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Initial support for build with libc++ instead of libstdc++ (incomplete) [#CLICKHOUSE-3174].

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This commit is contained in:
Alexey Milovidov 2017-09-09 03:06:06 +03:00
parent b5c6bb6416
commit a0f6f406c8
1 changed files with 18 additions and 4 deletions
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16
CMakeLists.txt
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@ -103,6 +103,13 @@ 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.
endif ()
set (CMAKE_BUILD_COLOR_MAKEFILE ON)
set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${COMPILER_FLAGS} -std=gnu++1z ${PLATFORM_EXTRA_CXX_FLAG} -fno-omit-frame-pointer ${COMMON_WARNING_FLAGS} ${CXX_WARNING_FLAGS} ${GLIBC_COMPATIBILITY_COMPILE_FLAGS}")
#set (CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE}")
@ -115,11 +122,18 @@ set (CMAKE_C_FLAGS_RELWITHDEBINFO "${CMAKE_C_FLAGS_RELWITHDEBINFO} -O3")
set (CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -O0 -g3 -ggdb3 -fno-inline")
if (NOT APPLE AND NOT (CMAKE_CXX_COMPILER_ID STREQUAL "Clang" AND CMAKE_SYSTEM MATCHES "FreeBSD"))
set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -static-libgcc -static-libstdc++")
set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -static-libgcc")
if (NOT USE_LIBCXX)
set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -static-libstdc++")
endif ()
endif ()
if (NOT APPLE)
set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${GLIBC_COMPATIBILITY_LINK_FLAGS} ${CXX11_ABI_FLAGS}")
if (USE_LIBCXX AND (CMAKE_CXX_COMPILER_ID STREQUAL "Clang"))
set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -stdlib=libc++ -Wl,-Bstatic -lc++ -lc++abi -Wl,-Bdynamic")
endif ()
endif ()
include (cmake/test_compiler.cmake)