1include(AddLLVM) 2include(LLVMExternalProjectUtils) 3 4 5function(llvm_create_cross_target project_name target_name toolchain buildtype) 6 7 if(NOT DEFINED ${project_name}_${target_name}_BUILD) 8 set(${project_name}_${target_name}_BUILD 9 "${CMAKE_CURRENT_BINARY_DIR}/${target_name}") 10 set(${project_name}_${target_name}_BUILD 11 ${${project_name}_${target_name}_BUILD} PARENT_SCOPE) 12 message(STATUS "Setting native build dir to " ${${project_name}_${target_name}_BUILD}) 13 endif(NOT DEFINED ${project_name}_${target_name}_BUILD) 14 15 if (EXISTS ${LLVM_MAIN_SRC_DIR}/cmake/platforms/${toolchain}.cmake) 16 set(CROSS_TOOLCHAIN_FLAGS_INIT 17 -DCMAKE_TOOLCHAIN_FILE=\"${LLVM_MAIN_SRC_DIR}/cmake/platforms/${toolchain}.cmake\") 18 elseif (NOT CMAKE_CROSSCOMPILING) 19 set(CROSS_TOOLCHAIN_FLAGS_INIT 20 -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER} 21 -DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER} 22 ) 23 endif() 24 set(CROSS_TOOLCHAIN_FLAGS_${target_name} ${CROSS_TOOLCHAIN_FLAGS_INIT} 25 CACHE STRING "Toolchain configuration for ${target_name}") 26 27 # project specific version of the flags up above 28 set(CROSS_TOOLCHAIN_FLAGS_${project_name}_${target_name} "" 29 CACHE STRING "Toolchain configuration for ${project_name}_${target_name}") 30 31 if (buildtype) 32 set(build_type_flags "-DCMAKE_BUILD_TYPE=${buildtype}") 33 endif() 34 if (LLVM_USE_LINKER AND NOT CMAKE_CROSSCOMPILING) 35 set(linker_flag "-DLLVM_USE_LINKER=${LLVM_USE_LINKER}") 36 endif() 37 if (LLVM_EXTERNAL_CLANG_SOURCE_DIR) 38 # Propagate LLVM_EXTERNAL_CLANG_SOURCE_DIR so that clang-tblgen can be built 39 set(external_clang_dir "-DLLVM_EXTERNAL_CLANG_SOURCE_DIR=${LLVM_EXTERNAL_CLANG_SOURCE_DIR}") 40 endif() 41 42 add_custom_command(OUTPUT ${${project_name}_${target_name}_BUILD} 43 COMMAND ${CMAKE_COMMAND} -E make_directory ${${project_name}_${target_name}_BUILD} 44 COMMENT "Creating ${${project_name}_${target_name}_BUILD}...") 45 46 add_custom_target(CREATE_${project_name}_${target_name} 47 DEPENDS ${${project_name}_${target_name}_BUILD}) 48 get_subproject_title(subproject_title) 49 set_target_properties(CREATE_${project_name}_${target_name} PROPERTIES FOLDER "${subproject_title}/Native") 50 51 # Escape semicolons in the targets list so that cmake doesn't expand 52 # them to spaces. 53 string(REPLACE ";" "$<SEMICOLON>" targets_to_build_arg 54 "${LLVM_TARGETS_TO_BUILD}") 55 string(REPLACE ";" "$<SEMICOLON>" experimental_targets_to_build_arg 56 "${LLVM_EXPERIMENTAL_TARGETS_TO_BUILD}") 57 58 string(REPLACE ";" "$<SEMICOLON>" llvm_enable_projects_arg 59 "${LLVM_ENABLE_PROJECTS}") 60 string(REPLACE ";" "$<SEMICOLON>" llvm_external_projects_arg 61 "${LLVM_EXTERNAL_PROJECTS}") 62 string(REPLACE ";" "$<SEMICOLON>" llvm_enable_runtimes_arg 63 "${LLVM_ENABLE_RUNTIMES}") 64 65 set(external_project_source_dirs) 66 foreach(project ${LLVM_EXTERNAL_PROJECTS}) 67 canonicalize_tool_name(${project} name) 68 list(APPEND external_project_source_dirs 69 "-DLLVM_EXTERNAL_${name}_SOURCE_DIR=${LLVM_EXTERNAL_${name}_SOURCE_DIR}") 70 endforeach() 71 72 if("libc" IN_LIST LLVM_ENABLE_PROJECTS AND NOT LIBC_HDRGEN_EXE) 73 set(libc_flags -DLLVM_LIBC_FULL_BUILD=ON -DLIBC_HDRGEN_ONLY=ON) 74 if(MSVC) 75 # Due to some issues mentioned in llvm/projects/CMakeLists.txt, libc build is disabled by 76 # default in the cross target when building with MSVC compatible compilers on Windows. Add 77 # LLVM_FORCE_BUILD_RUNTIME to bypass this issue and force its building on Windows. 78 list(APPEND libc_flags -DLLVM_FORCE_BUILD_RUNTIME=ON) 79 endif() 80 endif() 81 82 add_custom_command(OUTPUT ${${project_name}_${target_name}_BUILD}/CMakeCache.txt 83 COMMAND ${CMAKE_COMMAND} -G "${CMAKE_GENERATOR}" 84 -DCMAKE_MAKE_PROGRAM="${CMAKE_MAKE_PROGRAM}" 85 -DCMAKE_C_COMPILER_LAUNCHER="${CMAKE_C_COMPILER_LAUNCHER}" 86 -DCMAKE_CXX_COMPILER_LAUNCHER="${CMAKE_CXX_COMPILER_LAUNCHER}" 87 ${CROSS_TOOLCHAIN_FLAGS_${target_name}} ${CMAKE_CURRENT_SOURCE_DIR} 88 ${CROSS_TOOLCHAIN_FLAGS_${project_name}_${target_name}} 89 -DLLVM_TARGET_IS_CROSSCOMPILE_HOST=TRUE 90 -DLLVM_TARGETS_TO_BUILD="${targets_to_build_arg}" 91 -DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD="${experimental_targets_to_build_arg}" 92 -DLLVM_DEFAULT_TARGET_TRIPLE="${LLVM_TARGET_TRIPLE}" 93 -DLLVM_TARGET_ARCH="${LLVM_TARGET_ARCH}" 94 -DLLVM_ENABLE_PROJECTS="${llvm_enable_projects_arg}" 95 -DLLVM_EXTERNAL_PROJECTS="${llvm_external_projects_arg}" 96 -DLLVM_ENABLE_RUNTIMES="${llvm_enable_runtimes_arg}" 97 ${external_project_source_dirs} 98 -DLLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN="${LLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN}" 99 -DLLVM_INCLUDE_BENCHMARKS=OFF 100 -DLLVM_INCLUDE_TESTS=OFF 101 ${build_type_flags} ${linker_flag} ${external_clang_dir} ${libc_flags} 102 ${ARGN} 103 WORKING_DIRECTORY ${${project_name}_${target_name}_BUILD} 104 DEPENDS CREATE_${project_name}_${target_name} 105 COMMENT "Configuring ${target_name} ${project_name}...") 106 107 add_custom_target(CONFIGURE_${project_name}_${target_name} 108 DEPENDS ${${project_name}_${target_name}_BUILD}/CMakeCache.txt) 109 get_subproject_title(subproject_title) 110 set_target_properties(CONFIGURE_${project_name}_${target_name} PROPERTIES FOLDER "${subproject_title}/Native") 111 112endfunction() 113 114function(get_native_tool_path target output_path_var) 115 if(CMAKE_CONFIGURATION_TYPES) 116 set(output_path "${${PROJECT_NAME}_NATIVE_BUILD}/Release/bin/${target}") 117 else() 118 set(output_path "${${PROJECT_NAME}_NATIVE_BUILD}/bin/${target}") 119 endif() 120 set(${output_path_var} ${output_path}${LLVM_HOST_EXECUTABLE_SUFFIX} PARENT_SCOPE) 121endfunction() 122 123# Sets up a native build for a tool, used e.g. for cross-compilation and 124# LLVM_OPTIMIZED_TABLEGEN. Always builds in Release. 125# - target: The target to build natively 126# - output_path_var: A variable name which receives the path to the built target 127# - DEPENDS: Any additional dependencies for the target 128function(build_native_tool target output_path_var) 129 cmake_parse_arguments(ARG "" "" "DEPENDS" ${ARGN}) 130 131 get_native_tool_path(${target} output_path) 132 133 # Make chain of preceding actions 134 if(CMAKE_GENERATOR MATCHES "Visual Studio") 135 get_property(host_targets GLOBAL PROPERTY ${PROJECT_NAME}_HOST_TARGETS) 136 set_property(GLOBAL APPEND PROPERTY ${PROJECT_NAME}_HOST_TARGETS ${output_path}) 137 endif() 138 139 llvm_ExternalProject_BuildCmd(build_cmd ${target} ${${PROJECT_NAME}_NATIVE_BUILD} 140 CONFIGURATION Release) 141 add_custom_command(OUTPUT "${output_path}" 142 COMMAND ${build_cmd} 143 DEPENDS CONFIGURE_${PROJECT_NAME}_NATIVE ${ARG_DEPENDS} ${host_targets} 144 WORKING_DIRECTORY "${${PROJECT_NAME}_NATIVE_BUILD}" 145 COMMENT "Building native ${target}..." 146 USES_TERMINAL) 147 set(${output_path_var} "${output_path}" PARENT_SCOPE) 148endfunction() 149