forked from OSchip/llvm-project
353 lines
10 KiB
CMake
353 lines
10 KiB
CMake
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# A rule for self contained header file targets.
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# This rule merely copies the header file from the current source directory to
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# the current binary directory.
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# Usage:
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# add_header(
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# <target name>
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# HDR <header file>
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# )
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function(add_header target_name)
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cmake_parse_arguments(
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"ADD_HEADER"
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"" # No optional arguments
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"HDR" # Single value arguments
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"DEPENDS" # No multi value arguments
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${ARGN}
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)
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if(NOT ADD_HEADER_HDR)
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message(FATAL_ERROR "'add_header' rules requires the HDR argument specifying a headef file.")
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endif()
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set(dest_file ${CMAKE_CURRENT_BINARY_DIR}/${ADD_HEADER_HDR})
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set(src_file ${CMAKE_CURRENT_SOURCE_DIR}/${ADD_HEADER_HDR})
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add_custom_command(
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OUTPUT ${dest_file}
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COMMAND cp ${src_file} ${dest_file}
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DEPENDS ${src_file}
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)
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add_custom_target(
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${target_name}
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DEPENDS ${dest_file}
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)
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if(ADD_HEADER_DEPENDS)
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add_dependencies(
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${target_name} ${ADD_HEADER_DEPENDS}
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)
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endif()
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endfunction(add_header)
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# A rule for generated header file targets.
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# Usage:
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# add_gen_header(
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# <target name>
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# DEF_FILE <.h.def file>
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# GEN_HDR <generated header file name>
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# PARAMS <list of name=value pairs>
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# DATA_FILES <list input data files>
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# )
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function(add_gen_header target_name)
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cmake_parse_arguments(
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"ADD_GEN_HDR"
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"" # No optional arguments
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"DEF_FILE;GEN_HDR" # Single value arguments
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"PARAMS;DATA_FILES;DEPENDS" # Multi value arguments
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${ARGN}
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)
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if(NOT ADD_GEN_HDR_DEF_FILE)
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message(FATAL_ERROR "`add_gen_hdr` rule requires DEF_FILE to be specified.")
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endif()
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if(NOT ADD_GEN_HDR_GEN_HDR)
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message(FATAL_ERROR "`add_gen_hdr` rule requires GEN_HDR to be specified.")
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endif()
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set(out_file ${CMAKE_CURRENT_BINARY_DIR}/${ADD_GEN_HDR_GEN_HDR})
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set(in_file ${CMAKE_CURRENT_SOURCE_DIR}/${ADD_GEN_HDR_DEF_FILE})
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set(fq_data_files "")
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if(ADD_GEN_HDR_DATA_FILES)
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foreach(data_file IN LISTS ADD_GEN_HDR_DATA_FILES)
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list(APPEND fq_data_files "${CMAKE_CURRENT_SOURCE_DIR}/${data_file}")
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endforeach(data_file)
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endif()
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set(replacement_params "")
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if(ADD_GEN_HDR_PARAMS)
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list(APPEND replacement_params "--args" ${ADD_GEN_HDR_PARAMS})
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endif()
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set(gen_hdr_script "${LIBC_BUILD_SCRIPTS_DIR}/gen_hdr.py")
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add_custom_command(
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OUTPUT ${out_file}
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COMMAND $<TARGET_FILE:libc-hdrgen> -o ${out_file} --header ${ADD_GEN_HDR_GEN_HDR} --def ${in_file} ${replacement_params} -I ${LIBC_SOURCE_DIR} ${LIBC_SOURCE_DIR}/config/${LIBC_TARGET_OS}/api.td
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WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
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DEPENDS ${in_file} ${fq_data_files} ${LIBC_SOURCE_DIR}/config/${LIBC_TARGET_OS}/api.td libc-hdrgen
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)
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add_custom_target(
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${target_name}
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DEPENDS ${out_file} ${ADD_GEN_HDR_DEPENDS}
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)
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endfunction(add_gen_header)
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set(ENTRYPOINT_OBJ_TARGET_TYPE "ENTRYPOINT_OBJ")
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# A rule for entrypoint object targets.
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# Usage:
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# add_entrypoint_object(
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# <target_name>
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# [REDIRECTED] # Specified if the entrypoint is redirected.
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# SRCS <list of .cpp files>
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# HDRS <list of .h files>
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# DEPENDS <list of dependencies>
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# )
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function(add_entrypoint_object target_name)
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cmake_parse_arguments(
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"ADD_ENTRYPOINT_OBJ"
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"REDIRECTED" # Optional argument
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"" # No single value arguments
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"SRCS;HDRS;DEPENDS" # Multi value arguments
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${ARGN}
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)
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if(NOT ADD_ENTRYPOINT_OBJ_SRCS)
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message(FATAL_ERROR "`add_entrypoint_object` rule requires SRCS to be specified.")
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endif()
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if(NOT ADD_ENTRYPOINT_OBJ_HDRS)
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message(FATAL_ERROR "`add_entrypoint_object` rule requires HDRS to be specified.")
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endif()
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add_library(
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"${target_name}_objects"
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# We want an object library as the objects will eventually get packaged into
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# an archive (like libc.a).
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OBJECT
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${ADD_ENTRYPOINT_OBJ_SRCS}
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${ADD_ENTRYPOINT_OBJ_HDRS}
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)
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target_compile_options(
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${target_name}_objects
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BEFORE
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PRIVATE
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-fpie ${LLVM_CXX_STD_default}
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)
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target_include_directories(
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${target_name}_objects
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PRIVATE
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"${LIBC_BUILD_DIR}/include;${LIBC_SOURCE_DIR};${LIBC_BUILD_DIR}"
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)
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add_dependencies(
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${target_name}_objects
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support_common_h
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)
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if(ADD_ENTRYPOINT_OBJ_DEPENDS)
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add_dependencies(
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${target_name}_objects
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${ADD_ENTRYPOINT_OBJ_DEPENDS}
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)
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endif()
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set(object_file_raw "${CMAKE_CURRENT_BINARY_DIR}/${target_name}_raw.o")
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set(object_file "${CMAKE_CURRENT_BINARY_DIR}/${target_name}.o")
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add_custom_command(
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OUTPUT ${object_file_raw}
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DEPENDS $<TARGET_OBJECTS:${target_name}_objects>
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COMMAND ${CMAKE_LINKER} -r $<TARGET_OBJECTS:${target_name}_objects> -o ${object_file_raw}
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)
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set(alias_attributes "0,function,global")
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if(ADD_ENTRYPOINT_OBJ_REDIRECTED)
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set(alias_attributes "${alias_attributes},hidden")
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endif()
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add_custom_command(
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OUTPUT ${object_file}
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# We llvm-objcopy here as GNU-binutils objcopy does not support the 'hidden' flag.
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DEPENDS ${object_file_raw} ${llvm-objcopy}
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COMMAND $<TARGET_FILE:llvm-objcopy> --add-symbol "${target_name}=.llvm.libc.entrypoint.${target_name}:${alias_attributes}" ${object_file_raw} ${object_file}
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)
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add_custom_target(
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${target_name}
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ALL
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DEPENDS ${object_file}
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)
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set_target_properties(
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${target_name}
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PROPERTIES
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"TARGET_TYPE" ${ENTRYPOINT_OBJ_TARGET_TYPE}
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"OBJECT_FILE" ${object_file}
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"OBJECT_FILE_RAW" ${object_file_raw}
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)
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endfunction(add_entrypoint_object)
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# A rule to build a library from a collection of entrypoint objects.
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# Usage:
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# add_entrypoint_library(
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# DEPENDS <list of add_entrypoint_object targets>
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# )
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function(add_entrypoint_library target_name)
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cmake_parse_arguments(
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"ENTRYPOINT_LIBRARY"
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"" # No optional arguments
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"" # No single value arguments
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"DEPENDS" # Multi-value arguments
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${ARGN}
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)
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if(NOT ENTRYPOINT_LIBRARY_DEPENDS)
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message(FATAL_ERROR "'add_entrypoint_library' target requires a DEPENDS list of 'add_entrypoint_object' targets.")
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endif()
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set(obj_list "")
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foreach(dep IN LISTS ENTRYPOINT_LIBRARY_DEPENDS)
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get_target_property(dep_type ${dep} "TARGET_TYPE")
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string(COMPARE EQUAL ${dep_type} ${ENTRYPOINT_OBJ_TARGET_TYPE} dep_is_entrypoint)
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if(NOT dep_is_entrypoint)
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message(FATAL_ERROR "Dependency '${dep}' of 'add_entrypoint_collection' is not an 'add_entrypoint_object' target.")
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endif()
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get_target_property(target_obj_file ${dep} "OBJECT_FILE")
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list(APPEND obj_list "${target_obj_file}")
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endforeach(dep)
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set(library_file "${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_STATIC_LIBRARY_PREFIX}${target_name}${CMAKE_STATIC_LIBRARY_SUFFIX}")
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add_custom_command(
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OUTPUT ${library_file}
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COMMAND ${CMAKE_AR} -r ${library_file} ${obj_list}
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DEPENDS ${obj_list}
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)
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add_custom_target(
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${target_name}
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ALL
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DEPENDS ${library_file}
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)
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endfunction(add_entrypoint_library)
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# Rule build a redirector object file.
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function(add_redirector_object target_name)
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cmake_parse_arguments(
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"REDIRECTOR_OBJECT"
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"" # No optional arguments
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"SRC" # The cpp file in which the redirector is defined.
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"" # No multivalue arguments
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${ARGN}
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)
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if(NOT REDIRECTOR_OBJECT_SRC)
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message(FATAL_ERROR "'add_redirector_object' rule requires SRC option listing one source file.")
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endif()
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add_library(
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${target_name}
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OBJECT
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${REDIRECTOR_OBJECT_SRC}
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)
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target_compile_options(
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${target_name}
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BEFORE PRIVATE -fPIC
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)
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endfunction(add_redirector_object)
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# Rule to build a shared library of redirector objects
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function(add_redirector_library target_name)
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cmake_parse_arguments(
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"REDIRECTOR_LIBRARY"
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""
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""
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"DEPENDS"
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${ARGN}
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)
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set(obj_files "")
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foreach(dep IN LISTS REDIRECTOR_LIBRARY_DEPENDS)
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# TODO: Ensure that each dep is actually a add_redirector_object target.
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list(APPEND obj_files $<TARGET_OBJECTS:${dep}>)
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endforeach(dep)
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# TODO: Call the linker explicitly instead of calling the compiler driver to
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# prevent DT_NEEDED on C++ runtime.
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add_library(
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${target_name}
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SHARED
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${obj_files}
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)
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set_target_properties(${target_name} PROPERTIES LIBRARY_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
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target_link_libraries(
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${target_name}
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-nostdlib -lc -lm
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)
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set_target_properties(
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${target_name}
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PROPERTIES
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LINKER_LANGUAGE "C"
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)
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endfunction(add_redirector_library)
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function(add_libc_unittest target_name)
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if(NOT LLVM_INCLUDE_TESTS)
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return()
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endif()
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cmake_parse_arguments(
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"LIBC_UNITTEST"
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"" # No optional arguments
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"SUITE" # Single value arguments
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"SRCS;HDRS;DEPENDS" # Multi-value arguments
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${ARGN}
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)
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if(NOT LIBC_UNITTEST_SRCS)
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message(FATAL_ERROR "'add_libc_unittest' target requires a SRCS list of .cpp files.")
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endif()
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if(NOT LIBC_UNITTEST_DEPENDS)
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message(FATAL_ERROR "'add_libc_unittest' target requires a DEPENDS list of 'add_entrypoint_object' targets.")
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endif()
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set(entrypoint_objects "")
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foreach(dep IN LISTS LIBC_UNITTEST_DEPENDS)
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get_target_property(dep_type ${dep} "TARGET_TYPE")
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string(COMPARE EQUAL ${dep_type} ${ENTRYPOINT_OBJ_TARGET_TYPE} dep_is_entrypoint)
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if(NOT dep_is_entrypoint)
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message(FATAL_ERROR "Dependency '${dep}' of 'add_entrypoint_unittest' is not an 'add_entrypoint_object' target.")
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endif()
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get_target_property(obj_file ${dep} "OBJECT_FILE_RAW")
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list(APPEND entrypoint_objects "${obj_file}")
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endforeach(dep)
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add_executable(
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${target_name}
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EXCLUDE_FROM_ALL
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${LIBC_UNITTEST_SRCS}
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${LIBC_UNITTEST_HDRS}
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)
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target_include_directories(
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${target_name}
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PRIVATE
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${LLVM_MAIN_SRC_DIR}/utils/unittest/googletest/include
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${LLVM_MAIN_SRC_DIR}/utils/unittest/googlemock/include
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${LIBC_SOURCE_DIR}
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)
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target_link_libraries(${target_name} PRIVATE ${entrypoint_objects} gtest_main gtest)
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set_target_properties(${target_name} PROPERTIES RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
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add_dependencies(
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${target_name}
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${LIBC_UNITTEST_DEPENDS}
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gtest
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)
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add_custom_command(
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TARGET ${target_name}
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POST_BUILD
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COMMAND $<TARGET_FILE:${target_name}>
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)
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if(LIBC_UNITTEST_SUITE)
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add_dependencies(
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${LIBC_UNITTEST_SUITE}
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${target_name}
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)
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endif()
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endfunction(add_libc_unittest)
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