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In CMake dependencies can be filenames or targets, and targets can't be filenames. The Ninja generator handles filename dependencies because it generates targets for every output file from a command. For example: add_custom_command(OUTPUT foo.txt COMMAND touch foo.txt) With the Ninja generator this generates a target foo.txt, but with the Makefile generator it doesn't. This is probably because Ninja explicitly requires these hard dependency ties, and Make just behaves oddly in general. To fix this we need to make the tablegen actions depend on a target rather than a filename. llvm-svn: 235732
122 lines
4.7 KiB
CMake
122 lines
4.7 KiB
CMake
# LLVM_TARGET_DEFINITIONS must contain the name of the .td file to process.
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# Extra parameters for `tblgen' may come after `ofn' parameter.
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# Adds the name of the generated file to TABLEGEN_OUTPUT.
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function(tablegen project ofn)
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# Validate calling context.
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foreach(v
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${project}_TABLEGEN_EXE
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LLVM_MAIN_SRC_DIR
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LLVM_MAIN_INCLUDE_DIR
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)
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if(NOT ${v})
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message(FATAL_ERROR "${v} not set")
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endif()
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endforeach()
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file(GLOB local_tds "*.td")
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file(GLOB_RECURSE global_tds "${LLVM_MAIN_INCLUDE_DIR}/llvm/*.td")
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if (IS_ABSOLUTE ${LLVM_TARGET_DEFINITIONS})
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set(LLVM_TARGET_DEFINITIONS_ABSOLUTE ${LLVM_TARGET_DEFINITIONS})
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else()
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set(LLVM_TARGET_DEFINITIONS_ABSOLUTE
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${CMAKE_CURRENT_SOURCE_DIR}/${LLVM_TARGET_DEFINITIONS})
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endif()
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add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${ofn}.tmp
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# Generate tablegen output in a temporary file.
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COMMAND ${${project}_TABLEGEN_EXE} ${ARGN} -I ${CMAKE_CURRENT_SOURCE_DIR}
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-I ${LLVM_MAIN_SRC_DIR}/lib/Target -I ${LLVM_MAIN_INCLUDE_DIR}
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${LLVM_TARGET_DEFINITIONS_ABSOLUTE}
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-o ${CMAKE_CURRENT_BINARY_DIR}/${ofn}.tmp
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# The file in LLVM_TARGET_DEFINITIONS may be not in the current
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# directory and local_tds may not contain it, so we must
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# explicitly list it here:
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DEPENDS ${${project}_TABLEGEN_TARGET} ${local_tds} ${global_tds}
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${LLVM_TARGET_DEFINITIONS_ABSOLUTE}
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COMMENT "Building ${ofn}..."
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)
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add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${ofn}
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# Only update the real output file if there are any differences.
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# This prevents recompilation of all the files depending on it if there
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# aren't any.
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COMMAND ${CMAKE_COMMAND} -E copy_if_different
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${CMAKE_CURRENT_BINARY_DIR}/${ofn}.tmp
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${CMAKE_CURRENT_BINARY_DIR}/${ofn}
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DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${ofn}.tmp
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COMMENT "Updating ${ofn}..."
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)
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# `make clean' must remove all those generated files:
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set_property(DIRECTORY APPEND
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PROPERTY ADDITIONAL_MAKE_CLEAN_FILES ${ofn}.tmp ${ofn})
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set(TABLEGEN_OUTPUT ${TABLEGEN_OUTPUT} ${CMAKE_CURRENT_BINARY_DIR}/${ofn} PARENT_SCOPE)
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set_source_files_properties(${CMAKE_CURRENT_BINARY_DIR}/${ofn} PROPERTIES
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GENERATED 1)
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endfunction()
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# Creates a target for publicly exporting tablegen dependencies.
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function(add_public_tablegen_target target)
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if(NOT TABLEGEN_OUTPUT)
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message(FATAL_ERROR "Requires tablegen() definitions as TABLEGEN_OUTPUT.")
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endif()
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add_custom_target(${target}
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DEPENDS ${TABLEGEN_OUTPUT})
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if(LLVM_COMMON_DEPENDS)
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add_dependencies(${target} ${LLVM_COMMON_DEPENDS})
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endif()
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set_target_properties(${target} PROPERTIES FOLDER "Tablegenning")
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set(LLVM_COMMON_DEPENDS ${LLVM_COMMON_DEPENDS} ${target} PARENT_SCOPE)
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endfunction()
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macro(add_tablegen target project)
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set(${target}_OLD_LLVM_LINK_COMPONENTS ${LLVM_LINK_COMPONENTS})
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set(LLVM_LINK_COMPONENTS ${LLVM_LINK_COMPONENTS} TableGen)
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add_llvm_utility(${target} ${ARGN})
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set(LLVM_LINK_COMPONENTS ${${target}_OLD_LLVM_LINK_COMPONENTS})
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set(${project}_TABLEGEN "${target}" CACHE
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STRING "Native TableGen executable. Saves building one when cross-compiling.")
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# Upgrade existing LLVM_TABLEGEN setting.
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if(${project} STREQUAL LLVM)
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if(${LLVM_TABLEGEN} STREQUAL tblgen)
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set(LLVM_TABLEGEN "${target}" CACHE
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STRING "Native TableGen executable. Saves building one when cross-compiling."
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FORCE)
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endif()
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endif()
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# Effective tblgen executable to be used:
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set(${project}_TABLEGEN_EXE ${${project}_TABLEGEN} PARENT_SCOPE)
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set(${project}_TABLEGEN_TARGET ${${project}_TABLEGEN} PARENT_SCOPE)
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if(LLVM_USE_HOST_TOOLS)
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if( ${${project}_TABLEGEN} STREQUAL "${target}" )
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set(${project}_TABLEGEN_EXE "${LLVM_NATIVE_BUILD}/bin/${target}")
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set(${project}_TABLEGEN_EXE ${${project}_TABLEGEN_EXE} PARENT_SCOPE)
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add_custom_command(OUTPUT ${${project}_TABLEGEN_EXE}
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COMMAND ${CMAKE_COMMAND} --build . --target ${target} --config Release
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DEPENDS CONFIGURE_LLVM_NATIVE ${target}
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WORKING_DIRECTORY ${LLVM_NATIVE_BUILD}
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COMMENT "Building native TableGen...")
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add_custom_target(${project}-tablegen-host DEPENDS ${${project}_TABLEGEN_EXE})
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set(${project}_TABLEGEN_TARGET ${project}-tablegen-host PARENT_SCOPE)
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endif()
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endif()
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if( MINGW )
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if(CMAKE_SIZEOF_VOID_P MATCHES "8")
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set_target_properties(${target} PROPERTIES LINK_FLAGS -Wl,--stack,16777216)
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endif(CMAKE_SIZEOF_VOID_P MATCHES "8")
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endif( MINGW )
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if (${project} STREQUAL LLVM AND NOT LLVM_INSTALL_TOOLCHAIN_ONLY)
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install(TARGETS ${target}
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EXPORT LLVMExports
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RUNTIME DESTINATION bin)
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endif()
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set_property(GLOBAL APPEND PROPERTY LLVM_EXPORTS ${target})
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endmacro()
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