To run the tests suite, all you need is (add the cmake options if you need any
or if the default libs and include paths are not the default) :
+$ cmake -DBUILD_TEST=1 ..
+Or if you like to build in the source tree:
+Add "-DCMAKE_BUILD_TYPE=DEBUG" if you like to have a debug version.
If you like to run the tests against a installed GD library, set the following