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CMake/Modules/GetPrerequisites.cmake

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#.rst:
# GetPrerequisites
# ----------------
#
# Functions to analyze and list executable file prerequisites.
#
# This module provides functions to list the .dll, .dylib or .so files
# that an executable or shared library file depends on. (Its
# prerequisites.)
#
# It uses various tools to obtain the list of required shared library
# files:
#
# ::
#
# dumpbin (Windows)
# objdump (MinGW on Windows)
# ldd (Linux/Unix)
# otool (Mac OSX)
#
# The following functions are provided by this module:
#
# ::
#
# get_prerequisites
# list_prerequisites
# list_prerequisites_by_glob
# gp_append_unique
# is_file_executable
# gp_item_default_embedded_path
# (projects can override with gp_item_default_embedded_path_override)
# gp_resolve_item
# (projects can override with gp_resolve_item_override)
# gp_resolved_file_type
# (projects can override with gp_resolved_file_type_override)
# gp_file_type
#
# Requires CMake 2.6 or greater because it uses function, break, return
# and PARENT_SCOPE.
#
# ::
#
# GET_PREREQUISITES(<target> <prerequisites_var> <exclude_system> <recurse>
# <exepath> <dirs> [<rpaths>])
#
# Get the list of shared library files required by <target>. The list
# in the variable named <prerequisites_var> should be empty on first
# entry to this function. On exit, <prerequisites_var> will contain the
# list of required shared library files.
#
# <target> is the full path to an executable file. <prerequisites_var>
# is the name of a CMake variable to contain the results.
# <exclude_system> must be 0 or 1 indicating whether to include or
# exclude "system" prerequisites. If <recurse> is set to 1 all
# prerequisites will be found recursively, if set to 0 only direct
# prerequisites are listed. <exepath> is the path to the top level
# executable used for @executable_path replacment on the Mac. <dirs> is
# a list of paths where libraries might be found: these paths are
# searched first when a target without any path info is given. Then
# standard system locations are also searched: PATH, Framework
# locations, /usr/lib...
#
# ::
#
# LIST_PREREQUISITES(<target> [<recurse> [<exclude_system> [<verbose>]]])
#
# Print a message listing the prerequisites of <target>.
#
# <target> is the name of a shared library or executable target or the
# full path to a shared library or executable file. If <recurse> is set
# to 1 all prerequisites will be found recursively, if set to 0 only
# direct prerequisites are listed. <exclude_system> must be 0 or 1
# indicating whether to include or exclude "system" prerequisites. With
# <verbose> set to 0 only the full path names of the prerequisites are
# printed, set to 1 extra informatin will be displayed.
#
# ::
#
# LIST_PREREQUISITES_BY_GLOB(<glob_arg> <glob_exp>)
#
# Print the prerequisites of shared library and executable files
# matching a globbing pattern. <glob_arg> is GLOB or GLOB_RECURSE and
# <glob_exp> is a globbing expression used with "file(GLOB" or
# "file(GLOB_RECURSE" to retrieve a list of matching files. If a
# matching file is executable, its prerequisites are listed.
#
# Any additional (optional) arguments provided are passed along as the
# optional arguments to the list_prerequisites calls.
#
# ::
#
# GP_APPEND_UNIQUE(<list_var> <value>)
#
# Append <value> to the list variable <list_var> only if the value is
# not already in the list.
#
# ::
#
# IS_FILE_EXECUTABLE(<file> <result_var>)
#
# Return 1 in <result_var> if <file> is a binary executable, 0
# otherwise.
#
# ::
#
# GP_ITEM_DEFAULT_EMBEDDED_PATH(<item> <default_embedded_path_var>)
#
# Return the path that others should refer to the item by when the item
# is embedded inside a bundle.
#
# Override on a per-project basis by providing a project-specific
# gp_item_default_embedded_path_override function.
#
# ::
#
# GP_RESOLVE_ITEM(<context> <item> <exepath> <dirs> <resolved_item_var>
# [<rpaths>])
#
# Resolve an item into an existing full path file.
#
# Override on a per-project basis by providing a project-specific
# gp_resolve_item_override function.
#
# ::
#
# GP_RESOLVED_FILE_TYPE(<original_file> <file> <exepath> <dirs> <type_var>
# [<rpaths>])
#
# Return the type of <file> with respect to <original_file>. String
# describing type of prerequisite is returned in variable named
# <type_var>.
#
# Use <exepath> and <dirs> if necessary to resolve non-absolute <file>
# values -- but only for non-embedded items.
#
# Possible types are:
#
# ::
#
# system
# local
# embedded
# other
#
# Override on a per-project basis by providing a project-specific
# gp_resolved_file_type_override function.
#
# ::
#
# GP_FILE_TYPE(<original_file> <file> <type_var>)
#
# Return the type of <file> with respect to <original_file>. String
# describing type of prerequisite is returned in variable named
# <type_var>.
#
# Possible types are:
#
# ::
#
# system
# local
# embedded
# other
#=============================================================================
# Copyright 2008-2009 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(gp_append_unique list_var value)
set(contains 0)
foreach(item ${${list_var}})
if(item STREQUAL "${value}")
set(contains 1)
break()
endif()
endforeach()
if(NOT contains)
set(${list_var} ${${list_var}} "${value}" PARENT_SCOPE)
endif()
endfunction()
function(is_file_executable file result_var)
#
# A file is not executable until proven otherwise:
#
set(${result_var} 0 PARENT_SCOPE)
get_filename_component(file_full "${file}" ABSOLUTE)
string(TOLOWER "${file_full}" file_full_lower)
# If file name ends in .exe on Windows, *assume* executable:
#
if(WIN32 AND NOT UNIX)
if("${file_full_lower}" MATCHES "\\.exe$")
set(${result_var} 1 PARENT_SCOPE)
return()
endif()
# A clause could be added here that uses output or return value of dumpbin
# to determine ${result_var}. In 99%+? practical cases, the exe name
# match will be sufficient...
#
endif()
# Use the information returned from the Unix shell command "file" to
# determine if ${file_full} should be considered an executable file...
#
# If the file command's output contains "executable" and does *not* contain
# "text" then it is likely an executable suitable for prerequisite analysis
# via the get_prerequisites macro.
#
if(UNIX)
if(NOT file_cmd)
find_program(file_cmd "file")
mark_as_advanced(file_cmd)
endif()
if(file_cmd)
execute_process(COMMAND "${file_cmd}" "${file_full}"
RESULT_VARIABLE file_rv
OUTPUT_VARIABLE file_ov
ERROR_VARIABLE file_ev
OUTPUT_STRIP_TRAILING_WHITESPACE
)
if(NOT file_rv STREQUAL "0")
message(FATAL_ERROR "${file_cmd} failed: ${file_rv}\n${file_ev}")
endif()
# Replace the name of the file in the output with a placeholder token
# (the string " _file_full_ ") so that just in case the path name of
# the file contains the word "text" or "executable" we are not fooled
# into thinking "the wrong thing" because the file name matches the
# other 'file' command output we are looking for...
#
string(REPLACE "${file_full}" " _file_full_ " file_ov "${file_ov}")
string(TOLOWER "${file_ov}" file_ov)
#message(STATUS "file_ov='${file_ov}'")
if("${file_ov}" MATCHES "executable")
#message(STATUS "executable!")
if("${file_ov}" MATCHES "text")
#message(STATUS "but text, so *not* a binary executable!")
else()
set(${result_var} 1 PARENT_SCOPE)
return()
endif()
endif()
# Also detect position independent executables on Linux,
# where "file" gives "shared object ... (uses shared libraries)"
if("${file_ov}" MATCHES "shared object.*\(uses shared libs\)")
set(${result_var} 1 PARENT_SCOPE)
return()
endif()
# "file" version 5.22 does not print "(used shared libraries)"
# but uses "interpreter"
if("${file_ov}" MATCHES "shared object.*interpreter")
set(${result_var} 1 PARENT_SCOPE)
return()
endif()
else()
message(STATUS "warning: No 'file' command, skipping execute_process...")
endif()
endif()
endfunction()
function(gp_item_default_embedded_path item default_embedded_path_var)
# On Windows and Linux, "embed" prerequisites in the same directory
# as the executable by default:
#
set(path "@executable_path")
set(overridden 0)
# On the Mac, relative to the executable depending on the type
# of the thing we are embedding:
#
if(APPLE)
#
# The assumption here is that all executables in the bundle will be
# in same-level-directories inside the bundle. The parent directory
# of an executable inside the bundle should be MacOS or a sibling of
# MacOS and all embedded paths returned from here will begin with
# "@executable_path/../" and will work from all executables in all
# such same-level-directories inside the bundle.
#
# By default, embed things right next to the main bundle executable:
#
set(path "@executable_path/../../Contents/MacOS")
# Embed .dylibs right next to the main bundle executable:
#
if(item MATCHES "\\.dylib$")
set(path "@executable_path/../MacOS")
set(overridden 1)
endif()
# Embed frameworks in the embedded "Frameworks" directory (sibling of MacOS):
#
if(NOT overridden)
if(item MATCHES "[^/]+\\.framework/")
set(path "@executable_path/../Frameworks")
set(overridden 1)
endif()
endif()
endif()
# Provide a hook so that projects can override the default embedded location
# of any given library by whatever logic they choose:
#
if(COMMAND gp_item_default_embedded_path_override)
gp_item_default_embedded_path_override("${item}" path)
endif()
set(${default_embedded_path_var} "${path}" PARENT_SCOPE)
endfunction()
function(gp_resolve_item context item exepath dirs resolved_item_var)
set(resolved 0)
set(resolved_item "${item}")
if(ARGC GREATER 5)
set(rpaths "${ARGV5}")
else()
set(rpaths "")
endif()
# Is it already resolved?
#
if(IS_ABSOLUTE "${resolved_item}" AND EXISTS "${resolved_item}")
set(resolved 1)
endif()
if(NOT resolved)
if(item MATCHES "^@executable_path")
#
# @executable_path references are assumed relative to exepath
#
string(REPLACE "@executable_path" "${exepath}" ri "${item}")
get_filename_component(ri "${ri}" ABSOLUTE)
if(EXISTS "${ri}")
#message(STATUS "info: embedded item exists (${ri})")
set(resolved 1)
set(resolved_item "${ri}")
else()
message(STATUS "warning: embedded item does not exist '${ri}'")
endif()
endif()
endif()
if(NOT resolved)
if(item MATCHES "^@loader_path")
#
# @loader_path references are assumed relative to the
# PATH of the given "context" (presumably another library)
#
get_filename_component(contextpath "${context}" PATH)
string(REPLACE "@loader_path" "${contextpath}" ri "${item}")
get_filename_component(ri "${ri}" ABSOLUTE)
if(EXISTS "${ri}")
#message(STATUS "info: embedded item exists (${ri})")
set(resolved 1)
set(resolved_item "${ri}")
else()
message(STATUS "warning: embedded item does not exist '${ri}'")
endif()
endif()
endif()
if(NOT resolved)
if(item MATCHES "^@rpath")
#
# @rpath references are relative to the paths built into the binaries with -rpath
# We handle this case like we do for other Unixes
#
string(REPLACE "@rpath/" "" norpath_item "${item}")
set(ri "ri-NOTFOUND")
find_file(ri "${norpath_item}" ${exepath} ${dirs} ${rpaths} NO_DEFAULT_PATH)
if(ri)
#message(STATUS "info: 'find_file' in exepath/dirs/rpaths (${ri})")
set(resolved 1)
set(resolved_item "${ri}")
set(ri "ri-NOTFOUND")
endif()
endif()
endif()
if(NOT resolved)
set(ri "ri-NOTFOUND")
find_file(ri "${item}" ${exepath} ${dirs} NO_DEFAULT_PATH)
find_file(ri "${item}" ${exepath} ${dirs} /usr/lib)
if(ri)
#message(STATUS "info: 'find_file' in exepath/dirs (${ri})")
set(resolved 1)
set(resolved_item "${ri}")
set(ri "ri-NOTFOUND")
endif()
endif()
if(NOT resolved)
if(item MATCHES "[^/]+\\.framework/")
set(fw "fw-NOTFOUND")
find_file(fw "${item}"
"~/Library/Frameworks"
"/Library/Frameworks"
"/System/Library/Frameworks"
)
if(fw)
#message(STATUS "info: 'find_file' found framework (${fw})")
set(resolved 1)
set(resolved_item "${fw}")
set(fw "fw-NOTFOUND")
endif()
endif()
endif()
# Using find_program on Windows will find dll files that are in the PATH.
# (Converting simple file names into full path names if found.)
#
if(WIN32 AND NOT UNIX)
if(NOT resolved)
set(ri "ri-NOTFOUND")
find_program(ri "${item}" PATHS "${exepath};${dirs}" NO_DEFAULT_PATH)
find_program(ri "${item}" PATHS "${exepath};${dirs}")
if(ri)
#message(STATUS "info: 'find_program' in exepath/dirs (${ri})")
set(resolved 1)
set(resolved_item "${ri}")
set(ri "ri-NOTFOUND")
endif()
endif()
endif()
# Provide a hook so that projects can override item resolution
# by whatever logic they choose:
#
if(COMMAND gp_resolve_item_override)
gp_resolve_item_override("${context}" "${item}" "${exepath}" "${dirs}" resolved_item resolved)
endif()
if(NOT resolved)
message(STATUS "
warning: cannot resolve item '${item}'
possible problems:
need more directories?
need to use InstallRequiredSystemLibraries?
run in install tree instead of build tree?
")
# message(STATUS "
#******************************************************************************
#warning: cannot resolve item '${item}'
#
# possible problems:
# need more directories?
# need to use InstallRequiredSystemLibraries?
# run in install tree instead of build tree?
#
# context='${context}'
# item='${item}'
# exepath='${exepath}'
# dirs='${dirs}'
# resolved_item_var='${resolved_item_var}'
#******************************************************************************
#")
endif()
set(${resolved_item_var} "${resolved_item}" PARENT_SCOPE)
endfunction()
function(gp_resolved_file_type original_file file exepath dirs type_var)
if(ARGC GREATER 5)
set(rpaths "${ARGV5}")
else()
set(rpaths "")
endif()
#message(STATUS "**")
if(NOT IS_ABSOLUTE "${original_file}")
message(STATUS "warning: gp_resolved_file_type expects absolute full path for first arg original_file")
endif()
if(IS_ABSOLUTE "${original_file}")
get_filename_component(original_file "${original_file}" ABSOLUTE) # canonicalize path
endif()
set(is_embedded 0)
set(is_local 0)
set(is_system 0)
set(resolved_file "${file}")
if("${file}" MATCHES "^@(executable|loader)_path")
set(is_embedded 1)
endif()
if(NOT is_embedded)
if(NOT IS_ABSOLUTE "${file}")
gp_resolve_item("${original_file}" "${file}" "${exepath}" "${dirs}" resolved_file "${rpaths}")
endif()
if(IS_ABSOLUTE "${resolved_file}")
get_filename_component(resolved_file "${resolved_file}" ABSOLUTE) # canonicalize path
endif()
string(TOLOWER "${original_file}" original_lower)
string(TOLOWER "${resolved_file}" lower)
if(UNIX)
if(resolved_file MATCHES "^(/lib/|/lib32/|/lib64/|/usr/lib/|/usr/lib32/|/usr/lib64/|/usr/X11R6/|/usr/bin/)")
set(is_system 1)
endif()
endif()
if(APPLE)
if(resolved_file MATCHES "^(/System/Library/|/usr/lib/)")
set(is_system 1)
endif()
endif()
if(WIN32)
string(TOLOWER "$ENV{SystemRoot}" sysroot)
file(TO_CMAKE_PATH "${sysroot}" sysroot)
string(TOLOWER "$ENV{windir}" windir)
file(TO_CMAKE_PATH "${windir}" windir)
if(lower MATCHES "^(api-ms-win-|${sysroot}/sys(tem|wow)|${windir}/sys(tem|wow)|(.*/)*msvc[^/]+dll)")
set(is_system 1)
endif()
if(UNIX)
# if cygwin, we can get the properly formed windows paths from cygpath
find_program(CYGPATH_EXECUTABLE cygpath)
if(CYGPATH_EXECUTABLE)
execute_process(COMMAND ${CYGPATH_EXECUTABLE} -W
RESULT_VARIABLE env_rv
OUTPUT_VARIABLE env_windir
ERROR_VARIABLE env_ev
OUTPUT_STRIP_TRAILING_WHITESPACE)
if(NOT env_rv STREQUAL "0")
message(FATAL_ERROR "${CYGPATH_EXECUTABLE} -W failed: ${env_rv}\n${env_ev}")
endif()
execute_process(COMMAND ${CYGPATH_EXECUTABLE} -S
RESULT_VARIABLE env_rv
OUTPUT_VARIABLE env_sysdir
ERROR_VARIABLE env_ev
OUTPUT_STRIP_TRAILING_WHITESPACE)
if(NOT env_rv STREQUAL "0")
message(FATAL_ERROR "${CYGPATH_EXECUTABLE} -S failed: ${env_rv}\n${env_ev}")
endif()
string(TOLOWER "${env_windir}" windir)
string(TOLOWER "${env_sysdir}" sysroot)
if(lower MATCHES "^(api-ms-win-|${sysroot}/sys(tem|wow)|${windir}/sys(tem|wow)|(.*/)*msvc[^/]+dll)")
set(is_system 1)
endif()
endif()
endif()
endif()
if(NOT is_system)
get_filename_component(original_path "${original_lower}" PATH)
get_filename_component(path "${lower}" PATH)
if(original_path STREQUAL path)
set(is_local 1)
else()
string(LENGTH "${original_path}/" original_length)
string(LENGTH "${lower}" path_length)
if(${path_length} GREATER ${original_length})
string(SUBSTRING "${lower}" 0 ${original_length} path)
if("${original_path}/" STREQUAL path)
set(is_embedded 1)
endif()
endif()
endif()
endif()
endif()
# Return type string based on computed booleans:
#
set(type "other")
if(is_system)
set(type "system")
elseif(is_embedded)
set(type "embedded")
elseif(is_local)
set(type "local")
endif()
#message(STATUS "gp_resolved_file_type: '${file}' '${resolved_file}'")
#message(STATUS " type: '${type}'")
if(NOT is_embedded)
if(NOT IS_ABSOLUTE "${resolved_file}")
if(lower MATCHES "^msvc[^/]+dll" AND is_system)
message(STATUS "info: non-absolute msvc file '${file}' returning type '${type}'")
else()
message(STATUS "warning: gp_resolved_file_type non-absolute file '${file}' returning type '${type}' -- possibly incorrect")
endif()
endif()
endif()
# Provide a hook so that projects can override the decision on whether a
# library belongs to the system or not by whatever logic they choose:
#
if(COMMAND gp_resolved_file_type_override)
gp_resolved_file_type_override("${resolved_file}" type)
endif()
set(${type_var} "${type}" PARENT_SCOPE)
#message(STATUS "**")
endfunction()
function(gp_file_type original_file file type_var)
if(NOT IS_ABSOLUTE "${original_file}")
message(STATUS "warning: gp_file_type expects absolute full path for first arg original_file")
endif()
get_filename_component(exepath "${original_file}" PATH)
set(type "")
gp_resolved_file_type("${original_file}" "${file}" "${exepath}" "" type)
set(${type_var} "${type}" PARENT_SCOPE)
endfunction()
function(get_prerequisites target prerequisites_var exclude_system recurse exepath dirs)
set(verbose 0)
set(eol_char "E")
if(ARGC GREATER 6)
set(rpaths "${ARGV6}")
else()
set(rpaths "")
endif()
if(NOT IS_ABSOLUTE "${target}")
message("warning: target '${target}' is not absolute...")
endif()
if(NOT EXISTS "${target}")
message("warning: target '${target}' does not exist...")
endif()
set(gp_cmd_paths ${gp_cmd_paths}
"[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\VisualStudio\\14.0;InstallDir]/../../VC/bin"
"$ENV{VS140COMNTOOLS}/../../VC/bin"
"C:/Program Files (x86)/Microsoft Visual Studio 14.0/VC/bin"
"[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\VisualStudio\\12.0;InstallDir]/../../VC/bin"
"$ENV{VS120COMNTOOLS}/../../VC/bin"
"C:/Program Files (x86)/Microsoft Visual Studio 12.0/VC/bin"
"[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\VisualStudio\\11.0;InstallDir]/../../VC/bin"
"$ENV{VS110COMNTOOLS}/../../VC/bin"
"C:/Program Files (x86)/Microsoft Visual Studio 11.0/VC/bin"
"[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\VisualStudio\\10.0;InstallDir]/../../VC/bin"
"$ENV{VS100COMNTOOLS}/../../VC/bin"
"C:/Program Files (x86)/Microsoft Visual Studio 10.0/VC/bin"
"[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\VisualStudio\\9.0;InstallDir]/../../VC/bin"
"$ENV{VS90COMNTOOLS}/../../VC/bin"
"C:/Program Files/Microsoft Visual Studio 9.0/VC/bin"
"C:/Program Files (x86)/Microsoft Visual Studio 9.0/VC/bin"
"[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\VisualStudio\\8.0;InstallDir]/../../VC/bin"
"$ENV{VS80COMNTOOLS}/../../VC/bin"
"C:/Program Files/Microsoft Visual Studio 8/VC/BIN"
"C:/Program Files (x86)/Microsoft Visual Studio 8/VC/BIN"
"[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\VisualStudio\\7.1;InstallDir]/../../VC7/bin"
"$ENV{VS71COMNTOOLS}/../../VC7/bin"
"C:/Program Files/Microsoft Visual Studio .NET 2003/VC7/BIN"
"C:/Program Files (x86)/Microsoft Visual Studio .NET 2003/VC7/BIN"
"/usr/local/bin"
"/usr/bin"
)
# <setup-gp_tool-vars>
#
# Try to choose the right tool by default. Caller can set gp_tool prior to
# calling this function to force using a different tool.
#
if(NOT gp_tool)
set(gp_tool "ldd")
if(APPLE)
set(gp_tool "otool")
endif()
if(WIN32 AND NOT UNIX) # This is how to check for cygwin, har!
find_program(gp_dumpbin "dumpbin" PATHS ${gp_cmd_paths})
if(gp_dumpbin)
set(gp_tool "dumpbin")
else() # Try harder. Maybe we're on MinGW
set(gp_tool "objdump")
endif()
endif()
endif()
find_program(gp_cmd ${gp_tool} PATHS ${gp_cmd_paths})
if(NOT gp_cmd)
message(STATUS "warning: could not find '${gp_tool}' - cannot analyze prerequisites...")
return()
endif()
set(gp_cmd_maybe_filter) # optional command to pre-filter gp_tool results
if(gp_tool STREQUAL "ldd")
set(gp_cmd_args "")
set(gp_regex "^[\t ]*[^\t ]+ => ([^\t\(]+) .*${eol_char}$")
set(gp_regex_error "not found${eol_char}$")
set(gp_regex_fallback "^[\t ]*([^\t ]+) => ([^\t ]+).*${eol_char}$")
set(gp_regex_cmp_count 1)
elseif(gp_tool STREQUAL "otool")
set(gp_cmd_args "-L")
set(gp_regex "^\t([^\t]+) \\(compatibility version ([0-9]+.[0-9]+.[0-9]+), current version ([0-9]+.[0-9]+.[0-9]+)\\)${eol_char}$")
set(gp_regex_error "")
set(gp_regex_fallback "")
set(gp_regex_cmp_count 3)
elseif(gp_tool STREQUAL "dumpbin")
set(gp_cmd_args "/dependents")
set(gp_regex "^ ([^ ].*[Dd][Ll][Ll])${eol_char}$")
set(gp_regex_error "")
set(gp_regex_fallback "")
set(gp_regex_cmp_count 1)
elseif(gp_tool STREQUAL "objdump")
set(gp_cmd_args "-p")
set(gp_regex "^\t*DLL Name: (.*\\.[Dd][Ll][Ll])${eol_char}$")
set(gp_regex_error "")
set(gp_regex_fallback "")
set(gp_regex_cmp_count 1)
# objdump generates copious output so we create a grep filter to pre-filter results
find_program(gp_grep_cmd grep)
if(gp_grep_cmd)
set(gp_cmd_maybe_filter COMMAND ${gp_grep_cmd} "^[[:blank:]]*DLL Name: ")
endif()
else()
message(STATUS "warning: gp_tool='${gp_tool}' is an unknown tool...")
message(STATUS "CMake function get_prerequisites needs more code to handle '${gp_tool}'")
message(STATUS "Valid gp_tool values are dumpbin, ldd, objdump and otool.")
return()
endif()
if(gp_tool STREQUAL "dumpbin")
# When running dumpbin, it also needs the "Common7/IDE" directory in the
# PATH. It will already be in the PATH if being run from a Visual Studio
# command prompt. Add it to the PATH here in case we are running from a
# different command prompt.
#
get_filename_component(gp_cmd_dir "${gp_cmd}" PATH)
get_filename_component(gp_cmd_dlls_dir "${gp_cmd_dir}/../../Common7/IDE" ABSOLUTE)
# Use cmake paths as a user may have a PATH element ending with a backslash.
# This will escape the list delimiter and create havoc!
if(EXISTS "${gp_cmd_dlls_dir}")
# only add to the path if it is not already in the path
set(gp_found_cmd_dlls_dir 0)
file(TO_CMAKE_PATH "$ENV{PATH}" env_path)
foreach(gp_env_path_element ${env_path})
if(gp_env_path_element STREQUAL gp_cmd_dlls_dir)
set(gp_found_cmd_dlls_dir 1)
endif()
endforeach()
if(NOT gp_found_cmd_dlls_dir)
file(TO_NATIVE_PATH "${gp_cmd_dlls_dir}" gp_cmd_dlls_dir)
set(ENV{PATH} "$ENV{PATH};${gp_cmd_dlls_dir}")
endif()
endif()
endif()
#
# </setup-gp_tool-vars>
if(gp_tool STREQUAL "ldd")
set(old_ld_env "$ENV{LD_LIBRARY_PATH}")
set(new_ld_env "${exepath}")
foreach(dir ${dirs})
set(new_ld_env "${new_ld_env}:${dir}")
endforeach()
set(ENV{LD_LIBRARY_PATH} "${new_ld_env}:$ENV{LD_LIBRARY_PATH}")
endif()
# Track new prerequisites at each new level of recursion. Start with an
# empty list at each level:
#
set(unseen_prereqs)
# Run gp_cmd on the target:
#
execute_process(
COMMAND ${gp_cmd} ${gp_cmd_args} ${target}
${gp_cmd_maybe_filter}
RESULT_VARIABLE gp_rv
OUTPUT_VARIABLE gp_cmd_ov
ERROR_VARIABLE gp_ev
)
if(NOT gp_rv STREQUAL "0")
if(gp_tool STREQUAL "dumpbin")
# dumpbin error messages seem to go to stdout
message(FATAL_ERROR "${gp_cmd} failed: ${gp_rv}\n${gp_ev}\n${gp_cmd_ov}")
else()
message(FATAL_ERROR "${gp_cmd} failed: ${gp_rv}\n${gp_ev}")
endif()
endif()
if(gp_tool STREQUAL "ldd")
set(ENV{LD_LIBRARY_PATH} "${old_ld_env}")
endif()
if(verbose)
message(STATUS "<RawOutput cmd='${gp_cmd} ${gp_cmd_args} ${target}'>")
message(STATUS "gp_cmd_ov='${gp_cmd_ov}'")
message(STATUS "</RawOutput>")
endif()
get_filename_component(target_dir "${target}" PATH)
# Convert to a list of lines:
#
string(REPLACE ";" "\\;" candidates "${gp_cmd_ov}")
string(REPLACE "\n" "${eol_char};" candidates "${candidates}")
# check for install id and remove it from list, since otool -L can include a
# reference to itself
set(gp_install_id)
if(gp_tool STREQUAL "otool")
execute_process(
COMMAND otool -D ${target}
RESULT_VARIABLE otool_rv
OUTPUT_VARIABLE gp_install_id_ov
ERROR_VARIABLE otool_ev
)
if(NOT otool_rv STREQUAL "0")
message(FATAL_ERROR "otool -D failed: ${otool_rv}\n${otool_ev}")
endif()
# second line is install name
string(REGEX REPLACE ".*:\n" "" gp_install_id "${gp_install_id_ov}")
if(gp_install_id)
# trim
string(REGEX MATCH "[^\n ].*[^\n ]" gp_install_id "${gp_install_id}")
#message("INSTALL ID is \"${gp_install_id}\"")
endif()
endif()
# Analyze each line for file names that match the regular expression:
#
foreach(candidate ${candidates})
if("${candidate}" MATCHES "${gp_regex}")
# Extract information from each candidate:
if(gp_regex_error AND "${candidate}" MATCHES "${gp_regex_error}")
string(REGEX REPLACE "${gp_regex_fallback}" "\\1" raw_item "${candidate}")
else()
string(REGEX REPLACE "${gp_regex}" "\\1" raw_item "${candidate}")
endif()
if(gp_regex_cmp_count GREATER 1)
string(REGEX REPLACE "${gp_regex}" "\\2" raw_compat_version "${candidate}")
string(REGEX REPLACE "^([0-9]+)\\.([0-9]+)\\.([0-9]+)$" "\\1" compat_major_version "${raw_compat_version}")
string(REGEX REPLACE "^([0-9]+)\\.([0-9]+)\\.([0-9]+)$" "\\2" compat_minor_version "${raw_compat_version}")
string(REGEX REPLACE "^([0-9]+)\\.([0-9]+)\\.([0-9]+)$" "\\3" compat_patch_version "${raw_compat_version}")
endif()
if(gp_regex_cmp_count GREATER 2)
string(REGEX REPLACE "${gp_regex}" "\\3" raw_current_version "${candidate}")
string(REGEX REPLACE "^([0-9]+)\\.([0-9]+)\\.([0-9]+)$" "\\1" current_major_version "${raw_current_version}")
string(REGEX REPLACE "^([0-9]+)\\.([0-9]+)\\.([0-9]+)$" "\\2" current_minor_version "${raw_current_version}")
string(REGEX REPLACE "^([0-9]+)\\.([0-9]+)\\.([0-9]+)$" "\\3" current_patch_version "${raw_current_version}")
endif()
# Use the raw_item as the list entries returned by this function. Use the
# gp_resolve_item function to resolve it to an actual full path file if
# necessary.
#
set(item "${raw_item}")
# Add each item unless it is excluded:
#
set(add_item 1)
if(item STREQUAL gp_install_id)
set(add_item 0)
endif()
if(add_item AND ${exclude_system})
set(type "")
gp_resolved_file_type("${target}" "${item}" "${exepath}" "${dirs}" type "${rpaths}")
if(type STREQUAL "system")
set(add_item 0)
endif()
endif()
if(add_item)
list(LENGTH ${prerequisites_var} list_length_before_append)
gp_append_unique(${prerequisites_var} "${item}")
list(LENGTH ${prerequisites_var} list_length_after_append)
if(${recurse})
# If item was really added, this is the first time we have seen it.
# Add it to unseen_prereqs so that we can recursively add *its*
# prerequisites...
#
# But first: resolve its name to an absolute full path name such
# that the analysis tools can simply accept it as input.
#
if(NOT list_length_before_append EQUAL list_length_after_append)
gp_resolve_item("${target}" "${item}" "${exepath}" "${dirs}" resolved_item "${rpaths}")
set(unseen_prereqs ${unseen_prereqs} "${resolved_item}")
endif()
endif()
endif()
else()
if(verbose)
message(STATUS "ignoring non-matching line: '${candidate}'")
endif()
endif()
endforeach()
list(LENGTH ${prerequisites_var} prerequisites_var_length)
if(prerequisites_var_length GREATER 0)
list(SORT ${prerequisites_var})
endif()
if(${recurse})
set(more_inputs ${unseen_prereqs})
foreach(input ${more_inputs})
get_prerequisites("${input}" ${prerequisites_var} ${exclude_system} ${recurse} "${exepath}" "${dirs}" "${rpaths}")
endforeach()
endif()
set(${prerequisites_var} ${${prerequisites_var}} PARENT_SCOPE)
endfunction()
function(list_prerequisites target)
if(ARGC GREATER 1 AND NOT "${ARGV1}" STREQUAL "")
set(all "${ARGV1}")
else()
set(all 1)
endif()
if(ARGC GREATER 2 AND NOT "${ARGV2}" STREQUAL "")
set(exclude_system "${ARGV2}")
else()
set(exclude_system 0)
endif()
if(ARGC GREATER 3 AND NOT "${ARGV3}" STREQUAL "")
set(verbose "${ARGV3}")
else()
set(verbose 0)
endif()
set(count 0)
set(count_str "")
set(print_count "${verbose}")
set(print_prerequisite_type "${verbose}")
set(print_target "${verbose}")
set(type_str "")
get_filename_component(exepath "${target}" PATH)
set(prereqs "")
get_prerequisites("${target}" prereqs ${exclude_system} ${all} "${exepath}" "")
if(print_target)
message(STATUS "File '${target}' depends on:")
endif()
foreach(d ${prereqs})
math(EXPR count "${count} + 1")
if(print_count)
set(count_str "${count}. ")
endif()
if(print_prerequisite_type)
gp_file_type("${target}" "${d}" type)
set(type_str " (${type})")
endif()
message(STATUS "${count_str}${d}${type_str}")
endforeach()
endfunction()
function(list_prerequisites_by_glob glob_arg glob_exp)
message(STATUS "=============================================================================")
message(STATUS "List prerequisites of executables matching ${glob_arg} '${glob_exp}'")
message(STATUS "")
file(${glob_arg} file_list ${glob_exp})
foreach(f ${file_list})
is_file_executable("${f}" is_f_executable)
if(is_f_executable)
message(STATUS "=============================================================================")
list_prerequisites("${f}" ${ARGN})
message(STATUS "")
endif()
endforeach()
endfunction()
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