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194 lines
6.4 KiB
194 lines
6.4 KiB
4 months ago
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include(ExternalProject)
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# llvm_ExternalProject_BuildCmd(out_var target)
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# Utility function for constructing command lines for external project targets
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function(llvm_ExternalProject_BuildCmd out_var target bin_dir)
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if (CMAKE_GENERATOR MATCHES "Make")
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# Use special command for Makefiles to support parallelism.
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set(${out_var} "$(MAKE)" "-C" "${BINARY_DIR}" "${target}" PARENT_SCOPE)
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else()
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set(${out_var} ${CMAKE_COMMAND} --build ${bin_dir} --target ${target}
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--config $<CONFIGURATION> PARENT_SCOPE)
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endif()
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endfunction()
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# llvm_ExternalProject_Add(name source_dir ...
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# USE_TOOLCHAIN
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# Use just-built tools (see TOOLCHAIN_TOOLS)
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# EXCLUDE_FROM_ALL
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# Exclude this project from the all target
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# NO_INSTALL
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# Don't generate install targets for this project
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# ALWAYS_CLEAN
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# Always clean the sub-project before building
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# CMAKE_ARGS arguments...
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# Optional cmake arguments to pass when configuring the project
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# TOOLCHAIN_TOOLS targets...
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# Targets for toolchain tools (defaults to clang;lld)
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# DEPENDS targets...
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# Targets that this project depends on
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# EXTRA_TARGETS targets...
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# Extra targets in the subproject to generate targets for
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# PASSTHROUGH_PREFIXES prefix...
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# Extra variable prefixes (name is always included) to pass down
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# )
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function(llvm_ExternalProject_Add name source_dir)
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cmake_parse_arguments(ARG
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"USE_TOOLCHAIN;EXCLUDE_FROM_ALL;NO_INSTALL;ALWAYS_CLEAN"
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"SOURCE_DIR"
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"CMAKE_ARGS;TOOLCHAIN_TOOLS;RUNTIME_LIBRARIES;DEPENDS;EXTRA_TARGETS;PASSTHROUGH_PREFIXES"
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${ARGN})
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canonicalize_tool_name(${name} nameCanon)
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if(NOT ARG_TOOLCHAIN_TOOLS)
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set(ARG_TOOLCHAIN_TOOLS clang lld)
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endif()
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foreach(tool ${ARG_TOOLCHAIN_TOOLS})
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if(TARGET ${tool})
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list(APPEND TOOLCHAIN_TOOLS ${tool})
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list(APPEND TOOLCHAIN_BINS $<TARGET_FILE:${tool}>)
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endif()
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endforeach()
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if(NOT ARG_RUNTIME_LIBRARIES)
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set(ARG_RUNTIME_LIBRARIES compiler-rt libcxx)
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endif()
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foreach(lib ${ARG_RUNTIME_LIBRARIES})
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if(TARGET ${lib})
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list(APPEND RUNTIME_LIBRARIES ${lib})
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endif()
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endforeach()
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if(ARG_ALWAYS_CLEAN)
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set(always_clean clean)
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endif()
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list(FIND TOOLCHAIN_TOOLS clang FOUND_CLANG)
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if(FOUND_CLANG GREATER -1)
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set(CLANG_IN_TOOLCHAIN On)
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endif()
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if(RUNTIME_LIBRARIES AND CLANG_IN_TOOLCHAIN)
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list(APPEND TOOLCHAIN_BINS ${RUNTIME_LIBRARIES})
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endif()
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set(STAMP_DIR ${CMAKE_CURRENT_BINARY_DIR}/${name}-stamps/)
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set(BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR}/${name}-bins/)
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add_custom_target(${name}-clear
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COMMAND ${CMAKE_COMMAND} -E remove_directory ${BINARY_DIR}
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COMMAND ${CMAKE_COMMAND} -E remove_directory ${STAMP_DIR}
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COMMENT "Clobbering ${name} build and stamp directories"
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USES_TERMINAL
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)
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# Find all variables that start with a prefix and propagate them through
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get_cmake_property(variableNames VARIABLES)
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list(APPEND ARG_PASSTHROUGH_PREFIXES ${nameCanon})
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foreach(prefix ${ARG_PASSTHROUGH_PREFIXES})
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foreach(variableName ${variableNames})
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if(variableName MATCHES "^${prefix}")
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string(REPLACE ";" "\;" value "${${variableName}}")
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list(APPEND PASSTHROUGH_VARIABLES
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-D${variableName}=${value})
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endif()
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endforeach()
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endforeach()
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if(ARG_USE_TOOLCHAIN)
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if(CLANG_IN_TOOLCHAIN)
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set(compiler_args -DCMAKE_C_COMPILER=${LLVM_RUNTIME_OUTPUT_INTDIR}/clang
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-DCMAKE_CXX_COMPILER=${LLVM_RUNTIME_OUTPUT_INTDIR}/clang++)
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endif()
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list(APPEND ARG_DEPENDS ${TOOLCHAIN_TOOLS})
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endif()
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add_custom_command(
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OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${name}-clobber-stamp
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DEPENDS ${ARG_DEPENDS}
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COMMAND ${CMAKE_COMMAND} -E touch ${BINARY_DIR}/CMakeCache.txt
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COMMAND ${CMAKE_COMMAND} -E touch ${STAMP_DIR}/${name}-mkdir
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COMMAND ${CMAKE_COMMAND} -E touch ${CMAKE_CURRENT_BINARY_DIR}/${name}-clobber-stamp
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COMMENT "Clobbering bootstrap build and stamp directories"
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)
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add_custom_target(${name}-clobber
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DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${name}-clobber-stamp)
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if(ARG_EXCLUDE_FROM_ALL)
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set(exclude EXCLUDE_FROM_ALL 1)
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endif()
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ExternalProject_Add(${name}
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DEPENDS ${ARG_DEPENDS}
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${name}-clobber
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PREFIX ${CMAKE_BINARY_DIR}/projects/${name}
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SOURCE_DIR ${source_dir}
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STAMP_DIR ${STAMP_DIR}
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BINARY_DIR ${BINARY_DIR}
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${exclude}
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CMAKE_ARGS ${${nameCanon}_CMAKE_ARGS}
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${compiler_args}
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-DCMAKE_INSTALL_PREFIX=${CMAKE_INSTALL_PREFIX}
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-DLLVM_BINARY_DIR=${PROJECT_BINARY_DIR}
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-DLLVM_CONFIG_PATH=$<TARGET_FILE:llvm-config>
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-DLLVM_ENABLE_WERROR=${LLVM_ENABLE_WERROR}
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-DPACKAGE_VERSION=${PACKAGE_VERSION}
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-DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}
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-DCMAKE_MAKE_PROGRAM=${CMAKE_MAKE_PROGRAM}
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${ARG_CMAKE_ARGS}
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${PASSTHROUGH_VARIABLES}
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INSTALL_COMMAND ""
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STEP_TARGETS configure build
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BUILD_ALWAYS 1
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USES_TERMINAL_CONFIGURE 1
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USES_TERMINAL_BUILD 1
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USES_TERMINAL_INSTALL 1
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)
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if(ARG_USE_TOOLCHAIN)
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set(force_deps DEPENDS ${TOOLCHAIN_BINS})
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endif()
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llvm_ExternalProject_BuildCmd(run_clean clean ${BINARY_DIR})
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ExternalProject_Add_Step(${name} clean
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COMMAND ${run_clean}
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COMMENT "Cleaning ${name}..."
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DEPENDEES configure
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${force_deps}
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WORKING_DIRECTORY ${BINARY_DIR}
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EXCLUDE_FROM_MAIN 1
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USES_TERMINAL 1
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)
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ExternalProject_Add_StepTargets(${name} clean)
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if(ARG_USE_TOOLCHAIN)
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add_dependencies(${name}-clean ${name}-clobber)
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set_target_properties(${name}-clean PROPERTIES
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SOURCES ${CMAKE_CURRENT_BINARY_DIR}/${name}-clobber-stamp)
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endif()
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if(NOT ARG_NO_INSTALL)
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install(CODE "execute_process\(COMMAND \${CMAKE_COMMAND} -DCMAKE_INSTALL_PREFIX=\${CMAKE_INSTALL_PREFIX} -P ${BINARY_DIR}/cmake_install.cmake \)"
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COMPONENT ${name})
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add_custom_target(install-${name}
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DEPENDS ${name}
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COMMAND "${CMAKE_COMMAND}"
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-DCMAKE_INSTALL_COMPONENT=${name}
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-P "${CMAKE_BINARY_DIR}/cmake_install.cmake"
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USES_TERMINAL)
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endif()
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# Add top-level targets
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foreach(target ${ARG_EXTRA_TARGETS})
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llvm_ExternalProject_BuildCmd(build_runtime_cmd ${target} ${BINARY_DIR})
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add_custom_target(${target}
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COMMAND ${build_runtime_cmd}
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DEPENDS ${name}-configure
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WORKING_DIRECTORY ${BINARY_DIR}
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VERBATIM
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USES_TERMINAL)
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endforeach()
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endfunction()
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