mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-13 19:14:30 +00:00
83 lines
3.6 KiB
CMake
83 lines
3.6 KiB
CMake
if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
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set (COMPILER_GCC 1)
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elseif (CMAKE_CXX_COMPILER_ID MATCHES "AppleClang")
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set (COMPILER_CLANG 1) # Safe to treat AppleClang as a regular Clang, in general.
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elseif (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
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set (COMPILER_CLANG 1)
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endif ()
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if (COMPILER_GCC)
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# Require minimum version of gcc
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set (GCC_MINIMUM_VERSION 9)
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if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS ${GCC_MINIMUM_VERSION} AND NOT CMAKE_VERSION VERSION_LESS 2.8.9)
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message (FATAL_ERROR "GCC version must be at least ${GCC_MINIMUM_VERSION}. For example, if GCC ${GCC_MINIMUM_VERSION} is available under gcc-${GCC_MINIMUM_VERSION}, g++-${GCC_MINIMUM_VERSION} names, do the following: export CC=gcc-${GCC_MINIMUM_VERSION} CXX=g++-${GCC_MINIMUM_VERSION}; rm -rf CMakeCache.txt CMakeFiles; and re run cmake or ./release.")
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endif ()
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elseif (COMPILER_CLANG)
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# Require minimum version of clang/apple-clang
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if (CMAKE_CXX_COMPILER_ID MATCHES "AppleClang")
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# AppleClang 10.0.1 (Xcode 10.2) corresponds to LLVM/Clang upstream version 7.0.0
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# AppleClang 11.0.0 (Xcode 11.0) corresponds to LLVM/Clang upstream version 8.0.0
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set (XCODE_MINIMUM_VERSION 10.2)
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set (APPLE_CLANG_MINIMUM_VERSION 10.0.1)
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if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS ${APPLE_CLANG_MINIMUM_VERSION})
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message (FATAL_ERROR "AppleClang compiler version must be at least ${APPLE_CLANG_MINIMUM_VERSION} (Xcode ${XCODE_MINIMUM_VERSION}).")
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elseif (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 11.0.0)
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# char8_t is available starting (upstream vanilla) Clang 7, but prior to Clang 8,
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# it is not enabled by -std=c++20 and can be enabled with an explicit -fchar8_t.
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set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fchar8_t")
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set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fchar8_t")
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endif ()
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else ()
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set (CLANG_MINIMUM_VERSION 8)
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if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS ${CLANG_MINIMUM_VERSION})
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message (FATAL_ERROR "Clang version must be at least ${CLANG_MINIMUM_VERSION}.")
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endif ()
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endif ()
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else ()
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message (WARNING "You are using an unsupported compiler. Compilation has only been tested with Clang and GCC.")
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endif ()
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STRING(REGEX MATCHALL "[0-9]+" COMPILER_VERSION_LIST ${CMAKE_CXX_COMPILER_VERSION})
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LIST(GET COMPILER_VERSION_LIST 0 COMPILER_VERSION_MAJOR)
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option (LINKER_NAME "Linker name or full path")
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if (COMPILER_GCC)
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find_program (LLD_PATH NAMES "ld.lld")
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find_program (GOLD_PATH NAMES "ld.gold")
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else ()
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find_program (LLD_PATH NAMES "ld.lld-${COMPILER_VERSION_MAJOR}" "lld-${COMPILER_VERSION_MAJOR}" "ld.lld" "lld")
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find_program (GOLD_PATH NAMES "ld.gold" "gold")
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endif ()
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if (OS_LINUX)
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# We prefer LLD linker over Gold or BFD on Linux.
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if (NOT LINKER_NAME)
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if (LLD_PATH)
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if (COMPILER_GCC)
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# GCC driver requires one of supported linker names like "lld".
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set (LINKER_NAME "lld")
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else ()
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# Clang driver simply allows full linker path.
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set (LINKER_NAME ${LLD_PATH})
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endif ()
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endif ()
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endif ()
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if (NOT LINKER_NAME)
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if (GOLD_PATH)
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if (COMPILER_GCC)
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set (LINKER_NAME "gold")
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else ()
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set (LINKER_NAME ${GOLD_PATH})
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endif ()
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endif ()
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endif ()
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endif ()
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if (LINKER_NAME)
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set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fuse-ld=${LINKER_NAME}")
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set (CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -fuse-ld=${LINKER_NAME}")
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message(STATUS "Using custom linker by name: ${LINKER_NAME}")
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endif ()
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