[PATCH] libc++: Add option to disable access to the global filesystem namespace

[Ed Schouten]

Hi Jonathan,

This is interesting. Today I spent quite some time getting lit to do what I want but it seems I'm running into the issue that lit completely ignores the `lit.local.cfg` files that I've created. The fstream tests are executed even if I build with `-DLIBCXX_ENABLE_GLOBAL_FILESYSTEM_NAMESPACE=OFF`. Conversely, the `fopen.fail.cpp` test is still executed even if the global filesystem namespace is available.

It looks like I'm the first person attempting to add a `lit.local.cfg` to libc++. Maybe we still need to flip a switch to have it enabled? I looked around, but I wasn't able to figure out what to do.

Ed


http://reviews.llvm.org/D8194

Files:
  CMakeLists.txt
  include/__config
  include/cstdio
  include/fstream
  test/CMakeLists.txt
  test/libcxx/test/config.py
  test/lit.site.cfg.in
  test/std/input.output/file.streams/c.files/cstdio.pass.cpp
  test/std/input.output/file.streams/c.files/no.global.filesystem.namespace/fopen.fail.cpp
  test/std/input.output/file.streams/c.files/no.global.filesystem.namespace/lit.local.cfg
  test/std/input.output/file.streams/fstreams/lit.local.cfg
  test/std/localization/locales/locale.convenience/conversions/conversions.buffer/lit.local.cfg
  test/support/platform_support.h

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