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#=============================================================================
# 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 log_var obj_regex)
set(implicit_libs_tmp "")
set(implicit_dirs_tmp)
set(log "")
# Parse implicit linker arguments.
set(linker "CMAKE_LINKER-NOTFOUND")
if(CMAKE_LINKER)
get_filename_component(linker ${CMAKE_LINKER} NAME)
endif()
# Construct a regex to match linker lines. It must match both the
# whole line and just the command (argv[0]).
set(linker_regex "^( *|.*[/\\])(${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("${arg}" MATCHES "^-Y(P,)?[^0-9]")
# Sun search path ([^0-9] avoids conflict with Mac -Y<num>).
string(REGEX REPLACE "^-Y(P,)?" "" dirs "${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 ${implicit_dirs_match})
endif()
# Cleanup list of libraries and flags.
# We remove items that are not language-specific.
set(implicit_libs "")
foreach(lib IN LISTS implicit_libs_tmp)
if("${lib}" MATCHES "^(crt.*\\.o|gcc.*|System.*)$")
set(log "${log} remove lib [${lib}]\n")
else()
list(APPEND implicit_libs "${lib}")
endif()
endforeach()
# Cleanup list of library directories.
set(implicit_dirs "")
foreach(d IN LISTS implicit_dirs_tmp)
get_filename_component(dir "${d}" ABSOLUTE)
string(FIND "${dir}" "${CMAKE_FILES_DIRECTORY}/" pos)
if(NOT pos LESS 0)
set(msg ", skipping non-system directory")
else()
set(msg "")
list(APPEND implicit_dirs "${dir}")
endif()
set(log "${log} collapse library dir [${d}] ==> [${dir}]${msg}\n")
endforeach()
list(REMOVE_DUPLICATES implicit_dirs)
# Log results.
set(log "${log} implicit libs: [${implicit_libs}]\n")
set(log "${log} implicit dirs: [${implicit_dirs}]\n")
# Return results.
set(${lib_var} "${implicit_libs}" PARENT_SCOPE)
set(${dir_var} "${implicit_dirs}" PARENT_SCOPE)
set(${log_var} "${log}" PARENT_SCOPE)
endfunction()
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