tree 8ff20345f229643601a04b6e9e1405d29327007d
parent 5896e7501bf3a0dccb12f146949195d461d4a71e
author Sunny Sachanandani <sunnyps@chromium.org> 1700065213 +0000
committer Dawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com> 1700065213 +0000

Fix webgpu_dawn_native_proc multiple paths build issue

Recent ninja versions complain if multiple rules generate the same
target within a single build. This happens when Dawn native is built in
Skia:

% autoninja -C out/Default dm
ninja: Entering directory `out/Default'
ninja: error: obj/third_party/externals/dawn/src/dawn/native/webgpu_dawn_static.ninja:12: multiple rules generate obj/BUILD_DIR/gen/third_party/externals/dawn/src/dawn/native/libwebgpu_dawn.webgpu_dawn_native_proc.o

This is because the webgpu_native_proc_gen output sources are included
in both the static and shared lib variants of webgpu_dawn:

% gn refs out/Default third_party/externals/dawn/src/dawn/native:webgpu_dawn_native_proc_gen
//third_party/externals/dawn/src/dawn/native:webgpu_dawn_shared
//third_party/externals/dawn/src/dawn/native:webgpu_dawn_static

webgpu_dawn is a dawn_component that directly includes target outputs
of webgpu_dawn_native_proc_gen in its sources. One way of fixing this is
to introduce an intermediate source_set that contains target outputs of
webgpu_dawn_native_proc_gen which is what this CL does.

Change-Id: I1e78ad5815ee8710053e30e7f9368c886d38278b
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/160641
Reviewed-by: Austin Eng <enga@chromium.org>
Commit-Queue: Sunny Sachanandani <sunnyps@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
Auto-Submit: Sunny Sachanandani <sunnyps@chromium.org>