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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@redhat.com>
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@ -285,8 +285,10 @@ AC_CACHE_CHECK([whether pthread_sigmask does anything],
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#include <sys/types.h>
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#include <signal.h>
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]], [[
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#ifdef pthread_sigmask
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int (*foo)(int, const sigset_t *, sigset_t *) = &pthread_sigmask;
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return !foo;
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#endif
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]])], [lv_cv_pthread_sigmask_works=yes], [lv_cv_pthread_sigmask_works=no])])
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if test "x$lv_cv_pthread_sigmask_works" != xyes; then
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AC_DEFINE([FUNC_PTHREAD_SIGMASK_BROKEN], [1],
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