]])], [lv_cv_pthread_sigmask_works=yes], [lv_cv_pthread_sigmask_works=no])]) if test "x$lv_cv_pthread_sigmask_works" != xyes; then AC_DEFINE([FUNC_PTHREAD_SIGMASK_BROKEN], [1], -- 1.8.4.2