/abseil_gtest_cmake

Primary LanguageC++

Abseil CMake Quick Start

Make sure that CMake is installed on your system.

We prefer that Abseil is built directly from source within your project. The first step is navigate to the project and grab Abseil

 git clone <this repo>
 cd <this repo>/cmake-hello
 git clone https://github.com/abseil/abseil-cpp.git

Then use add_subdirectory(abseil-cpp) in your top-level CMakeLists.txt file to make Abseil targets available to your CMake targets. The CMakeLists.txt in this directory shows how this is done.

Abseil also relies on CMAKE_CXX_STANDARD to determine whether to backfill or alias certain C++17 types. This can be set either in the commandline or your top level CMakeLists.txt file. We have set it in the CMakeLists.txt file in this example.

Finally, you can build and run in the normal way.

mkdir build
cd build
cmake ..  # configure the project
cmake --build . --target main  # build the executable
./main some commandline args

To run absl tests, you need a slightly different set of commands

mkdir build
cd build
cmake ..  -DABSL_USE_GOOGLETEST_HEAD=ON -DABSL_RUN_TESTS=ON
cmake --build . --target all # full abseil build.  Use make -j for a parallel build
cd abseil-cpp
ctest -j 4 # full abseil test.