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[PATCH] define _GNU_SOURCE for sigset_t test

X-seq: zsh-workers 28989
From: Valentin Ochs <a@xxxxxx>
To: zsh-workers@xxxxxxx
Subject: [PATCH] define _GNU_SOURCE for sigset_t test
Date: Tue, 12 Apr 2011 13:51:21 +0200
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Hi,

the current configure script does not define _GNU_SOURCE when testing
for the presence of sigset_t. This breaks compatibility with musl
(http://www.etalabs.net/musl/). The attached patch fixes that.

Best regards,
Valentin

---
diff -upr zsh-4.3.11/configure.ac zsh/configure.ac
--- zsh-4.3.11/configure.ac     2010-09-23 11:42:05.000000000 +0200
+++ zsh/configure.ac    2011-04-12 13:13:30.942000061 +0200
@@ -983,7 +983,8 @@ dnl <sys/types.h> and <signal.h>.  Other
 dnl to be added.
 AC_CACHE_CHECK(for sigset_t, zsh_cv_type_sigset_t,
 [AC_TRY_COMPILE(
-[#include <sys/types.h>
+[#define _POSIX_C_SOURCE 200809L
+#include <sys/types.h>
 #include <signal.h>], [sigset_t tempsigset;],
   zsh_cv_type_sigset_t=yes, zsh_cv_type_sigset_t=no)])
 AH_TEMPLATE([sigset_t],

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