| commit | feb75f165ce9ee408b9208f453153e6ef2cf9b73 | [log] [tgz] |
|---|---|---|
| author | Daniel Wagner-Hall <dwagnerhall@apple.com> | Wed Aug 30 16:48:56 2023 +0100 |
| committer | GitHub <noreply@github.com> | Wed Aug 30 08:48:56 2023 -0700 |
| tree | 7ed3543618d3eb24f03d2054ae5252e49900bf38 | |
| parent | b55575e127ba15529f8bc73d8419dbbe3d0801ed [diff] |
crate_universe: Allow platform-specific build script env vars (#2139)
My use-case here is needing to point at different paths for libclang.so
when using bindgen on different platforms.
This allows specifying build script env vars in annotations like:
```starlark
build_script_env = {
"BORING_BSSL_PATH": "$(execpath @//third_party/boringssl:gen_dir)",
"LIBCLANG_PATH": {
"x86_64-unknown-linux-gnu": "$(execpath @libclang_linux_x86_64//file:libclang.so)",
},
},
```
which will unconditionally set `$BORING_BSSL_PATH`, but will only set
`$LIBCLANG_PATH` on x86-64 Linux.
We could in theory support this kind of construct for all annotation
fields, but I've only added it where I happened to need it for now.
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