[PATCH] Fix build of kconfig on Darwin

[Bernhard Walle]

Of course busybox cannot be used on Darwin (Mac OS X), but it can be
cross-compiled for Linux there. Cross-compilation still requires kconfig
to be built as native host tool.

Commit b83c9704128dd106071184e4b00335a3b8486857 broke compilation on
Darwin. This patch fixes the problem, without hopefully breaking
compilation on other systems.

Signed-off-by: Bernhard Walle <bernhard at bwalle.de>
---
 scripts/kconfig/mconf.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/scripts/kconfig/mconf.c b/scripts/kconfig/mconf.c
index d3f69f8..322fc89 100644
--- a/scripts/kconfig/mconf.c
+++ b/scripts/kconfig/mconf.c
@@ -9,6 +9,7 @@
  */
 
 #define _XOPEN_SOURCE 700
+#define _DARWIN_C_SOURCE /* for SIGWINCH */
 
 #include <sys/ioctl.h>
 #include <sys/wait.h>
-- 
1.7.10.4