Don't dump llvm-config --cmakedir output if command fails.
This patch adjusts the out-of-tree CMake configuration so that
the stderr output is ignored when an old llvm-config is found
that doesn't support --cmakedir.
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@291991 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/cmake/Modules/HandleOutOfTreeLLVM.cmake b/cmake/Modules/HandleOutOfTreeLLVM.cmake
index 7fee839..34dbcb7 100644
--- a/cmake/Modules/HandleOutOfTreeLLVM.cmake
+++ b/cmake/Modules/HandleOutOfTreeLLVM.cmake
@@ -43,7 +43,8 @@
execute_process(
COMMAND ${LLVM_CONFIG_PATH} --cmakedir
RESULT_VARIABLE HAD_ERROR
- OUTPUT_VARIABLE CONFIG_OUTPUT)
+ OUTPUT_VARIABLE CONFIG_OUTPUT
+ ERROR_QUIET)
if(NOT HAD_ERROR)
string(STRIP "${CONFIG_OUTPUT}" LLVM_CMAKE_PATH)
else()
