ClickHouse/cmake/find_llvm.cmake

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option (USE_EMBEDDED_COMPILER "Set to TRUE to enable support for 'compile' option for query execution" FALSE)
if (USE_EMBEDDED_COMPILER)
# Based on source code of YT.
# Authors: Ivan Puzyrevskiy, Alexey Lukyanchikov, Ruslan Savchenko.
# Find LLVM includes and libraries.
#
# LLVM_VERSION - LLVM version.
# LLVM_INCLUDE_DIRS - Directory containing LLVM headers.
# LLVM_LIBRARY_DIRS - Directory containing LLVM libraries.
# LLVM_CXXFLAGS - C++ compiler flags for files that include LLVM headers.
# LLVM_FOUND - True if LLVM was found.
# llvm_map_components_to_libraries - Maps LLVM used components to required libraries.
# Usage: llvm_map_components_to_libraries(REQUIRED_LLVM_LIBRARIES core jit interpreter native ...)
if (CMAKE_SYSTEM MATCHES "FreeBSD")
set(LLVM_VERSION_POSTFIX "50" CACHE INTERNAL "")
else()
set(LLVM_VERSION_POSTFIX "-5.0" CACHE INTERNAL "")
endif()
find_program(LLVM_CONFIG_EXECUTABLE
NAMES llvm-config${LLVM_VERSION_POSTFIX} llvm-config llvm-config-devel
PATHS $ENV{LLVM_ROOT}/bin)
mark_as_advanced(LLVM_CONFIG_EXECUTABLE)
if(NOT LLVM_CONFIG_EXECUTABLE)
message(FATAL_ERROR "Cannot find LLVM (looking for `llvm-config`). Please, provide LLVM_ROOT environment variable.")
else()
set(LLVM_FOUND TRUE)
execute_process(
COMMAND ${LLVM_CONFIG_EXECUTABLE} --version
OUTPUT_VARIABLE LLVM_VERSION
OUTPUT_STRIP_TRAILING_WHITESPACE)
if(LLVM_VERSION VERSION_LESS "5")
message(FATAL_ERROR "LLVM 5+ is required. You have ${LLVM_VERSION} (${LLVM_CONFIG_EXECUTABLE})")
endif()
message(STATUS "LLVM config: ${LLVM_CONFIG_EXECUTABLE}; version: ${LLVM_VERSION}")
execute_process(
COMMAND ${LLVM_CONFIG_EXECUTABLE} --includedir
OUTPUT_VARIABLE LLVM_INCLUDE_DIRS
OUTPUT_STRIP_TRAILING_WHITESPACE)
execute_process(
COMMAND ${LLVM_CONFIG_EXECUTABLE} --libdir
OUTPUT_VARIABLE LLVM_LIBRARY_DIRS
OUTPUT_STRIP_TRAILING_WHITESPACE)
execute_process(
COMMAND ${LLVM_CONFIG_EXECUTABLE} --cxxflags
OUTPUT_VARIABLE LLVM_CXXFLAGS
OUTPUT_STRIP_TRAILING_WHITESPACE)
execute_process(
COMMAND ${LLVM_CONFIG_EXECUTABLE} --targets-built
OUTPUT_VARIABLE LLVM_TARGETS_BUILT
OUTPUT_STRIP_TRAILING_WHITESPACE)
string(REPLACE " " ";" LLVM_TARGETS_BUILT "${LLVM_TARGETS_BUILT}")
if (USE_STATIC_LIBRARIES)
set (LLVM_CONFIG_ADD "--link-static")
endif()
# Get the link libs we need.
function(llvm_map_components_to_libraries RESULT)
execute_process(
COMMAND ${LLVM_CONFIG_EXECUTABLE} ${LLVM_CONFIG_ADD} --libs ${ARGN}
OUTPUT_VARIABLE _tmp
OUTPUT_STRIP_TRAILING_WHITESPACE)
string(REPLACE " " ";" _libs_module "${_tmp}")
#message(STATUS "LLVM Libraries for '${ARGN}': ${_libs_module}")
execute_process(
COMMAND ${LLVM_CONFIG_EXECUTABLE} --system-libs ${ARGN}
OUTPUT_VARIABLE _libs_system
OUTPUT_STRIP_TRAILING_WHITESPACE)
string(REPLACE "\n" " " _libs_system "${_libs_system}")
string(REPLACE " " " " _libs_system "${_libs_system}")
string(REPLACE " " ";" _libs_system "${_libs_system}")
set(${RESULT} ${_libs_module} ${_libs_system} PARENT_SCOPE)
endfunction(llvm_map_components_to_libraries)
message(STATUS "LLVM Include Directory: ${LLVM_INCLUDE_DIRS}")
message(STATUS "LLVM Library Directory: ${LLVM_LIBRARY_DIRS}")
message(STATUS "LLVM C++ Compiler: ${LLVM_CXXFLAGS}")
endif()
endif()