[libcxx] Make sure use_system_cxx_lib does not override cxx_runtime_root for DYLD_LIBRARY_PATH
Otherwise, even specifying a runtime root different from the library
we're linking against won't work -- the library we're linking against
is always used. This is undesirable if we try testing something like
linking against a recent libc++.dylib but running the tests against an
older version (the back-deployment use case).
llvm-svn: 349171
Cr-Mirrored-From: sso://chromium.googlesource.com/_direct/external/github.com/llvm/llvm-project
Cr-Mirrored-Commit: bc297b1da9d63bd2ee64dd0f57cb41e66c2a50a9
diff --git a/docs/TestingLibcxx.rst b/docs/TestingLibcxx.rst
index 48b7271..ebbbf62 100644
--- a/docs/TestingLibcxx.rst
+++ b/docs/TestingLibcxx.rst
@@ -138,8 +138,7 @@
Specify the directory of the libc++ library to use at runtime. This directory
is not added to the linkers search path. This can be used to compile tests
against one version of libc++ and run them using another. The default value
- for this option is `cxx_library_root`. This option cannot be used
- when use_system_cxx_lib is provided.
+ for this option is `cxx_library_root`.
.. option:: use_system_cxx_lib=<bool>