Fixed bug #915

GNU-isms should be avoided wherever possible for portability, please avoid the use of GNU-isms in your code, this may be problematic when using this library in projects which use non-GNU-compliant compilers.

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%404354

configure.in

@@ -79,7 +79,7 @@ case "$host" in
         BASE_LDFLAGS="-mno-cygwin"
         ;;
     *)
-        BASE_CFLAGS="-D_GNU_SOURCE=1"
+        BASE_CFLAGS=""
         BASE_LDFLAGS=""
         ;;
 esac