| .. _module-pw_third_party_re2: |
| |
| === |
| RE2 |
| === |
| The ``$dir_pw_third_party/re2/`` module provides build files to allow |
| optionally including upstream RE2. |
| |
| .. _module-pw_third_party_re2-using_upstream: |
| |
| ------------------ |
| Using upstream RE2 |
| ------------------ |
| If you want to use RE2, you must do the following: |
| |
| Submodule |
| ========= |
| Add RE2 to your workspace with the following command. |
| |
| .. code-block:: sh |
| |
| git submodule add https://github.com/google/re2.git \ |
| third_party/re2/src |
| |
| GN |
| == |
| * Set the GN var ``dir_pw_third_party_re2`` to the location of the |
| RE2 source. |
| |
| If you used the command above, this will be |
| ``//third_party/re2/src`` |
| |
| This can be set in your args.gn or .gn file like: |
| ``dir_pw_third_party_re2 = "//third_party/re2/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/re2/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. |
| |
| .. code-block:: sh |
| |
| python pw_build/py/pw_build/generate_3p_gn.py \ |
| -w third_party/re2/src |
| |
| Version |
| ======= |
| The update script was last run for revision `c9cba76`_. |
| |
| .. _c9cba76: https://github.com/google/re2/tree/c9cba76063cf4235c1a15dd14a24a4ef8d623761 |