1# Check if lld is built as a standalone project. 2if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR) 3 project(lld) 4 cmake_minimum_required(VERSION 3.13.4) 5 6 set(CMAKE_INCLUDE_CURRENT_DIR ON) 7 set(LLD_BUILT_STANDALONE TRUE) 8 9 find_program(LLVM_CONFIG_PATH "llvm-config" DOC "Path to llvm-config binary") 10 if(NOT LLVM_CONFIG_PATH) 11 message(FATAL_ERROR "llvm-config not found: specify LLVM_CONFIG_PATH") 12 endif() 13 14 execute_process(COMMAND "${LLVM_CONFIG_PATH}" 15 "--obj-root" 16 "--includedir" 17 "--cmakedir" 18 "--src-root" 19 RESULT_VARIABLE HAD_ERROR 20 OUTPUT_VARIABLE LLVM_CONFIG_OUTPUT 21 OUTPUT_STRIP_TRAILING_WHITESPACE) 22 if(HAD_ERROR) 23 message(FATAL_ERROR "llvm-config failed with status ${HAD_ERROR}") 24 endif() 25 26 string(REGEX REPLACE "[ \t]*[\r\n]+[ \t]*" ";" LLVM_CONFIG_OUTPUT "${LLVM_CONFIG_OUTPUT}") 27 28 list(GET LLVM_CONFIG_OUTPUT 0 OBJ_ROOT) 29 list(GET LLVM_CONFIG_OUTPUT 1 MAIN_INCLUDE_DIR) 30 list(GET LLVM_CONFIG_OUTPUT 2 LLVM_CMAKE_PATH) 31 list(GET LLVM_CONFIG_OUTPUT 3 MAIN_SRC_DIR) 32 33 set(LLVM_OBJ_ROOT ${OBJ_ROOT} CACHE PATH "path to LLVM build tree") 34 set(LLVM_MAIN_INCLUDE_DIR ${MAIN_INCLUDE_DIR} CACHE PATH "path to llvm/include") 35 set(LLVM_MAIN_SRC_DIR ${MAIN_SRC_DIR} CACHE PATH "Path to LLVM source tree") 36 37 file(TO_CMAKE_PATH ${LLVM_OBJ_ROOT} LLVM_BINARY_DIR) 38 39 if(NOT EXISTS "${LLVM_CMAKE_PATH}/LLVMConfig.cmake") 40 message(FATAL_ERROR "LLVMConfig.cmake not found") 41 endif() 42 include("${LLVM_CMAKE_PATH}/LLVMConfig.cmake") 43 44 list(APPEND CMAKE_MODULE_PATH "${LLVM_CMAKE_PATH}") 45 46 set(PACKAGE_VERSION "${LLVM_PACKAGE_VERSION}") 47 include_directories("${LLVM_BINARY_DIR}/include" ${LLVM_INCLUDE_DIRS}) 48 link_directories(${LLVM_LIBRARY_DIRS}) 49 50 set(LLVM_LIBRARY_OUTPUT_INTDIR ${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/lib${LLVM_LIBDIR_SUFFIX}) 51 set(LLVM_RUNTIME_OUTPUT_INTDIR ${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/bin) 52 find_program(LLVM_TABLEGEN_EXE "llvm-tblgen" ${LLVM_TOOLS_BINARY_DIR} NO_DEFAULT_PATH) 53 54 include(AddLLVM) 55 include(TableGen) 56 include(HandleLLVMOptions) 57 include(CheckAtomic) 58 59 if(LLVM_INCLUDE_TESTS) 60 find_package(Python3 COMPONENTS Interpreter) 61 if(NOT Python3_Interpreter_FOUND) 62 message(WARNING "Python3 not found, using python2 as a fallback") 63 find_package(Python2 COMPONENTS Interpreter REQUIRED) 64 if(Python2_VERSION VERSION_LESS 2.7) 65 message(SEND_ERROR "Python 2.7 or newer is required") 66 endif() 67 68 # Treat python2 as python3 69 add_executable(Python3::Interpreter IMPORTED) 70 set_target_properties(Python3::Interpreter PROPERTIES 71 IMPORTED_LOCATION ${Python2_EXECUTABLE}) 72 set(Python3_EXECUTABLE ${Python2_EXECUTABLE}) 73 endif() 74 75 # Check prebuilt llvm/utils. 76 if(EXISTS ${LLVM_TOOLS_BINARY_DIR}/FileCheck${CMAKE_EXECUTABLE_SUFFIX} 77 AND EXISTS ${LLVM_TOOLS_BINARY_DIR}/not${CMAKE_EXECUTABLE_SUFFIX}) 78 set(LLVM_UTILS_PROVIDED ON) 79 endif() 80 81 if(EXISTS ${LLVM_MAIN_SRC_DIR}/utils/lit/lit.py) 82 # Note: path not really used, except for checking if lit was found 83 set(LLVM_LIT ${LLVM_MAIN_SRC_DIR}/utils/lit/lit.py) 84 if(NOT LLVM_UTILS_PROVIDED) 85 add_subdirectory(${LLVM_MAIN_SRC_DIR}/utils/FileCheck utils/FileCheck) 86 add_subdirectory(${LLVM_MAIN_SRC_DIR}/utils/not utils/not) 87 set(LLVM_UTILS_PROVIDED ON) 88 set(LLD_TEST_DEPS FileCheck not) 89 endif() 90 set(UNITTEST_DIR ${LLVM_MAIN_SRC_DIR}/utils/unittest) 91 if(EXISTS ${UNITTEST_DIR}/googletest/include/gtest/gtest.h 92 AND NOT EXISTS ${LLVM_LIBRARY_DIR}/${CMAKE_STATIC_LIBRARY_PREFIX}gtest${CMAKE_STATIC_LIBRARY_SUFFIX} 93 AND EXISTS ${UNITTEST_DIR}/CMakeLists.txt) 94 add_subdirectory(${UNITTEST_DIR} utils/unittest) 95 endif() 96 else() 97 # Seek installed Lit. 98 find_program(LLVM_LIT 99 NAMES llvm-lit lit.py lit 100 PATHS "${LLVM_MAIN_SRC_DIR}/utils/lit" 101 DOC "Path to lit.py") 102 endif() 103 104 if(LLVM_LIT) 105 # Define the default arguments to use with 'lit', and an option for the user 106 # to override. 107 set(LIT_ARGS_DEFAULT "-sv") 108 if (MSVC OR XCODE) 109 set(LIT_ARGS_DEFAULT "${LIT_ARGS_DEFAULT} --no-progress-bar") 110 endif() 111 set(LLVM_LIT_ARGS "${LIT_ARGS_DEFAULT}" CACHE STRING "Default options for lit") 112 113 # On Win32 hosts, provide an option to specify the path to the GnuWin32 tools. 114 if(WIN32 AND NOT CYGWIN) 115 set(LLVM_LIT_TOOLS_DIR "" CACHE PATH "Path to GnuWin32 tools") 116 endif() 117 else() 118 set(LLVM_INCLUDE_TESTS OFF) 119 endif() 120 endif() 121endif() 122 123set(LLD_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}) 124set(LLD_INCLUDE_DIR ${LLD_SOURCE_DIR}/include ) 125set(LLD_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR}) 126 127set(LLD_VENDOR ${PACKAGE_VENDOR} CACHE STRING 128 "Vendor-specific text for showing with version information.") 129 130if(LLD_VENDOR) 131 add_definitions(-DLLD_VENDOR="${LLD_VENDOR}") 132endif() 133 134# Compute the LLD version from the LLVM version. 135string(REGEX MATCH "[0-9]+\\.[0-9]+(\\.[0-9]+)?" LLD_VERSION 136 ${PACKAGE_VERSION}) 137message(STATUS "LLD version: ${LLD_VERSION}") 138 139string(REGEX REPLACE "([0-9]+)\\.[0-9]+(\\.[0-9]+)?" "\\1" LLD_VERSION_MAJOR 140 ${LLD_VERSION}) 141string(REGEX REPLACE "[0-9]+\\.([0-9]+)(\\.[0-9]+)?" "\\1" LLD_VERSION_MINOR 142 ${LLD_VERSION}) 143 144# Configure the Version.inc file. 145configure_file( 146 ${CMAKE_CURRENT_SOURCE_DIR}/include/lld/Common/Version.inc.in 147 ${CMAKE_CURRENT_BINARY_DIR}/include/lld/Common/Version.inc) 148 149 150if (CMAKE_SOURCE_DIR STREQUAL CMAKE_BINARY_DIR) 151 message(FATAL_ERROR "In-source builds are not allowed. CMake would overwrite " 152"the makefiles distributed with LLVM. Please create a directory and run cmake " 153"from there, passing the path to this source directory as the last argument. " 154"This process created the file `CMakeCache.txt' and the directory " 155"`CMakeFiles'. Please delete them.") 156endif() 157 158list (APPEND CMAKE_MODULE_PATH "${LLD_SOURCE_DIR}/cmake/modules") 159 160include(AddLLD) 161 162option(LLD_USE_VTUNE 163 "Enable VTune user task tracking." 164 OFF) 165if (LLD_USE_VTUNE) 166 find_package(VTune) 167 if (VTUNE_FOUND) 168 include_directories(${VTune_INCLUDE_DIRS}) 169 list(APPEND LLVM_COMMON_LIBS ${VTune_LIBRARIES}) 170 add_definitions(-DLLD_HAS_VTUNE) 171 endif() 172endif() 173 174option(LLD_BUILD_TOOLS 175 "Build the lld tools. If OFF, just generate build targets." ON) 176 177option(LLD_DEFAULT_LD_LLD_IS_MINGW 178 "Use MinGW as the default backend for ld.lld. If OFF, ELF will be used." OFF) 179if (LLD_DEFAULT_LD_LLD_IS_MINGW) 180 add_definitions("-DLLD_DEFAULT_LD_LLD_IS_MINGW=1") 181endif() 182 183if (MSVC) 184 add_definitions(-wd4530) # Suppress 'warning C4530: C++ exception handler used, but unwind semantics are not enabled.' 185 add_definitions(-wd4062) # Suppress 'warning C4062: enumerator X in switch of enum Y is not handled' from system header. 186endif() 187 188include_directories(BEFORE 189 ${CMAKE_CURRENT_BINARY_DIR}/include 190 ${CMAKE_CURRENT_SOURCE_DIR}/include 191 ) 192 193if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY) 194 install(DIRECTORY include/ 195 DESTINATION include 196 FILES_MATCHING 197 PATTERN "*.h" 198 ) 199endif() 200 201add_subdirectory(Common) 202add_subdirectory(lib) 203add_subdirectory(tools/lld) 204 205if (LLVM_INCLUDE_TESTS) 206 add_subdirectory(test) 207 add_subdirectory(unittests) 208endif() 209 210add_subdirectory(docs) 211add_subdirectory(COFF) 212add_subdirectory(ELF) 213add_subdirectory(MachO) 214add_subdirectory(MinGW) 215add_subdirectory(wasm) 216 217add_subdirectory(cmake/modules) 218