1cmake_minimum_required(VERSION 3.20.0) 2set(LLVM_SUBPROJECT_TITLE "LLD") 3 4if(NOT DEFINED LLVM_COMMON_CMAKE_UTILS) 5 set(LLVM_COMMON_CMAKE_UTILS ${CMAKE_CURRENT_SOURCE_DIR}/../cmake) 6endif() 7include(${LLVM_COMMON_CMAKE_UTILS}/Modules/CMakePolicy.cmake 8 NO_POLICY_SCOPE) 9 10# If we are not building as a part of LLVM, build LLD as an 11# standalone project, using LLVM as an external library: 12if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR) 13 project(lld) 14 set(LLD_BUILT_STANDALONE TRUE) 15endif() 16 17# Must go below project(..) 18include(GNUInstallDirs) 19 20if(LLD_BUILT_STANDALONE) 21 set(CMAKE_CXX_STANDARD 17 CACHE STRING "C++ standard to conform to") 22 set(CMAKE_CXX_STANDARD_REQUIRED YES) 23 set(CMAKE_CXX_EXTENSIONS NO) 24 25 set(CMAKE_INCLUDE_CURRENT_DIR ON) 26 27 find_package(LLVM REQUIRED HINTS "${LLVM_CMAKE_DIR}") 28 list(APPEND CMAKE_MODULE_PATH "${LLVM_DIR}") 29 30 # Turn into CACHE PATHs for overwriting 31 set(LLVM_INCLUDE_DIRS ${LLVM_INCLUDE_DIRS} CACHE PATH "Path to llvm/include and any other header dirs needed") 32 set(LLVM_BINARY_DIR "${LLVM_BINARY_DIR}" CACHE PATH "Path to LLVM build tree") 33 set(LLVM_MAIN_SRC_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../llvm" CACHE PATH "Path to LLVM source tree") 34 35 find_program(LLVM_TABLEGEN_EXE "llvm-tblgen" ${LLVM_TOOLS_BINARY_DIR} 36 NO_DEFAULT_PATH) 37 38 # They are used as destination of target generators. 39 set(LLVM_RUNTIME_OUTPUT_INTDIR ${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/bin) 40 set(LLVM_LIBRARY_OUTPUT_INTDIR ${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/lib${LLVM_LIBDIR_SUFFIX}) 41 42 include(AddLLVM) 43 include(TableGen) 44 include(HandleLLVMOptions) 45 include(GetErrcMessages) 46 include(CheckAtomic) 47 48 set(PACKAGE_VERSION "${LLVM_PACKAGE_VERSION}") 49 50 include_directories(${LLVM_INCLUDE_DIRS}) 51 link_directories(${LLVM_LIBRARY_DIRS}) 52 53 if(LLVM_INCLUDE_TESTS) 54 find_package(Python3 ${LLVM_MINIMUM_PYTHON_VERSION} REQUIRED 55 COMPONENTS Interpreter) 56 57 # Check prebuilt llvm/utils. 58 if(EXISTS ${LLVM_TOOLS_BINARY_DIR}/FileCheck${CMAKE_EXECUTABLE_SUFFIX} 59 AND EXISTS ${LLVM_TOOLS_BINARY_DIR}/not${CMAKE_EXECUTABLE_SUFFIX}) 60 set(LLVM_UTILS_PROVIDED ON) 61 endif() 62 63 if(EXISTS ${LLVM_MAIN_SRC_DIR}/utils/lit/lit.py) 64 # Note: path not really used, except for checking if lit was found 65 set(LLVM_EXTERNAL_LIT ${LLVM_MAIN_SRC_DIR}/utils/lit/lit.py) 66 if(NOT LLVM_UTILS_PROVIDED) 67 add_subdirectory(${LLVM_MAIN_SRC_DIR}/utils/FileCheck utils/FileCheck) 68 add_subdirectory(${LLVM_MAIN_SRC_DIR}/utils/not utils/not) 69 set(LLVM_UTILS_PROVIDED ON) 70 set(LLD_TEST_DEPS FileCheck not) 71 endif() 72 73 if (NOT TARGET llvm_gtest) 74 message(FATAL_ERROR "llvm-gtest not found. Please install llvm-gtest or disable tests with -DLLVM_INCLUDE_TESTS=OFF") 75 endif() 76 else() 77 # Seek installed Lit. 78 find_program(LLVM_EXTERNAL_LIT 79 NAMES llvm-lit lit.py lit 80 PATHS "${LLVM_MAIN_SRC_DIR}/utils/lit" 81 DOC "Path to lit.py") 82 endif() 83 84 if(LLVM_EXTERNAL_LIT) 85 # Define the default arguments to use with 'lit', and an option for the user 86 # to override. 87 set(LIT_ARGS_DEFAULT "-sv") 88 if (MSVC OR XCODE) 89 set(LIT_ARGS_DEFAULT "${LIT_ARGS_DEFAULT} --no-progress-bar") 90 endif() 91 set(LLVM_LIT_ARGS "${LIT_ARGS_DEFAULT}" CACHE STRING "Default options for lit") 92 93 get_errc_messages(LLVM_LIT_ERRC_MESSAGES) 94 95 # On Win32 hosts, provide an option to specify the path to the GnuWin32 tools. 96 if(WIN32 AND NOT CYGWIN) 97 set(LLVM_LIT_TOOLS_DIR "" CACHE PATH "Path to GnuWin32 tools") 98 endif() 99 else() 100 set(LLVM_INCLUDE_TESTS OFF) 101 endif() 102 endif() 103endif() # standalone 104 105set(LLD_TOOLS_INSTALL_DIR "${CMAKE_INSTALL_BINDIR}" CACHE PATH 106 "Path for binary subdirectory (defaults to '${CMAKE_INSTALL_BINDIR}')") 107mark_as_advanced(LLD_TOOLS_INSTALL_DIR) 108 109set(LLD_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}) 110set(LLD_INCLUDE_DIR ${LLD_SOURCE_DIR}/include ) 111set(LLD_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR}) 112 113set(LLD_VENDOR ${PACKAGE_VENDOR} CACHE STRING 114 "Vendor-specific text for showing with version information.") 115 116if(LLD_VENDOR) 117 add_definitions(-DLLD_VENDOR="${LLD_VENDOR}") 118endif() 119 120# Compute the LLD version from the LLVM version. 121string(REGEX MATCH "[0-9]+\\.[0-9]+(\\.[0-9]+)?" LLD_VERSION 122 ${PACKAGE_VERSION}) 123message(STATUS "LLD version: ${LLD_VERSION}") 124 125string(REGEX REPLACE "([0-9]+)\\.[0-9]+(\\.[0-9]+)?" "\\1" LLD_VERSION_MAJOR 126 ${LLD_VERSION}) 127string(REGEX REPLACE "[0-9]+\\.([0-9]+)(\\.[0-9]+)?" "\\1" LLD_VERSION_MINOR 128 ${LLD_VERSION}) 129 130# Configure the Version.inc file. 131configure_file( 132 ${CMAKE_CURRENT_SOURCE_DIR}/include/lld/Common/Version.inc.in 133 ${CMAKE_CURRENT_BINARY_DIR}/include/lld/Common/Version.inc) 134 135 136if (CMAKE_SOURCE_DIR STREQUAL CMAKE_BINARY_DIR) 137 message(FATAL_ERROR "In-source builds are not allowed. CMake would overwrite " 138"the makefiles distributed with LLVM. Please create a directory and run cmake " 139"from there, passing the path to this source directory as the last argument. " 140"This process created the file `CMakeCache.txt' and the directory " 141"`CMakeFiles'. Please delete them.") 142endif() 143 144# Add path for custom modules. 145list(INSERT CMAKE_MODULE_PATH 0 146 "${LLD_SOURCE_DIR}/cmake/modules" 147 "${LLVM_COMMON_CMAKE_UTILS}/Modules" 148 ) 149 150include(AddLLD) 151 152option(LLD_USE_VTUNE 153 "Enable VTune user task tracking." 154 OFF) 155if (LLD_USE_VTUNE) 156 find_package(VTune) 157 if (VTUNE_FOUND) 158 include_directories(${VTune_INCLUDE_DIRS}) 159 list(APPEND LLVM_COMMON_LIBS ${VTune_LIBRARIES}) 160 add_definitions(-DLLD_HAS_VTUNE) 161 endif() 162endif() 163 164option(LLD_BUILD_TOOLS 165 "Build the lld tools. If OFF, just generate build targets." ON) 166 167option(LLD_DEFAULT_LD_LLD_IS_MINGW 168 "Use MinGW as the default backend for ld.lld. If OFF, ELF will be used." OFF) 169if (LLD_DEFAULT_LD_LLD_IS_MINGW) 170 add_definitions("-DLLD_DEFAULT_LD_LLD_IS_MINGW=1") 171endif() 172 173if (MSVC) 174 add_definitions(-wd4530) # Suppress 'warning C4530: C++ exception handler used, but unwind semantics are not enabled.' 175 add_definitions(-wd4062) # Suppress 'warning C4062: enumerator X in switch of enum Y is not handled' from system header. 176endif() 177 178include_directories(BEFORE 179 ${CMAKE_CURRENT_BINARY_DIR}/include 180 ${CMAKE_CURRENT_SOURCE_DIR}/include 181 ) 182 183if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY) 184 install(DIRECTORY include/ 185 DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}" 186 FILES_MATCHING 187 PATTERN "*.h" 188 ) 189endif() 190 191add_subdirectory(Common) 192add_subdirectory(tools/lld) 193 194if (LLVM_INCLUDE_TESTS) 195 add_custom_target(LLDUnitTests) 196 set_target_properties(LLDUnitTests PROPERTIES FOLDER "LLD/Tests") 197 if (TARGET llvm_gtest) 198 add_subdirectory(unittests) 199 endif() 200 add_subdirectory(test) 201endif() 202 203add_subdirectory(docs) 204add_subdirectory(COFF) 205add_subdirectory(ELF) 206add_subdirectory(MachO) 207add_subdirectory(MinGW) 208add_subdirectory(wasm) 209 210add_subdirectory(cmake/modules) 211