--- a/CMakeLists.txt	
+++ a/CMakeLists.txt	
@@ -239,7 +239,7 @@ check_type_size(clock_t CLOCK_T)
 # Get the GCC version - from KDE4 cmake files
 if(CMAKE_COMPILER_IS_GNUCXX)
   exec_program(${CMAKE_C_COMPILER} ARGS --version OUTPUT_VARIABLE _gcc_version_info)
-  string(REGEX MATCH "[34567]\\.[0-9]\\.[0-9]" _gcc_version "${_gcc_version_info}")
+  string(REGEX MATCH "[3456789]\\.[0-9]\\.[0-9]" _gcc_version "${_gcc_version_info}")
   # gcc on mac just reports: "gcc (GCC) 3.3 20030304 ..." without the
   # patch level, handle this here:
   if (NOT _gcc_version)