Avoid redefining _GNU_SOURCE.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@32924 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/setup.h.in b/setup.h.in
index f6be1dddf3952338d55821ed4a2b31083f5e6ca8..50853facbee7c50a197033cf6bed2185748cc93e 100644 (file)
--- a/setup.h.in
+++ b/setup.h.in
@@ -46,7 +46,9 @@
 #undef STDC_HEADERS
 
 /* Define this to get extra features from GNU libc. */
+#ifndef _GNU_SOURCE
 #undef _GNU_SOURCE
+#endif
 
 /* Define to `int' if <sys/types.h> doesn't define.  */
 #undef uid_t