Added flag to make builds of tests optional via cmake flag

git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@541 fdac6126-5c0c-442c-9429-916003d36597

src/Unittests/CMakeLists.txt

@@ -5,10 +5,15 @@ include_directories (
   ${CMAKE_CURRENT_SOURCE_DIR}
 )
 
-# Search for gtest headers and libraries
-find_package(GoogleTest)
+if ( NOT DEFINED OPENMESH_BUILD_UNIT_TESTS)
+    set( OPENMESH_BUILD_UNIT_TESTS false CACHE BOOL "Enable or disable unit test builds in OpenMesh." )
+endif()
 
-if(GTEST_FOUND)
+if ( OPENMESH_BUILD_UNIT_TESTS )
+  # Search for gtest headers and libraries
+  find_package(GoogleTest)
+
+  if(GTEST_FOUND)
 
     enable_testing()
    
@@ -54,6 +59,7 @@ if(GTEST_FOUND)
 
     add_test(NAME AllTestsIn_OpenMesh_tests WORKING_DIRECTORY "${CMAKE_BINARY_DIR}/Unittests" COMMAND "${CMAKE_BINARY_DIR}/Unittests/unittests")
 
-else(GTEST_FOUND)
+  else(GTEST_FOUND)
       message("Google testing framework was not found!")
-endif(GTEST_FOUND)
+  endif(GTEST_FOUND)
+endif()