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zig/cmake/Findllvm.cmake
Cody Tapscott 4113a790b0 CMake: Search more permissively for LLD 
This change relaxes the restriction added in the prior commit that LLD
should be alongside LLVM.

This also leaves unresolved the issue of making sure the link mode
(static or shared) of LLD matches that of LLVM/Clang. That would be an
unfortunate restriction, since LLD seems to be provided only as a static
lib on some distros.
2022-07-23 08:55:56 -07:00

371 lines
14 KiB
CMake
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# Copyright (c) 2014 Andrew Kelley
# This file is MIT licensed.
# See http://opensource.org/licenses/MIT
# LLVM_FOUND
# LLVM_INCLUDE_DIRS
# LLVM_LIBRARIES
# LLVM_LIBDIRS
# LLVM_LINK_MODE
if(ZIG_USE_LLVM_CONFIG)
while(1)
unset(LLVM_CONFIG_EXE CACHE)
find_program(LLVM_CONFIG_EXE
NAMES llvm-config-14 llvm-config-14.0 llvm-config140 llvm-config14 llvm-config NAMES_PER_DIR
PATHS
"/mingw64/bin"
"/c/msys64/mingw64/bin"
"c:/msys64/mingw64/bin"
"C:/Libraries/llvm-14.0.0/bin")
if ("${LLVM_CONFIG_EXE}" STREQUAL "LLVM_CONFIG_EXE-NOTFOUND")
if (DEFINED LLVM_CONFIG_ERROR_MESSAGE)
message(FATAL_ERROR ${LLVM_CONFIG_ERROR_MESSAGE})
else()
message(FATAL_ERROR "unable to find llvm-config")
endif()
endif()
# Check that this LLVM is the right version
execute_process(
COMMAND ${LLVM_CONFIG_EXE} --version
OUTPUT_VARIABLE LLVM_CONFIG_VERSION
OUTPUT_STRIP_TRAILING_WHITESPACE)
get_filename_component(LLVM_CONFIG_DIR "${LLVM_CONFIG_EXE}" DIRECTORY)
if("${LLVM_CONFIG_VERSION}" VERSION_LESS 14 OR "${LLVM_CONFIG_VERSION}" VERSION_EQUAL 15 OR "${LLVM_CONFIG_VERSION}" VERSION_GREATER 15)
# Save the error message, in case this is the last llvm-config we find
set(LLVM_CONFIG_ERROR_MESSAGE "expected LLVM 14.x but found ${LLVM_CONFIG_VERSION} using ${LLVM_CONFIG_EXE}")
# Ignore this directory and try the search again
list(APPEND CMAKE_IGNORE_PATH "${LLVM_CONFIG_DIR}")
continue()
endif()
# Check that this LLVM supports linking as a shared/static library, if requested
if (ZIG_SHARED_LLVM OR ZIG_STATIC_LLVM)
if (ZIG_SHARED_LLVM)
set(STATIC_OR_SHARED_LINK "--link-shared")
elseif (ZIG_STATIC_LLVM)
set(STATIC_OR_SHARED_LINK "--link-static")
endif()
execute_process(
COMMAND ${LLVM_CONFIG_EXE} --libs ${STATIC_OR_SHARED_LINK}
OUTPUT_QUIET
ERROR_VARIABLE LLVM_CONFIG_ERROR
ERROR_STRIP_TRAILING_WHITESPACE)
if (LLVM_CONFIG_ERROR)
# Save the error message, in case this is the last llvm-config we find
if (ZIG_SHARED_LLVM)
set(LLVM_CONFIG_ERROR_MESSAGE "LLVM 14.x found at ${LLVM_CONFIG_EXE} does not support linking as a shared library")
else()
set(LLVM_CONFIG_ERROR_MESSAGE "LLVM 14.x found at ${LLVM_CONFIG_EXE} does not support linking as a static library")
endif()
# Ignore this directory and try the search again
list(APPEND CMAKE_IGNORE_PATH "${LLVM_CONFIG_DIR}")
continue()
endif()
endif()
execute_process(
COMMAND ${LLVM_CONFIG_EXE} --targets-built
OUTPUT_VARIABLE LLVM_TARGETS_BUILT_SPACES
OUTPUT_STRIP_TRAILING_WHITESPACE)
string(REPLACE " " ";" LLVM_TARGETS_BUILT "${LLVM_TARGETS_BUILT_SPACES}")
function(NEED_TARGET TARGET_NAME)
list (FIND LLVM_TARGETS_BUILT "${TARGET_NAME}" _index)
if (${_index} EQUAL -1)
# Save the error message, in case this is the last llvm-config we find
set(LLVM_CONFIG_ERROR_MESSAGE "LLVM (according to ${LLVM_CONFIG_EXE}) is missing target ${TARGET_NAME}. Zig requires LLVM to be built with all default targets enabled.")
# Ignore this directory and try the search again
list(APPEND CMAKE_IGNORE_PATH "${LLVM_CONFIG_DIR}")
continue()
endif()
endfunction(NEED_TARGET)
NEED_TARGET("AArch64")
NEED_TARGET("AMDGPU")
NEED_TARGET("ARM")
NEED_TARGET("AVR")
NEED_TARGET("BPF")
NEED_TARGET("Hexagon")
NEED_TARGET("Lanai")
NEED_TARGET("Mips")
NEED_TARGET("MSP430")
NEED_TARGET("NVPTX")
NEED_TARGET("PowerPC")
NEED_TARGET("RISCV")
NEED_TARGET("Sparc")
NEED_TARGET("SystemZ")
NEED_TARGET("VE")
NEED_TARGET("WebAssembly")
NEED_TARGET("X86")
NEED_TARGET("XCore")
# Got it!
break()
endwhile()
if(ZIG_SHARED_LLVM OR ZIG_STATIC_LLVM)
execute_process(
COMMAND ${LLVM_CONFIG_EXE} --libfiles ${STATIC_OR_SHARED_LINK}
OUTPUT_VARIABLE LLVM_LIBRARIES_SPACES
OUTPUT_STRIP_TRAILING_WHITESPACE)
string(REPLACE " " ";" LLVM_LIBRARIES "${LLVM_LIBRARIES_SPACES}")
execute_process(
COMMAND ${LLVM_CONFIG_EXE} --libdir ${STATIC_OR_SHARED_LINK}
OUTPUT_VARIABLE LLVM_LIBDIRS_SPACES
OUTPUT_STRIP_TRAILING_WHITESPACE)
string(REPLACE " " ";" LLVM_LIBDIRS "${LLVM_LIBDIRS_SPACES}")
execute_process(
COMMAND ${LLVM_CONFIG_EXE} --system-libs ${STATIC_OR_SHARED_LINK}
OUTPUT_VARIABLE LLVM_SYSTEM_LIBS_SPACES
OUTPUT_STRIP_TRAILING_WHITESPACE)
string(REPLACE " " ";" LLVM_SYSTEM_LIBS "${LLVM_SYSTEM_LIBS_SPACES}")
execute_process(
COMMAND ${LLVM_CONFIG_EXE} --shared-mode ${STATIC_OR_SHARED_LINK}
OUTPUT_VARIABLE LLVM_LINK_MODE
OUTPUT_STRIP_TRAILING_WHITESPACE)
else()
execute_process(
COMMAND ${LLVM_CONFIG_EXE} --libs
OUTPUT_VARIABLE LLVM_LIBRARIES_SPACES
OUTPUT_STRIP_TRAILING_WHITESPACE)
string(REPLACE " " ";" LLVM_LIBRARIES "${LLVM_LIBRARIES_SPACES}")
execute_process(
COMMAND ${LLVM_CONFIG_EXE} --libdir
OUTPUT_VARIABLE LLVM_LIBDIRS_SPACES
OUTPUT_STRIP_TRAILING_WHITESPACE)
string(REPLACE " " ";" LLVM_LIBDIRS "${LLVM_LIBDIRS_SPACES}")
execute_process(
COMMAND ${LLVM_CONFIG_EXE} --system-libs
OUTPUT_VARIABLE LLVM_SYSTEM_LIBS_SPACES
OUTPUT_STRIP_TRAILING_WHITESPACE)
string(REPLACE " " ";" LLVM_SYSTEM_LIBS "${LLVM_SYSTEM_LIBS_SPACES}")
execute_process(
COMMAND ${LLVM_CONFIG_EXE} --shared-mode
OUTPUT_VARIABLE LLVM_LINK_MODE
OUTPUT_STRIP_TRAILING_WHITESPACE)
endif()
if (${LLVM_LINK_MODE} STREQUAL "shared")
# We always ask for the system libs corresponding to static linking,
# since on some distros LLD is only available as a static library
# and we need these libraries to link it successfully
execute_process(
COMMAND ${LLVM_CONFIG_EXE} --system-libs --link-static
OUTPUT_VARIABLE LLVM_STATIC_SYSTEM_LIBS_SPACES
ERROR_QUIET # Some installations have no static libs, we just ignore the failure
OUTPUT_STRIP_TRAILING_WHITESPACE)
string(REPLACE " " ";" LLVM_STATIC_SYSTEM_LIBS "${LLVM_STATIC_SYSTEM_LIBS_SPACES}")
set(LLVM_LIBRARIES ${LLVM_LIBRARIES} ${LLVM_SYSTEM_LIBS} ${LLVM_STATIC_SYSTEM_LIBS})
else()
set(LLVM_LIBRARIES ${LLVM_LIBRARIES} ${LLVM_SYSTEM_LIBS})
endif()
execute_process(
COMMAND ${LLVM_CONFIG_EXE} --includedir
OUTPUT_VARIABLE LLVM_INCLUDE_DIRS_SPACES
OUTPUT_STRIP_TRAILING_WHITESPACE)
string(REPLACE " " ";" LLVM_INCLUDE_DIRS "${LLVM_INCLUDE_DIRS_SPACES}")
link_directories("${CMAKE_PREFIX_PATH}/lib")
link_directories("${LLVM_LIBDIRS}")
else()
# Here we assume that we're cross compiling with Zig, of course. No reason
# to support more complicated setups.
macro(FIND_AND_ADD_LLVM_LIB _libname_)
string(TOUPPER ${_libname_} _prettylibname_)
find_library(LLVM_${_prettylibname_}_LIB
NAMES ${_libname_} NAMES_PER_DIR)
set(LLVM_LIBRARIES ${LLVM_LIBRARIES} ${LLVM_${_prettylibname_}_LIB})
endmacro(FIND_AND_ADD_LLVM_LIB)
set(LLVM_LINK_MODE "static")
# This list can be re-generated with `llvm-config --libfiles` and then
# reformatting using your favorite text editor. Note we do not execute
# `llvm-config` here because we are cross compiling.
FIND_AND_ADD_LLVM_LIB(LLVMWindowsManifest)
FIND_AND_ADD_LLVM_LIB(LLVMXRay)
FIND_AND_ADD_LLVM_LIB(LLVMLibDriver)
FIND_AND_ADD_LLVM_LIB(LLVMDlltoolDriver)
FIND_AND_ADD_LLVM_LIB(LLVMCoverage)
FIND_AND_ADD_LLVM_LIB(LLVMLineEditor)
FIND_AND_ADD_LLVM_LIB(LLVMXCoreDisassembler)
FIND_AND_ADD_LLVM_LIB(LLVMXCoreCodeGen)
FIND_AND_ADD_LLVM_LIB(LLVMXCoreDesc)
FIND_AND_ADD_LLVM_LIB(LLVMXCoreInfo)
FIND_AND_ADD_LLVM_LIB(LLVMX86TargetMCA)
FIND_AND_ADD_LLVM_LIB(LLVMX86Disassembler)
FIND_AND_ADD_LLVM_LIB(LLVMX86AsmParser)
FIND_AND_ADD_LLVM_LIB(LLVMX86CodeGen)
FIND_AND_ADD_LLVM_LIB(LLVMX86Desc)
FIND_AND_ADD_LLVM_LIB(LLVMX86Info)
FIND_AND_ADD_LLVM_LIB(LLVMWebAssemblyDisassembler)
FIND_AND_ADD_LLVM_LIB(LLVMWebAssemblyAsmParser)
FIND_AND_ADD_LLVM_LIB(LLVMWebAssemblyCodeGen)
FIND_AND_ADD_LLVM_LIB(LLVMWebAssemblyDesc)
FIND_AND_ADD_LLVM_LIB(LLVMWebAssemblyUtils)
FIND_AND_ADD_LLVM_LIB(LLVMWebAssemblyInfo)
FIND_AND_ADD_LLVM_LIB(LLVMVEDisassembler)
FIND_AND_ADD_LLVM_LIB(LLVMVEAsmParser)
FIND_AND_ADD_LLVM_LIB(LLVMVECodeGen)
FIND_AND_ADD_LLVM_LIB(LLVMVEDesc)
FIND_AND_ADD_LLVM_LIB(LLVMVEInfo)
FIND_AND_ADD_LLVM_LIB(LLVMSystemZDisassembler)
FIND_AND_ADD_LLVM_LIB(LLVMSystemZAsmParser)
FIND_AND_ADD_LLVM_LIB(LLVMSystemZCodeGen)
FIND_AND_ADD_LLVM_LIB(LLVMSystemZDesc)
FIND_AND_ADD_LLVM_LIB(LLVMSystemZInfo)
FIND_AND_ADD_LLVM_LIB(LLVMSparcDisassembler)
FIND_AND_ADD_LLVM_LIB(LLVMSparcAsmParser)
FIND_AND_ADD_LLVM_LIB(LLVMSparcCodeGen)
FIND_AND_ADD_LLVM_LIB(LLVMSparcDesc)
FIND_AND_ADD_LLVM_LIB(LLVMSparcInfo)
FIND_AND_ADD_LLVM_LIB(LLVMRISCVDisassembler)
FIND_AND_ADD_LLVM_LIB(LLVMRISCVAsmParser)
FIND_AND_ADD_LLVM_LIB(LLVMRISCVCodeGen)
FIND_AND_ADD_LLVM_LIB(LLVMRISCVDesc)
FIND_AND_ADD_LLVM_LIB(LLVMRISCVInfo)
FIND_AND_ADD_LLVM_LIB(LLVMPowerPCDisassembler)
FIND_AND_ADD_LLVM_LIB(LLVMPowerPCAsmParser)
FIND_AND_ADD_LLVM_LIB(LLVMPowerPCCodeGen)
FIND_AND_ADD_LLVM_LIB(LLVMPowerPCDesc)
FIND_AND_ADD_LLVM_LIB(LLVMPowerPCInfo)
FIND_AND_ADD_LLVM_LIB(LLVMNVPTXCodeGen)
FIND_AND_ADD_LLVM_LIB(LLVMNVPTXDesc)
FIND_AND_ADD_LLVM_LIB(LLVMNVPTXInfo)
FIND_AND_ADD_LLVM_LIB(LLVMMSP430Disassembler)
FIND_AND_ADD_LLVM_LIB(LLVMMSP430AsmParser)
FIND_AND_ADD_LLVM_LIB(LLVMMSP430CodeGen)
FIND_AND_ADD_LLVM_LIB(LLVMMSP430Desc)
FIND_AND_ADD_LLVM_LIB(LLVMMSP430Info)
FIND_AND_ADD_LLVM_LIB(LLVMMipsDisassembler)
FIND_AND_ADD_LLVM_LIB(LLVMMipsAsmParser)
FIND_AND_ADD_LLVM_LIB(LLVMMipsCodeGen)
FIND_AND_ADD_LLVM_LIB(LLVMMipsDesc)
FIND_AND_ADD_LLVM_LIB(LLVMMipsInfo)
FIND_AND_ADD_LLVM_LIB(LLVMLanaiDisassembler)
FIND_AND_ADD_LLVM_LIB(LLVMLanaiCodeGen)
FIND_AND_ADD_LLVM_LIB(LLVMLanaiAsmParser)
FIND_AND_ADD_LLVM_LIB(LLVMLanaiDesc)
FIND_AND_ADD_LLVM_LIB(LLVMLanaiInfo)
FIND_AND_ADD_LLVM_LIB(LLVMHexagonDisassembler)
FIND_AND_ADD_LLVM_LIB(LLVMHexagonCodeGen)
FIND_AND_ADD_LLVM_LIB(LLVMHexagonAsmParser)
FIND_AND_ADD_LLVM_LIB(LLVMHexagonDesc)
FIND_AND_ADD_LLVM_LIB(LLVMHexagonInfo)
FIND_AND_ADD_LLVM_LIB(LLVMBPFDisassembler)
FIND_AND_ADD_LLVM_LIB(LLVMBPFAsmParser)
FIND_AND_ADD_LLVM_LIB(LLVMBPFCodeGen)
FIND_AND_ADD_LLVM_LIB(LLVMBPFDesc)
FIND_AND_ADD_LLVM_LIB(LLVMBPFInfo)
FIND_AND_ADD_LLVM_LIB(LLVMAVRDisassembler)
FIND_AND_ADD_LLVM_LIB(LLVMAVRAsmParser)
FIND_AND_ADD_LLVM_LIB(LLVMAVRCodeGen)
FIND_AND_ADD_LLVM_LIB(LLVMAVRDesc)
FIND_AND_ADD_LLVM_LIB(LLVMAVRInfo)
FIND_AND_ADD_LLVM_LIB(LLVMARMDisassembler)
FIND_AND_ADD_LLVM_LIB(LLVMARMAsmParser)
FIND_AND_ADD_LLVM_LIB(LLVMARMCodeGen)
FIND_AND_ADD_LLVM_LIB(LLVMARMDesc)
FIND_AND_ADD_LLVM_LIB(LLVMARMUtils)
FIND_AND_ADD_LLVM_LIB(LLVMARMInfo)
FIND_AND_ADD_LLVM_LIB(LLVMAMDGPUTargetMCA)
FIND_AND_ADD_LLVM_LIB(LLVMAMDGPUDisassembler)
FIND_AND_ADD_LLVM_LIB(LLVMAMDGPUAsmParser)
FIND_AND_ADD_LLVM_LIB(LLVMAMDGPUCodeGen)
FIND_AND_ADD_LLVM_LIB(LLVMAMDGPUDesc)
FIND_AND_ADD_LLVM_LIB(LLVMAMDGPUUtils)
FIND_AND_ADD_LLVM_LIB(LLVMAMDGPUInfo)
FIND_AND_ADD_LLVM_LIB(LLVMAArch64Disassembler)
FIND_AND_ADD_LLVM_LIB(LLVMAArch64AsmParser)
FIND_AND_ADD_LLVM_LIB(LLVMAArch64CodeGen)
FIND_AND_ADD_LLVM_LIB(LLVMAArch64Desc)
FIND_AND_ADD_LLVM_LIB(LLVMAArch64Utils)
FIND_AND_ADD_LLVM_LIB(LLVMAArch64Info)
FIND_AND_ADD_LLVM_LIB(LLVMOrcJIT)
FIND_AND_ADD_LLVM_LIB(LLVMMCJIT)
FIND_AND_ADD_LLVM_LIB(LLVMJITLink)
FIND_AND_ADD_LLVM_LIB(LLVMInterpreter)
FIND_AND_ADD_LLVM_LIB(LLVMExecutionEngine)
FIND_AND_ADD_LLVM_LIB(LLVMRuntimeDyld)
FIND_AND_ADD_LLVM_LIB(LLVMOrcTargetProcess)
FIND_AND_ADD_LLVM_LIB(LLVMOrcShared)
FIND_AND_ADD_LLVM_LIB(LLVMDWP)
FIND_AND_ADD_LLVM_LIB(LLVMSymbolize)
FIND_AND_ADD_LLVM_LIB(LLVMDebugInfoPDB)
FIND_AND_ADD_LLVM_LIB(LLVMDebugInfoGSYM)
FIND_AND_ADD_LLVM_LIB(LLVMOption)
FIND_AND_ADD_LLVM_LIB(LLVMObjectYAML)
FIND_AND_ADD_LLVM_LIB(LLVMMCA)
FIND_AND_ADD_LLVM_LIB(LLVMMCDisassembler)
FIND_AND_ADD_LLVM_LIB(LLVMLTO)
FIND_AND_ADD_LLVM_LIB(LLVMPasses)
FIND_AND_ADD_LLVM_LIB(LLVMCFGuard)
FIND_AND_ADD_LLVM_LIB(LLVMCoroutines)
FIND_AND_ADD_LLVM_LIB(LLVMObjCARCOpts)
FIND_AND_ADD_LLVM_LIB(LLVMipo)
FIND_AND_ADD_LLVM_LIB(LLVMVectorize)
FIND_AND_ADD_LLVM_LIB(LLVMLinker)
FIND_AND_ADD_LLVM_LIB(LLVMInstrumentation)
FIND_AND_ADD_LLVM_LIB(LLVMFrontendOpenMP)
FIND_AND_ADD_LLVM_LIB(LLVMFrontendOpenACC)
FIND_AND_ADD_LLVM_LIB(LLVMExtensions)
FIND_AND_ADD_LLVM_LIB(LLVMDWARFLinker)
FIND_AND_ADD_LLVM_LIB(LLVMGlobalISel)
FIND_AND_ADD_LLVM_LIB(LLVMMIRParser)
FIND_AND_ADD_LLVM_LIB(LLVMAsmPrinter)
FIND_AND_ADD_LLVM_LIB(LLVMDebugInfoMSF)
FIND_AND_ADD_LLVM_LIB(LLVMSelectionDAG)
FIND_AND_ADD_LLVM_LIB(LLVMCodeGen)
FIND_AND_ADD_LLVM_LIB(LLVMIRReader)
FIND_AND_ADD_LLVM_LIB(LLVMAsmParser)
FIND_AND_ADD_LLVM_LIB(LLVMInterfaceStub)
FIND_AND_ADD_LLVM_LIB(LLVMFileCheck)
FIND_AND_ADD_LLVM_LIB(LLVMFuzzMutate)
FIND_AND_ADD_LLVM_LIB(LLVMTarget)
FIND_AND_ADD_LLVM_LIB(LLVMScalarOpts)
FIND_AND_ADD_LLVM_LIB(LLVMInstCombine)
FIND_AND_ADD_LLVM_LIB(LLVMAggressiveInstCombine)
FIND_AND_ADD_LLVM_LIB(LLVMTransformUtils)
FIND_AND_ADD_LLVM_LIB(LLVMBitWriter)
FIND_AND_ADD_LLVM_LIB(LLVMAnalysis)
FIND_AND_ADD_LLVM_LIB(LLVMProfileData)
FIND_AND_ADD_LLVM_LIB(LLVMDebugInfoDWARF)
FIND_AND_ADD_LLVM_LIB(LLVMObject)
FIND_AND_ADD_LLVM_LIB(LLVMTextAPI)
FIND_AND_ADD_LLVM_LIB(LLVMMCParser)
FIND_AND_ADD_LLVM_LIB(LLVMMC)
FIND_AND_ADD_LLVM_LIB(LLVMDebugInfoCodeView)
FIND_AND_ADD_LLVM_LIB(LLVMBitReader)
FIND_AND_ADD_LLVM_LIB(LLVMCore)
FIND_AND_ADD_LLVM_LIB(LLVMRemarks)
FIND_AND_ADD_LLVM_LIB(LLVMBitstreamReader)
FIND_AND_ADD_LLVM_LIB(LLVMBinaryFormat)
FIND_AND_ADD_LLVM_LIB(LLVMSupport)
FIND_AND_ADD_LLVM_LIB(LLVMDemangle)
get_filename_component(LLVM_LIBDIRS "${LLVM_LLVMCORE_LIB}" DIRECTORY)
find_path(LLVM_INCLUDE_DIRS NAMES llvm/IR/IRBuilder.h)
endif()
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(llvm DEFAULT_MSG LLVM_LIBRARIES LLVM_INCLUDE_DIRS)
mark_as_advanced(LLVM_INCLUDE_DIRS LLVM_LIBRARIES LLVM_LIBDIRS)
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