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Using libc++ as default standard library when using clang [#CLICKHOUSE-2].

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Alexey Milovidov 2017-11-20 08:07:39 +03:00
parent 4565e30339
commit 087a379b7c
1 changed files with 7 additions and 5 deletions
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12
CMakeLists.txt
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@ -123,11 +123,13 @@ if (ARCHNATIVE)
set (COMPILER_FLAGS "${COMPILER_FLAGS} -march=native")
endif ()
option (USE_LIBCXX "Use libc++ and libc++abi instead of libstdc++ (only make sense on Linux with Clang)" OFF)
if (USE_LIBCXX)
set (COMPILER_FLAGS "${COMPILER_FLAGS} -pthread") # NOTE: Why this is not the default and why this is needed only with libc++?
set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++")
set (CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -D_LIBCPP_DEBUG=1") # More checks in debug build.
if (CMAKE_SYSTEM MATCHES "Linux" AND CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
option (USE_LIBCXX "Use libc++ and libc++abi instead of libstdc++ (only make sense on Linux with Clang)" ON)
if (USE_LIBCXX)
set (COMPILER_FLAGS "${COMPILER_FLAGS} -pthread") # NOTE: Why this is not the default and why this is needed only with libc++?
set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++")
set (CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -D_LIBCPP_DEBUG=1") # More checks in debug build.
endif ()
endif ()
# Special options for better optimized code with clang