gecko-dev/gfx/harfbuzz/README-mozilla

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This directory contains the HarfBuzz source from the upstream repo:
https://github.com/harfbuzz/harfbuzz
Current version: main [commit aee123fc83388b8f5acfb301d87bd92eccc5b843]
!!!Please Note!!!
Because LLVM added in D100581 support for -Wunused-but-set-parameter and -Wunused-but-set-variable
and clang doesn't cope well with `#pragma GCC diagnostic warning` vs gcc we had to patch this version up.
The same patch was upstream in #2995 so, starting with the next version, the current patch will no longer
be needed.
UPDATING:
Our in-tree copy of HarfBuzz does not depend on any generated files from the
upstream build system. Therefore, it should be sufficient to simply overwrite
the in-tree files one the updated ones from upstream to perform updates.
To simplify this, the in-tree copy can be updated by running
sh update.sh
from within the gfx/harfbuzz directory.
If the collection of source files changes, manual updates to moz.build may be
needed as we don't use the upstream makefiles.