ClickHouse/cmake/find_llvm.cmake
Георгий Кондратьев afbcdf2f00 Link to libLLVM rather than to individual LLVM libs when USE_STATIC_LIBRARIES is off
The clickhouse program links to LLVM and to the clickhouse library, that also
links to LLVM. When the library is shared but LLVM is static, LLVM gets linked
into the program twice (once via the library and once directly), which causes
this error when running clickhouse:

     : CommandLine Error: Option 'x86-use-base-pointer' registered more than once!
     LLVM ERROR: inconsistency in registered CommandLine options

A common LLVM installation provides static component libraries and a shared
libLLVM. Linking to libLLVM when libclickhouse is shared solves this issue.
2019-01-06 03:52:50 +00:00

93 lines
4.1 KiB
CMake

# Broken in macos. TODO: update clang, re-test, enable
if (NOT APPLE)
option (ENABLE_EMBEDDED_COMPILER "Set to TRUE to enable support for 'compile' option for query execution" 1)
option (USE_INTERNAL_LLVM_LIBRARY "Use bundled or system LLVM library. Default: system library for quicker developer builds." ${APPLE})
endif ()
if (ENABLE_EMBEDDED_COMPILER)
if (USE_INTERNAL_LLVM_LIBRARY AND NOT EXISTS "${ClickHouse_SOURCE_DIR}/contrib/llvm/llvm/CMakeLists.txt")
message (WARNING "submodule contrib/llvm is missing. to fix try run: \n git submodule update --init --recursive")
set (USE_INTERNAL_LLVM_LIBRARY 0)
endif ()
if (NOT USE_INTERNAL_LLVM_LIBRARY)
set (LLVM_PATHS "/usr/local/lib/llvm")
if (LLVM_VERSION)
find_package(LLVM ${LLVM_VERSION} CONFIG PATHS ${LLVM_PATHS})
elseif (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
find_package(LLVM ${CMAKE_CXX_COMPILER_VERSION} CONFIG PATHS ${LLVM_PATHS})
else ()
find_package (LLVM 7 CONFIG PATHS ${LLVM_PATHS})
if (NOT LLVM_FOUND)
find_package (LLVM 6 CONFIG PATHS ${LLVM_PATHS})
endif ()
if (NOT LLVM_FOUND)
find_package (LLVM 5 CONFIG PATHS ${LLVM_PATHS})
endif ()
endif ()
if (LLVM_FOUND)
find_library (LLD_LIBRARY_TEST lldCore PATHS ${LLVM_LIBRARY_DIRS})
find_path (LLD_INCLUDE_DIR_TEST NAMES lld/Core/AbsoluteAtom.h PATHS ${LLVM_INCLUDE_DIRS})
if (NOT LLD_LIBRARY_TEST OR NOT LLD_INCLUDE_DIR_TEST)
set (LLVM_FOUND 0)
message(WARNING "liblld (${LLD_LIBRARY_TEST}, ${LLD_INCLUDE_DIR_TEST}) not found in ${LLVM_INCLUDE_DIRS} ${LLVM_LIBRARY_DIRS}. Disabling internal compiler.")
endif ()
endif ()
if (LLVM_FOUND)
# Remove dynamically-linked zlib and libedit from LLVM's dependencies:
set_target_properties(LLVMSupport PROPERTIES INTERFACE_LINK_LIBRARIES "-lpthread;LLVMDemangle;${ZLIB_LIBRARIES}")
set_target_properties(LLVMLineEditor PROPERTIES INTERFACE_LINK_LIBRARIES "LLVMSupport")
option(LLVM_HAS_RTTI "Enable if LLVM was build with RTTI enabled" ON)
set (USE_EMBEDDED_COMPILER 1)
else()
set (USE_EMBEDDED_COMPILER 0)
endif()
if (LLVM_FOUND AND OS_LINUX AND USE_LIBCXX)
message(WARNING "Option USE_INTERNAL_LLVM_LIBRARY is not set but the LLVM library from OS packages in Linux is incompatible with libc++ ABI. LLVM Will be disabled.")
set (LLVM_FOUND 0)
set (USE_EMBEDDED_COMPILER 0)
endif ()
else()
set (LLVM_FOUND 1)
set (USE_EMBEDDED_COMPILER 1)
set (LLVM_VERSION "7.0.0bundled")
set (LLVM_INCLUDE_DIRS
${ClickHouse_SOURCE_DIR}/contrib/llvm/llvm/include
${ClickHouse_BINARY_DIR}/contrib/llvm/llvm/include
${ClickHouse_SOURCE_DIR}/contrib/llvm/clang/include
${ClickHouse_BINARY_DIR}/contrib/llvm/clang/include
${ClickHouse_BINARY_DIR}/contrib/llvm/llvm/tools/clang/include
${ClickHouse_SOURCE_DIR}/contrib/llvm/lld/include
${ClickHouse_BINARY_DIR}/contrib/llvm/lld/include
${ClickHouse_BINARY_DIR}/contrib/llvm/llvm/tools/lld/include)
set (LLVM_LIBRARY_DIRS ${ClickHouse_BINARY_DIR}/contrib/llvm/llvm)
endif()
if (LLVM_FOUND)
message(STATUS "LLVM version: ${LLVM_PACKAGE_VERSION}")
message(STATUS "LLVM include Directory: ${LLVM_INCLUDE_DIRS}")
message(STATUS "LLVM library Directory: ${LLVM_LIBRARY_DIRS}")
message(STATUS "LLVM C++ compiler flags: ${LLVM_CXXFLAGS}")
endif()
endif()
function(llvm_libs_all REQUIRED_LLVM_LIBRARIES)
llvm_map_components_to_libnames (result all)
if (USE_STATIC_LIBRARIES OR NOT "LLVM" IN_LIST result)
list (REMOVE_ITEM result "LTO" "LLVM")
else()
set (result "LLVM")
endif ()
if (TERMCAP_LIBRARY)
list (APPEND result ${TERMCAP_LIBRARY})
endif ()
list (APPEND result ${CMAKE_DL_LIBS} ${ZLIB_LIBRARIES})
set (${REQUIRED_LLVM_LIBRARIES} ${result} PARENT_SCOPE)
endfunction()