249 lines
11 KiB
CMake
249 lines
11 KiB
CMake
|
# - CONFIGURE_PACKAGE_CONFIG_FILE(), WRITE_BASIC_PACKAGE_VERSION_FILE()
|
||
|
|
#
|
||
|
|
# CONFIGURE_PACKAGE_CONFIG_FILE(<input> <output> INSTALL_DESTINATION <path>
|
||
|
|
# [PATH_VARS <var1> <var2> ... <varN>]
|
||
|
|
# [NO_SET_AND_CHECK_MACRO]
|
||
|
|
# [NO_CHECK_REQUIRED_COMPONENTS_MACRO])
|
||
|
|
#
|
||
|
|
# CONFIGURE_PACKAGE_CONFIG_FILE() should be used instead of the plain
|
||
|
|
# configure_file() command when creating the <Name>Config.cmake or <Name>-config.cmake
|
||
|
|
# file for installing a project or library. It helps making the resulting package
|
||
|
|
# relocatable by avoiding hardcoded paths in the installed Config.cmake file.
|
||
|
|
#
|
||
|
|
# In a FooConfig.cmake file there may be code like this to make the
|
||
|
|
# install destinations know to the using project:
|
||
|
|
# set(FOO_INCLUDE_DIR "@CMAKE_INSTALL_FULL_INCLUDEDIR@" )
|
||
|
|
# set(FOO_DATA_DIR "@CMAKE_INSTALL_PREFIX@/@RELATIVE_DATA_INSTALL_DIR@" )
|
||
|
|
# set(FOO_ICONS_DIR "@CMAKE_INSTALL_PREFIX@/share/icons" )
|
||
|
|
# ...logic to determine installedPrefix from the own location...
|
||
|
|
# set(FOO_CONFIG_DIR "${installedPrefix}/@CONFIG_INSTALL_DIR@" )
|
||
|
|
# All 4 options shown above are not sufficient, since the first 3 hardcode
|
||
|
|
# the absolute directory locations, and the 4th case works only if the logic
|
||
|
|
# to determine the installedPrefix is correct, and if CONFIG_INSTALL_DIR contains
|
||
|
|
# a relative path, which in general cannot be guaranteed.
|
||
|
|
# This has the effect that the resulting FooConfig.cmake file would work poorly
|
||
|
|
# under Windows and OSX, where users are used to choose the install location
|
||
|
|
# of a binary package at install time, independent from how CMAKE_INSTALL_PREFIX
|
||
|
|
# was set at build/cmake time.
|
||
|
|
#
|
||
|
|
# Using CONFIGURE_PACKAGE_CONFIG_FILE() helps. If used correctly, it makes the
|
||
|
|
# resulting FooConfig.cmake file relocatable.
|
||
|
|
# Usage:
|
||
|
|
# 1. write a FooConfig.cmake.in file as you are used to
|
||
|
|
# 2. insert a line containing only the string "@PACKAGE_INIT@"
|
||
|
|
# 3. instead of set(FOO_DIR "@SOME_INSTALL_DIR@"), use set(FOO_DIR "@PACKAGE_SOME_INSTALL_DIR@")
|
||
|
|
# (this must be after the @PACKAGE_INIT@ line)
|
||
|
|
# 4. instead of using the normal configure_file(), use CONFIGURE_PACKAGE_CONFIG_FILE()
|
||
|
|
#
|
||
|
|
# The <input> and <output> arguments are the input and output file, the same way
|
||
|
|
# as in configure_file().
|
||
|
|
#
|
||
|
|
# The <path> given to INSTALL_DESTINATION must be the destination where the FooConfig.cmake
|
||
|
|
# file will be installed to. This can either be a relative or absolute path, both work.
|
||
|
|
#
|
||
|
|
# The variables <var1> to <varN> given as PATH_VARS are the variables which contain
|
||
|
|
# install destinations. For each of them the macro will create a helper variable
|
||
|
|
# PACKAGE_<var...>. These helper variables must be used
|
||
|
|
# in the FooConfig.cmake.in file for setting the installed location. They are calculated
|
||
|
|
# by CONFIGURE_PACKAGE_CONFIG_FILE() so that they are always relative to the
|
||
|
|
# installed location of the package. This works both for relative and also for absolute locations.
|
||
|
|
# For absolute locations it works only if the absolute location is a subdirectory
|
||
|
|
# of CMAKE_INSTALL_PREFIX.
|
||
|
|
#
|
||
|
|
# By default configure_package_config_file() also generates two helper macros,
|
||
|
|
# set_and_check() and check_required_components() into the FooConfig.cmake file.
|
||
|
|
#
|
||
|
|
# set_and_check() should be used instead of the normal set()
|
||
|
|
# command for setting directories and file locations. Additionally to setting the
|
||
|
|
# variable it also checks that the referenced file or directory actually exists
|
||
|
|
# and fails with a FATAL_ERROR otherwise. This makes sure that the created
|
||
|
|
# FooConfig.cmake file does not contain wrong references.
|
||
|
|
# When using the NO_SET_AND_CHECK_MACRO, this macro is not generated into the
|
||
|
|
# FooConfig.cmake file.
|
||
|
|
#
|
||
|
|
# check_required_components(<package_name>) should be called at the end of the
|
||
|
|
# FooConfig.cmake file if the package supports components.
|
||
|
|
# This macro checks whether all requested, non-optional components have been found,
|
||
|
|
# and if this is not the case, sets the Foo_FOUND variable to FALSE, so that the package
|
||
|
|
# is considered to be not found.
|
||
|
|
# It does that by testing the Foo_<Component>_FOUND variables for all requested
|
||
|
|
# required components.
|
||
|
|
# When using the NO_CHECK_REQUIRED_COMPONENTS option, this macro is not generated
|
||
|
|
# into the FooConfig.cmake file.
|
||
|
|
#
|
||
|
|
# For an example see below the documentation for WRITE_BASIC_PACKAGE_VERSION_FILE().
|
||
|
|
#
|
||
|
|
#
|
||
|
|
# WRITE_BASIC_PACKAGE_VERSION_FILE( filename VERSION major.minor.patch COMPATIBILITY (AnyNewerVersion|SameMajorVersion|ExactVersion) )
|
||
|
|
#
|
||
|
|
# Writes a file for use as <package>ConfigVersion.cmake file to <filename>.
|
||
|
|
# See the documentation of find_package() for details on this.
|
||
|
|
# filename is the output filename, it should be in the build tree.
|
||
|
|
# major.minor.patch is the version number of the project to be installed
|
||
|
|
# The COMPATIBILITY mode AnyNewerVersion means that the installed package version
|
||
|
|
# will be considered compatible if it is newer or exactly the same as the requested version.
|
||
|
|
# This mode should be used for packages which are fully backward compatible,
|
||
|
|
# also across major versions.
|
||
|
|
# If SameMajorVersion is used instead, then the behaviour differs from AnyNewerVersion
|
||
|
|
# in that the major version number must be the same as requested, e.g. version 2.0 will
|
||
|
|
# not be considered compatible if 1.0 is requested.
|
||
|
|
# This mode should be used for packages which guarantee backward compatibility within the
|
||
|
|
# same major version.
|
||
|
|
# If ExactVersion is used, then the package is only considered compatible if the requested
|
||
|
|
# version matches exactly its own version number (not considering the tweak version).
|
||
|
|
# For example, version 1.2.3 of a package is only considered compatible to requested version 1.2.3.
|
||
|
|
# This mode is for packages without compatibility guarantees.
|
||
|
|
# If your project has more elaborated version matching rules, you will need to write your
|
||
|
|
# own custom ConfigVersion.cmake file instead of using this macro.
|
||
|
|
#
|
||
|
|
# Internally, this macro executes configure_file() to create the resulting
|
||
|
|
# version file. Depending on the COMPATIBLITY, either the file
|
||
|
|
# BasicConfigVersion-SameMajorVersion.cmake.in or BasicConfigVersion-AnyNewerVersion.cmake.in
|
||
|
|
# is used. Please note that these two files are internal to CMake and you should
|
||
|
|
# not call configure_file() on them yourself, but they can be used as starting
|
||
|
|
# point to create more sophisticted custom ConfigVersion.cmake files.
|
||
|
|
#
|
||
|
|
#
|
||
|
|
# Example using both configure_package_config_file() and write_basic_package_version_file():
|
||
|
|
# CMakeLists.txt:
|
||
|
|
# set(INCLUDE_INSTALL_DIR include/ ... CACHE )
|
||
|
|
# set(LIB_INSTALL_DIR lib/ ... CACHE )
|
||
|
|
# set(SYSCONFIG_INSTALL_DIR etc/foo/ ... CACHE )
|
||
|
|
# ...
|
||
|
|
# include(CMakePackageConfigHelpers)
|
||
|
|
# configure_package_config_file(FooConfig.cmake.in ${CMAKE_CURRENT_BINARY_DIR}/FooConfig.cmake
|
||
|
|
# INSTALL_DESTINATION ${LIB_INSTALL_DIR}/Foo/cmake
|
||
|
|
# PATH_VARS INCLUDE_INSTALL_DIR SYSCONFIG_INSTALL_DIR)
|
||
|
|
# write_basic_package_version_file(${CMAKE_CURRENT_BINARY_DIR}/FooConfigVersion.cmake
|
||
|
|
# VERSION 1.2.3
|
||
|
|
# COMPATIBILITY SameMajorVersion )
|
||
|
|
# install(FILES ${CMAKE_CURRENT_BINARY_DIR}/FooConfig.cmake ${CMAKE_CURRENT_BINARY_DIR}/FooConfigVersion.cmake
|
||
|
|
# DESTINATION ${LIB_INSTALL_DIR}/Foo/cmake )
|
||
|
|
#
|
||
|
|
# With a FooConfig.cmake.in:
|
||
|
|
# set(FOO_VERSION x.y.z)
|
||
|
|
# ...
|
||
|
|
# @PACKAGE_INIT@
|
||
|
|
# ...
|
||
|
|
# set_and_check(FOO_INCLUDE_DIR "@PACKAGE_INCLUDE_INSTALL_DIR@")
|
||
|
|
# set_and_check(FOO_SYSCONFIG_DIR "@PACKAGE_SYSCONFIG_INSTALL_DIR@")
|
||
|
|
#
|
||
|
|
# check_required_components(Foo)
|
||
|
|
|
||
|
|
|
||
|
|
#=============================================================================
|
||
|
|
# Copyright 2012 Alexander Neundorf <neundorf@kde.org>
|
||
|
|
#
|
||
|
|
# Distributed under the OSI-approved BSD License (the "License");
|
||
|
|
# see accompanying file Copyright.txt for details.
|
||
|
|
#
|
||
|
|
# This software is distributed WITHOUT ANY WARRANTY; without even the
|
||
|
|
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
||
|
|
# See the License for more information.
|
||
|
|
#=============================================================================
|
||
|
|
# (To distribute this file outside of CMake, substitute the full
|
||
|
|
# License text for the above reference.)
|
||
|
|
|
||
|
|
include(CMakeParseArguments)
|
||
|
|
|
||
|
|
include(WriteBasicConfigVersionFile)
|
||
|
|
|
||
|
|
macro(WRITE_BASIC_PACKAGE_VERSION_FILE)
|
||
|
|
write_basic_config_version_file(${ARGN})
|
||
|
|
endmacro()
|
||
|
|
|
||
|
|
|
||
|
|
function(CONFIGURE_PACKAGE_CONFIG_FILE _inputFile _outputFile)
|
||
|
|
set(options NO_SET_AND_CHECK_MACRO NO_CHECK_REQUIRED_COMPONENTS_MACRO)
|
||
|
|
set(oneValueArgs INSTALL_DESTINATION )
|
||
|
|
set(multiValueArgs PATH_VARS )
|
||
|
|
|
||
|
|
cmake_parse_arguments(CCF "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
|
||
|
|
|
||
|
|
if(CCF_UNPARSED_ARGUMENTS)
|
||
|
|
message(FATAL_ERROR "Unknown keywords given to CONFIGURE_PACKAGE_CONFIG_FILE(): \"${CCF_UNPARSED_ARGUMENTS}\"")
|
||
|
|
endif()
|
||
|
|
|
||
|
|
if(NOT CCF_INSTALL_DESTINATION)
|
||
|
|
message(FATAL_ERROR "No INSTALL_DESTINATION given to CONFIGURE_PACKAGE_CONFIG_FILE()")
|
||
|
|
endif()
|
||
|
|
|
||
|
|
if(IS_ABSOLUTE "${CCF_INSTALL_DESTINATION}")
|
||
|
|
set(absInstallDir "${CCF_INSTALL_DESTINATION}")
|
||
|
|
else()
|
||
|
|
set(absInstallDir "${CMAKE_INSTALL_PREFIX}/${CCF_INSTALL_DESTINATION}")
|
||
|
|
endif()
|
||
|
|
|
||
|
|
file(RELATIVE_PATH PACKAGE_RELATIVE_PATH "${absInstallDir}" "${CMAKE_INSTALL_PREFIX}" )
|
||
|
|
|
||
|
|
foreach(var ${CCF_PATH_VARS})
|
||
|
|
if(NOT DEFINED ${var})
|
||
|
|
message(FATAL_ERROR "Variable ${var} does not exist")
|
||
|
|
else()
|
||
|
|
if(IS_ABSOLUTE "${${var}}")
|
||
|
|
string(REPLACE "${CMAKE_INSTALL_PREFIX}" "\${PACKAGE_PREFIX_DIR}"
|
||
|
|
PACKAGE_${var} "${${var}}")
|
||
|
|
else()
|
||
|
|
set(PACKAGE_${var} "\${PACKAGE_PREFIX_DIR}/${${var}}")
|
||
|
|
endif()
|
||
|
|
endif()
|
||
|
|
endforeach()
|
||
|
|
|
||
|
|
get_filename_component(inputFileName "${_inputFile}" NAME)
|
||
|
|
|
||
|
|
set(PACKAGE_INIT "
|
||
|
|
####### Expanded from @PACKAGE_INIT@ by configure_package_config_file() #######
|
||
|
|
####### Any changes to this file will be overwritten by the next CMake run ####
|
||
|
|
####### The input file was ${inputFileName} ########
|
||
|
|
|
||
|
|
get_filename_component(PACKAGE_PREFIX_DIR \"\${CMAKE_CURRENT_LIST_DIR}/${PACKAGE_RELATIVE_PATH}\" ABSOLUTE)
|
||
|
|
")
|
||
|
|
|
||
|
|
if("${absInstallDir}" MATCHES "^(/usr)?/lib(64)?/.+")
|
||
|
|
# Handle "/usr move" symlinks created by some Linux distros.
|
||
|
|
set(PACKAGE_INIT "${PACKAGE_INIT}
|
||
|
|
# Use original install prefix when loaded through a \"/usr move\"
|
||
|
|
# cross-prefix symbolic link such as /lib -> /usr/lib.
|
||
|
|
get_filename_component(_realCurr \"\${CMAKE_CURRENT_LIST_DIR}\" REALPATH)
|
||
|
|
get_filename_component(_realOrig \"${absInstallDir}\" REALPATH)
|
||
|
|
if(_realCurr STREQUAL _realOrig)
|
||
|
|
set(PACKAGE_PREFIX_DIR \"${CMAKE_INSTALL_PREFIX}\")
|
||
|
|
endif()
|
||
|
|
unset(_realOrig)
|
||
|
|
unset(_realCurr)
|
||
|
|
")
|
||
|
|
endif()
|
||
|
|
|
||
|
|
if(NOT CCF_NO_SET_AND_CHECK_MACRO)
|
||
|
|
set(PACKAGE_INIT "${PACKAGE_INIT}
|
||
|
|
macro(set_and_check _var _file)
|
||
|
|
set(\${_var} \"\${_file}\")
|
||
|
|
if(NOT EXISTS \"\${_file}\")
|
||
|
|
message(FATAL_ERROR \"File or directory \${_file} referenced by variable \${_var} does not exist !\")
|
||
|
|
endif()
|
||
|
|
endmacro()
|
||
|
|
")
|
||
|
|
endif()
|
||
|
|
|
||
|
|
|
||
|
|
if(NOT CCF_NO_CHECK_REQUIRED_COMPONENTS_MACRO)
|
||
|
|
set(PACKAGE_INIT "${PACKAGE_INIT}
|
||
|
|
macro(check_required_components _NAME)
|
||
|
|
foreach(comp \${\${_NAME}_FIND_COMPONENTS})
|
||
|
|
if(NOT \${_NAME}_\${comp}_FOUND)
|
||
|
|
if(\${_NAME}_FIND_REQUIRED_\${comp})
|
||
|
|
set(\${_NAME}_FOUND FALSE)
|
||
|
|
endif()
|
||
|
|
endif()
|
||
|
|
endforeach()
|
||
|
|
endmacro()
|
||
|
|
")
|
||
|
|
endif()
|
||
|
|
|
||
|
|
set(PACKAGE_INIT "${PACKAGE_INIT}
|
||
|
|
####################################################################################")
|
||
|
|
|
||
|
|
configure_file("${_inputFile}" "${_outputFile}" @ONLY)
|
||
|
|
|
||
|
|
endfunction()
|