Index: kde4libs/CMakeLists.txt
===================================================================
--- kde4libs.orig/CMakeLists.txt
+++ kde4libs/CMakeLists.txt
@@ -170,6 +170,10 @@ remove_definitions(-DQT3_SUPPORT_WARNING
 
 add_definitions(-DQT_USE_FAST_CONCATENATION -DQT_USE_FAST_OPERATOR_PLUS)
 
+if (CMAKE_SYSTEM_NAME MATCHES SunOS)
+    add_definitions(-D__EXTENSIONS__ -D_XOPEN_SOURCE=600)
+endif()
+
 ################# setup the include directories #################
 
 # for including config.h and for includes like <kparts/foo.h>