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CMakeLists.txt
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cmake_minimum_required(VERSION 3.13.4)
if(NOT DEFINED LLVM_COMMON_CMAKE_UTILS)
set(LLVM_COMMON_CMAKE_UTILS ${CMAKE_CURRENT_SOURCE_DIR}/../cmake)
endif()
include(${LLVM_COMMON_CMAKE_UTILS}/Modules/CMakePolicy.cmake
NO_POLICY_SCOPE)
# If we are not building as a part of LLVM, build LLD as an
# standalone project, using LLVM as an external library:
if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
project(lld)
set(LLD_BUILT_STANDALONE TRUE)
if ("${CMAKE_VERSION}" VERSION_LESS "3.20.0")
message(WARNING
"Your CMake version is ${CMAKE_VERSION}. Starting with LLVM 17.0.0, the "
"minimum version of CMake required to build LLVM will become 3.20.0, and "
"using an older CMake will become an error. Please upgrade your CMake to "
"at least 3.20.0 now to avoid issues in the future!")
endif()
endif()
# Must go below project(..)
include(GNUInstallDirs)
if(LLD_BUILT_STANDALONE)
set(CMAKE_CXX_STANDARD 17 CACHE STRING "C++ standard to conform to")
set(CMAKE_CXX_STANDARD_REQUIRED YES)
set(CMAKE_CXX_EXTENSIONS NO)
set(CMAKE_INCLUDE_CURRENT_DIR ON)
find_package(LLVM REQUIRED HINTS "${LLVM_CMAKE_DIR}")
list(APPEND CMAKE_MODULE_PATH "${LLVM_DIR}")
# Turn into CACHE PATHs for overwriting
set(LLVM_INCLUDE_DIRS ${LLVM_INCLUDE_DIRS} CACHE PATH "Path to llvm/include and any other header dirs needed")
set(LLVM_BINARY_DIR "${LLVM_BINARY_DIR}" CACHE PATH "Path to LLVM build tree")
set(LLVM_MAIN_SRC_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../llvm" CACHE PATH "Path to LLVM source tree")
find_program(LLVM_TABLEGEN_EXE "llvm-tblgen" ${LLVM_TOOLS_BINARY_DIR}
NO_DEFAULT_PATH)
# They are used as destination of target generators.
set(LLVM_RUNTIME_OUTPUT_INTDIR ${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/bin)
set(LLVM_LIBRARY_OUTPUT_INTDIR ${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/lib${LLVM_LIBDIR_SUFFIX})
include(AddLLVM)
include(TableGen)
include(HandleLLVMOptions)
include(GetErrcMessages)
include(CheckAtomic)
set(PACKAGE_VERSION "${LLVM_PACKAGE_VERSION}")
include_directories(${LLVM_INCLUDE_DIRS})
link_directories(${LLVM_LIBRARY_DIRS})
if(LLVM_INCLUDE_TESTS)
find_package(Python3 ${LLVM_MINIMUM_PYTHON_VERSION} REQUIRED
COMPONENTS Interpreter)
# Check prebuilt llvm/utils.
if(EXISTS ${LLVM_TOOLS_BINARY_DIR}/FileCheck${CMAKE_EXECUTABLE_SUFFIX}
AND EXISTS ${LLVM_TOOLS_BINARY_DIR}/not${CMAKE_EXECUTABLE_SUFFIX})
set(LLVM_UTILS_PROVIDED ON)
endif()
if(EXISTS ${LLVM_MAIN_SRC_DIR}/utils/lit/lit.py)
# Note: path not really used, except for checking if lit was found
set(LLVM_LIT ${LLVM_MAIN_SRC_DIR}/utils/lit/lit.py)
if(NOT LLVM_UTILS_PROVIDED)
add_subdirectory(${LLVM_MAIN_SRC_DIR}/utils/FileCheck utils/FileCheck)
add_subdirectory(${LLVM_MAIN_SRC_DIR}/utils/not utils/not)
set(LLVM_UTILS_PROVIDED ON)
set(LLD_TEST_DEPS FileCheck not)
endif()
if (NOT TARGET llvm_gtest)
message(FATAL_ERROR "llvm-gtest not found. Please install llvm-gtest or disable tests with -DLLVM_INCLUDE_TESTS=OFF")
endif()
else()
# Seek installed Lit.
find_program(LLVM_LIT
NAMES llvm-lit lit.py lit
PATHS "${LLVM_MAIN_SRC_DIR}/utils/lit"
DOC "Path to lit.py")
endif()
if(LLVM_LIT)
# Define the default arguments to use with 'lit', and an option for the user
# to override.
set(LIT_ARGS_DEFAULT "-sv")
if (MSVC OR XCODE)
set(LIT_ARGS_DEFAULT "${LIT_ARGS_DEFAULT} --no-progress-bar")
endif()
set(LLVM_LIT_ARGS "${LIT_ARGS_DEFAULT}" CACHE STRING "Default options for lit")
get_errc_messages(LLVM_LIT_ERRC_MESSAGES)
# On Win32 hosts, provide an option to specify the path to the GnuWin32 tools.
if(WIN32 AND NOT CYGWIN)
set(LLVM_LIT_TOOLS_DIR "" CACHE PATH "Path to GnuWin32 tools")
endif()
else()
set(LLVM_INCLUDE_TESTS OFF)
endif()
endif()
if(LLVM_HAVE_LIBXAR)
set(XAR_LIB xar)
endif()
endif() # standalone
set(LLD_TOOLS_INSTALL_DIR "${CMAKE_INSTALL_BINDIR}" CACHE PATH
"Path for binary subdirectory (defaults to '${CMAKE_INSTALL_BINDIR}')")
mark_as_advanced(LLD_TOOLS_INSTALL_DIR)
set(LLD_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})
set(LLD_INCLUDE_DIR ${LLD_SOURCE_DIR}/include )
set(LLD_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR})
set(LLD_VENDOR ${PACKAGE_VENDOR} CACHE STRING
"Vendor-specific text for showing with version information.")
if(LLD_VENDOR)
add_definitions(-DLLD_VENDOR="${LLD_VENDOR}")
endif()
# Compute the LLD version from the LLVM version.
string(REGEX MATCH "[0-9]+\\.[0-9]+(\\.[0-9]+)?" LLD_VERSION
${PACKAGE_VERSION})
message(STATUS "LLD version: ${LLD_VERSION}")
string(REGEX REPLACE "([0-9]+)\\.[0-9]+(\\.[0-9]+)?" "\\1" LLD_VERSION_MAJOR
${LLD_VERSION})
string(REGEX REPLACE "[0-9]+\\.([0-9]+)(\\.[0-9]+)?" "\\1" LLD_VERSION_MINOR
${LLD_VERSION})
# Configure the Version.inc file.
configure_file(
${CMAKE_CURRENT_SOURCE_DIR}/include/lld/Common/Version.inc.in
${CMAKE_CURRENT_BINARY_DIR}/include/lld/Common/Version.inc)
if (CMAKE_SOURCE_DIR STREQUAL CMAKE_BINARY_DIR)
message(FATAL_ERROR "In-source builds are not allowed. CMake would overwrite "
"the makefiles distributed with LLVM. Please create a directory and run cmake "
"from there, passing the path to this source directory as the last argument. "
"This process created the file `CMakeCache.txt' and the directory "
"`CMakeFiles'. Please delete them.")
endif()
# Add path for custom modules.
list(INSERT CMAKE_MODULE_PATH 0
"${LLD_SOURCE_DIR}/cmake/modules"
"${LLVM_COMMON_CMAKE_UTILS}/Modules"
)
include(AddLLD)
option(LLD_USE_VTUNE
"Enable VTune user task tracking."
OFF)
if (LLD_USE_VTUNE)
find_package(VTune)
if (VTUNE_FOUND)
include_directories(${VTune_INCLUDE_DIRS})
list(APPEND LLVM_COMMON_LIBS ${VTune_LIBRARIES})
add_definitions(-DLLD_HAS_VTUNE)
endif()
endif()
option(LLD_BUILD_TOOLS
"Build the lld tools. If OFF, just generate build targets." ON)
option(LLD_DEFAULT_LD_LLD_IS_MINGW
"Use MinGW as the default backend for ld.lld. If OFF, ELF will be used." OFF)
if (LLD_DEFAULT_LD_LLD_IS_MINGW)
add_definitions("-DLLD_DEFAULT_LD_LLD_IS_MINGW=1")
endif()
if (MSVC)
add_definitions(-wd4530) # Suppress 'warning C4530: C++ exception handler used, but unwind semantics are not enabled.'
add_definitions(-wd4062) # Suppress 'warning C4062: enumerator X in switch of enum Y is not handled' from system header.
endif()
include_directories(BEFORE
${CMAKE_CURRENT_BINARY_DIR}/include
${CMAKE_CURRENT_SOURCE_DIR}/include
)
if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY)
install(DIRECTORY include/
DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}"
FILES_MATCHING
PATTERN "*.h"
)
endif()
add_subdirectory(Common)
add_subdirectory(tools/lld)
if (LLVM_INCLUDE_TESTS)
add_subdirectory(test)
endif()
add_subdirectory(docs)
add_subdirectory(COFF)
add_subdirectory(ELF)
add_subdirectory(MachO)
add_subdirectory(MinGW)
add_subdirectory(wasm)
add_subdirectory(cmake/modules)