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CMake/Modules/GetPrerequisites.cmake
Peter Kokot d6e1d220a0
GetPrerequisites: Update documentation 
This updates the module documentation to ease the upgrade path to
file(GET_RUNTIME_DEPENDENCIES) and syncs formatting as used in other
documentation pages. Lowercase style is used for functions, some missing
arguments added to signatures, and examples section added.
2025-03-16 22:49:09 +01:00

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# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file LICENSE.rst or https://cmake.org/licensing for details.
#[=======================================================================[.rst:
GetPrerequisites
----------------
.. deprecated:: 3.16
Use :command:`file(GET_RUNTIME_DEPENDENCIES)` instead.
This module provides functions to analyze and list the dependencies
(prerequisites) of executable or shared library files. These functions list the
shared libraries (``.dll``, ``.dylib``, or ``.so`` files) required by an
executable or shared library.
It determines dependencies using the following platform-specific tools:
* ``dumpbin`` (Windows)
* ``objdump`` (MinGW on Windows)
* ``ldd`` (Linux/Unix)
* ``otool`` (Apple operating systems)
.. versionchanged:: 3.16
The tool specified by the :variable:`CMAKE_OBJDUMP` variable will be used, if
set.
The following functions are provided by this module:
* :command:`get_prerequisites`
* :command:`list_prerequisites`
* :command:`list_prerequisites_by_glob`
* :command:`gp_append_unique`
* :command:`is_file_executable`
* :command:`gp_item_default_embedded_path`
(projects can override it with ``gp_item_default_embedded_path_override()``)
* :command:`gp_resolve_item`
(projects can override it with ``gp_resolve_item_override()``)
* :command:`gp_resolved_file_type`
(projects can override it with ``gp_resolved_file_type_override()``)
* :command:`gp_file_type`
Functions
^^^^^^^^^
.. command:: get_prerequisites
.. code-block:: cmake
get_prerequisites(<target> <prerequisites-var> <exclude-system> <recurse>
<exepath> <dirs> [<rpaths>])
Gets 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.
The arguments are:
``<target>``
The full path to an executable or shared library file.
``<prerequisites-var>``
The name of a CMake variable to contain the results.
``<exclude-system>``
If set to 1 system prerequisites will be excluded, if set to 0 they will be
included.
``<recurse>``
If set to 1 all prerequisites will be found recursively, if set to 0 only
direct prerequisites are listed.
``<exepath>``
The path to the top level executable used for ``@executable_path``
replacement on Apple operating systems.
``<dirs>``
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...
``<rpaths>``
Optional run-time search paths for an executable file or library to help
find files.
.. versionadded:: 3.14
The variable ``GET_PREREQUISITES_VERBOSE`` can be set to true before calling
this function to enable verbose output.
.. command:: list_prerequisites
.. code-block:: cmake
list_prerequisites(<target> [<recurse> [<exclude-system> [<verbose>]]])
Prints a message listing the prerequisites of ``<target>``.
The arguments are:
``<target>``
The name of a shared library or executable target or the full path to a
shared library or executable file.
``<recurse>``
If set to 1 all prerequisites will be found recursively, if set to 0 only
direct prerequisites are listed.
``<exclude-system>``
If set to 1 system prerequisites will be excluded, if set to 0 they will be
included.
``<verbose>``
If set to 0 only the full path names of the prerequisites are printed. If
set to 1 extra information will be displayed.
.. command:: list_prerequisites_by_glob
.. code-block:: cmake
list_prerequisites_by_glob(<GLOB|GLOB_RECURSE>
<glob-exp>
[<optional-args>...])
Prints the prerequisites of shared library and executable files matching a
globbing pattern.
The arguments are:
``GLOB`` or ``GLOB_RECURSE``
The globbing mode, whether to traverse only the match or also its
subdirectories recursively.
``<glob-exp>``
A globbing expression used with :command:`file(GLOB)` or
:command:`file(GLOB_RECURSE)` to retrieve a list of matching files. If a
matching file is executable, its prerequisites are listed.
``<optional-args>...``
Any additional (optional) arguments provided are passed along as the
optional arguments to the ``list_prerequisite()`` calls.
.. command:: gp_append_unique
.. code-block:: cmake
gp_append_unique(<list-var> <value>)
Appends ``<value>`` to the list variable ``<list-var>`` only if the value is
not already in the list.
.. command:: is_file_executable
.. code-block:: cmake
is_file_executable(<file> <result-var>)
Sets ``<result-var>`` to 1 if ``<file>`` is a binary executable; otherwise
sets it to 0.
.. command:: gp_item_default_embedded_path
.. code-block:: cmake
gp_item_default_embedded_path(<item> <default-embedded-path-var>)
Determines the reference path for ``<item>`` when it is embedded inside a
bundle and stores it to a variable ``<default-embedded-path-var>``.
Projects can override this function by defining a custom
``gp_item_default_embedded_path_override()`` function.
.. command:: gp_resolve_item
.. code-block:: cmake
gp_resolve_item(<context> <item> <exepath> <dirs> <resolved-item-var>
[<rpaths>])
Resolves a given ``<item>`` into an existing full path file and stores it to a
``<resolved-item-var>`` variable.
The arguments are:
``<context>``
The path to the top level loading path used for ``@loader_path`` replacement
on Apple operating systems. When resolving item, ``@loader_path``
references will be resolved relative to the directory of the given context
value (presumably another library).
``<item>``
The item to resolve.
``<exepath>``
See the argument description in :command:`get_prerequisites`.
``<dirs>``
See the argument description in :command:`get_prerequisites`.
``<resolved-item-var>``
The result variable where the resolved item is stored into.
``<rpaths>``
See the argument description in :command:`get_prerequisites`.
Projects can override this function by defining a custom
``gp_resolve_item_override()`` function.
.. command:: gp_resolved_file_type
.. code-block:: cmake
gp_resolved_file_type(<original-file> <file> <exepath> <dirs> <type-var>
[<rpaths>])
Determines the type of ``<file>`` with respect to ``<original-file>``. The
resulting type of prerequisite is stored in the ``<type-var>`` variable.
Use ``<exepath>`` and ``<dirs>`` if necessary to resolve non-absolute
``<file>`` values -- but only for non-embedded items.
``<rpaths>``
See the argument description in :command:`get_prerequisites`.
The ``<type-var>`` variable will be set to one of the following values:
* ``system``
* ``local``
* ``embedded``
* ``other``
Projects can override this function by defining a custom
``gp_resolved_file_type_override()`` function.
.. command:: gp_file_type
.. code-block:: cmake
gp_file_type(<original-file> <file> <type-var>)
Determines the type of ``<file>`` with respect to ``<original-file>``. The
resulting type of prerequisite is stored in the ``<type-var>`` variable.
The ``<type-var>`` variable will be set to one of the following values:
* ``system``
* ``local``
* ``embedded``
* ``other``
Examples
^^^^^^^^
Printing all dependencies of a shared library, including system libraries, with
verbose output:
.. code-block:: cmake
include(GetPrerequisites)
list_prerequisites("path/to/libfoo.dylib" 1 0 1)
#]=======================================================================]
function(gp_append_unique list_var value)
if(NOT value IN_LIST ${list_var})
set(${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(${result_var} 1 PARENT_SCOPE)
return()
endif()
else()
message(STATUS "warning: No 'file' command, skipping execute_process...")
endif()
endif()
endfunction()
function(gp_item_default_embedded_path item default_embedded_path_var)
# On Windows and Linux, "embed" prerequisites in the same directory
# as the executable by default:
#
set(path "@executable_path")
# On the Mac, relative to the executable depending on the type
# of the thing we are embedding:
#
if(APPLE)
#
# The assumption here is that all executables in the bundle will be
# in same-level-directories inside the bundle. The parent directory
# of an executable inside the bundle should be MacOS or a sibling of
# MacOS and all embedded paths returned from here will begin with
# "@executable_path/../" and will work from all executables in all
# such same-level-directories inside the bundle.
#
# By default, embed things right next to the main bundle executable:
#
set(path "@executable_path/../../Contents/MacOS")
# Embed frameworks and .dylibs in the embedded "Frameworks" directory
# (sibling of MacOS):
#
if(item MATCHES "[^/]+\\.framework/" OR item MATCHES "\\.dylib$")
set(path "@executable_path/../Frameworks")
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} ${dirs} /usr/lib)
get_filename_component(basename_item "${item}" NAME)
find_file(ri "${basename_item}" PATHS ${exepath} ${dirs} NO_DEFAULT_PATH)
find_file(ri "${basename_item}" PATHS /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/|/libx32/|/lib64/|/usr/lib/|/usr/lib32/|/usr/libx32/|/usr/lib64/|/usr/X11R6/|/usr/bin/)" OR
resolved_file MATCHES "/cce/.*/lib/lib[^/]+\.so\\.[0-9][^/]*$")
set(is_system 1)
endif()
endif()
if(APPLE)
if(resolved_file MATCHES "^(/System/Library/|/usr/lib/)")
set(is_system 1)
endif()
endif()
if(WIN32)
string(TOLOWER "$ENV{SystemRoot}" sysroot)
file(TO_CMAKE_PATH "${sysroot}" sysroot)
string(TOLOWER "$ENV{windir}" windir)
file(TO_CMAKE_PATH "${windir}" windir)
if(lower MATCHES "^(${sysroot}/sys(tem|wow)|${windir}/sys(tem|wow)|(.*/)*(msvc|api-ms-win-|vcruntime)[^/]+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 "^(${sysroot}/sys(tem|wow)|${windir}/sys(tem|wow)|(.*/)*(msvc|api-ms-win-|vcruntime)[^/]+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|api-ms-win-|vcruntime)[^/]+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 "${ARGV6}")
else()
set(rpaths "")
endif()
if(GET_PREREQUISITES_VERBOSE)
set(verbose 1)
endif()
if(NOT IS_ABSOLUTE "${target}")
message("warning: target '${target}' is not absolute...")
endif()
if(NOT EXISTS "${target}")
message("warning: target '${target}' does not exist...")
return()
endif()
# Check for a script by extension (.bat,.sh,...) or if the file starts with "#!" (shebang)
file(READ ${target} file_contents LIMIT 5)
if(target MATCHES "\\.(bat|c?sh|bash|ksh|cmd)$" OR file_contents MATCHES "^#!")
message(STATUS "GetPrerequisites(${target}) : ignoring script file")
# Clear var
set(${prerequisites_var} "" PARENT_SCOPE)
return()
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"
)
# <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 ${gp_cmd_paths})
if(gp_dumpbin)
set(gp_tool "dumpbin")
elseif(CMAKE_OBJDUMP) # Try harder. Maybe we're on MinGW
set(gp_tool "${CMAKE_OBJDUMP}")
else()
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 MATCHES "ldd$")
set(gp_cmd_args "")
set(gp_regex "^[\t ]*[^\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 MATCHES "otool$")
set(gp_cmd_args "-L")
set(gp_regex "^\t([^\t]+) \\(compatibility version ([0-9]+.[0-9]+.[0-9]+), current version ([0-9]+.[0-9]+.[0-9]+)(, weak)?\\)${eol_char}$")
set(gp_regex_error "")
set(gp_regex_fallback "")
set(gp_regex_cmp_count 3)
elseif(gp_tool MATCHES "dumpbin$")
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 MATCHES "objdump(\\.exe)?$")
set(gp_cmd_args "-p")
set(gp_regex "^[\t ]*DLL Name: (.*\\.[Dd][Ll][Ll])${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
if(WIN32)
find_program(gp_grep_cmd findstr)
set(gp_grep_cmd_arg "")
else()
find_program(gp_grep_cmd grep)
set(gp_grep_cmd_arg "-a")
endif()
if(gp_grep_cmd)
set(gp_cmd_maybe_filter COMMAND ${gp_grep_cmd} "${gp_grep_cmd_arg}" "^[[: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 MATCHES "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 MATCHES "ldd$")
set(old_ld_env "$ENV{LD_LIBRARY_PATH}")
set(new_ld_env "${exepath}")
foreach(dir ${dirs})
string(APPEND new_ld_env ":${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}
${gp_cmd_maybe_filter}
RESULT_VARIABLE gp_rv
OUTPUT_VARIABLE gp_cmd_ov
ERROR_VARIABLE gp_ev
)
if(gp_tool MATCHES "dumpbin$")
# Exclude delay load dependencies under windows (they are listed in dumpbin output after the message below)
string(FIND "${gp_cmd_ov}" "Image has the following delay load dependencies" gp_delayload_pos)
if (${gp_delayload_pos} GREATER -1)
string(SUBSTRING "${gp_cmd_ov}" 0 ${gp_delayload_pos} gp_cmd_ov_no_delayload_deps)
string(SUBSTRING "${gp_cmd_ov}" ${gp_delayload_pos} -1 gp_cmd_ov_delayload_deps)
if (verbose)
message(STATUS "GetPrerequisites(${target}) : ignoring the following delay load dependencies :\n ${gp_cmd_ov_delayload_deps}")
endif()
set(gp_cmd_ov ${gp_cmd_ov_no_delayload_deps})
endif()
endif()
if(NOT gp_rv STREQUAL "0")
if(gp_tool MATCHES "dumpbin$")
# 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 MATCHES "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 MATCHES "otool$")
execute_process(
COMMAND ${gp_cmd} -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 "${rpaths}")
if(EXISTS "${resolved_item}")
# Recurse only if we could resolve the item.
# Otherwise the prerequisites_var list will be cleared
set(unseen_prereqs ${unseen_prereqs} "${resolved_item}")
endif()
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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