From 4444fde9d7dc8a4b060e97bac7235aba37de02dd Mon Sep 17 00:00:00 2001
From: Didier Raboud <odyx@debian.org>
Date: Thu, 10 Jan 2013 09:48:15 +0100
Subject: Use correct C++11/C++0x flags depending on the used compiler

See http://gcc.gnu.org/projects/cxx0x.html for details.
---
 CMakeLists.txt | 25 +++++++++++++++----------
 1 file changed, 15 insertions(+), 10 deletions(-)

(limited to 'CMakeLists.txt')

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 674c627..2e309d2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -46,29 +46,34 @@ if(NOT CMAKE_BUILD_TYPE)
     set(CMAKE_BUILD_TYPE debug)
 endif()
 
-# Global compile flags
-# These are specific to GCC/MinGW/clang; for other compilers, change as necessary
-# The flags are used throughout src/ subdir
-set(COLOBOT_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wold-style-cast -std=c++11")
-set(COLOBOT_CXX_FLAGS_RELEASE "-O2")
-set(COLOBOT_CXX_FLAGS_DEBUG "-g -O0")
-
 # Compiler detection
 if ("${CMAKE_CXX_COMPILER_ID}" MATCHES "GNU")
     execute_process(
         COMMAND ${CMAKE_CXX_COMPILER} -dumpversion OUTPUT_VARIABLE GCC_VERSION)
-    if (NOT (GCC_VERSION VERSION_GREATER 4.6 OR GCC_VERSION VERSION_EQUAL 4.6))
-        message(FATAL_ERROR "${PROJECT_NAME} requires GCC 4.6 or greater.")
-    else()
+    if (GCC_VERSION VERSION_GREATER 4.7 OR GCC_VERSION VERSION_EQUAL 4.7)
+        message(STATUS "Detected GCC version 4.7+")
+        set(CXX11_FLAGS "-std=c++11")
+    elseif (GCC_VERSION VERSION_GREATER 4.6 OR GCC_VERSION VERSION_EQUAL 4.6)
         message(STATUS "Detected GCC version 4.6+")
+        set(CXX11_FLAGS "-std=c++0x")
+    else()
+        message(FATAL_ERROR "${PROJECT_NAME} requires GCC 4.6 or greater.")
     endif()
 elseif("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
     message(STATUS "Detected Clang compiler")
+    set(CXX11_FLAGS "-std=c++11")
 else()
     message(FATAL_ERROR "Your C++ compiler doesn't seem to support C++11.\n"
                         "Supported compilers at this time are GCC 4.6+ and clang.")
 endif()
 
+# Global compile flags
+# These are specific to GCC/MinGW/clang; for other compilers, change as necessary
+# The flags are used throughout src/ subdir
+set(COLOBOT_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wold-style-cast ${CXX11_FLAGS}")
+set(COLOBOT_CXX_FLAGS_RELEASE "-O2")
+set(COLOBOT_CXX_FLAGS_DEBUG "-g -O0")
+
 # Asserts can be enabled/disabled regardless of build type
 option(ASSERTS "Enable assert()s" ON)
 
-- 
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