Extract find_package2 into own File

To make it easier to share find_package2 across projects
let's move it into its own file.
This commit is contained in:
Christian Tacke 2021-04-09 13:48:20 +02:00 committed by Dennis Klein
parent 1c43450582
commit 13ebedca3d
3 changed files with 103 additions and 95 deletions

View File

@ -12,6 +12,7 @@ cmake_policy(VERSION 3.9...3.19)
# Project ###################################################################### # Project ######################################################################
set(CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake) set(CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake)
include(FairLoggerLib) include(FairLoggerLib)
include(FairFindPackage2)
get_git_version() get_git_version()

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@ -0,0 +1,102 @@
################################################################################
# Copyright (C) 2018-2021 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH #
# #
# This software is distributed under the terms of the #
# GNU Lesser General Public Licence (LGPL) version 3, #
# copied verbatim in the file "LICENSE" #
################################################################################
#
# find_package2(PRIVATE|PUBLIC|INTERFACE <pkgname>
# [VERSION <version>]
# [COMPONENTS <list of components>]
# [ADD_REQUIREMENTS_OF <list of dep_pgkname>]
# [any other option the native find_package supports]...)
#
# Wrapper around CMake's native find_package command to add some features and bookkeeping.
#
# The qualifier (PRIVATE|PUBLIC|INTERFACE) to the package to populate
# the variables PROJECT_[INTERFACE]_<pkgname>_([VERSION]|[COMPONENTS]|PACKAGE_DEPENDENCIES)
# accordingly. This bookkeeping information is used to print our dependency found summary
# table and to generate a part of our CMake package.
#
# When a dependending package is listed with ADD_REQUIREMENTS_OF the variables
# <dep_pkgname>_<pkgname>_VERSION|COMPONENTS are looked up to and added to the native
# VERSION (selected highest version) and COMPONENTS (deduplicated) args.
#
# COMPONENTS and VERSION args are then just passed to the native find_package.
#
macro(find_package2 qualifier pkgname)
cmake_parse_arguments(ARGS "" "VERSION" "COMPONENTS;ADD_REQUIREMENTS_OF" ${ARGN})
string(TOUPPER ${pkgname} pkgname_upper)
set(__old_cpp__ ${CMAKE_PREFIX_PATH})
set(CMAKE_PREFIX_PATH ${${pkgname_upper}_ROOT} $ENV{${pkgname_upper}_ROOT} ${CMAKE_PREFIX_PATH})
# build lists of required versions and components
unset(__required_versions__)
unset(__components__)
if(ARGS_VERSION)
list(APPEND __required_versions__ ${ARGS_VERSION})
endif()
if(ARGS_COMPONENTS)
list(APPEND __components__ ${ARGS_COMPONENTS})
endif()
if(ARGS_ADD_REQUIREMENTS_OF)
foreach(dep_pkgname IN LISTS ARGS_ADD_REQUIREMENTS_OF)
if(${dep_pkgname}_${pkgname}_VERSION)
list(APPEND __required_versions__ ${${dep_pkgname}_${pkgname}_VERSION})
endif()
if(${dep_pkgname}_${pkgname}_COMPONENTS)
list(APPEND __components__ ${${dep_pkgname}_${pkgname}_COMPONENTS})
endif()
endforeach()
endif()
# select highest required version
unset(__version__)
if(__required_versions__)
list(GET __required_versions__ 0 __version__)
foreach(v IN LISTS __required_versions__)
if(${v} VERSION_GREATER ${__version__})
set(__version__ ${v})
endif()
endforeach()
endif()
# deduplicate required component list
if(__components__)
list(REMOVE_DUPLICATES ARGS_COMPONENTS)
endif()
# call native find_package
if(__components__)
find_package(${pkgname} ${__version__} QUIET COMPONENTS ${__components__} ${ARGS_UNPARSED_ARGUMENTS})
else()
find_package(${pkgname} ${__version__} QUIET ${ARGS_UNPARSED_ARGUMENTS})
endif()
if(${pkgname}_FOUND)
if(${qualifier} STREQUAL PRIVATE)
set(PROJECT_${pkgname}_VERSION ${__version__})
set(PROJECT_${pkgname}_COMPONENTS ${ARGS_COMPONENTS})
set(PROJECT_PACKAGE_DEPENDENCIES ${PROJECT_PACKAGE_DEPENDENCIES} ${pkgname})
elseif(${qualifier} STREQUAL PUBLIC)
set(PROJECT_${pkgname}_VERSION ${__version__})
set(PROJECT_${pkgname}_COMPONENTS ${ARGS_COMPONENTS})
set(PROJECT_PACKAGE_DEPENDENCIES ${PROJECT_PACKAGE_DEPENDENCIES} ${pkgname})
set(PROJECT_INTERFACE_${pkgname}_VERSION ${__version__})
set(PROJECT_INTERFACE_${pkgname}_COMPONENTS ${ARGS_COMPONENTS})
set(PROJECT_INTERFACE_PACKAGE_DEPENDENCIES ${PROJECT_INTERFACE_PACKAGE_DEPENDENCIES} ${pkgname})
elseif(${qualifier} STREQUAL INTERFACE)
set(PROJECT_INTERFACE_${pkgname}_VERSION ${__version__})
set(PROJECT_INTERFACE_${pkgname}_COMPONENTS ${ARGS_COMPONENTS})
set(PROJECT_INTERFACE_PACKAGE_DEPENDENCIES ${PROJECT_INTERFACE_PACKAGE_DEPENDENCIES} ${pkgname})
endif()
endif()
unset(__version__)
unset(__components__)
unset(__required_versions__)
set(CMAKE_PREFIX_PATH ${__old_cpp__})
unset(__old_cpp__)
endmacro()

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@ -248,98 +248,3 @@ macro(install_cmake_package)
DESTINATION ${PACKAGE_INSTALL_DESTINATION} DESTINATION ${PACKAGE_INSTALL_DESTINATION}
) )
endmacro() endmacro()
#
# find_package2(PRIVATE|PUBLIC|INTERFACE <pkgname>
# [VERSION <version>]
# [COMPONENTS <list of components>]
# [ADD_REQUIREMENTS_OF <list of dep_pgkname>]
# [any other option the native find_package supports]...)
#
# Wrapper around CMake's native find_package command to add some features and bookkeeping.
#
# The qualifier (PRIVATE|PUBLIC|INTERFACE) to the package to populate
# the variables PROJECT_[INTERFACE]_<pkgname>_([VERSION]|[COMPONENTS]|PACKAGE_DEPENDENCIES)
# accordingly. This bookkeeping information is used to print our dependency found summary
# table and to generate a part of our CMake package.
#
# When a dependending package is listed with ADD_REQUIREMENTS_OF the variables
# <dep_pkgname>_<pkgname>_VERSION|COMPONENTS are looked up to and added to the native
# VERSION (selected highest version) and COMPONENTS (deduplicated) args.
#
# COMPONENTS and VERSION args are then just passed to the native find_package.
#
macro(find_package2 qualifier pkgname)
cmake_parse_arguments(ARGS "" "VERSION" "COMPONENTS;ADD_REQUIREMENTS_OF" ${ARGN})
string(TOUPPER ${pkgname} pkgname_upper)
set(__old_cpp__ ${CMAKE_PREFIX_PATH})
set(CMAKE_PREFIX_PATH ${${pkgname_upper}_ROOT} $ENV{${pkgname_upper}_ROOT} ${CMAKE_PREFIX_PATH})
# build lists of required versions and components
unset(__required_versions__)
unset(__components__)
if(ARGS_VERSION)
list(APPEND __required_versions__ ${ARGS_VERSION})
endif()
if(ARGS_COMPONENTS)
list(APPEND __components__ ${ARGS_COMPONENTS})
endif()
if(ARGS_ADD_REQUIREMENTS_OF)
foreach(dep_pkgname IN LISTS ARGS_ADD_REQUIREMENTS_OF)
if(${dep_pkgname}_${pkgname}_VERSION)
list(APPEND __required_versions__ ${${dep_pkgname}_${pkgname}_VERSION})
endif()
if(${dep_pkgname}_${pkgname}_COMPONENTS)
list(APPEND __components__ ${${dep_pkgname}_${pkgname}_COMPONENTS})
endif()
endforeach()
endif()
# select highest required version
unset(__version__)
if(__required_versions__)
list(GET __required_versions__ 0 __version__)
foreach(v IN LISTS __required_versions__)
if(${v} VERSION_GREATER ${__version__})
set(__version__ ${v})
endif()
endforeach()
endif()
# deduplicate required component list
if(__components__)
list(REMOVE_DUPLICATES ARGS_COMPONENTS)
endif()
# call native find_package
if(__components__)
find_package(${pkgname} ${__version__} QUIET COMPONENTS ${__components__} ${ARGS_UNPARSED_ARGUMENTS})
else()
find_package(${pkgname} ${__version__} QUIET ${ARGS_UNPARSED_ARGUMENTS})
endif()
if(${pkgname}_FOUND)
if(${qualifier} STREQUAL PRIVATE)
set(PROJECT_${pkgname}_VERSION ${__version__})
set(PROJECT_${pkgname}_COMPONENTS ${ARGS_COMPONENTS})
set(PROJECT_PACKAGE_DEPENDENCIES ${PROJECT_PACKAGE_DEPENDENCIES} ${pkgname})
elseif(${qualifier} STREQUAL PUBLIC)
set(PROJECT_${pkgname}_VERSION ${__version__})
set(PROJECT_${pkgname}_COMPONENTS ${ARGS_COMPONENTS})
set(PROJECT_PACKAGE_DEPENDENCIES ${PROJECT_PACKAGE_DEPENDENCIES} ${pkgname})
set(PROJECT_INTERFACE_${pkgname}_VERSION ${__version__})
set(PROJECT_INTERFACE_${pkgname}_COMPONENTS ${ARGS_COMPONENTS})
set(PROJECT_INTERFACE_PACKAGE_DEPENDENCIES ${PROJECT_INTERFACE_PACKAGE_DEPENDENCIES} ${pkgname})
elseif(${qualifier} STREQUAL INTERFACE)
set(PROJECT_INTERFACE_${pkgname}_VERSION ${__version__})
set(PROJECT_INTERFACE_${pkgname}_COMPONENTS ${ARGS_COMPONENTS})
set(PROJECT_INTERFACE_PACKAGE_DEPENDENCIES ${PROJECT_INTERFACE_PACKAGE_DEPENDENCIES} ${pkgname})
endif()
endif()
unset(__version__)
unset(__components__)
unset(__required_versions__)
set(CMAKE_PREFIX_PATH ${__old_cpp__})
unset(__old_cpp__)
endmacro()