Backport LLVM's r341717 "Fix flags used to compile benchmark library with clang-cl" (#673)

`MSVC` is true for clang-cl, but `"${CMAKE_CXX_COMPILER_ID}" STREQUAL
"MSVC"` is false, so we would enable -Wall, which means -Weverything
with clang-cl, and we get tons of undesired warnings.

Use the simpler condition to fix things.

Patch by: Reid Kleckner @rnk
This commit is contained in:
Roman Lebedev 2018-09-10 23:30:40 +03:00 committed by Eric
parent f0901417c8
commit f274c503e1

View File

@ -94,7 +94,7 @@ if (BENCHMARK_BUILD_32_BITS)
add_required_cxx_compiler_flag(-m32)
endif()
if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC")
if (MSVC)
# Turn compiler warnings up to 11
string(REGEX REPLACE "[-/]W[1-4]" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /W4")