Abseil C++

The $dir_pw_third_party/abseil-cpp/ module provides build files to allow optionally including upstream Abseil C++.

Using upstream Abseil C++

If you want to use Abseil C++, you must do the following:

Submodule

Add Abseil C++ to your workspace with the following command.

git submodule add https://github.com/abseil/abseil-cpp.git \
  third_party/abseil-cpp/src

GN

• Set the GN var dir_pw_third_party_abseil-cpp to the location of the Abseil C++ source.

  If you used the command above, this will be //third_party/abseil-cpp/src

  This can be set in your args.gn or .gn file like: dir_pw_third_party_abseil_cpp = "//third_party/abseil-cpp/src"

Updating

The GN build files are generated from the third-party Bazel build files using $dir_pw_build/py/pw_build/generate_3p_gn.py.

The script uses data taken from $dir_pw_third_party/abseil-cpp/repo.json.

The script should be re-run whenever the submodule is updated or the JSON file is modified. Specify the location of the Bazel repository can be specified using the -w option, e.g.

python pw_build/py/pw_build/generate_3p_gn.py \
  -w third_party/abseil-cpp/src

Version

The update script was last run for revision 67f9650.