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86578eccf2
Per-source copyright/license notice headers that spell out copyright holder names and years are hard to maintain and often out-of-date or plain wrong. Precise contributor information is already maintained automatically by the version control tool. Ultimately it is the receiver of a file who is responsible for determining its licensing status, and per-source notices are merely a convenience. Therefore it is simpler and more accurate for each source to have a generic notice of the license name and references to more detailed information on copyright holders and full license terms. Our `Copyright.txt` file now contains a list of Contributors whose names appeared source-level copyright notices. It also references version control history for more precise information. Therefore we no longer need to spell out the list of Contributors in each source file notice. Replace CMake per-source copyright/license notice headers with a short description of the license and links to `Copyright.txt` and online information available from "https://cmake.org/licensing". The online URL also handles cases of modules being copied out of our source into other projects, so we can drop our notices about replacing links with full license text. Run the `Utilities/Scripts/filter-notices.bash` script to perform the majority of the replacements mechanically. Manually fix up shebang lines and trailing newlines in a few files. Manually update the notices in a few files that the script does not handle.
160 lines
6.5 KiB
CMake
160 lines
6.5 KiB
CMake
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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# file Copyright.txt or https://cmake.org/licensing for details.
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# Function parse implicit linker options.
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# This is used internally by CMake and should not be included by user
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# code.
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function(CMAKE_PARSE_IMPLICIT_LINK_INFO text lib_var dir_var fwk_var log_var obj_regex)
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set(implicit_libs_tmp "")
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set(implicit_dirs_tmp)
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set(implicit_fwks_tmp)
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set(log "")
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# Parse implicit linker arguments.
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set(linker "CMAKE_LINKER-NOTFOUND")
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if(CMAKE_LINKER)
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get_filename_component(linker ${CMAKE_LINKER} NAME)
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string(REGEX REPLACE "([][+.*?()^$])" "\\\\\\1" linker "${linker}")
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endif()
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# Construct a regex to match linker lines. It must match both the
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# whole line and just the command (argv[0]).
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set(linker_regex "^( *|.*[/\\])(${linker}|([^/\\]+-)?ld|collect2)[^/\\]*( |$)")
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set(linker_exclude_regex "collect2 version |^[A-Za-z0-9_]+=|/ldfe ")
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string(APPEND log " link line regex: [${linker_regex}]\n")
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string(REGEX REPLACE "\r?\n" ";" output_lines "${text}")
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foreach(line IN LISTS output_lines)
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set(cmd)
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if("${line}" MATCHES "${linker_regex}" AND
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NOT "${line}" MATCHES "${linker_exclude_regex}")
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if(XCODE)
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# Xcode unconditionally adds a path under the project build tree and
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# on older versions it is not reported with proper quotes. Remove it.
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string(REGEX REPLACE "([][+.*()^])" "\\\\\\1" _dir_regex "${CMAKE_BINARY_DIR}")
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string(REGEX REPLACE " -[FL]${_dir_regex}/([^ ]| [^-])+( |$)" " " xline "${line}")
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if(NOT "x${xline}" STREQUAL "x${line}")
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string(APPEND log " reduced line: [${line}]\n to: [${xline}]\n")
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set(line "${xline}")
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endif()
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endif()
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if(UNIX)
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separate_arguments(args UNIX_COMMAND "${line}")
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else()
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separate_arguments(args WINDOWS_COMMAND "${line}")
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endif()
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list(GET args 0 cmd)
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endif()
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if("${cmd}" MATCHES "${linker_regex}")
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string(APPEND log " link line: [${line}]\n")
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string(REGEX REPLACE ";-([LYz]);" ";-\\1" args "${args}")
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foreach(arg IN LISTS args)
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if("${arg}" MATCHES "^-L(.:)?[/\\]")
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# Unix search path.
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string(REGEX REPLACE "^-L" "" dir "${arg}")
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list(APPEND implicit_dirs_tmp ${dir})
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string(APPEND log " arg [${arg}] ==> dir [${dir}]\n")
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elseif("${arg}" MATCHES "^-l([^:].*)$")
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# Unix library.
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set(lib "${CMAKE_MATCH_1}")
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list(APPEND implicit_libs_tmp ${lib})
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string(APPEND log " arg [${arg}] ==> lib [${lib}]\n")
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elseif("${arg}" MATCHES "^(.:)?[/\\].*\\.a$")
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# Unix library full path.
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list(APPEND implicit_libs_tmp ${arg})
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string(APPEND log " arg [${arg}] ==> lib [${arg}]\n")
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elseif("${arg}" MATCHES "^(.:)?[/\\].*\\.o$"
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AND obj_regex AND "${arg}" MATCHES "${obj_regex}")
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# Object file full path.
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list(APPEND implicit_libs_tmp ${arg})
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string(APPEND log " arg [${arg}] ==> obj [${arg}]\n")
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elseif("${arg}" MATCHES "^-Y(P,)?[^0-9]")
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# Sun search path ([^0-9] avoids conflict with Mac -Y<num>).
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string(REGEX REPLACE "^-Y(P,)?" "" dirs "${arg}")
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string(REPLACE ":" ";" dirs "${dirs}")
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list(APPEND implicit_dirs_tmp ${dirs})
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string(APPEND log " arg [${arg}] ==> dirs [${dirs}]\n")
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elseif("${arg}" MATCHES "^-l:")
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# HP named library.
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list(APPEND implicit_libs_tmp ${arg})
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string(APPEND log " arg [${arg}] ==> lib [${arg}]\n")
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elseif("${arg}" MATCHES "^-z(all|default|weak)extract")
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# Link editor option.
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list(APPEND implicit_libs_tmp ${arg})
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string(APPEND log " arg [${arg}] ==> opt [${arg}]\n")
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else()
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string(APPEND log " arg [${arg}] ==> ignore\n")
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endif()
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endforeach()
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break()
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elseif("${line}" MATCHES "LPATH(=| is:? *)(.*)$")
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string(APPEND log " LPATH line: [${line}]\n")
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# HP search path.
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string(REPLACE ":" ";" paths "${CMAKE_MATCH_2}")
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list(APPEND implicit_dirs_tmp ${paths})
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string(APPEND log " dirs [${paths}]\n")
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else()
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string(APPEND log " ignore line: [${line}]\n")
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endif()
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endforeach()
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# Look for library search paths reported by linker.
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if("${output_lines}" MATCHES ";Library search paths:((;\t[^;]+)+)")
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string(REPLACE ";\t" ";" implicit_dirs_match "${CMAKE_MATCH_1}")
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string(APPEND log " Library search paths: [${implicit_dirs_match}]\n")
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list(APPEND implicit_dirs_tmp ${implicit_dirs_match})
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endif()
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if("${output_lines}" MATCHES ";Framework search paths:((;\t[^;]+)+)")
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string(REPLACE ";\t" ";" implicit_fwks_match "${CMAKE_MATCH_1}")
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string(APPEND log " Framework search paths: [${implicit_fwks_match}]\n")
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list(APPEND implicit_fwks_tmp ${implicit_fwks_match})
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endif()
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# Cleanup list of libraries and flags.
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# We remove items that are not language-specific.
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set(implicit_libs "")
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foreach(lib IN LISTS implicit_libs_tmp)
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if("x${lib}" MATCHES "^x(crt.*\\.o|gcc.*|System.*|.*libclang_rt.*)$")
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string(APPEND log " remove lib [${lib}]\n")
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elseif(IS_ABSOLUTE "${lib}")
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get_filename_component(abs "${lib}" ABSOLUTE)
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if(NOT "x${lib}" STREQUAL "x${abs}")
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string(APPEND log " collapse lib [${lib}] ==> [${abs}]\n")
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endif()
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list(APPEND implicit_libs "${abs}")
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else()
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list(APPEND implicit_libs "${lib}")
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endif()
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endforeach()
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# Cleanup list of library and framework directories.
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set(desc_dirs "library")
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set(desc_fwks "framework")
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foreach(t dirs fwks)
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set(implicit_${t} "")
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foreach(d IN LISTS implicit_${t}_tmp)
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get_filename_component(dir "${d}" ABSOLUTE)
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string(FIND "${dir}" "${CMAKE_FILES_DIRECTORY}/" pos)
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if(NOT pos LESS 0)
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set(msg ", skipping non-system directory")
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else()
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set(msg "")
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list(APPEND implicit_${t} "${dir}")
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endif()
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string(APPEND log " collapse ${desc_${t}} dir [${d}] ==> [${dir}]${msg}\n")
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endforeach()
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list(REMOVE_DUPLICATES implicit_${t})
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endforeach()
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# Log results.
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string(APPEND log " implicit libs: [${implicit_libs}]\n")
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string(APPEND log " implicit dirs: [${implicit_dirs}]\n")
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string(APPEND log " implicit fwks: [${implicit_fwks}]\n")
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# Return results.
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set(${lib_var} "${implicit_libs}" PARENT_SCOPE)
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set(${dir_var} "${implicit_dirs}" PARENT_SCOPE)
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set(${fwk_var} "${implicit_fwks}" PARENT_SCOPE)
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set(${log_var} "${log}" PARENT_SCOPE)
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endfunction()
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