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cmake: Generate install_manifest.cmake if WITH_PACKAGES enabled.
The information from install_mainfest.cmake is used for generating the packages.
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‎packaging/CMakeLists.txt

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# along with this program; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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# ======================================================================
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# Install manifest
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# ======================================================================
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# Generate and install install_manifest.cmake file which contains
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# information about install components and files in each component.
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# See the install_mainfest.cmake script in this directory.
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add_custom_target(generate_manifest
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ALL
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COMMAND ${CMAKE_COMMAND}
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-D INSTALL_DIR=${CMAKE_INSTALL_PREFIX}
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-D BUILD_DIR=${PROJECT_BINARY_DIR}
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-P "${CMAKE_CURRENT_SOURCE_DIR}/install_manifest.cmake"
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WORKING_DIRECTORY ${PROJECT_BINARY_DIR}
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COMMENT "Generating install manifest"
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)
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install(
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FILES "${PROJECT_BINARY_DIR}/install_manifest.cmake"
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DESTINATION .
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COMPONENT Auxiliary
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)
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# ======================================================================
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# Licenses for binary packages

‎packaging/install_manifest.cmake

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# Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License, version 2.0, as
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# published by the Free Software Foundation.
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#
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# This program is also distributed with certain software (including
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# but not limited to OpenSSL) that is licensed under separate terms,
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# as designated in a particular file or component or in included license
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# documentation. The authors of MySQL hereby grant you an
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# additional permission to link the program and your derivative works
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# with the separately licensed software that they have included with
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# MySQL.
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#
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# Without limiting anything contained in the foregoing, this file,
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# which is part of MySQL Connector/C++, is also subject to the
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# Universal FOSS Exception, version 1.0, a copy of which can be found at
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# http://oss.oracle.com/licenses/universal-foss-exception.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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# See the GNU General Public License, version 2.0, for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#
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# This script collects information about install components and files
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# inside each components and writes it to install_mainfest.cmake file
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# in form of set() commands that set the following variables:
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#
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# - COMPONENTS -- list of install components
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# - FILES_${CCC} -- list of files in component CCC
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#
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# The information is collected from CPackConfig.cmake and cmake_install.cmake
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# files that are generated in project's build location. This location must
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# be give via BUILD_DIR variable.
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#
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# If INSTALL_DIR is defined and contains install_manifest.cmake, the
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# information collected here is merged with the information from
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# ${INSTALL_DIR}/install_manifest.cmake. This way information from several
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# builds can be merged together (easiest if all these builds install to
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# the same install location).
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#
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# The output file
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set(MANIFEST_FILE ${BUILD_DIR}/install_manifest.cmake)
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# Check if requiret input files exist
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if(NOT EXISTS "${BUILD_DIR}/CPackConfig.cmake")
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message(FATAL_ERROR "Could not find CPackConfig.cmake at: ${BUILD_DIR}")
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endif()
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if(NOT EXISTS "${BUILD_DIR}/cmake_install.cmake")
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message(FATAL_ERROR "Could not find cmake_install.cmake at: ${BUILD_DIR}")
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endif()
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# Read existing information to be extended (if present) and CPackConfig.cmake
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# to get list of install components. Update COMPONENTS basead on this.
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include("${INSTALL_DIR}/install_manifest.cmake" OPTIONAL)
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include("${BUILD_DIR}/CPackConfig.cmake")
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list(APPEND COMPONENTS ${CPACK_COMPONENTS_ALL})
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list(REMOVE_DUPLICATES COMPONENTS)
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#
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# Now we will include cmake_install.cmake which uses file(INSTALL ...) commands
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# to install all files. We redefine file() command to extract file information
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# instead of copying it to the destination.
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#
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function(file CMD)
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# we only look at file(INSTALL ...) variant
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if(NOT CMD STREQUAL "INSTALL")
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return()
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endif()
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#
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# example file(INSTALL ...) invocation in cmake_install.cmake:
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#
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# file(INSTALL DESTINATION "..." TYPE STATIC_LIBRARY OPTIONAL FILES ...)
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#
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# we read destination location and remove all arguments up to the list of
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# files
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#
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list(GET ARGN 1 DEST)
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list(REMOVE_AT ARGN 0 1 2 3 4)
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# Because of things like OPTIONAL, which can be present or not, the first
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# item in ARGN can be the FILES keyword - remove it if this is the case.
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list(GET ARGN 0 FIRST)
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if(FIRST STREQUAL "FILES")
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list(REMOVE_AT ARGN 0)
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endif()
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# Now process the files and append them to FILES_CCC list
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foreach(F ${ARGN})
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get_filename_component(FN ${F} NAME)
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#message("- adding (${CMAKE_INSTALL_COMPONENT}): ${DEST}/${FN}")
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list(APPEND FILES_${CMAKE_INSTALL_COMPONENT} "${DEST}/${FN}")
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endforeach()
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list(REMOVE_DUPLICATES FILES_${CMAKE_INSTALL_COMPONENT})
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#message("-- files: ${FILES_${CMAKE_INSTALL_COMPONENT}}")
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set(FILES_${CMAKE_INSTALL_COMPONENT} ${FILES_${CMAKE_INSTALL_COMPONENT}} PARENT_SCOPE)
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endfunction(file)
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#
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# Include cmake_install.cmake one time for each component, each time
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# setting CMAKE_INSTALL_COMPONENT to the component being processed. This
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# way only files from that component are processed inside cmake_install
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# script.
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#
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set(CMAKE_INSTALL_CONFIG_NAME "Release")
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set(CMAKE_INSTALL_PREFIX ".")
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foreach(COMP ${CPACK_COMPONENTS_ALL})
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set(CMAKE_INSTALL_COMPONENT ${COMP})
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#message("\nComponent: ${CMAKE_INSTALL_COMPONENT}")
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include(${BUILD_DIR}/cmake_install.cmake)
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#message("-- files: ${FILES_${CMAKE_INSTALL_COMPONENT}}")
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endforeach()
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# Write gathered information to the output file.
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# Note: Original file() command was redefined above!
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_file(WRITE ${MANIFEST_FILE}
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"# Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.\n"
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"# This is generated file.\n\n"
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"set(COMPONENTS ${COMPONENTS})\n\n"
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)
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foreach(COMP ${COMPONENTS})
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_file(APPEND ${MANIFEST_FILE}
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"set(FILES_${COMP} ${FILES_${COMP}})\n"
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)
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endforeach()
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message("Wrote: ${MANIFEST_FILE}")

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