| ## `meson.add_dist_script()` allowd in subprojects |
| |
| `meson.add_dist_script()` can now be invoked from a subproject, it was a hard |
| error in earlier versions. Subproject dist scripts will only be executed |
| when running `meson dist --include-subprojects`. `MESON_PROJECT_SOURCE_ROOT`, |
| `MESON_PROJECT_BUILD_ROOT` and `MESON_PROJECT_DIST_ROOT` environment variables |
| are set when dist scripts are run. They are identical to `MESON_SOURCE_ROOT`, |
| `MESON_BUILD_ROOT` and `MESON_DIST_ROOT` for main project scripts, but for |
| subproject scripts they have the path to the root of the subproject appended, |
| usually `subprojects/<subproject-name>`. |
| |
| Note that existing dist scripts likely need to be modified to use those new |
| environment variables instead of `MESON_DIST_ROOT` to work properly when used |
| from a subproject. |
