use -D_GNU_SOURCE on UNIX

fogleman · Jan 9, 2014 · 086029f · 086029f
1 parent 5e49aa8
commit 086029f
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/deps/glfw/CMakeLists.txt b/deps/glfw/CMakeLists.txt
@@ -84,7 +84,7 @@ endif()
 # Set compiler specific flags
 #--------------------------------------------------------------------
 if (UNIX)
-    add_definitions(-Wall)
+    add_definitions(-Wall -D_GNU_SOURCE)
 
     if (BUILD_SHARED_LIBS)
         add_definitions(-fvisibility=hidden)