Fixes strict compilation with gcc-4.8 and CMake.

In gcc-4.8 there will be a new warning -Wunused-local-typedefs. This
warning is triggered by boost's static asserts, causing strict
compilation to fail when using this compiler.

Note the compiler is not officially released yet so used a recent
snapshot.

CMakeLists.txt

@@ -9,6 +9,8 @@
 # set minimum version
 cmake_minimum_required(VERSION 2.6.0)
 
+include(CheckCXXCompilerFlag)
+
 if(COMMAND cmake_policy)
 	cmake_policy(SET CMP0005 OLD)
 endif(COMMAND cmake_policy)
@@ -122,6 +124,13 @@ if(CMAKE_COMPILER_IS_GNUCXX)
 		if(ENABLE_STRICT_COMPILATION)
 			# The current unit test code breaks strict aliasing with g++ 4.4.
 			set(STRICT_FLAGS "-Werror -Wno-strict-aliasing")
+
+			# This flag is/will be added in gcc-4.8 and fails with BOOST_STATIC_ASSERT
+			check_cxx_compiler_flag("-Wunused-local-typedefs" HAS_COMPILER_FLAG_WUNUSED_LOCAL_TYPEDEFS)
+			if(HAS_COMPILER_FLAG_WUNUSED_LOCAL_TYPEDEFS)
+				set(STRICT_FLAGS "${STRICT_FLAGS} -Wno-unused-local-typedefs")
+			endif(HAS_COMPILER_FLAG_WUNUSED_LOCAL_TYPEDEFS)
+
 		else(ENABLE_STRICT_COMPILATION)
 			set(STRICT_FLAGS "")
 		endif(ENABLE_STRICT_COMPILATION)

changelog

@@ -310,6 +310,7 @@ Version 1.11.0-svn:
    * Added: UNREACHABLE_CODE macro.
    * Added: TELEPORT animation macros usable by any units
    * Added: CMake option ENABLE_SHARED_LIBRARIES.
+   * Fixed: Allow strict compilation with CMake using the upcoming gcc-4.8.
 
 Version 1.10.0:
  * Campaigns: