C++11: Do CMake-less C++11 checking.

src/Unittests/CMakeLists.txt

@@ -22,16 +22,6 @@ if ( OPENMESH_BUILD_UNIT_TESTS )
     # set additional link directories
     link_directories(${GTEST_LIBRARY_DIR} )
 
-    set(INHIBIT_CXX11_SUPPORT OFF CACHE BOOL "Do not use C++11 even if it is available. (This is mainly useful for unit testing.)")
-
-    if (NOT INHIBIT_CXX11_SUPPORT)
-    find_package (CXX11)
-
-    if (CXX11_FOUND)
-      add_definitions(${CXX11_FLAGS} -DCPP11_ENABLED)
-    endif (CXX11_FOUND)
-    endif (NOT INHIBIT_CXX11_SUPPORT)
-
     if ( CMAKE_GENERATOR MATCHES "^Visual Studio 11.*" ) 
       add_definitions( /D _VARIADIC_MAX=10 )
     endif()

src/Unittests/unittests_vector_type.cc

@@ -83,7 +83,7 @@ TEST_F(OpenMeshVectorTest, VectorCasting) {
 
 }
 
-#ifdef CPP11_ENABLED
+#if __cplusplus > 199711L || defined(__GXX_EXPERIMENTAL_CXX0X__)
 TEST_F(OpenMeshVectorTest, cpp11_constructors) {
     OpenMesh::Vec3d vec1 { 1.2, 2.0, 3.0 };
 
@@ -113,6 +113,8 @@ TEST_F(OpenMeshVectorTest, cpp11_constructors) {
 }
 
 TEST_F(OpenMeshVectorTest, cpp11_htmlColorLiteral) {
+    static constexpr OpenMesh::Vec4f rose = 0xFFC7F1FF_htmlColor;
+
     const OpenMesh::Vec4f light_blue = 0x1FCFFFFF_htmlColor;
     EXPECT_LE((OpenMesh::Vec4f(0.1215686274f, 0.8117647058f, 1.0f, 1.0f)
         - light_blue).sqrnorm(), 1e-10);