tree 4c417e9f5aee8ceca6c3a8b65f32007de6013627
parent 2bee19cf4347e6267156bbb493ba8088f4242544
author Louis Dionne <ldionne@apple.com> 1603313541 -0400
committer Copybara-Service <copybara-worker@google.com> 1604019883 -0700

[libc++] Fix compiler-rt build by copying libc++ headers to <build>/include

This commit should really be named "Workaround external projects depending
on libc++ build system implementation details". It seems that the compiler-rt
build (and perhaps other projects) is relying on the fact that we copy libc++
and libc++abi headers to `<build-root>/include/c++/v1`. This was changed
by 5d796645, which moved the headers to `<build-root>/projects/libcxx/include/c++/v1`
and broke the compiler-rt build.

I'm committing this workaround to fix the compiler-rt build, but we should
remove reliance on implementation details like that. The correct way to
setup the compiler-rt build would be to "link" against the `cxx-headers`
target in CMake, or to run `install-cxx-headers` using an appropriate
installation prefix, and then manually add a `-I` path to that location.

GitOrigin-RevId: 69c2087283cf7b17ca75f69daebf4ffc158b754a