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https://github.com/ClickHouse/ClickHouse.git
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6647333f5f
Since some build systems may change the compiler via those env variables. Signed-off-by: Azat Khuzhin <a.khuzhin@semrush.com>
95 lines
3.9 KiB
CMake
95 lines
3.9 KiB
CMake
# Use Ninja instead of Unix Makefiles by default.
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# https://stackoverflow.com/questions/11269833/cmake-selecting-a-generator-within-cmakelists-txt
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#
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# Reason: it has better startup time than make and it parallelizes jobs more uniformly.
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# (when comparing to make with Makefiles that was generated by CMake)
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#
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# How to install Ninja on Ubuntu:
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# sudo apt-get install ninja-build
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# CLion does not support Ninja
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# You can add your vote on CLion task tracker:
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# https://youtrack.jetbrains.com/issue/CPP-2659
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# https://youtrack.jetbrains.com/issue/CPP-870
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if (NOT DEFINED ENV{CLION_IDE} AND NOT DEFINED ENV{XCODE_IDE})
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find_program(NINJA_PATH ninja)
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if (NINJA_PATH)
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set(CMAKE_GENERATOR "Ninja" CACHE INTERNAL "")
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endif ()
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endif()
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# Check if environment is polluted.
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if (NOT $ENV{CFLAGS} STREQUAL ""
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OR NOT $ENV{CXXFLAGS} STREQUAL ""
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OR NOT $ENV{LDFLAGS} STREQUAL ""
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OR CMAKE_C_FLAGS OR CMAKE_CXX_FLAGS OR CMAKE_EXE_LINKER_FLAGS OR CMAKE_SHARED_LINKER_FLAGS OR CMAKE_MODULE_LINKER_FLAGS
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OR CMAKE_C_FLAGS_INIT OR CMAKE_CXX_FLAGS_INIT OR CMAKE_EXE_LINKER_FLAGS_INIT OR CMAKE_SHARED_LINKER_FLAGS_INIT OR CMAKE_MODULE_LINKER_FLAGS_INIT)
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# if $ENV
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message("CFLAGS: $ENV{CFLAGS}")
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message("CXXFLAGS: $ENV{CXXFLAGS}")
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message("LDFLAGS: $ENV{LDFLAGS}")
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# if *_FLAGS
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message("CMAKE_C_FLAGS: ${CMAKE_C_FLAGS}")
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message("CMAKE_CXX_FLAGS: ${CMAKE_CXX_FLAGS}")
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message("CMAKE_EXE_LINKER_FLAGS: ${CMAKE_EXE_LINKER_FLAGS}")
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message("CMAKE_SHARED_LINKER_FLAGS: ${CMAKE_SHARED_LINKER_FLAGS}")
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message("CMAKE_MODULE_LINKER_FLAGS: ${CMAKE_MODULE_LINKER_FLAGS}")
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# if *_FLAGS_INIT
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message("CMAKE_C_FLAGS_INIT: ${CMAKE_C_FLAGS_INIT}")
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message("CMAKE_CXX_FLAGS_INIT: ${CMAKE_CXX_FLAGS_INIT}")
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message("CMAKE_EXE_LINKER_FLAGS_INIT: ${CMAKE_EXE_LINKER_FLAGS_INIT}")
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message("CMAKE_SHARED_LINKER_FLAGS_INIT: ${CMAKE_SHARED_LINKER_FLAGS_INIT}")
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message("CMAKE_MODULE_LINKER_FLAGS_INIT: ${CMAKE_MODULE_LINKER_FLAGS_INIT}")
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message(FATAL_ERROR "
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Some of the variables like CFLAGS, CXXFLAGS, LDFLAGS are not empty.
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It is not possible to build ClickHouse with custom flags.
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These variables can be set up by previous invocation of some other build tools.
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You should cleanup these variables and start over again.
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Run the `env` command to check the details.
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You will also need to remove the contents of the build directory.
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Note: if you don't like this behavior, you can manually edit the cmake files, but please don't complain to developers.")
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endif()
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# Default toolchain - this is needed to avoid dependency on OS files.
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execute_process(COMMAND uname -s OUTPUT_VARIABLE OS)
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execute_process(COMMAND uname -m OUTPUT_VARIABLE ARCH)
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# By default, prefer clang on Linux
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# But note, that you still may change the compiler with -DCMAKE_C_COMPILER/-DCMAKE_CXX_COMPILER.
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if (OS MATCHES "Linux"
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# some build systems may use CC/CXX env variables
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AND "$ENV{CC}" STREQUAL ""
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AND "$ENV{CXX}" STREQUAL "")
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find_program(CLANG_PATH clang)
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if (CLANG_PATH)
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set(CMAKE_C_COMPILER "clang" CACHE INTERNAL "")
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endif()
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find_program(CLANG_CXX_PATH clang++)
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if (CLANG_CXX_PATH)
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set(CMAKE_CXX_COMPILER "clang++" CACHE INTERNAL "")
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endif()
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endif()
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if (OS MATCHES "Linux"
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AND NOT DEFINED CMAKE_TOOLCHAIN_FILE
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AND NOT DISABLE_HERMETIC_BUILD
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AND ($ENV{CC} MATCHES ".*clang.*" OR CMAKE_C_COMPILER MATCHES ".*clang.*"))
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if (ARCH MATCHES "amd64|x86_64")
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set (CMAKE_TOOLCHAIN_FILE "cmake/linux/toolchain-x86_64.cmake" CACHE INTERNAL "")
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elseif (ARCH MATCHES "^(aarch64.*|AARCH64.*|arm64.*|ARM64.*)")
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set (CMAKE_TOOLCHAIN_FILE "cmake/linux/toolchain-aarch64.cmake" CACHE INTERNAL "")
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elseif (ARCH MATCHES "^(ppc64le.*|PPC64LE.*)")
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set (CMAKE_TOOLCHAIN_FILE "cmake/linux/toolchain-ppc64le.cmake" CACHE INTERNAL "")
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else ()
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message (FATAL_ERROR "Unsupported architecture: ${ARCH}")
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endif ()
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endif()
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