tree 1feefaf038b5434c5f39b2d1f29153fc19ea64b9
parent 149dbd965e1acc4d419fe205644e38357a76ef62
author Corentin Wallez <cwallez@chromium.org> 1715097537 +0000
committer Dawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com> 1715097537 +0000

CMake: Fix workaround for CMake < 3.20 generated files.

CMake < 3.20 needs a workaround to be happy with generated files being
put in INTERFACE of targeets. However the previous workaround relied on
making empty files and changing the access time of the generator script.

Filesystem timestamp precision may be as low as a second, causing both
the generated files and generator to have the same access time, leading
to build systems not realizing that files needed to be rebuilt.

Instead use a heavier-handed approach to run the source code generation
at build time if the files aren't present. If the files are already
present, then they are integrated in the build graph correctly and don't
need special handling.

Fixed: 339061162
Change-Id: Idef6034a5aadb73988d3e556a8ab482a71951d0c
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/187143
Reviewed-by: Austin Eng <enga@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>