Explicitly specify -Wno-error if LIBCXX_ENABLE_WERROR is false. libcxx doesn't build with -Werror because of #warnings in its source code. But when libcxx is built as an external LLVM project, it inherits LLVM build flags, breaking the build if LLVM_ENABLE_WERROR is enabled. git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@191814 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/CMakeLists.txt b/CMakeLists.txt index b8f9a03..d5352fa 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt
@@ -189,6 +189,9 @@ if (LIBCXX_ENABLE_WERROR) append_if(LIBCXX_CXX_WARNING_FLAGS LIBCXX_HAS_WERROR_FLAG -Werror) append_if(LIBCXX_CXX_WARNING_FLAGS LIBCXX_HAS_WX_FLAG -WX) +else() + append_if(LIBCXX_CXX_WARNING_FLAGS LIBCXX_HAS_WNO_ERROR_FLAG -Wno-error) + append_if(LIBCXX_CXX_WARNING_FLAGS LIBCXX_HAS_NO_WX_FLAG -WX-) endif() if (LIBCXX_ENABLE_PEDANTIC) append_if(LIBCXX_CXX_WARNING_FLAGS LIBCXX_HAS_PEDANTIC_FLAG -pedantic)
