#============================================================================= # Copyright 2009 Kitware, Inc. # # Distributed under the OSI-approved BSD License (the "License"); # see accompanying file Copyright.txt for details. # # This software is distributed WITHOUT ANY WARRANTY; without even the # implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. # See the License for more information. #============================================================================= # (To distribute this file outside of CMake, substitute the full # License text for the above reference.) # Function parse implicit linker options. # This is used internally by CMake and should not be included by user # code. function(CMAKE_PARSE_IMPLICIT_LINK_INFO text lib_var dir_var fwk_var log_var obj_regex) set(implicit_libs_tmp "") set(implicit_dirs_tmp) set(implicit_fwks_tmp) set(log "") # Parse implicit linker arguments. set(linker "CMAKE_LINKER-NOTFOUND") if(CMAKE_LINKER) get_filename_component(linker ${CMAKE_LINKER} NAME) string(REGEX REPLACE "([][+.*?()^$])" "\\\\\\1" linker "${linker}") endif() # Construct a regex to match linker lines. It must match both the # whole line and just the command (argv[0]). set(linker_regex "^( *|.*[/\\])(${linker}|([^/\\]+-)?ld|collect2)[^/\\]*( |$)") set(linker_exclude_regex "collect2 version ") set(log "${log} link line regex: [${linker_regex}]\n") string(REGEX REPLACE "\r?\n" ";" output_lines "${text}") foreach(line IN LISTS output_lines) set(cmd) if("${line}" MATCHES "${linker_regex}" AND NOT "${line}" MATCHES "${linker_exclude_regex}") if(XCODE) # Xcode unconditionally adds a path under the project build tree and # on older versions it is not reported with proper quotes. Remove it. string(REGEX REPLACE "([][+.*()^])" "\\\\\\1" _dir_regex "${CMAKE_BINARY_DIR}") string(REGEX REPLACE " -[FL]${_dir_regex}/([^ ]| [^-])+( |$)" " " xline "${line}") if(NOT "x${xline}" STREQUAL "x${line}") set(log "${log} reduced line: [${line}]\n to: [${xline}]\n") set(line "${xline}") endif() endif() if(UNIX) separate_arguments(args UNIX_COMMAND "${line}") else() separate_arguments(args WINDOWS_COMMAND "${line}") endif() list(GET args 0 cmd) endif() if("${cmd}" MATCHES "${linker_regex}") set(log "${log} link line: [${line}]\n") string(REGEX REPLACE ";-([LYz]);" ";-\\1" args "${args}") foreach(arg IN LISTS args) if("${arg}" MATCHES "^-L(.:)?[/\\]") # Unix search path. string(REGEX REPLACE "^-L" "" dir "${arg}") list(APPEND implicit_dirs_tmp ${dir}) set(log "${log} arg [${arg}] ==> dir [${dir}]\n") elseif("${arg}" MATCHES "^-l[^:]") # Unix library. string(REGEX REPLACE "^-l" "" lib "${arg}") list(APPEND implicit_libs_tmp ${lib}) set(log "${log} arg [${arg}] ==> lib [${lib}]\n") elseif("${arg}" MATCHES "^(.:)?[/\\].*\\.a$") # Unix library full path. list(APPEND implicit_libs_tmp ${arg}) set(log "${log} arg [${arg}] ==> lib [${arg}]\n") elseif("${arg}" MATCHES "^(.:)?[/\\].*\\.o$" AND obj_regex AND "${arg}" MATCHES "${obj_regex}") # Object file full path. list(APPEND implicit_libs_tmp ${arg}) set(log "${log} arg [${arg}] ==> obj [${arg}]\n") elseif("${arg}" MATCHES "^-Y(P,)?[^0-9]") # Sun search path ([^0-9] avoids conflict with Mac -Y). string(REGEX REPLACE "^-Y(P,)?" "" dirs "${arg}") string(REPLACE ":" ";" dirs "${dirs}") list(APPEND implicit_dirs_tmp ${dirs}) set(log "${log} arg [${arg}] ==> dirs [${dirs}]\n") elseif("${arg}" MATCHES "^-l:") # HP named library. list(APPEND implicit_libs_tmp ${arg}) set(log "${log} arg [${arg}] ==> lib [${arg}]\n") elseif("${arg}" MATCHES "^-z(all|default|weak)extract") # Link editor option. list(APPEND implicit_libs_tmp ${arg}) set(log "${log} arg [${arg}] ==> opt [${arg}]\n") else() set(log "${log} arg [${arg}] ==> ignore\n") endif() endforeach() break() elseif("${line}" MATCHES "LPATH(=| is:? )") set(log "${log} LPATH line: [${line}]\n") # HP search path. string(REGEX REPLACE ".*LPATH(=| is:? *)" "" paths "${line}") string(REPLACE ":" ";" paths "${paths}") list(APPEND implicit_dirs_tmp ${paths}) set(log "${log} dirs [${paths}]\n") else() set(log "${log} ignore line: [${line}]\n") endif() endforeach() # Look for library search paths reported by linker. if("${output_lines}" MATCHES ";Library search paths:((;\t[^;]+)+)") string(REPLACE ";\t" ";" implicit_dirs_match "${CMAKE_MATCH_1}") set(log "${log} Library search paths: [${implicit_dirs_match}]\n") list(APPEND implicit_dirs_tmp ${implicit_dirs_match}) endif() if("${output_lines}" MATCHES ";Framework search paths:((;\t[^;]+)+)") string(REPLACE ";\t" ";" implicit_fwks_match "${CMAKE_MATCH_1}") set(log "${log} Framework search paths: [${implicit_fwks_match}]\n") list(APPEND implicit_fwks_tmp ${implicit_fwks_match}) endif() # Cleanup list of libraries and flags. # We remove items that are not language-specific. set(implicit_libs "") foreach(lib IN LISTS implicit_libs_tmp) if("${lib}" MATCHES "^(crt.*\\.o|gcc.*|System.*)$") set(log "${log} remove lib [${lib}]\n") elseif(IS_ABSOLUTE "${lib}") get_filename_component(abs "${lib}" ABSOLUTE) if(NOT "x${lib}" STREQUAL "x${abs}") set(log "${log} collapse lib [${lib}] ==> [${abs}]\n") endif() list(APPEND implicit_libs "${abs}") else() list(APPEND implicit_libs "${lib}") endif() endforeach() # Cleanup list of library and framework directories. set(desc_dirs "library") set(desc_fwks "framework") foreach(t dirs fwks) set(implicit_${t} "") foreach(d IN LISTS implicit_${t}_tmp) get_filename_component(dir "${d}" ABSOLUTE) string(FIND "${dir}" "${CMAKE_FILES_DIRECTORY}/" pos) if(NOT pos LESS 0) set(msg ", skipping non-system directory") else() set(msg "") list(APPEND implicit_${t} "${dir}") endif() set(log "${log} collapse ${desc_${t}} dir [${d}] ==> [${dir}]${msg}\n") endforeach() list(REMOVE_DUPLICATES implicit_${t}) endforeach() # Log results. set(log "${log} implicit libs: [${implicit_libs}]\n") set(log "${log} implicit dirs: [${implicit_dirs}]\n") set(log "${log} implicit fwks: [${implicit_fwks}]\n") # Return results. set(${lib_var} "${implicit_libs}" PARENT_SCOPE) set(${dir_var} "${implicit_dirs}" PARENT_SCOPE) set(${fwk_var} "${implicit_fwks}" PARENT_SCOPE) set(${log_var} "${log}" PARENT_SCOPE) endfunction()