+include(ExternalProject)
+
+# llvm_ExternalProject_BuildCmd(out_var target)
+# Utility function for constructing command lines for external project targets
+function(llvm_ExternalProject_BuildCmd out_var target)
+ if (CMAKE_GENERATOR MATCHES "Make")
+ # Use special command for Makefiles to support parallelism.
+ set(${out_var} "$(MAKE)" "${target}" PARENT_SCOPE)
+ else()
+ set(${out_var} ${CMAKE_COMMAND} --build . --target ${target}
+ --config $<CONFIGURATION> PARENT_SCOPE)
+ endif()
+endfunction()
+
+# llvm_ExternalProject_Add(name source_dir ...
+# USE_TOOLCHAIN
+# Use just-built tools (see TOOLCHAIN_TOOLS)
+# EXCLUDE_FROM_ALL
+# Exclude this project from the all target
+# NO_INSTALL
+# Don't generate install targets for this project
+# CMAKE_ARGS arguments...
+# Optional cmake arguments to pass when configuring the project
+# TOOLCHAIN_TOOLS targets...
+# Targets for toolchain tools (defaults to clang;lld)
+# DEPENDS targets...
+# Targets that this project depends on
+# EXTRA_TARGETS targets...
+# Extra targets in the subproject to generate targets for
+# )
+function(llvm_ExternalProject_Add name source_dir)
+ cmake_parse_arguments(ARG "USE_TOOLCHAIN;EXCLUDE_FROM_ALL;NO_INSTALL"
+ "SOURCE_DIR"
+ "CMAKE_ARGS;TOOLCHAIN_TOOLS;RUNTIME_LIBRARIES;DEPENDS;EXTRA_TARGETS" ${ARGN})
+ canonicalize_tool_name(${name} nameCanon)
+ if(NOT ARG_TOOLCHAIN_TOOLS)
+ set(ARG_TOOLCHAIN_TOOLS clang lld)
+ endif()
+ foreach(tool ${ARG_TOOLCHAIN_TOOLS})
+ if(TARGET ${tool})
+ list(APPEND TOOLCHAIN_TOOLS ${tool})
+ list(APPEND TOOLCHAIN_BINS $<TARGET_FILE:${tool}>)
+ endif()
+ endforeach()
+
+ if(NOT ARG_RUNTIME_LIBRARIES)
+ set(ARG_RUNTIME_LIBRARIES compiler-rt libcxx)
+ endif()
+ foreach(lib ${ARG_RUNTIME_LIBRARIES})
+ if(TARGET ${lib})
+ list(APPEND RUNTIME_LIBRARIES ${lib})
+ endif()
+ endforeach()
+
+ list(FIND TOOLCHAIN_TOOLS clang FOUND_CLANG)
+ if(FOUND_CLANG GREATER -1)
+ set(CLANG_IN_TOOLCHAIN On)
+ endif()
+
+ if(RUNTIME_LIBRARIES AND CLANG_IN_TOOLCHAIN)
+ list(APPEND TOOLCHAIN_BINS ${RUNTIME_LIBRARIES})
+ endif()
+
+ if(CMAKE_VERSION VERSION_GREATER 3.1.0)
+ set(cmake_3_1_EXCLUDE_FROM_ALL EXCLUDE_FROM_ALL 1)
+ endif()
+
+ if(CMAKE_VERSION VERSION_GREATER 3.3.20150708)
+ set(cmake_3_4_USES_TERMINAL_OPTIONS
+ USES_TERMINAL_CONFIGURE 1
+ USES_TERMINAL_BUILD 1
+ USES_TERMINAL_INSTALL 1
+ )
+ set(cmake_3_4_USES_TERMINAL USES_TERMINAL 1)
+ endif()
+
+ if(CMAKE_VERSION VERSION_GREATER 3.1.20141116)
+ set(cmake_3_2_USES_TERMINAL USES_TERMINAL)
+ endif()
+
+ set(STAMP_DIR ${CMAKE_CURRENT_BINARY_DIR}/${name}-stamps/)
+ set(BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR}/${name}-bins/)
+
+ add_custom_target(${name}-clear
+ COMMAND ${CMAKE_COMMAND} -E remove_directory ${BINARY_DIR}
+ COMMAND ${CMAKE_COMMAND} -E remove_directory ${STAMP_DIR}
+ COMMENT "Clobbering ${name} build and stamp directories"
+ ${cmake_3_2_USES_TERMINAL}
+ )
+
+ # Find all variables that start with COMPILER_RT and populate a variable with
+ # them.
+ get_cmake_property(variableNames VARIABLES)
+ foreach(varaibleName ${variableNames})
+ if(${varaibleName} MATCHES "^${nameCanon}")
+ list(APPEND PASSTHROUGH_VARIABLES
+ -D${varaibleName}=${${varaibleName}})
+ endif()
+ endforeach()
+
+ if(ARG_USE_TOOLCHAIN)
+ if(CLANG_IN_TOOLCHAIN)
+ set(compiler_args -DCMAKE_C_COMPILER=${LLVM_RUNTIME_OUTPUT_INTDIR}/clang
+ -DCMAKE_CXX_COMPILER=${LLVM_RUNTIME_OUTPUT_INTDIR}/clang++)
+ endif()
+ list(APPEND ARG_DEPENDS ${TOOLCHAIN_TOOLS})
+ endif()
+
+ add_custom_command(
+ OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${name}-clobber-stamp
+ DEPENDS ${ARG_DEPENDS}
+ COMMAND ${CMAKE_COMMAND} -E touch ${BINARY_DIR}/CMakeCache.txt
+ COMMAND ${CMAKE_COMMAND} -E touch ${STAMP_DIR}/${name}-mkdir
+ COMMAND ${CMAKE_COMMAND} -E touch ${CMAKE_CURRENT_BINARY_DIR}/${name}-clobber-stamp
+ COMMENT "Clobbering bootstrap build and stamp directories"
+ )
+
+ add_custom_target(${name}-clobber
+ DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${name}-clobber-stamp)
+
+ if(ARG_EXCLUDE_FROM_ALL)
+ set(exclude ${cmake_3_1_EXCLUDE_FROM_ALL})
+ endif()
+
+ ExternalProject_Add(${name}
+ DEPENDS ${ARG_DEPENDS}
+ ${name}-clobber
+ PREFIX ${CMAKE_BINARY_DIR}/projects/${name}
+ SOURCE_DIR ${source_dir}
+ STAMP_DIR ${STAMP_DIR}
+ BINARY_DIR ${BINARY_DIR}
+ ${exclude}
+ CMAKE_ARGS ${${nameCanon}_CMAKE_ARGS}
+ ${compiler_args}
+ -DCMAKE_INSTALL_PREFIX=${CMAKE_INSTALL_PREFIX}
+ ${ARG_CMAKE_ARGS}
+ ${PASSTHROUGH_VARIABLES}
+ INSTALL_COMMAND ""
+ STEP_TARGETS configure build
+ ${cmake_3_4_USES_TERMINAL_OPTIONS}
+ )
+
+ if(ARG_USE_TOOLCHAIN)
+ ExternalProject_Add_Step(${name} force-rebuild
+ COMMENT "Forcing rebuild becaues tools have changed"
+ DEPENDERS configure
+ DEPENDS ${TOOLCHAIN_BINS}
+ ${cmake_3_4_USES_TERMINAL} )
+ endif()
+
+ if(ARG_USE_TOOLCHAIN)
+ set(force_deps DEPENDS ${TOOLCHAIN_BINS})
+ endif()
+
+ llvm_ExternalProject_BuildCmd(run_clean clean)
+ ExternalProject_Add_Step(${name} clean
+ COMMAND ${run_clean}
+ COMMENT "Cleaning ${name}..."
+ DEPENDEES configure
+ ${force_deps}
+ WORKING_DIRECTORY ${BINARY_DIR}
+ ${cmake_3_4_USES_TERMINAL}
+ )
+ ExternalProject_Add_StepTargets(${name} clean)
+
+ if(ARG_USE_TOOLCHAIN)
+ add_dependencies(${name}-clean ${name}-clobber)
+ set_target_properties(${name}-clean PROPERTIES
+ SOURCES ${CMAKE_CURRENT_BINARY_DIR}/${name}-clobber-stamp)
+ endif()
+
+ if(NOT ARG_NO_INSTALL)
+ install(CODE "execute_process\(COMMAND \${CMAKE_COMMAND} -DCMAKE_INSTALL_PREFIX=\${CMAKE_INSTALL_PREFIX} -P ${BINARY_DIR}/cmake_install.cmake \)"
+ COMPONENT ${name})
+
+ add_custom_target(install-${name}
+ DEPENDS ${name}
+ COMMAND "${CMAKE_COMMAND}"
+ -DCMAKE_INSTALL_COMPONENT=${name}
+ -P "${CMAKE_BINARY_DIR}/cmake_install.cmake"
+ ${cmake_3_2_USES_TERMINAL})
+ endif()
+
+ # Add top-level targets
+ foreach(target ${ARG_EXTRA_TARGETS})
+ llvm_ExternalProject_BuildCmd(build_runtime_cmd ${target})
+ add_custom_target(${target}
+ COMMAND ${build_runtime_cmd}
+ DEPENDS ${name}-configure
+ WORKING_DIRECTORY ${BINARY_DIR}
+ VERBATIM
+ ${cmake_3_2_USES_TERMINAL})
+ endforeach()
+endfunction()
projects / oota-llvm.git / commitdiff