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492 lines
16 KiB
CMake
492 lines
16 KiB
CMake
# GetPrerequisites.cmake
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#
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# This script provides functions to list the .dll, .dylib or .so files that an
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# executable or shared library file depends on. (Its prerequisites.)
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#
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# It uses various tools to obtain the list of required shared library files:
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# dumpbin (Windows)
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# ldd (Linux/Unix)
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# otool (Mac OSX)
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#
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# The following functions are provided by this script:
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# gp_append_unique
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# gp_file_type
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# is_file_executable
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# get_prerequisites
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# list_prerequisites
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#
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# Requires CMake 2.5 or greater because it uses function, break, return and
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# PARENT_SCOPE.
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#
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cmake_minimum_required(VERSION 2.5 FATAL_ERROR)
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# gp_append_unique list_var value
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#
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# Append value to the list variable ${list_var} only if the value is not
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# already in the list.
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#
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function(gp_append_unique list_var value)
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set(contains 0)
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foreach(item ${${list_var}})
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if("${item}" STREQUAL "${value}")
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set(contains 1)
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break()
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endif("${item}" STREQUAL "${value}")
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endforeach(item)
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if(NOT contains)
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set(${list_var} ${${list_var}} "${value}" PARENT_SCOPE)
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endif(NOT contains)
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endfunction(gp_append_unique)
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# gp_file_type original_file file type_var
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#
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# Return the type of ${file} with respect to ${original_file}. String
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# describing type of prerequisite is returned in variable named ${type_var}.
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#
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# Possible types are:
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# system
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# local
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# embedded
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# other
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#
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function(gp_file_type original_file file type_var)
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set(is_embedded 0)
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set(is_local 0)
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set(is_system 0)
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string(TOLOWER "${original_file}" original_lower)
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string(TOLOWER "${file}" lower)
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if("${file}" MATCHES "^@(executable|loader)_path")
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set(is_embedded 1)
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endif("${file}" MATCHES "^@(executable|loader)_path")
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if(NOT is_embedded)
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if("${file}" MATCHES "^(/System/Library/|/usr/lib/)")
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set(is_system 1)
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endif("${file}" MATCHES "^(/System/Library/|/usr/lib/)")
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if(WIN32)
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string(TOLOWER "$ENV{SystemRoot}" sysroot)
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string(REGEX REPLACE "\\\\" "/" sysroot "${sysroot}")
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string(TOLOWER "$ENV{windir}" windir)
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string(REGEX REPLACE "\\\\" "/" windir "${windir}")
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if("${lower}" MATCHES "^(${sysroot}/system|${windir}/system|msvc[^/]+dll)")
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set(is_system 1)
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endif("${lower}" MATCHES "^(${sysroot}/system|${windir}/system|msvc[^/]+dll)")
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endif(WIN32)
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if(NOT is_system)
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get_filename_component(original_path "${original_lower}" PATH)
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get_filename_component(path "${lower}" PATH)
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if("${original_path}" STREQUAL "${path}")
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set(is_local 1)
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endif("${original_path}" STREQUAL "${path}")
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endif(NOT is_system)
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endif(NOT is_embedded)
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# Return type string based on computed booleans:
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#
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set(type "other")
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if(is_system)
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set(type "system")
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else(is_system)
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if(is_embedded)
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set(type "embedded")
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else(is_embedded)
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if(is_local)
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set(type "local")
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endif(is_local)
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endif(is_embedded)
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endif(is_system)
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set(${type_var} "${type}" PARENT_SCOPE)
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endfunction(gp_file_type)
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# is_file_executable file result_var
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#
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# Return 1 in ${result_var} if ${file} is a binary executable.
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#
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# Return 0 in ${result_var} otherwise.
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#
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function(is_file_executable file result_var)
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#
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# A file is not executable until proven otherwise:
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#
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set(${result_var} 0 PARENT_SCOPE)
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get_filename_component(file_full "${file}" ABSOLUTE)
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string(TOLOWER "${file_full}" file_full_lower)
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# If file name ends in .exe or .dll on Windows, *assume* executable:
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#
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if(WIN32)
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if("${file_full_lower}" MATCHES "\\.(exe|dll)$")
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set(${result_var} 1 PARENT_SCOPE)
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return()
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endif("${file_full_lower}" MATCHES "\\.(exe|dll)$")
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# A clause could be added here that uses output or return value of dumpbin
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# to determine ${result_var}. In 95%+ practical cases, the exe|dll name
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# match will be sufficient...
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#
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endif(WIN32)
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# Use the information returned from the Unix shell command "file" to
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# determine if ${file_full} should be considered an executable file...
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#
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# If the file command's output contains "executable" and does *not* contain
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# "text" then it is likely an executable suitable for prerequisite analysis
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# via the get_prerequisites macro.
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#
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if(UNIX)
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if(NOT file_cmd)
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find_program(file_cmd "file")
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endif(NOT file_cmd)
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if(file_cmd)
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execute_process(COMMAND "${file_cmd}" "${file_full}"
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OUTPUT_VARIABLE file_ov
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OUTPUT_STRIP_TRAILING_WHITESPACE
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)
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# Replace the name of the file in the output with a placeholder token
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# (the string " _file_full_ ") so that just in case the path name of
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# the file contains the word "text" or "executable" we are not fooled
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# into thinking "the wrong thing" because the file name matches the
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# other 'file' command output we are looking for...
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#
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string(REPLACE "${file_full}" " _file_full_ " file_ov "${file_ov}")
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string(TOLOWER "${file_ov}" file_ov)
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#message(STATUS "file_ov='${file_ov}'")
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if("${file_ov}" MATCHES "executable")
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#message(STATUS "executable!")
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if("${file_ov}" MATCHES "text")
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#message(STATUS "but text, so *not* a binary executable!")
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else("${file_ov}" MATCHES "text")
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set(${result_var} 1 PARENT_SCOPE)
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return()
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endif("${file_ov}" MATCHES "text")
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endif("${file_ov}" MATCHES "executable")
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else(file_cmd)
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message(STATUS "warning: No 'file' command, skipping execute_process...")
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endif(file_cmd)
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endif(UNIX)
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endfunction(is_file_executable)
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# get_prerequisites target prerequisites_var exclude_system recurse
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#
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# Get the list of shared library files required by ${target}. The list in
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# the variable named ${prerequisites_var} should be empty on first entry to
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# this function. On exit, ${prerequisites_var} will contain the list of
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# required shared library files.
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#
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# target is the full path to an executable file
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#
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# prerequisites_var is the name of a CMake variable to contain the results
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#
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# exclude_system is 0 or 1: 0 to include "system" prerequisites , 1 to
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# exclude them
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#
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# recurse is 0 or 1: 0 for direct prerequisites only, 1 for all prerequisites
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# recursively
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#
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# optional ARGV4 (verbose) is 0 or 1: 0 to skip informational message output,
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# 1 to print it
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#
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function(get_prerequisites target prerequisites_var exclude_system recurse)
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# set(verbose 0)
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# if(NOT "${ARGV4}" STREQUAL "")
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# message(STATUS "ARGV4='${ARGV4}'")
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# set(verbose "${ARGV4}")
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# endif(NOT "${ARGV4}" STREQUAL "")
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# message(STATUS "verbose='${verbose}'")
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set(verbose 0)
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set(eol_char "E")
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# <setup-gp_tool-vars>
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#
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# Try to choose the right tool by default. Caller can set gp_tool prior to
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# calling this function to force using a different tool.
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#
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if("${gp_tool}" STREQUAL "")
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set(gp_tool "ldd")
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if(APPLE)
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set(gp_tool "otool")
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endif(APPLE)
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if(WIN32)
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set(gp_tool "dumpbin")
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endif(WIN32)
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endif("${gp_tool}" STREQUAL "")
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set(gp_tool_known 0)
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if("${gp_tool}" STREQUAL "ldd")
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set(gp_cmd_args "")
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set(gp_regex "^\t([\t ]+)[\t ].*${eol_char}$")
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set(gp_regex_cmp_count 1)
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set(gp_tool_known 1)
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endif("${gp_tool}" STREQUAL "ldd")
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if("${gp_tool}" STREQUAL "otool")
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set(gp_cmd_args "-L")
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set(gp_regex "^\t([^\t]+) \\(compatibility version ([0-9]+.[0-9]+.[0-9]+), current version ([0-9]+.[0-9]+.[0-9]+)\\)${eol_char}$")
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set(gp_regex_cmp_count 3)
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set(gp_tool_known 1)
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endif("${gp_tool}" STREQUAL "otool")
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if("${gp_tool}" STREQUAL "dumpbin")
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set(gp_cmd_args "/dependents")
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set(gp_regex "^ ([^ ].*[Dd][Ll][Ll])${eol_char}$")
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set(gp_regex_cmp_count 1)
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set(gp_tool_known 1)
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endif("${gp_tool}" STREQUAL "dumpbin")
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if(NOT gp_tool_known)
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message(STATUS "warning: gp_tool='${gp_tool}' is an unknown tool...")
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message(STATUS "CMake function get_prerequisites needs more code to handle '${gp_tool}'")
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message(STATUS "Valid gp_tool values are dumpbin, ldd and otool.")
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return()
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endif(NOT gp_tool_known)
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set(gp_cmd_paths ${gp_cmd_paths}
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"C:/Program Files/Microsoft Visual Studio 9.0/VC/bin"
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"C:/Program Files (x86)/Microsoft Visual Studio 9.0/VC/bin"
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"C:/Program Files/Microsoft Visual Studio 8/VC/BIN"
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"C:/Program Files (x86)/Microsoft Visual Studio 8/VC/BIN"
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"C:/Program Files/Microsoft Visual Studio .NET 2003/VC7/BIN"
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"C:/Program Files (x86)/Microsoft Visual Studio .NET 2003/VC7/BIN"
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"/usr/local/bin"
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"/usr/bin"
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)
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find_program(gp_cmd ${gp_tool} PATHS ${gp_cmd_paths})
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if(NOT gp_cmd)
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message(STATUS "warning: could not find '${gp_tool}' - cannot analyze prerequisites...")
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return()
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endif(NOT gp_cmd)
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if("${gp_tool}" STREQUAL "dumpbin")
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# When running dumpbin, it also needs the "Common7/IDE" directory in the
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# PATH. It will already be in the PATH if being run from a Visual Studio
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# command prompt. Add it to the PATH here in case we are running from a
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# different command prompt.
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#
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get_filename_component(gp_cmd_dir "${gp_cmd}" PATH)
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get_filename_component(gp_cmd_dlls_dir "${gp_cmd_dir}/../../Common7/IDE" ABSOLUTE)
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if(EXISTS "${gp_cmd_dlls_dir}")
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set(ENV{PATH} "$ENV{PATH};${gp_cmd_dlls_dir}")
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endif(EXISTS "${gp_cmd_dlls_dir}")
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endif("${gp_tool}" STREQUAL "dumpbin")
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#
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# </setup-gp_tool-vars>
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# Track new prerequisites at each new level of recursion. Start with an
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# empty list at each level:
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#
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set(unseen_prereqs)
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# Run gp_cmd on the target:
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#
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execute_process(
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COMMAND ${gp_cmd} ${gp_cmd_args} ${target}
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OUTPUT_VARIABLE gp_cmd_ov
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)
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if(verbose)
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message(STATUS "<RawOutput cmd='${gp_cmd} ${gp_cmd_args} ${target}'>")
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message(STATUS "gp_cmd_ov='${gp_cmd_ov}'")
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message(STATUS "</RawOutput>")
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endif(verbose)
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get_filename_component(target_dir "${target}" PATH)
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# Convert to a list of lines:
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#
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string(REGEX REPLACE ";" "\\\\;" candidates "${gp_cmd_ov}")
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string(REGEX REPLACE "\n" "${eol_char};" candidates "${candidates}")
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# Analyze each line for file names that match the regular expression:
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#
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foreach(candidate ${candidates})
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if("${candidate}" MATCHES "${gp_regex}")
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# Extract information from each candidate:
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string(REGEX REPLACE "${gp_regex}" "\\1" raw_item "${candidate}")
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if(gp_regex_cmp_count GREATER 1)
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string(REGEX REPLACE "${gp_regex}" "\\2" raw_compat_version "${candidate}")
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string(REGEX REPLACE "^([0-9]+)\\.([0-9]+)\\.([0-9]+)$" "\\1" compat_major_version "${raw_compat_version}")
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string(REGEX REPLACE "^([0-9]+)\\.([0-9]+)\\.([0-9]+)$" "\\2" compat_minor_version "${raw_compat_version}")
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string(REGEX REPLACE "^([0-9]+)\\.([0-9]+)\\.([0-9]+)$" "\\3" compat_patch_version "${raw_compat_version}")
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endif(gp_regex_cmp_count GREATER 1)
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if(gp_regex_cmp_count GREATER 2)
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string(REGEX REPLACE "${gp_regex}" "\\3" raw_current_version "${candidate}")
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string(REGEX REPLACE "^([0-9]+)\\.([0-9]+)\\.([0-9]+)$" "\\1" current_major_version "${raw_current_version}")
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string(REGEX REPLACE "^([0-9]+)\\.([0-9]+)\\.([0-9]+)$" "\\2" current_minor_version "${raw_current_version}")
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string(REGEX REPLACE "^([0-9]+)\\.([0-9]+)\\.([0-9]+)$" "\\3" current_patch_version "${raw_current_version}")
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endif(gp_regex_cmp_count GREATER 2)
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# Using find_program on Windows will find dll files that are in the PATH.
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# (Converting simple file names into full path names if found.)
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#
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set(item "item-NOTFOUND")
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find_program(item "${raw_item}" PATHS "${target_dir}")
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if(NOT item)
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set(item "${raw_item}")
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endif(NOT item)
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if(verbose)
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message(STATUS "raw_item='${raw_item}'")
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message(STATUS "item='${item}'")
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endif(verbose)
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# Add each item unless it is excluded:
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#
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set(add_item 1)
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if(${exclude_system})
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set(type "")
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gp_file_type("${target}" "${item}" type)
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if("${type}" STREQUAL "system")
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set(add_item 0)
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endif("${type}" STREQUAL "system")
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endif(${exclude_system})
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if(add_item)
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list(LENGTH ${prerequisites_var} list_length_before_append)
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gp_append_unique(${prerequisites_var} "${item}")
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list(LENGTH ${prerequisites_var} list_length_after_append)
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if(${recurse})
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# If item was really added, this is the first time we have seen it.
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# Add it to unseen_prereqs so that we can recursively add *its*
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# prerequisites...
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#
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if(NOT list_length_before_append EQUAL list_length_after_append)
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set(unseen_prereqs ${unseen_prereqs} "${item}")
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endif(NOT list_length_before_append EQUAL list_length_after_append)
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endif(${recurse})
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endif(add_item)
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else("${candidate}" MATCHES "${gp_regex}")
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if(verbose)
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message(STATUS "ignoring non-matching line: '${candidate}'")
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endif(verbose)
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endif("${candidate}" MATCHES "${gp_regex}")
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endforeach(candidate)
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list(SORT ${prerequisites_var})
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if(${recurse})
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set(more_inputs ${unseen_prereqs})
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foreach(input ${more_inputs})
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get_prerequisites("${input}" ${prerequisites_var} ${exclude_system} ${recurse})
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endforeach(input)
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endif(${recurse})
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set(${prerequisites_var} ${${prerequisites_var}} PARENT_SCOPE)
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endfunction(get_prerequisites)
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# list_prerequisites target all exclude_system verbose
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#
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# ARGV0 (target) is the full path to an executable file
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#
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# optional ARGV1 (all) is 0 or 1: 0 for direct prerequisites only,
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# 1 for all prerequisites recursively
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#
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# optional ARGV2 (exclude_system) is 0 or 1: 0 to include "system"
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# prerequisites , 1 to exclude them
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#
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# optional ARGV3 (verbose) is 0 or 1: 0 to print only full path
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# names of prerequisites, 1 to print extra information
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#
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function(list_prerequisites target)
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if("${ARGV1}" STREQUAL "")
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set(all 1)
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else("${ARGV1}" STREQUAL "")
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set(all "${ARGV1}")
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endif("${ARGV1}" STREQUAL "")
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if("${ARGV2}" STREQUAL "")
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set(exclude_system 0)
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else("${ARGV2}" STREQUAL "")
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set(exclude_system "${ARGV2}")
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endif("${ARGV2}" STREQUAL "")
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if("${ARGV3}" STREQUAL "")
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set(verbose 0)
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else("${ARGV3}" STREQUAL "")
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set(verbose "${ARGV3}")
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endif("${ARGV3}" STREQUAL "")
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set(count 0)
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set(count_str "")
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set(print_count "${verbose}")
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set(print_prerequisite_type "${verbose}")
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set(print_target "${verbose}")
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set(type_str "")
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set(prereqs "")
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get_prerequisites("${target}" prereqs ${exclude_system} ${all})
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if(print_target)
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message(STATUS "File '${target}' depends on:")
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endif(print_target)
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foreach(d ${prereqs})
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math(EXPR count "${count} + 1")
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if(print_count)
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set(count_str "${count}. ")
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endif(print_count)
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if(print_prerequisite_type)
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gp_file_type("${target}" "${d}" type)
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set(type_str " (${type})")
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endif(print_prerequisite_type)
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message(STATUS "${count_str}${d}${type_str}")
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endforeach(d)
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endfunction(list_prerequisites)
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# list_prerequisites_by_glob glob_arg glob_exp
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#
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# glob_arg is GLOB or GLOB_RECURSE
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#
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# glob_exp is a globbing expression used with "file(GLOB" to retrieve a list
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# of matching files. If a matching file is executable, its prerequisites are
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# listed.
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#
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# Any additional (optional) arguments provided are passed along as the
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# optional arguments to the list_prerequisites calls.
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#
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function(list_prerequisites_by_glob glob_arg glob_exp)
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message(STATUS "=============================================================================")
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message(STATUS "List prerequisites of executables matching ${glob_arg} '${glob_exp}'")
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message(STATUS "")
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file(${glob_arg} file_list ${glob_exp})
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foreach(f ${file_list})
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is_file_executable("${f}" is_f_executable)
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if(is_f_executable)
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message(STATUS "=============================================================================")
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list_prerequisites("${f}" ${ARGN})
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message(STATUS "")
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endif(is_f_executable)
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endforeach(f)
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endfunction(list_prerequisites_by_glob)
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