| # This file handles building LLVM runtime sub-projects. |
| |
| # Runtimes are different from tools or other drop-in projects because runtimes |
| # should be built with the LLVM toolchain from the build directory. This file is |
| # a first step to formalizing runtime build interfaces. |
| |
| # In the current state this file only works with compiler-rt, other runtimes |
| # will work as the runtime build interface standardizes. |
| |
| # Find all subdirectories containing CMake projects |
| file(GLOB entries *) |
| foreach(entry ${entries}) |
| if(IS_DIRECTORY ${entry} AND EXISTS ${entry}/CMakeLists.txt) |
| list(APPEND runtimes ${entry}) |
| endif() |
| endforeach() |
| |
| # If this file is acting as a top-level CMake invocation, this code path is |
| # triggered by the external project call for the runtimes target below. |
| if(${CMAKE_SOURCE_DIR} STREQUAL ${CMAKE_CURRENT_SOURCE_DIR}) |
| |
| function(runtime_register_component name) |
| set_property(GLOBAL APPEND PROPERTY SUB_COMPONENTS ${name}) |
| endfunction() |
| |
| cmake_minimum_required(VERSION 3.4.3) |
| |
| # Add the root project's CMake modules, and the LLVM build's modules to the |
| # CMake module path. |
| list(INSERT CMAKE_MODULE_PATH 0 |
| "${CMAKE_CURRENT_SOURCE_DIR}/../cmake" |
| "${CMAKE_CURRENT_SOURCE_DIR}/../cmake/Modules" |
| "${LLVM_BINARY_DIR}/lib/cmake/llvm" |
| ) |
| |
| # Some of the runtimes will conditionally use the compiler-rt sanitizers |
| # to make this work smoothly we ensure that compiler-rt is added first in |
| # the list of sub-projects. This allows other sub-projects to have checks |
| # like `if(TARGET asan)` to enable building with asan. |
| foreach(entry ${runtimes}) |
| if("${entry}" MATCHES "compiler-rt") |
| set(compiler_rt_path ${entry}) |
| break() |
| endif() |
| endforeach() |
| if(compiler_rt_path) |
| list(REMOVE_ITEM runtimes ${compiler_rt_path}) |
| list(INSERT runtimes 0 ${compiler_rt_path}) |
| endif() |
| |
| # LLVMConfig.cmake contains a bunch of CMake variables from the LLVM build. |
| # This file is installed as part of LLVM distributions, so this can be used |
| # either from a build directory or an installed LLVM. |
| include(LLVMConfig) |
| |
| # Setting these variables will allow the sub-build to put their outputs into |
| # the library and bin directories of the top-level build. |
| set(LLVM_LIBRARY_OUTPUT_INTDIR ${LLVM_LIBRARY_DIR}) |
| set(LLVM_RUNTIME_OUTPUT_INTDIR ${LLVM_TOOLS_BINARY_DIR}) |
| |
| # This variable makes sure that e.g. llvm-lit is found. |
| set(LLVM_MAIN_SRC_DIR ${LLVM_BUILD_MAIN_SRC_DIR}) |
| |
| # Handle common options used by all runtimes. |
| include(AddLLVM) |
| include(HandleLLVMOptions) |
| |
| foreach(entry ${runtimes}) |
| get_filename_component(projName ${entry} NAME) |
| |
| # TODO: Clean this up as part of an interface standardization |
| string(REPLACE "-" "_" canon_name ${projName}) |
| string(TOUPPER ${canon_name} canon_name) |
| # The subdirectories need to treat this as standalone builds |
| set(${canon_name}_STANDALONE_BUILD On) |
| |
| # Setting a variable to let sub-projects detect which other projects |
| # will be included under here. |
| set(HAVE_${canon_name} On) |
| endforeach() |
| |
| # We do this in two loops so that HAVE_* is set for each runtime before the |
| # other runtimes are added. |
| foreach(entry ${runtimes}) |
| get_filename_component(projName ${entry} NAME) |
| |
| # Between each sub-project we want to cache and clear the LIT properties |
| set_property(GLOBAL PROPERTY LLVM_LIT_TESTSUITES) |
| set_property(GLOBAL PROPERTY LLVM_LIT_PARAMS) |
| set_property(GLOBAL PROPERTY LLVM_LIT_DEPENDS) |
| set_property(GLOBAL PROPERTY LLVM_LIT_EXTRA_ARGS) |
| |
| add_subdirectory(${projName}) |
| |
| get_property(LLVM_LIT_TESTSUITES GLOBAL PROPERTY LLVM_LIT_TESTSUITES) |
| get_property(LLVM_LIT_PARAMS GLOBAL PROPERTY LLVM_LIT_PARAMS) |
| get_property(LLVM_LIT_DEPENDS GLOBAL PROPERTY LLVM_LIT_DEPENDS) |
| get_property(LLVM_LIT_EXTRA_ARGS GLOBAL PROPERTY LLVM_LIT_EXTRA_ARGS) |
| |
| list(APPEND RUNTIMES_LIT_TESTSUITES ${LLVM_LIT_TESTSUITES}) |
| list(APPEND RUNTIMES_LIT_PARAMS ${LLVM_LIT_PARAMS}) |
| list(APPEND RUNTIMES_LIT_DEPENDS ${LLVM_LIT_DEPENDS}) |
| list(APPEND RUNTIMES_LIT_EXTRA_ARGS ${LLVM_LIT_EXTRA_ARGS}) |
| endforeach() |
| |
| if(LLVM_INCLUDE_TESTS) |
| # Add a global check rule now that all subdirectories have been traversed |
| # and we know the total set of lit testsuites. |
| |
| add_lit_target(check-runtimes |
| "Running all regression tests" |
| ${RUNTIMES_LIT_TESTSUITES} |
| PARAMS ${RUNTIMES_LIT_PARAMS} |
| DEPENDS ${RUNTIMES_LIT_DEPENDS} |
| ARGS ${RUNTIMES_LIT_EXTRA_ARGS} |
| ) |
| add_custom_target(runtimes-test-depends DEPENDS ${RUNTIMES_LIT_DEPENDS}) |
| endif() |
| |
| get_property(SUB_COMPONENTS GLOBAL PROPERTY SUB_COMPONENTS) |
| if(SUB_COMPONENTS) |
| list(REMOVE_DUPLICATES SUB_COMPONENTS) |
| foreach(component ${SUB_COMPONENTS}) |
| if(NOT TARGET ${component}) |
| message(SEND_ERROR "Missing target for runtime component ${component}!") |
| continue() |
| endif() |
| if(LLVM_INCLUDE_TESTS AND NOT TARGET check-${component}) |
| message(SEND_ERROR "Missing check target for runtime component ${component}!") |
| continue() |
| endif() |
| |
| if(TARGET install-${component}) |
| list(APPEND SUB_INSTALL_TARGETS install-${component}) |
| endif() |
| endforeach() |
| |
| configure_file( |
| ${CMAKE_CURRENT_SOURCE_DIR}/Components.cmake.in |
| ${LLVM_BINARY_DIR}/runtimes/Components.cmake) |
| endif() |
| |
| else() # if this is included from LLVM's CMake |
| include(${LLVM_BINARY_DIR}/runtimes/Components.cmake OPTIONAL) |
| set_property(DIRECTORY APPEND PROPERTY CMAKE_CONFIGURE_DEPENDS ${LLVM_BINARY_DIR}/runtimes/Components.cmake) |
| include(LLVMExternalProjectUtils) |
| |
| # If compiler-rt is present we need to build the builtin libraries first. This |
| # is required because the other runtimes need the builtin libraries present |
| # before the just-built compiler can pass the configuration tests. |
| if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/compiler-rt) |
| if(APPLE OR NOT LLVM_BUILTIN_TARGETS) |
| llvm_ExternalProject_Add(builtins |
| ${CMAKE_CURRENT_SOURCE_DIR}/compiler-rt/lib/builtins |
| CMAKE_ARGS -DLLVM_LIBRARY_OUTPUT_INTDIR=${LLVM_LIBRARY_DIR} |
| -DLLVM_RUNTIME_OUTPUT_INTDIR=${LLVM_TOOLS_BINARY_DIR} |
| -DCMAKE_C_COMPILER_TARGET=${TARGET_TRIPLE} |
| -DCMAKE_ASM_COMPILER_TARGET=${TARGET_TRIPLE} |
| PASSTHROUGH_PREFIXES COMPILER_RT |
| USE_TOOLCHAIN) |
| else() |
| get_cmake_property(variableNames VARIABLES) |
| add_custom_target(builtins) |
| foreach(target ${LLVM_BUILTIN_TARGETS}) |
| foreach(variableName ${variableNames}) |
| if(variableName MATCHES "^BUILTINS_${target}") |
| string(REPLACE "BUILTINS_${target}_" "" new_name ${variableName}) |
| list(APPEND ${target}_extra_args "-D${new_name}=${${variableName}}") |
| endif() |
| endforeach() |
| llvm_ExternalProject_Add(builtins-${target} |
| ${CMAKE_CURRENT_SOURCE_DIR}/compiler-rt/lib/builtins |
| CMAKE_ARGS -DLLVM_LIBRARY_OUTPUT_INTDIR=${LLVM_LIBRARY_DIR} |
| -DLLVM_RUNTIME_OUTPUT_INTDIR=${LLVM_TOOLS_BINARY_DIR} |
| -DCMAKE_C_COMPILER_TARGET=${target} |
| -DCMAKE_ASM_COMPILER_TARGET=${target} |
| -DCMAKE_C_COMPILER_WORKS=On |
| -DCMAKE_ASM_COMPILER_WORKS=On |
| -DCOMPILER_RT_DEFAULT_TARGET_ONLY=On |
| ${${target}_extra_args} |
| PASSTHROUGH_PREFIXES COMPILER_RT |
| USE_TOOLCHAIN) |
| add_dependencies(builtins builtins-${target}) |
| endforeach() |
| endif() |
| set(deps builtins) |
| # We don't need to depend on the builtins if we're building instrumented |
| # because the next stage will use the same compiler used to build this stage. |
| if(NOT LLVM_BUILD_INSTRUMENTED AND CLANG_ENABLE_BOOTSTRAP) |
| add_dependencies(clang-bootstrap-deps builtins) |
| endif() |
| endif() |
| |
| # We create a list the names of all the runtime projects in all uppercase and |
| # with dashes turned to underscores. This gives us the CMake variable prefixes |
| # for all variables that will apply to runtimes. |
| foreach(entry ${runtimes}) |
| get_filename_component(projName ${entry} NAME) |
| string(REPLACE "-" "_" canon_name ${projName}) |
| string(TOUPPER ${canon_name} canon_name) |
| list(APPEND prefixes ${canon_name}) |
| |
| string(FIND ${projName} "lib" LIB_IDX) |
| if(LIB_IDX EQUAL 0) |
| string(SUBSTRING ${projName} 3 -1 projName) |
| endif() |
| list(APPEND runtime_names ${projName}) |
| endforeach() |
| |
| if(runtimes) |
| |
| foreach(runtime_name ${runtime_names}) |
| list(APPEND extra_targets |
| ${runtime_name} |
| install-${runtime_name} |
| check-${runtime_name}) |
| endforeach() |
| |
| if(LLVM_INCLUDE_TESTS) |
| set(test_targets runtimes-test-depends check-runtimes) |
| foreach(component ${SUB_COMPONENTS}) |
| list(APPEND SUB_COMPONENT_CHECK_TARGETS check-${component}) |
| endforeach() |
| endif() |
| |
| # Create a runtimes target that uses this file as its top-level CMake file. |
| # The runtimes target is a configuration of all the runtime libraries |
| # together in a single CMake invocaiton. |
| llvm_ExternalProject_Add(runtimes |
| ${CMAKE_CURRENT_SOURCE_DIR} |
| DEPENDS ${deps} |
| # Builtins were built separately above |
| CMAKE_ARGS -DCOMPILER_RT_BUILD_BUILTINS=Off |
| -DLLVM_INCLUDE_TESTS=${LLVM_INCLUDE_TESTS} |
| PASSTHROUGH_PREFIXES ${prefixes} |
| EXTRA_TARGETS ${extra_targets} |
| ${test_targets} |
| ${SUB_COMPONENTS} |
| ${SUB_COMPONENT_CHECK_TARGETS} |
| ${SUB_INSTALL_TARGETS} |
| USE_TOOLCHAIN) |
| |
| # TODO: This is a hack needed because the libcxx headers are copied into the |
| # build directory during configuration. Without that step the clang in the |
| # build directory cannot find the C++ headers in certain configurations. |
| # I need to build a mechanism for runtime projects to provide CMake code |
| # that executes at LLVM configuration time to handle this case. |
| if(NOT LLVM_BUILD_INSTRUMENTED AND CLANG_ENABLE_BOOTSTRAP) |
| add_dependencies(clang-bootstrap-deps runtimes-configure) |
| endif() |
| |
| if(LLVM_INCLUDE_TESTS) |
| set_property(GLOBAL APPEND PROPERTY LLVM_ADDITIONAL_TEST_DEPENDS runtimes-test-depends) |
| set_property(GLOBAL APPEND PROPERTY LLVM_ADDITIONAL_TEST_TARGETS check-runtimes) |
| endif() |
| endif() |
| endif() |
