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CMake/Modules/DeployQt4.cmake
Mike McQuaid 06180459cc Add DeployQt4 module. 
Add a module that gives better support to BundleUtilities to handle
Qt plugins and deploy Qt applications.
2011-10-03 11:01:48 -06:00

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CMake
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# - Functions to help assemble a standalone Qt4 executable.
# A collection of CMake utility functions useful for deploying
# Qt4 executables.
#
# The following functions are provided by this module:
# write_qt4_conf
# resolve_qt4_paths
# fixup_qt4_executable
# install_qt4_plugin_path
# install_qt4_plugin
# install_qt4_executable
# Requires CMake 2.6 or greater because it uses function and
# PARENT_SCOPE. Also depends on BundleUtilities.cmake.
#
# WRITE_QT4_CONF(<qt_conf_dir> <qt_conf_contents>)
# Writes a qt.conf file with the <qt_conf_contents> into <qt_conf_dir>.
#
# RESOLVE_QT4_PATHS(<paths_var> [<executable_path>])
# Loop through <paths_var> list and if any don't exist resolve them
# relative to the <executable_path> (if supplied) or the CMAKE_INSTALL_PREFIX.
#
# FIXUP_QT4_EXECUTABLE(<executable> [<qtplugins> <libs> <dirs> <plugins_dir> <request_qt_conf>])
# Copies Qt plugins, writes a Qt configuration file (if needed) and fixes up a
# Qt4 executable using BundleUtilities so it is standalone and can be
# drag-and-drop copied to another machine as long as all of the system
# libraries are compatible.
#
# <executable> should point to the executable to be fixed-up.
#
# <qtplugins> should contain a list of the names or paths of any Qt plugins
# to be installed.
#
# <libs> will be passed to BundleUtilities and should be a list of any already
# installed plugins, libraries or executables to also be fixed-up.
#
# <dirs> will be passed to BundleUtilities and should contain and directories
# to be searched to find library dependencies.
#
# <plugins_dir> allows an custom plugins directory to be used.
#
# <request_qt_conf> will force a qt.conf file to be written even if not needed.
#
# INSTALL_QT4_PLUGIN_PATH(plugin executable copy installed_plugin_path_var <plugins_dir> <component> <configurations>)
# Install (or copy) a resolved <plugin> to the default plugins directory
# (or <plugins_dir>) relative to <executable> and store the result in
# <installed_plugin_path_var>.
#
# If <copy> is set to TRUE then the plugins will be copied rather than
# installed. This is to allow this module to be used at CMake time rather than
# install time.
#
# If <component> is set then anything installed will use this COMPONENT.
#
# INSTALL_QT4_PLUGIN(plugin executable copy installed_plugin_path_var <plugins_dir> <component>)
# Install (or copy) an unresolved <plugin> to the default plugins directory
# (or <plugins_dir>) relative to <executable> and store the result in
# <installed_plugin_path_var>. See documentation of INSTALL_QT4_PLUGIN_PATH.
#
# INSTALL_QT4_EXECUTABLE(<executable> <qtplugins> [<libs> <dirs> <plugins_dir> <request_qt_conf>])
# Installs Qt plugins, writes a Qt configuration file (if needed) and fixes up
# a Qt4 executable using BundleUtilities so it is standalone and can be
# drag-and-drop copied to another machine as long as all of the system
# libraries are compatible. The executable will be fixed-up at install time.
# See documentation of FIXUP_QT4_BUNDLE.
#=============================================================================
# Copyright 2011 Mike McQuaid <mike@mikemcquaid.com>
#
# 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.)
# The functions defined in this file depend on the fixup_bundle function
# (and others) found in BundleUtilities.cmake
include(BundleUtilities)
set(DeployQt4_cmake_dir "${CMAKE_CURRENT_LIST_DIR}")
function(write_qt4_conf qt_conf_dir qt_conf_contents)
set(qt_conf_path "${qt_conf_dir}/qt.conf")
message(STATUS "Writing ${qt_conf_path}")
file(WRITE "${qt_conf_path}" "${qt_conf_contents}")
endfunction()
function(resolve_qt4_paths paths_var)
set(executable_path ${ARGV1})
set(paths_resolved)
foreach(path ${${paths_var}})
if(EXISTS "${path}")
list(APPEND paths_resolved "${path}")
else()
if(${executable_path})
list(APPEND paths_resolved "${executable_path}/${path}")
else()
list(APPEND paths_resolved "\${CMAKE_INSTALL_PREFIX}/${path}")
endif()
endif()
endforeach()
set(${paths_var} ${paths_resolved} PARENT_SCOPE)
endfunction()
function(fixup_qt4_executable executable qtplugins)
set(libs ${ARGV2})
set(dirs ${ARGV3})
set(plugins_dir ${ARGV4})
set(request_qt_conf ${ARGV5})
message(STATUS "fixup_qt4_executable")
message(STATUS " executable='${executable}'")
message(STATUS " qtplugins='${qtplugins}'")
message(STATUS " libs='${libs}'")
message(STATUS " dirs='${dirs}'")
message(STATUS " plugins_dir='${plugins_dir}'")
message(STATUS " request_qt_conf='${request_qt_conf}'")
if(QT_LIBRARY_DIR)
list(APPEND dirs "${QT_LIBRARY_DIR}")
endif()
if(APPLE)
set(qt_conf_dir "${executable}/Contents/Resources")
set(executable_path "${executable}")
set(write_qt_conf TRUE)
else()
get_filename_component(executable_path "${executable}" PATH)
if(NOT executable_path)
set(executable_path ".")
endif()
set(qt_conf_dir "${executable_path}")
set(write_qt_conf ${request_qt_conf})
endif()
foreach(plugin ${qtplugins})
set(installed_plugin_path "")
install_qt4_plugin("${plugin}" "${plugins_dir}" "${executable}" 1 installed_plugin_path)
list(APPEND libs ${installed_plugin_path})
endforeach()
foreach(lib ${libs})
if(NOT EXISTS "${lib}")
message(FATAL_ERROR "Library does not exist: ${lib}")
endif()
endforeach()
resolve_qt4_paths(libs "${executable_path}")
resolve_qt4_paths(dirs "${executable_path}")
if(write_qt_conf)
set(qt_conf_contents "[Paths]\nPlugins = ${plugins_dir}")
write_qt4_conf("${qt_conf_dir}" "${qt_conf_contents}")
endif()
fixup_bundle("${executable}" "${libs}" "${dirs}")
endfunction()
function(install_qt4_plugin_path plugin executable copy installed_plugin_path_var)
set(plugins_dir ${ARGV4})
set(component ${ARGV5})
set(configurations ${ARGV6})
if(EXISTS "${plugin}")
if(plugins_dir)
set(plugins_dir "${plugins_dir}")
else()
if(APPLE)
set(plugins_dir "PlugIns")
else()
set(plugins_dir "plugins")
endif()
endif()
if(APPLE)
set(plugins_path "${executable}/Contents/${plugins_dir}")
else()
get_filename_component(executable_path "${executable}" PATH)
if(NOT executable_path)
set(executable_path ".")
endif()
set(plugins_path "${executable_path}/${plugins_dir}")
endif()
set(plugin_group "")
get_filename_component(plugin_path "${plugin}" PATH)
get_filename_component(plugin_parent_path "${plugin_path}" PATH)
get_filename_component(plugin_parent_dir_name "${plugin_parent_path}" NAME)
get_filename_component(plugin_name "${plugin}" NAME)
string(TOLOWER "${plugin_parent_dir_name}" plugin_parent_dir_name)
if("${plugin_parent_dir_name}" STREQUAL "plugins")
get_filename_component(plugin_group "${plugin_path}" NAME)
set(${plugin_group_var} "${plugin_group}")
endif()
set(plugins_path "${plugins_path}/${plugin_group}")
if(${copy})
file(MAKE_DIRECTORY "${plugins_path}")
file(COPY "${plugin}" DESTINATION "${plugins_path}")
else()
if(configurations AND (CMAKE_CONFIGURATION_TYPES OR CMAKE_BUILD_TYPE))
set(configurations CONFIGURATIONS ${configurations})
endif()
if(component)
set(component COMPONENT ${component})
endif()
install(FILES "${plugin}" DESTINATION "${plugins_path}" ${configurations} ${component})
endif()
set(${installed_plugin_path_var} ${${installed_path_var}} "${plugins_path}/${plugin_name}" PARENT_SCOPE)
endif()
endfunction()
function(install_qt4_plugin plugin executable copy installed_plugin_path_var)
set(plugins_dir ${ARGV4})
set(component ${ARGV5})
if(EXISTS "${plugin}")
install_qt4_plugin_path("${plugin}" "${executable}" "${copy}" "${installed_plugin_path_var}" "${plugins_dir}" "${component}")
else()
if(QT_IS_STATIC)
string(TOUPPER "QT_${plugin}_LIBRARY" plugin_var)
else()
string(TOUPPER "QT_${plugin}_PLUGIN" plugin_var)
endif()
set(plugin_release "${${plugin_var}_RELEASE}")
set(plugin_debug "${${plugin_var}_DEBUG}")
if(NOT EXISTS "${plugin_release}" AND NOT EXISTS "${plugin_debug}")
message(WARNING "Qt plugin \"${plugin}\" not recognized or found.")
endif()
install_qt4_plugin_path("${plugin_release}" "${executable}" "${copy}" "${installed_plugin_path_var}" "${plugins_dir}" "${component}" "Release|RelWithDebInfo|MinSizeRel")
install_qt4_plugin_path("${plugin_debug}" "${executable}" "${copy}" "${installed_plugin_path_var}" "${plugins_dir}" "${component}" "Debug")
endif()
set(installed_plugin_path_var "${installed_plugin_path_var}" PARENT_SCOPE)
endfunction()
function(install_qt4_executable executable)
set(qtplugins ${ARGV1})
set(libs ${ARGV2})
set(dirs ${ARGV3})
set(plugins_dir ${ARGV4})
set(request_qt_conf ${ARGV5})
set(plugin_component ${ARGV6})
if(QT_LIBRARY_DIR)
list(APPEND dirs "${QT_LIBRARY_DIR}")
endif()
get_filename_component(executable_absolute "${executable}" ABSOLUTE)
gp_file_type("${executable_absolute}" "${QT_QTCORE_LIBRARY}" qtcore_type)
if(qtcore_type STREQUAL "system")
set(qt_plugins_dir "")
endif()
if(NOT qtplugins AND QT_LIBRARIES_PLUGINS)
set(qtplugins "${QT_LIBRARIES_PLUGINS}")
endif()
foreach(plugin ${qtplugins})
set(installed_plugin_paths "")
install_qt4_plugin("${plugin}" "${executable}" 0 installed_plugin_paths "${plugins_dir}" "${plugin_component}")
list(APPEND libs ${installed_plugin_paths})
endforeach()
resolve_qt4_paths(libs)
resolve_qt4_paths(dirs)
install(CODE
" INCLUDE( \"${DeployQt4_cmake_dir}/DeployQt4.cmake\" )
SET( BU_CHMOD_BUNDLE_ITEMS TRUE )
FIXUP_QT4_EXECUTABLE( \"\${CMAKE_INSTALL_PREFIX}/${executable}\" \"\" \"${libs}\" \"${dirs}\" \"${plugins_dir}\" \"${request_qt_conf}\" ) "
)
endfunction()
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