1cmake_minimum_required(VERSION 3.13.4) 2 3if(POLICY CMP0068) 4 cmake_policy(SET CMP0068 NEW) 5 set(CMAKE_BUILD_WITH_INSTALL_NAME_DIR ON) 6endif() 7 8if(POLICY CMP0075) 9 cmake_policy(SET CMP0075 NEW) 10endif() 11 12if(POLICY CMP0077) 13 cmake_policy(SET CMP0077 NEW) 14endif() 15 16project(LLVM_RUNTIMES) 17 18find_package(Python3 COMPONENTS Interpreter) 19if(NOT Python3_Interpreter_FOUND) 20 message(WARNING "Python3 not found, using python2 as a fallback") 21 find_package(Python2 COMPONENTS Interpreter REQUIRED) 22 if(Python2_VERSION VERSION_LESS 2.7) 23 message(SEND_ERROR "Python 2.7 or newer is required") 24 endif() 25 26 # Treat python2 as python3 27 add_executable(Python3::Interpreter IMPORTED) 28 set_target_properties(Python3::Interpreter PROPERTIES 29 IMPORTED_LOCATION ${Python2_EXECUTABLE}) 30 set(Python3_EXECUTABLE ${Python2_EXECUTABLE}) 31endif() 32 33# This needs to be set before we add any Lit target for `add_lit_target` to 34# select the right Lit to run the tests. 35set(LLVM_LIT_OUTPUT_DIR "${CMAKE_CURRENT_BINARY_DIR}/bin") 36 37# Automatically define a few variables that are normally set globally by LLVM. 38# This is to keep some amount of similarity between the global LLVM build and 39# this minimal build. 40set(LLVM_UMBRELLA_ROOT "${CMAKE_CURRENT_SOURCE_DIR}/../../../..") 41list(APPEND CMAKE_MODULE_PATH "${LLVM_UMBRELLA_ROOT}/libcxx/cmake/Modules") 42include(HandleOutOfTreeLLVM) 43 44# Override the external Lit to make sure we use the one we generate below. 45# TODO: We can remove this once we start relying on the in-tree version of Lit 46# in HandleOutOfTreeLLVM. 47set(LLVM_DEFAULT_EXTERNAL_LIT "") 48 49# Include individual runtime projects 50set(LLVM_ENABLE_PROJECTS "" CACHE STRING "Semicolon-separated list of runtimes to build.") 51foreach(project IN LISTS LLVM_ENABLE_PROJECTS) 52 add_subdirectory("${LLVM_UMBRELLA_ROOT}/${project}" "${CMAKE_CURRENT_BINARY_DIR}/${project}") 53endforeach() 54 55# Generate the llvm-lit wrapper, needed for testing. This must be done after 56# the projects have been added, since the wraper is only generated correctly 57# if the test suites have already been added with add_lit_target. 58add_subdirectory("${LLVM_UMBRELLA_ROOT}/llvm/utils/llvm-lit" "${CMAKE_CURRENT_BINARY_DIR}/llvm-lit") 59