[libcxx] r343433 - Turn off warnings under clang-cl

[Eric Fiselier]

Author: ericwf
Date: Sun Sep 30 18:15:50 2018
New Revision: 343433

URL: http://llvm.org/viewvc/llvm-project?rev=343433&view=rev
Log:
Turn off warnings under clang-cl

Modified:
    libcxx/trunk/CMakeLists.txt

Modified: libcxx/trunk/CMakeLists.txt
URL: http://llvm.org/viewvc/llvm-project/libcxx/trunk/CMakeLists.txt?rev=343433&r1=343432&r2=343433&view=diff
==============================================================================
--- libcxx/trunk/CMakeLists.txt (original)
+++ libcxx/trunk/CMakeLists.txt Sun Sep 30 18:15:50 2018
@@ -124,6 +124,11 @@ if (NOT LIBCXX_ENABLE_SHARED AND NOT LIB
   message(FATAL_ERROR "libc++ must be built as either a shared or static library.")
 endif()
 
+if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" AND "${CMAKE_CXX_SIMULATE_ID}" STREQUAL "MSVC")
+  message(STATUS "Configuring for clang-cl")
+  set(LIBCXX_TARGETING_CLANG_CL ON)
+endif()
+
 # ABI Library options ---------------------------------------------------------
 set(LIBCXX_CXX_ABI "default" CACHE STRING
     "Specify C++ ABI library to use.")
@@ -548,6 +553,13 @@ if ("${CMAKE_CXX_COMPILER_ID}" MATCHES "
     add_compile_flags_if_supported(
         -Wno-user-defined-literals
         -Wno-covered-switch-default)
+    if (LIBCXX_TARGETING_CLANG_CL)
+      add_compile_flags_if_supported(
+        -Wno-c++98-compat
+        -Wno-c++11-compat
+        -Wno-undef
+      )
+    endif()
 elseif("${CMAKE_CXX_COMPILER_ID}" MATCHES "GNU")
     add_compile_flags_if_supported(
         -Wno-literal-suffix