[libcxx] Always convert 'use_system_cxx_lib' to an absolute path
authorLouis Dionne <ldionne@apple.com>
Thu, 6 Dec 2018 20:09:15 +0000 (20:09 +0000)
committerLouis Dionne <ldionne@apple.com>
Thu, 6 Dec 2018 20:09:15 +0000 (20:09 +0000)
commit73b98491457809f79c2bb4af0c49d07ecb349d87
treeb9c57f7105e252a8e6368a69b01102b09556470a
parentef4b600301e9b5c3cf07c0c5efa812fc08cf7131
[libcxx] Always convert 'use_system_cxx_lib' to an absolute path

Otherwise, some tests would fail when a relative path was passed,
because they'd use the relative path from a different directory
than the current working directory.

llvm-svn: 348525
libcxx/utils/libcxx/test/config.py