# check whether the required project meta-data has been set before including this module
if (NOT META_PROJECT_NAME)
    message(FATAL_ERROR "No project name (META_PROJECT_NAME) specified.")
endif ()
if (NOT META_APP_NAME)
    message(FATAL_ERROR "No project name (META_APP_NAME) specified.")
endif ()
if (NOT META_APP_AUTHOR)
    message(FATAL_ERROR "No project name (META_APP_AUTHOR) specified.")
endif ()
if (NOT META_APP_DESCRIPTION)
    message(FATAL_ERROR "No project name (META_APP_DESCRIPTION) specified.")
endif ()

# set project name (displayed in Qt Creator)
message(STATUS "Configuring project ${META_PROJECT_NAME}")
project(${META_PROJECT_NAME})

# set META_PROJECT_VARNAME and META_PROJECT_VARNAME_UPPER if not specified explicitely
if (NOT META_PROJECT_VARNAME)
    set(META_PROJECT_VARNAME "${META_PROJECT_NAME}")
endif ()
if (NOT META_PROJECT_VARNAME_UPPER)
    string(TOUPPER ${META_PROJECT_VARNAME} META_PROJECT_VARNAME_UPPER)
endif ()
if (NOT META_PROJECT_VARNAME_LOWER)
    string(REGEX
           REPLACE "_+"
                   ""
                   META_PROJECT_VARNAME_LOWER
                   "${META_PROJECT_VARNAME}")
    string(TOLOWER "${META_PROJECT_VARNAME_LOWER}" META_PROJECT_VARNAME_LOWER)
endif ()

# allow setting a configuration name to allow installing multiple differently configured versions within the same prefix
# (intended to be used for installing Qt 5 and Qt 6 version or shared and static version within the same prefix)
set(${META_PROJECT_VARNAME_UPPER}_CONFIGURATION_NAME "" CACHE STRING "sets the configuration name for ${META_PROJECT_NAME}")
set(CONFIGURATION_NAME "" CACHE STRING "sets the configuration name for all projects within the current build")
if (${META_PROJECT_VARNAME_UPPER}_CONFIGURATION_NAME STREQUAL "none")
    set(META_CONFIG_NAME "")
elseif (${META_PROJECT_VARNAME_UPPER}_CONFIGURATION_NAME)
    set(META_CONFIG_NAME "${${META_PROJECT_VARNAME_UPPER}_CONFIGURATION_NAME}")
else ()
    set(META_CONFIG_NAME "${CONFIGURATION_NAME}")
endif ()
if (META_CONFIG_NAME)
    set(META_CONFIG_PREFIX "${META_CONFIG_NAME}-")
    set(META_CONFIG_SUFFIX "-${META_CONFIG_NAME}")
endif ()

# allow setting a library/application target suffix - A different configuration name might not require a different target
# name since it might differ anyways (e.g. library extensions for static and shared configuration). Hence there's not simply
# the configuration name used to distinguish targets as well.
set(${META_PROJECT_VARNAME_UPPER}_CONFIGURATION_TARGET_SUFFIX
    ""
    CACHE STRING "sets a target suffix for ${META_PROJECT_NAME}")
set(CONFIGURATION_TARGET_SUFFIX "" CACHE STRING "sets the target suffix for all projects within the current build")
if (${META_PROJECT_VARNAME_UPPER}_CONFIGURATION_TARGET_SUFFIX STREQUAL "none")
    set(TARGET_SUFFIX "")
elseif (${META_PROJECT_VARNAME_UPPER}_CONFIGURATION_TARGET_SUFFIX)
    set(TARGET_SUFFIX "-${${META_PROJECT_VARNAME_UPPER}_CONFIGURATION_TARGET_SUFFIX}")
elseif (CONFIGURATION_TARGET_SUFFIX)
    set(TARGET_SUFFIX "-${CONFIGURATION_TARGET_SUFFIX}")
endif ()

# define a few variables
set(META_TARGET_NAME "${TARGET_PREFIX}${META_PROJECT_NAME}${TARGET_SUFFIX}")
set(META_DATA_DIR "share/${META_PROJECT_NAME}${META_CONFIG_SUFFIX}")
string(TOUPPER "${CMAKE_BUILD_TYPE}" META_CURRENT_CONFIGURATION)

# set META_GENERIC_NAME to META_APP_NAME if not specified explicitely
if (NOT META_GENERIC_NAME)
    set(META_GENERIC_NAME "${META_APP_NAME}")
endif ()

# set default CXX_STANDARD for all library, application and test targets
if (NOT META_CXX_STANDARD)
    set(META_CXX_STANDARD 17)
endif ()

# set version to 0.0.0 if not specified explicitely
if (NOT META_VERSION_MAJOR)
    set(META_VERSION_MAJOR 0)
endif ()
if (NOT META_VERSION_MINOR)
    set(META_VERSION_MINOR 0)
endif ()
if (NOT META_VERSION_PATCH)
    set(META_VERSION_PATCH 0)
endif ()

# set META_ID to target name if not specified
if (NOT META_ID)
    set(META_ID "${META_TARGET_NAME}")
endif ()

# set bugtracker URL
if (NOT META_APP_BUGTRACKER_URL)
    if (META_APP_URL MATCHES "https://(github.com|gitlab.com|.*/(gogs|gitea)|(gogs|gitea).*)/.*")
        set(META_APP_BUGTRACKER_URL "${META_APP_URL}/issues")
    else ()
        set(META_APP_BUGTRACKER_URL "${META_APP_URL}")
    endif ()
endif ()

# determine license automatically from LICENSE file
if (NOT META_PROJECT_LICENSE)
    if (EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/LICENSE")
        file(READ "${CMAKE_CURRENT_SOURCE_DIR}/LICENSE" META_PROJECT_LICENSE_FILE)
    elseif (EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/../LICENSE")
        file(READ "${CMAKE_CURRENT_SOURCE_DIR}/../LICENSE" META_PROJECT_LICENSE_FILE)
    endif ()
    if (META_PROJECT_LICENSE_FILE MATCHES "GNU GENERAL PUBLIC LICENSE.*Version ([1-9\\.]*)")
        set(META_PROJECT_LICENSE "GPL-${CMAKE_MATCH_1}")
    elseif (META_PROJECT_LICENSE_FILE MATCHES "GNU LESSER GENERAL PUBLIC LICENSE.*Version ([1-9\\.]*)")
        set(META_PROJECT_LICENSE "LGPL-${CMAKE_MATCH_1}")
    elseif (META_PROJECT_LICENSE_FILE MATCHES "MIT License")
        set(META_PROJECT_LICENSE "MIT")
    elseif (META_PROJECT_LICENSE_FILE MATCHES "Mozilla Public License Version ([1-9\\.]*)")
        set(META_PROJECT_LICENSE "MPL-${CMAKE_MATCH_1}")
    else ()
        message(
            WARNING
                "Unable to detect license of ${META_PROJECT_NAME}. Set META_PROJECT_LICENSE manually to silence this warning."
            )
    endif ()
endif ()

# provide variables for other projects built as part of the same subdirs project to access files from this project
get_directory_property(HAS_PARENT PARENT_DIRECTORY)
if (HAS_PARENT)
    set(${META_PROJECT_VARNAME_UPPER}_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}" PARENT_SCOPE)
    set(${META_PROJECT_VARNAME_UPPER}_BINARY_DIR "${CMAKE_CURRENT_BINARY_DIR}" PARENT_SCOPE)
    set(${META_PROJECT_NAME}_DIR "${CMAKE_CURRENT_BINARY_DIR}" PARENT_SCOPE)
    set(RUNTIME_LIBRARY_PATH "${CMAKE_CURRENT_BINARY_DIR}" ${RUNTIME_LIBRARY_PATH} PARENT_SCOPE)
endif ()

# determine version
set(META_APP_VERSION ${META_VERSION_MAJOR}.${META_VERSION_MINOR}.${META_VERSION_PATCH})
option(
    APPEND_GIT_REVISION
    "whether the build script should attempt to append the git revision and latest commit to the version displayed via --help"
    ON)
if (APPEND_GIT_REVISION)
    find_program(GIT_BIN git)
    execute_process(COMMAND ${GIT_BIN} rev-list --count HEAD
                    WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
                    OUTPUT_VARIABLE META_GIT_REV_COUNT)
    execute_process(COMMAND ${GIT_BIN} rev-parse --short HEAD
                    WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
                    OUTPUT_VARIABLE META_GIT_LAST_COMMIT_ID)
    string(REPLACE "\n"
                   ""
                   META_GIT_REV_COUNT
                   "${META_GIT_REV_COUNT}")
    string(REPLACE "\n"
                   ""
                   META_GIT_LAST_COMMIT_ID
                   "${META_GIT_LAST_COMMIT_ID}")
    if (META_GIT_REV_COUNT AND META_GIT_LAST_COMMIT_ID)
        set(META_APP_VERSION ${META_APP_VERSION}-${META_GIT_REV_COUNT}.${META_GIT_LAST_COMMIT_ID})
    endif ()
endif ()

# set TARGET_EXECUTABLE which is used to refer to the target executable at its installation location
set(TARGET_EXECUTABLE "${CMAKE_INSTALL_PREFIX}/bin/${META_TARGET_NAME}")

# create header for feature detection
if (META_FEATURES_FOR_COMPILER_DETECTION_HEADER)
    include(WriteCompilerDetectionHeader)
    write_compiler_detection_header(FILE
                                    "${CMAKE_CURRENT_BINARY_DIR}/resources/features.h"
                                    PREFIX
                                    "${META_PROJECT_VARNAME_UPPER}"
                                    COMPILERS
                                    GNU
                                    Clang
                                    AppleClang
                                    FEATURES
                                    ${META_FEATURES_FOR_COMPILER_DETECTION_HEADER})
endif ()

# disable new ABI (can't catch ios_base::failure with new ABI)
option(FORCE_OLD_ABI "specifies whether usage of old ABI should be forced" OFF)
if (FORCE_OLD_ABI)
    list(APPEND META_PRIVATE_COMPILE_DEFINITIONS _GLIBCXX_USE_CXX11_ABI=0)
    message(STATUS "Forcing usage of old CXX11 ABI.")
else ()
    message(STATUS "Using default CXX11 ABI (not forcing old CX11 ABI).")
endif ()

# enable debug-only code when doing a debug build
if (CMAKE_BUILD_TYPE STREQUAL "Debug")
    list(APPEND META_PRIVATE_COMPILE_DEFINITIONS CPP_UTILITIES_DEBUG_BUILD)
    message(STATUS "Debug build enabled.")
endif ()

# enable logging when option is set
option(LOGGING_ENABLED "specifies whether logging is enabled" OFF)
if (LOGGING_ENABLED)
    list(APPEND META_PRIVATE_COMPILE_DEFINITIONS LOGGING_ENABLED)
    message(STATUS "Logging is enabled.")
endif ()

# determine whether the project is a header-only library
if (SRC_FILES OR GUI_SRC_FILES OR WIDGETS_SRC_FILES OR WIDGETS_UI_FILES OR QML_SRC_FILES OR RES_FILES)
    set(META_HEADER_ONLY_LIB NO)
else ()
    set(META_HEADER_ONLY_LIB YES)
    if ("${META_PROJECT_TYPE}" STREQUAL "application")
        message(FATAL_ERROR "Project ${META_PROJECT_NAME} is supposed to be an application but has only header files.")
    endif ()
    message(STATUS "Project ${META_PROJECT_NAME} is header-only library.")
endif ()

# ensure 3rdParty has been included to configure BUILD_SHARED_LIBS and STATIC_LINKAGE/STATIC_LIBRARY_LINKAGE
include(3rdParty)

# options for enabling/disabling Qt GUI (if available)
if (WIDGETS_HEADER_FILES OR WIDGETS_SRC_FILES OR WIDGETS_UI_FILES OR META_HAS_WIDGETS_GUI)
    if (META_GUI_OPTIONAL)
        option(WIDGETS_GUI "enables/disables building the Qt Widgets GUI: yes (default) or no" ON)
    else ()
        set(WIDGETS_GUI ON)
    endif ()
else ()
    set(WIDGETS_GUI OFF)
endif ()
if (QML_HEADER_FILES OR QML_SRC_FILES OR META_HAS_QUICK_GUI)
    if (META_GUI_OPTIONAL)
        option(QUICK_GUI "enables/disables building the Qt Quick GUI: yes (default) or no" ON)
    else ()
        set(QUICK_GUI ON)
    endif ()
else ()
    set(QUICK_GUI OFF)
endif ()

# find coding style (use style from c++utilities if none included in own project dir)
if (NOT META_NO_TIDY)
    set(CLANG_FORMAT_RULES "${CMAKE_CURRENT_SOURCE_DIR}/coding-style.clang-format")
    if (CPP_UTILITIES_SOURCE_DIR AND NOT EXISTS "${CLANG_FORMAT_RULES}")
        set(CLANG_FORMAT_RULES "${CPP_UTILITIES_SOURCE_DIR}/coding-style.clang-format")
    endif ()
    if (NOT EXISTS "${CLANG_FORMAT_RULES}")
        set(CLANG_FORMAT_RULES "${CPP_UTILITIES_CONFIG_DIRS}/codingstyle.clang-format")
    endif ()
endif ()

# enable testing
enable_testing()
get_directory_property(HAS_PARENT PARENT_DIRECTORY)
if (HAS_PARENT)
    message(STATUS "For the check target to work, it is required to call enable_testing() on the source directory root.")
endif ()

# make finding testfiles in out-of-source-tree build more convenient by adding a reference to the source directory (not only
# useful if there's a test target; this is for instance also used in mocked configuration of syncthingtray) -> add a file
# called "srcdirref" to the build directory; this file contains the path of the sources so tests can easily find test files
# contained in the source directory
file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/srcdirref" "${CMAKE_CURRENT_SOURCE_DIR}")
# -> ensure the directory "testfiles" exists in the build directory; tests of my projects use it by default to create working
# copies of testfiles
file(MAKE_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/testfiles")

# determine source files which might be passed to clang-format or clang-tidy
set(FORMATABLE_FILES
    ${HEADER_FILES}
    ${SRC_FILES}
    ${TEST_HEADER_FILES}
    ${TEST_SRC_FILES}
    ${GUI_HEADER_FILES}
    ${GUI_SRC_FILES}
    ${WIDGETS_HEADER_FILES}
    ${WIDGETS_SRC_FILES}
    ${QML_HEADER_FILES}
    ${QML_SRC_FILES})
# only format C/C++ files (and not eg. QML files)
if (FORMATABLE_FILES)
    list(FILTER
         FORMATABLE_FILES
         INCLUDE
         REGEX
         ".*\\.(c|cpp|h|hpp)")
endif ()

# determine source files which might be passed to cmake-format
set(FORMATABLE_FILES_CMAKE ${CMAKE_CURRENT_SOURCE_DIR}/CMakeLists.txt ${CMAKE_MODULE_FILES})

# add command for symlinking clang-{format,tidy} rules so the tools can find it
if (EXISTS "${CLANG_FORMAT_RULES}")
    add_custom_command(OUTPUT "${CMAKE_CURRENT_SOURCE_DIR}/.clang-format"
                       COMMAND "${CMAKE_COMMAND}" -E create_symlink "${CLANG_FORMAT_RULES}"
                                                     "${CMAKE_CURRENT_SOURCE_DIR}/.clang-format"
                       COMMENT "Linking coding style from ${CLANG_FORMAT_RULES}")
else ()
    message(WARNING "Format rules for clang-format not found.")
endif ()

# allow user to configure creation of tidy targets unless the project disables this via META_NO_TIDY
if (NOT META_NO_TIDY)
    option(CLANG_FORMAT_ENABLED "enables creation of tidy target using clang-format" OFF)
    option(CMAKE_FORMAT_ENABLED "enables creation of tidy target using cmake-format" OFF)
endif ()

# add target for tidying with clang-format
if (NOT META_NO_TIDY AND CLANG_FORMAT_ENABLED AND FORMATABLE_FILES AND EXISTS "${CLANG_FORMAT_RULES}")
    find_program(CLANG_FORMAT_BIN clang-format)
    if (NOT CLANG_FORMAT_BIN)
        message(FATAL_ERROR "Unable to add tidy target; clang-format not found")
    endif ()
    add_custom_target("${META_TARGET_NAME}_tidy"
                      COMMAND "${CLANG_FORMAT_BIN}" -style=file -i ${FORMATABLE_FILES}
                      WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
                      COMMENT "Tidying ${META_PROJECT_NAME} sources using clang-format"
                      DEPENDS "${FORMATABLE_FILES};${CMAKE_CURRENT_SOURCE_DIR}/.clang-format")
    if (NOT TARGET tidy)
        add_custom_target(tidy)
    endif ()
    add_dependencies(tidy "${META_TARGET_NAME}_tidy")

    # also add a test to verify whether sources are tidy
    add_test(NAME "${META_TARGET_NAME}_tidy_test"
             COMMAND "${CLANG_FORMAT_BIN}" -output-replacements-xml -style=file ${FORMATABLE_FILES}
             WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}")
    list(APPEND CHECK_TARGET_DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/.clang-format")
    set_tests_properties("${META_TARGET_NAME}_tidy_test"
                         PROPERTIES FAIL_REGULAR_EXPRESSION
                                    "<replacement.*>.*</replacement>"
                                    REQUIRED_FILES
                                    "${CMAKE_CURRENT_SOURCE_DIR}/.clang-format")
endif ()

# add target for tidying with cmake-format
if (NOT META_NO_TIDY AND CMAKE_FORMAT_ENABLED AND FORMATABLE_FILES_CMAKE)
    find_program(CMAKE_FORMAT_BIN cmake-format)
    if (NOT CMAKE_FORMAT_BIN)
        message(FATAL_ERROR "Unable to add tidy target; cmake-format not found")
    endif ()
    if (NOT META_CMAKE_FORMAT_OPTIONS)
        set(META_CMAKE_FORMAT_OPTIONS
            --tab-size=4
            --separate-ctrl-name-with-space=True
            --line-width=125
            --autosort=False)
    endif ()
    add_custom_target("${META_TARGET_NAME}_cmake_tidy"
                      COMMAND "${CMAKE_FORMAT_BIN}" --in-place ${META_CMAKE_FORMAT_OPTIONS} ${FORMATABLE_FILES_CMAKE}
                      WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
                      COMMENT "Tidying ${META_PROJECT_NAME} sources using cmake-format"
                      DEPENDS "${FORMATABLE_FILES_CMAKE}")
    if (NOT TARGET tidy)
        add_custom_target(tidy)
    endif ()
    add_dependencies(tidy "${META_TARGET_NAME}_cmake_tidy")
endif ()

# add target for static code analysis using clang-tidy
if (NOT META_NO_STATIC_ANALYSIS AND FORMATABLE_FILES)
    option(CLANG_TIDY_ENABLED "enables creation of static-check target using clang-tidy" OFF)
    set(CLANG_TIDY_CHECKS
        ""
        CACHE STRING
              "-*,clang-analyzer-*,cppcoreguidelines-*,modernize-*,performance-*,portability-*,readability-*,android-*")
    if (CLANG_TIDY_ENABLED)
        find_program(CLANG_TIDY_BIN clang-tidy)
        if (NOT CLANG_TIDY_BIN)
            message(FATAL_ERROR "Unable to add tidy target; clang-tidy not found")
        endif ()

        set(CLANG_TIDY_DEPENDS ${FORMATABLE_FILES})

        # compose options for clang-tidy
        set(CLANG_TIDY_OPTIONS -checks="${CLANG_TIDY_CHECKS}" -header-filter="^${META_PROJECT_NAME}/")
        if (EXISTS "${CLANG_FORMAT_RULES}")
            list(APPEND CLANG_TIDY_OPTIONS "-format-style=file")
            list(APPEND CLANG_TIDY_DPENDS "${CMAKE_CURRENT_SOURCE_DIR}/.clang-format")
        endif ()

        # compose CXX flags for clang-tidy
        set(CLANG_TIDY_CXX_FLAGS "")
        if (NOT META_HEADER_ONLY_LIB)
            # deduce flags from target
            set(TARGET_NAME ${META_TARGET_NAME})
            if (NOT BUILD_SHARED_LIBS AND BUILD_STATIC_LIBS)
                set(TARGET_NAME "${TARGET_NAME}_static")
            endif ()
            # set c++ standard
            list(APPEND CLANG_TIDY_CXX_FLAGS "-std=c++$<TARGET_PROPERTY:${TARGET_NAME},CXX_STANDARD>")
            # add compile flags
            set(PROP "$<TARGET_PROPERTY:${TARGET_NAME},COMPILE_FLAGS>")
            list(APPEND CLANG_TIDY_CXX_FLAGS "$<$<BOOL:${PROP}>:$<JOIN:${PROP},$<SEMICOLON>>>")
            # add compile definitions
            set(PROP "$<TARGET_PROPERTY:${TARGET_NAME},COMPILE_DEFINITIONS>")
            list(APPEND CLANG_TIDY_CXX_FLAGS "$<$<BOOL:${PROP}>:-D$<JOIN:${PROP},$<SEMICOLON>-D>>")
            # add include directories
            set(PROP "$<TARGET_PROPERTY:${TARGET_NAME},INCLUDE_DIRECTORIES>")
            list(APPEND CLANG_TIDY_CXX_FLAGS "$<$<BOOL:${PROP}>:-I$<JOIN:${PROP},$<SEMICOLON>-I>>")
        else ()
            # set at least c++ standard for header-only libs
            list(APPEND CLANG_TIDY_CXX_FLAGS "-std=c++${META_CXX_STANDARD}")
        endif ()

        # add a custom command for each source file
        set(CLANG_TIDY_SYMBOLIC_OUTPUT_FILES "")
        foreach (FILE ${FORMATABLE_FILES})
            # skip header files
            if (${FILE} MATCHES ".*\.h")
                continue()
            endif ()

            # use symbolic output file since there's no actual output file (we're just interested in the log)
            set(SYMBOLIC_OUTPUT_FILE "${FILE}.clang-tidy-output")
            list(APPEND CLANG_TIDY_SYMBOLIC_OUTPUT_FILES "${SYMBOLIC_OUTPUT_FILE}")

            add_custom_command(OUTPUT "${SYMBOLIC_OUTPUT_FILE}"
                               COMMAND "${CLANG_TIDY_BIN}" ${FILE} -- ${CLANG_TIDY_CXX_FLAGS}
                               WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
                               COMMENT "Linting ${FILE} using clang-tidy"
                               DEPENDS "${FILE}" COMMAND_EXPAND_LISTS
                               VERBATIM)
        endforeach ()

        # mark all symbolic output files actually as symbolic
        set_source_files_properties(${CLANG_TIDY_SYMBOLIC_OUTPUT_FILES}
                                    PROPERTIES
                                    SYMBOLIC
                                    YES)

        # add targets
        add_custom_target("${META_TARGET_NAME}_static_check"
                          DEPENDS ${CLANG_TIDY_SYMBOLIC_OUTPUT_FILES}
                          COMMENT "Linting ${META_TARGET_NAME} sources using clang-tidy")
        if (NOT TARGET static-check)
            add_custom_target(static-check)
        endif ()
        add_dependencies(static-check "${META_TARGET_NAME}_static_check")
    endif ()
endif ()

# add autotools-style check target
if (NOT TARGET check)
    set(CMAKE_CTEST_COMMAND ${CMAKE_CTEST_COMMAND} -V)
    add_custom_target(check
                      COMMAND ${CMAKE_CTEST_COMMAND}
                      WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
                      DEPENDS "${CHECK_TARGET_DEPENDS}")
endif ()

# enable source code based coverage analysis using clang
option(CLANG_SOURCE_BASED_COVERAGE_ENABLED "enables creation of coverage targets for source-based coverage with clang" OFF)
if (CLANG_SOURCE_BASED_COVERAGE_ENABLED)
    if (NOT CMAKE_HOST_UNIX OR NOT "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
        message(FATAL_ERROR "Source-based coverage only available under UNIX with Clang")
    endif ()
    if (NOT META_PROJECT_TYPE STREQUAL "application" AND DISABLE_SHARED_LIBS)
        message(FATAL_ERROR "Source-based coverage not available when only building static libs")
    endif ()
    set(CLANG_SOURCE_BASED_COVERAGE_AVAILABLE YES)
    set(CLANG_SOURCE_BASED_COVERAGE_FLAGS -fprofile-instr-generate -fcoverage-mapping)
    list(APPEND META_PRIVATE_COMPILE_OPTIONS ${CLANG_SOURCE_BASED_COVERAGE_FLAGS})
    list(APPEND META_ADDITIONAL_LINK_FLAGS ${CLANG_SOURCE_BASED_COVERAGE_FLAGS})
endif ()

# configure creation of install targets
if (NOT META_NO_INSTALL_TARGETS)
    # install targets have not been disabled on project level check whether install targets are disabled by the user this
    # might be useful since install targets seem to cause problems under MacOS
    option(ENABLE_INSTALL_TARGETS "enables creation of install targets" ON)
endif ()

# add install target for extra files
if (NOT META_NO_INSTALL_TARGETS AND ENABLE_INSTALL_TARGETS)
    foreach (EXTRA_FILE ${EXTRA_FILES})
        get_filename_component(EXTRA_DIR ${EXTRA_FILE} DIRECTORY)
        install(FILES ${EXTRA_FILE} DESTINATION "${META_DATA_DIR}/${EXTRA_DIR}" COMPONENT extra-files)
    endforeach ()
    if (NOT TARGET install-extra-files)
        add_custom_target(install-extra-files
                          COMMAND "${CMAKE_COMMAND}"
                                  -DCMAKE_INSTALL_COMPONENT=extra-files -P
                                  "${CMAKE_BINARY_DIR}/cmake_install.cmake")
    endif ()
endif ()

# determine library directory suffix - Applications might be built as libraries under some platforms (eg. Android). Hence
# this is part of BasicConfig and not LibraryConfig.
set(LIB_SUFFIX "" CACHE STRING "specifies the general suffix for the library directory")
set(SELECTED_LIB_SUFFIX "${LIB_SUFFIX}")
set(LIB_SUFFIX_32 "" CACHE STRING "specifies the suffix for the library directory to be used when building 32-bit library")
set(LIB_SUFFIX_64 "" CACHE STRING "specifies the suffix for the library directory to be used when building 64-bit library")
if (LIB_SUFFIX_64 AND CMAKE_SIZEOF_VOID_P MATCHES "8")
    set(SELECTED_LIB_SUFFIX "${LIB_SUFFIX_64}")
elseif (LIB_SUFFIX_32 AND CMAKE_SIZEOF_VOID_P MATCHES "4")
    set(SELECTED_LIB_SUFFIX "${LIB_SUFFIX_32}")
endif ()

set(BASIC_PROJECT_CONFIG_DONE YES)