tree 7a7367998636c0bce0a7299d2fe292f49b10a16a
parent daee1e7d34704d5f9966f221a1ae060b7438329b
author Steven Perron <stevenperron@google.com> 1687472153 -0700
committer GitHub <noreply@github.com> 1687472153 -0400
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Have effcee add abseil subdirectory (#5281)

We currently add the abseil in the external/CMakeLists.txt. However, it
is not needed by spirv-tools directly. Instead we set effcee's variable
with the abseil source directory, and let effcee add it.

This will mean that abseil will be checked out only if effcee is
used. We currently get a few reports from people that use to only checkout
spirv-headers, and now get errors because abseil is missing.