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ce0cdc9636
* Merging changes from cmake branch to master * Fixing includes for renamed header files * still need build rule * Adding warning for swig code for gcc8+ * Adding CMakeLists.txt for data products * Cmake merge #901 Making adjustments to get cmake working on the Mac (Mojave) * Cmake merge #901 Changing string append to list append
194 lines
8.2 KiB
CMake
194 lines
8.2 KiB
CMake
# - Find LLVM headers and libraries.
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# This module locates LLVM and adapts the llvm-config output for use with
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# CMake.
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#
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# A given list of COMPONENTS is passed to llvm-config.
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#
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# The following variables are defined:
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# LLVM_FOUND - true if LLVM was found
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# LLVM_CXXFLAGS - C++ compiler flags for files that include LLVM headers.
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# LLVM_HOST_TARGET - Target triple used to configure LLVM.
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# LLVM_INCLUDE_DIRS - Directory containing LLVM include files.
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# LLVM_LDFLAGS - Linker flags to add when linking against LLVM
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# (includes -LLLVM_LIBRARY_DIRS).
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# LLVM_LIBRARIES - Full paths to the library files to link against.
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# LLVM_LIBRARY_DIRS - Directory containing LLVM libraries.
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# LLVM_NATIVE_ARCH - Backend corresponding to LLVM_HOST_TARGET, e.g.,
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# X86 for x86_64 and i686 hosts.
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# LLVM_ROOT_DIR - The root directory of the LLVM installation.
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# llvm-config is searched for in ${LLVM_ROOT_DIR}/bin.
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# LLVM_VERSION_MAJOR - Major version of LLVM.
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# LLVM_VERSION_MINOR - Minor version of LLVM.
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# LLVM_VERSION_STRING - Full LLVM version string (e.g. 6.0.0svn).
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# LLVM_VERSION_BASE_STRING - Base LLVM version string without git/svn suffix (e.g. 6.0.0).
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#
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# Note: The variable names were chosen in conformance with the offical CMake
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# guidelines, see ${CMAKE_ROOT}/Modules/readme.txt.
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# Try suffixed versions to pick up the newest LLVM install available on Debian
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# derivatives.
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# We also want an user-specified LLVM_ROOT_DIR to take precedence over the
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# system default locations such as /usr/local/bin. Executing find_program()
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# multiples times is the approach recommended in the docs.
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set(llvm_config_names llvm-config-9.0 llvm-config90
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llvm-config-8.0 llvm-config80
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llvm-config-7.0 llvm-config70
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llvm-config-6.0 llvm-config60
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llvm-config-5.0 llvm-config50
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llvm-config-4.0 llvm-config40
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llvm-config-3.9 llvm-config39
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llvm-config)
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find_program(LLVM_CONFIG
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NAMES ${llvm_config_names}
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PATHS ${LLVM_ROOT_DIR}/bin /usr/local/opt/llvm/bin NO_DEFAULT_PATH
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DOC "Path to llvm-config tool.")
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find_program(LLVM_CONFIG NAMES ${llvm_config_names})
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# Prints a warning/failure message depending on the required/quiet flags. Copied
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# from FindPackageHandleStandardArgs.cmake because it doesn't seem to be exposed.
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macro(_LLVM_FAIL _msg)
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if(LLVM_FIND_REQUIRED)
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message(FATAL_ERROR "${_msg}")
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else()
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if(NOT LLVM_FIND_QUIETLY)
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message(STATUS "${_msg}")
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endif()
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endif()
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endmacro()
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if(NOT LLVM_CONFIG)
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if(NOT LLVM_FIND_QUIETLY)
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message(WARNING "Could not find llvm-config (LLVM >= ${LLVM_FIND_VERSION}). Try manually setting LLVM_CONFIG to the llvm-config executable of the installation to use.")
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endif()
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else()
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macro(llvm_set var flag)
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if(LLVM_FIND_QUIETLY)
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set(_quiet_arg ERROR_QUIET)
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endif()
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set(result_code)
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execute_process(
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COMMAND ${LLVM_CONFIG} --${flag}
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RESULT_VARIABLE result_code
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OUTPUT_VARIABLE LLVM_${var}
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OUTPUT_STRIP_TRAILING_WHITESPACE
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${_quiet_arg}
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)
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if(result_code)
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_LLVM_FAIL("Failed to execute llvm-config ('${LLVM_CONFIG}', result code: '${result_code})'")
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else()
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if(${ARGV2})
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file(TO_CMAKE_PATH "${LLVM_${var}}" LLVM_${var})
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endif()
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endif()
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endmacro()
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macro(llvm_set_libs var flag components)
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if(LLVM_FIND_QUIETLY)
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set(_quiet_arg ERROR_QUIET)
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endif()
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set(result_code)
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execute_process(
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COMMAND ${LLVM_CONFIG} --${flag} ${components}
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RESULT_VARIABLE result_code
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OUTPUT_VARIABLE tmplibs
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OUTPUT_STRIP_TRAILING_WHITESPACE
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${_quiet_arg}
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)
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if(result_code)
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_LLVM_FAIL("Failed to execute llvm-config ('${LLVM_CONFIG}', result code: '${result_code})'")
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else()
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file(TO_CMAKE_PATH "${tmplibs}" tmplibs)
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string(REGEX MATCHALL "${pattern}[^ ]+" LLVM_${var} ${tmplibs})
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endif()
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endmacro()
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llvm_set(VERSION_STRING version)
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llvm_set(CXXFLAGS cxxflags)
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llvm_set(HOST_TARGET host-target)
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llvm_set(INCLUDE_DIRS includedir true)
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llvm_set(ROOT_DIR prefix true)
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llvm_set(ENABLE_ASSERTIONS assertion-mode)
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# The LLVM version string _may_ contain a git/svn suffix, so match only the x.y.z part
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string(REGEX MATCH "^[0-9]+[.][0-9]+[.][0-9]+" LLVM_VERSION_BASE_STRING "${LLVM_VERSION_STRING}")
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# Versions below 4.0 do not support components debuginfomsf and demangle
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if(${LLVM_VERSION_STRING} MATCHES "^3\\..*")
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list(REMOVE_ITEM LLVM_FIND_COMPONENTS "debuginfomsf" index)
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list(REMOVE_ITEM LLVM_FIND_COMPONENTS "demangle" index)
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endif()
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# Versions below 6.0 do not support component windowsmanifest
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if(${LLVM_VERSION_STRING} MATCHES "^[3-5]\\..*")
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list(REMOVE_ITEM LLVM_FIND_COMPONENTS "windowsmanifest" index)
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endif()
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llvm_set(LDFLAGS ldflags)
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# In LLVM 3.5+, the system library dependencies (e.g. "-lz") are accessed
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# using the separate "--system-libs" flag.
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llvm_set(SYSTEM_LIBS system-libs)
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string(REPLACE "\n" " " LLVM_LDFLAGS "${LLVM_LDFLAGS} ${LLVM_SYSTEM_LIBS}")
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string(STRIP ${LLVM_LDFLAGS} LLVM_LDFLAGS)
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llvm_set(LIBRARY_DIRS libdir true)
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llvm_set_libs(LIBRARIES libs "${LLVM_FIND_COMPONENTS}")
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# LLVM bug: llvm-config --libs tablegen returns -lLLVM-3.8.0
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# but code for it is not in shared library
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if("${LLVM_FIND_COMPONENTS}" MATCHES "tablegen")
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if (NOT "${LLVM_LIBRARIES}" MATCHES "LLVMTableGen")
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set(LLVM_LIBRARIES "${LLVM_LIBRARIES};-lLLVMTableGen")
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endif()
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endif()
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# Versions below 4.0 do not support llvm-config --cmakedir
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if(${LLVM_VERSION_STRING} MATCHES "^3\\..*")
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set(LLVM_CMAKEDIR ${LLVM_LIBRARY_DIRS}/cmake/llvm)
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else()
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llvm_set(CMAKEDIR cmakedir)
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endif()
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llvm_set(TARGETS_TO_BUILD targets-built)
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string(REGEX MATCHALL "${pattern}[^ ]+" LLVM_TARGETS_TO_BUILD ${LLVM_TARGETS_TO_BUILD})
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# Parse LLVM_NATIVE_ARCH manually from LLVMConfig.cmake; including it leads to issues like
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# https://github.com/ldc-developers/ldc/issues/3079.
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file(STRINGS "${LLVM_CMAKEDIR}/LLVMConfig.cmake" LLVM_NATIVE_ARCH LIMIT_COUNT 1 REGEX "^set\\(LLVM_NATIVE_ARCH (.+)\\)$")
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string(REGEX MATCH "set\\(LLVM_NATIVE_ARCH (.+)\\)" LLVM_NATIVE_ARCH "${LLVM_NATIVE_ARCH}")
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set(LLVM_NATIVE_ARCH ${CMAKE_MATCH_1})
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message(STATUS "LLVM_NATIVE_ARCH: ${LLVM_NATIVE_ARCH}")
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endif()
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# On CMake builds of LLVM, the output of llvm-config --cxxflags does not
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# include -fno-rtti, leading to linker errors. Be sure to add it.
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if(NOT MSVC AND (CMAKE_COMPILER_IS_GNUCXX OR (${CMAKE_CXX_COMPILER_ID} STREQUAL "Clang")))
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if(NOT ${LLVM_CXXFLAGS} MATCHES "-fno-rtti")
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set(LLVM_CXXFLAGS "${LLVM_CXXFLAGS} -fno-rtti")
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endif()
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endif()
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# Remove some clang-specific flags for gcc.
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if(CMAKE_COMPILER_IS_GNUCXX)
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string(REPLACE "-Wcovered-switch-default " "" LLVM_CXXFLAGS ${LLVM_CXXFLAGS})
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string(REPLACE "-Wstring-conversion " "" LLVM_CXXFLAGS ${LLVM_CXXFLAGS})
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string(REPLACE "-fcolor-diagnostics " "" LLVM_CXXFLAGS ${LLVM_CXXFLAGS})
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# this requires more recent gcc versions (not supported by 4.9)
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string(REPLACE "-Werror=unguarded-availability-new " "" LLVM_CXXFLAGS ${LLVM_CXXFLAGS})
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endif()
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# Remove gcc-specific flags for clang.
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if(${CMAKE_CXX_COMPILER_ID} MATCHES "Clang")
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string(REPLACE "-Wno-maybe-uninitialized " "" LLVM_CXXFLAGS ${LLVM_CXXFLAGS})
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endif()
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string(REGEX REPLACE "([0-9]+).*" "\\1" LLVM_VERSION_MAJOR "${LLVM_VERSION_STRING}" )
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string(REGEX REPLACE "[0-9]+\\.([0-9]+).*[A-Za-z]*" "\\1" LLVM_VERSION_MINOR "${LLVM_VERSION_STRING}" )
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if (${LLVM_VERSION_STRING} VERSION_LESS ${LLVM_FIND_VERSION})
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message(FATAL_ERROR "Unsupported LLVM version found ${LLVM_VERSION_STRING}. At least version ${LLVM_FIND_VERSION} is required.")
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endif()
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# Use the default CMake facilities for handling QUIET/REQUIRED.
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(LLVM
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REQUIRED_VARS LLVM_ROOT_DIR LLVM_HOST_TARGET
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VERSION_VAR LLVM_VERSION_STRING)
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