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cmake/FindCXX11.cmake

@@ -0,0 +1,21 @@
+if(__FIND_CXX11_CMAKE__)
+    return()
+endif()
+set(__FIND_CXX11_CMAKE__ TRUE)
+
+include(CheckCXXCompilerFlag)
+enable_language(CXX)
+
+check_cxx_compiler_flag("-std=c++11" COMPILER_KNOWS_CXX11)
+if(COMPILER_KNOWS_CXX11)
+    add_compile_options(-std=c++11)
+
+    # Tested on Mac OS X 10.8.2 with XCode 4.6 Command Line Tools
+    # Clang requires this to find the correct c++11 headers
+    check_cxx_compiler_flag("-stdlib=libc++" COMPILER_KNOWS_STDLIB)
+    if(APPLE AND COMPILER_KNOWS_STDLIB)
+        add_compile_options(-stdlib=libc++)
+    endif()
+else()
+    message(FATAL_ERROR "Your C++ compiler does not support C++11.")
+endif()