You can download the Google test framework from https://github.com/google/googletest as source code. However, the best way to download it is via the Git clone from the terminal command line:

git clone https://github.com/google/googletest.git

Once the code is downloaded as shown in Figure 7.1, you'll be able to locate the Google test framework source code in the googletest folder:

The googletest folder has both the googletest and googlemock frameworks in separate folders. Now we can invoke the cmake utility to configure our build and autogenerate Makefile, as follows:   

cmake CMakeLists.txt

When the cmake utility is invoked, it detects the C/C++ header's files and its path that are necessary to build the Google test framework from the source code. Also, it will try to locate the tools required to build the source code. Once all the necessary headers and tools are located, it will autogenerate the Makefile. Once you have Makefile in place, you can use it to compile and install Google test and Google mock on your system:

sudo make install

The following screenshot demonstrates how you can install google test on your system:

In the preceding image, the make install command has compiled and installed libgmock.a and libgtest.a static library files in the /usr/local/lib folder. Since the /usr/local/lib folder path is generally in the system's PATH environment variable, it can be accessed from any project within the system.