[llvm-bugs] [Bug 31036] libc++ has problems building with ccache

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=31036

Eric Fiselier <eric at efcs.ca> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #1 from Eric Fiselier <eric at efcs.ca> ---
 ccache provides a two-phase preprocess/compile mode which works with -verify
tests. It is enabled by default for ccache >= 3.3 but has to be manually
enabled before then using the env var `CCACHE_CPP2=1` or the config file option
`run_second_cpp = true`.

The libc++ -verify tests are fixed r287109 which simply adds `CCACHE_CPP2=1` to
the test environment.

@Renato can you confirm the fix works for you?

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