From f7b37455524ea32d85d800c54c74d9008b10b34c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Stefan=20B=C3=BChler?= <buehler@cert.uni-stuttgart.de>
Date: Sat, 30 Jul 2016 14:19:43 +0200
Subject: [PATCH] [cmake] always define _GNU_SOURCE

first.h only defines _GNU_SOURCE if no config.h is present.
---
 src/CMakeLists.txt | 1 -
 src/config.h.cmake | 4 ++++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 1456f547..a8587dad 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -687,7 +687,6 @@ if(CMAKE_COMPILER_IS_GNUCC)
 	set(CMAKE_C_FLAGS_RELWITHDEBINFO "${CMAKE_C_FLAGS_WITHDEBINFO} -O2")
 	set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${WARN_LDFLAGS}")
 	set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${WARN_LDFLAGS}")
-	add_definitions(-D_GNU_SOURCE)
 endif()
 
 if((NOT APPLE) OR CMAKE_COMPILER_IS_GNUCC)
diff --git a/src/config.h.cmake b/src/config.h.cmake
index 8b1f4636..bd3da228 100644
--- a/src/config.h.cmake
+++ b/src/config.h.cmake
@@ -8,6 +8,10 @@
 #define PACKAGE_VERSION "${PACKAGE_VERSION}"
 #define LIBRARY_DIR "${LIGHTTPD_LIBRARY_DIR}"
 
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE
+#endif
+
 /* System */
 #cmakedefine  HAVE_SYS_DEVPOLL_H
 #cmakedefine  HAVE_SYS_EPOLL_H