include(CMakeParseArguments)

macro(set_limited_api)
    if (WIN32 AND NOT EXISTS "${PYTHON_LIMITED_LIBRARIES}")
        message(FATAL_ERROR "The Limited API was enabled, but ${PYTHON_LIMITED_LIBRARIES} was not found!")
    endif()
    message(STATUS "******************************************************")
    message(STATUS "** Limited API enabled ${PYTHON_LIMITED_LIBRARIES}")
    message(STATUS "******************************************************")
endmacro()

macro(set_debug_build)
    set(SHIBOKEN_BUILD_TYPE "Debug")

    if(NOT PYTHON_DEBUG_LIBRARIES)
        message(WARNING "Python debug shared library not found; \
            assuming python was built with shared library support disabled.")
    endif()

    if(NOT PYTHON_WITH_DEBUG)
        message(WARNING "Compiling shiboken6 with debug enabled, \
            but the python executable was not compiled with debug support.")
    else()
        set(SBK_PKG_CONFIG_PY_DEBUG_DEFINITION " -DPy_DEBUG")
    endif()

    if (PYTHON_WITH_COUNT_ALLOCS)
        set(SBK_PKG_CONFIG_PY_DEBUG_DEFINITION "${SBK_PKG_CONFIG_PY_DEBUG_DEFINITION} -DCOUNT_ALLOCS")
    endif()
endmacro()

macro(setup_sanitize_address)
    # Currently this does not check that the clang / gcc version used supports Address sanitizer,
    # so once again, use at your own risk.
    add_compile_options("-fsanitize=address" "-g" "-fno-omit-frame-pointer")
    # We need to add the sanitize address option to all linked executables / shared libraries
    # so that proper sanitizer symbols are linked in.
    #
    # Note that when running tests, you may need to set an additional environment variable
    # in set_tests_properties for shiboken6 / pyside tests, or exported in your shell. Address
    # sanitizer will tell you what environment variable needs to be exported. For example:
    # export DYLD_INSERT_LIBRARIES=/Applications/Xcode.app/Contents/Developer/Toolchains/
    #   ./XcodeDefault.xctoolchain/usr/lib/clang/8.1.0/lib/darwin/libclang_rt.asan_osx_dynamic.dylib
    set(CMAKE_CXX_STANDARD_LIBRARIES "${CMAKE_STANDARD_LIBRARIES} -fsanitize=address")
endmacro()

macro(set_cmake_cxx_flags)
if(MSVC)
    # Qt5: this flag has changed from /Zc:wchar_t- in Qt4.X
    set(CMAKE_CXX_FLAGS "/Zc:wchar_t /GR /EHsc /DWIN32 /D_WINDOWS /D_SCL_SECURE_NO_WARNINGS")
    #set(CMAKE_CXX_FLAGS "/Zc:wchar_t /GR /EHsc /DNOCOLOR /DWIN32 /D_WINDOWS /D_SCL_SECURE_NO_WARNINGS") # XXX
else()
    if(CMAKE_HOST_UNIX AND NOT CYGWIN)
        add_definitions(-fPIC)
        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -fvisibility=hidden -Wno-strict-aliasing")
    endif()
    set(CMAKE_CXX_FLAGS_DEBUG "-g")
    option(ENABLE_GCC_OPTIMIZATION "Enable specific GCC flags to optimization library \
        size and performance. Only available on Release Mode" 0)
    if(ENABLE_GCC_OPTIMIZATION)
        set(CMAKE_CXX_FLAGS_RELEASE "-DNDEBUG -Os -Wl,-O1")
        if(NOT CMAKE_HOST_APPLE)
            set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wl,--hash-style=gnu")
        endif()
    endif()
    if(CMAKE_HOST_APPLE)
        # ALTERNATIVE_QT_INCLUDE_DIR is deprecated, because CMake takes care of finding the proper
        # include folders using the qmake found in the environment. Only use it for now in case
        # something goes wrong with the cmake process.
        if(ALTERNATIVE_QT_INCLUDE_DIR AND NOT QT_INCLUDE_DIR)
            set(QT_INCLUDE_DIR ${ALTERNATIVE_QT_INCLUDE_DIR})
        endif()
    endif()
endif()

endmacro()

macro(set_python_site_packages)
    execute_process(
        COMMAND ${PYTHON_EXECUTABLE} -c "if True:
            import sysconfig
            from os.path import sep

            # /home/qt/dev/env/lib/python3.9/site-packages
            lib_path = sysconfig.get_path('purelib')

            # /home/qt/dev/env
            data_path = sysconfig.get_path('data')

            # /lib/python3.9/site-packages
            rel_path = lib_path.replace(data_path, '')

            print(f'${CMAKE_INSTALL_PREFIX}{rel_path}'.replace(sep, '/'))
            "
        OUTPUT_VARIABLE PYTHON_SITE_PACKAGES
        OUTPUT_STRIP_TRAILING_WHITESPACE)
    if (NOT PYTHON_SITE_PACKAGES)
        message(FATAL_ERROR "Could not detect Python module installation directory.")
    elseif (APPLE)
        message(STATUS "!!! The generated bindings will be installed on ${PYTHON_SITE_PACKAGES}, \
            is it right!?")
    endif()
endmacro()

macro(set_python_config_suffix)
    if (PYTHON_LIMITED_API)
        if(WIN32)
            set(PYTHON_EXTENSION_SUFFIX "")
        else()
            set(PYTHON_EXTENSION_SUFFIX ".abi3")
        endif()
        set(PYTHON_CONFIG_SUFFIX ".abi3")
    else()
        set(PYTHON_CONFIG_SUFFIX "${PYTHON_EXTENSION_SUFFIX}")
    endif()
endmacro()

macro(setup_clang)
    # Find libclang using the environment variables LLVM_INSTALL_DIR,
    # CLANG_INSTALL_DIR using standard cmake.
    # Use CLANG_INCLUDE_DIRS and link to libclang.
    if(DEFINED ENV{LLVM_INSTALL_DIR})
        list(PREPEND CMAKE_PREFIX_PATH "$ENV{LLVM_INSTALL_DIR}")
        list(PREPEND CMAKE_FIND_ROOT_PATH "$ENV{LLVM_INSTALL_DIR}")
    elseif(DEFINED ENV{CLANG_INSTALL_DIR})
        list(PREPEND CMAKE_PREFIX_PATH "$ENV{CLANG_INSTALL_DIR}")
        list(PREPEND CMAKE_FIND_ROOT_PATH "$ENV{CLANG_INSTALL_DIR}")
    endif()

    find_package(Clang CONFIG REQUIRED)
    # Need to explicitly handle the version check, because the Clang package doesn't.
    if (LLVM_PACKAGE_VERSION AND LLVM_PACKAGE_VERSION VERSION_LESS "9.0")
        message(FATAL_ERROR "You need LLVM version 9.0 or greater to build.")
    endif()

    # CLANG_LIBRARY is read out from the cmake cache to deploy libclang
    get_target_property(CLANG_BUILD_TYPE libclang IMPORTED_CONFIGURATIONS)
    get_target_property(CLANG_LIBRARY_NAME libclang IMPORTED_LOCATION_${CLANG_BUILD_TYPE})
    set(CLANG_LIBRARY "${CLANG_LIBRARY_NAME}" CACHE FILEPATH "libclang")
    message(STATUS "CLANG: ${Clang_DIR}, ${CLANG_LIBRARY} detected")
endmacro()

macro(set_quiet_build)
    # Don't display "up-to-date / install" messages when installing, to reduce visual clutter.
    set(CMAKE_INSTALL_MESSAGE NEVER)
    # Override message not to display info messages when doing a quiet build.
    function(message)
        list(GET ARGV 0 MessageType)
        if (MessageType STREQUAL FATAL_ERROR OR
            MessageType STREQUAL SEND_ERROR OR
            MessageType STREQUAL WARNING OR
            MessageType STREQUAL AUTHOR_WARNING)
                list(REMOVE_AT ARGV 0)
                _message(${MessageType} "${ARGV}")
        endif()
    endfunction()
endmacro()

macro(get_python_extension_suffix)
  execute_process(
    COMMAND ${PYTHON_EXECUTABLE} -c "if True:
       import sys
       import sysconfig
       suffix = sysconfig.get_config_var('EXT_SUFFIX')
       pos = suffix.rfind('.')
       if pos > 0:
           print(suffix[:pos])
       else:
           print(f'Unable to determine PYTHON_EXTENSION_SUFFIX from EXT_SUFFIX: \"{suffix}\"',
                 file=sys.stderr)
       "
    OUTPUT_VARIABLE PYTHON_EXTENSION_SUFFIX
    OUTPUT_STRIP_TRAILING_WHITESPACE)
  message(STATUS "PYTHON_EXTENSION_SUFFIX: " ${PYTHON_EXTENSION_SUFFIX})
endmacro()

macro(shiboken_parse_all_arguments prefix type flags options multiopts)
    cmake_parse_arguments(${prefix} "${flags}" "${options}" "${multiopts}" ${ARGN})
    if(DEFINED ${prefix}_UNPARSED_ARGUMENTS)
        message(FATAL_ERROR "Unknown arguments were passed to ${type} (${${prefix}_UNPARSED_ARGUMENTS}).")
    endif()
endmacro()

macro(shiboken_check_if_limited_api)
    # On Windows, PYTHON_LIBRARIES can be a list. Example:
    #    optimized;C:/Python36/libs/python36.lib;debug;C:/Python36/libs/python36_d.lib
    # On other platforms, this result is not used at all.
    execute_process(
        COMMAND ${PYTHON_EXECUTABLE} -c "if True:
            import os
            for lib in '${PYTHON_LIBRARIES}'.split(';'):
                if '/' in lib and os.path.isfile(lib):
                    prefix, py = lib.rsplit('/', 1)
                    if py.startswith('python3'):
                        print(prefix + '/python3.lib')
                        break
            "
        OUTPUT_VARIABLE PYTHON_LIMITED_LIBRARIES
        OUTPUT_STRIP_TRAILING_WHITESPACE)

    if(FORCE_LIMITED_API STREQUAL "yes")
        if (${PYTHON_VERSION_MAJOR} EQUAL 3 AND ${PYTHON_VERSION_MINOR} GREATER 4)
            # GREATER_EQUAL is available only from cmake 3.7 on. We mean python 3.5 .
            set(PYTHON_LIMITED_API 1)
        endif()
        if(WIN32)
            if (${PYTHON_VERSION_MAJOR} EQUAL 3 AND ${PYTHON_VERSION_MINOR} GREATER 4)
                # PYSIDE-560: XXX maybe add an option to setup.py as override
                set(SHIBOKEN_PYTHON_LIBRARIES ${PYTHON_LIMITED_LIBRARIES})
            endif()
        endif()
    endif()
endmacro()


macro(shiboken_find_required_python)
    if(${ARGC} GREATER 0)
        find_package(PythonInterp ${ARGV0} REQUIRED)
        find_package(PythonLibs ${ARGV0} REQUIRED)
    else()
        # If no version is specified, just use any interpreter that can be found (from PATH).
        # This is useful for super-project builds, so that the default system interpeter
        # gets picked up (e.g. /usr/bin/python and not /usr/bin/python2.7).
        find_package(PythonInterp REQUIRED)
        find_package(PythonLibs REQUIRED)
    endif()
    shiboken_validate_python_version()

    set(SHIBOKEN_PYTHON_INTERPRETER "${PYTHON_EXECUTABLE}")
    set_property(GLOBAL PROPERTY SHIBOKEN_PYTHON_INTERPRETER "${PYTHON_EXECUTABLE}")
endmacro()

macro(shiboken_validate_python_version)
    if(PYTHON_VERSION_MAJOR EQUAL "3" AND PYTHON_VERSION_MINOR LESS "5")
            message(FATAL_ERROR
                   "Shiboken requires Python 3.5+.")
    endif()
endmacro()

macro(shiboken_compute_python_includes)
    shiboken_parse_all_arguments(
        "SHIBOKEN_COMPUTE_INCLUDES" "shiboken_compute_python_includes"
        "IS_CALLED_FROM_EXPORT" "" "" ${ARGN})


    # If the installed shiboken config file is used,
    # append the found Python include dirs as an interface property on the libshiboken target.
    # This needs to be dynamic because the user of the library might have python installed
    # in a different path than when shiboken was originally built.
    # Otherwise if shiboken is currently being built itself (either as standalone, or super project
    # build) append the include dirs as PUBLIC.
    if (SHIBOKEN_COMPUTE_INCLUDES_IS_CALLED_FROM_EXPORT)
        #TODO target_include_directories works on imported targets only starting with v3.11.0.
        set_property(TARGET Shiboken6::libshiboken
                     APPEND PROPERTY INTERFACE_INCLUDE_DIRECTORIES ${PYTHON_INCLUDE_DIRS})
    else()
        target_include_directories(libshiboken
                                   PUBLIC $<BUILD_INTERFACE:${PYTHON_INCLUDE_DIRS}>)
    endif()


    set(SHIBOKEN_PYTHON_INCLUDE_DIRS "${PYTHON_INCLUDE_DIRS}")

    set_property(GLOBAL PROPERTY shiboken_python_include_dirs "${SHIBOKEN_PYTHON_INCLUDE_DIRS}")

    message(STATUS
            "SHIBOKEN_PYTHON_INCLUDE_DIRS computed to value: '${SHIBOKEN_PYTHON_INCLUDE_DIRS}'")
endmacro()

# Given a list of the following form:
#     optimized;C:/Python36/libs/python36.lib;debug;C:/Python36/libs/python36_d.lib
# choose the corresponding library to use, based on the current configuration type.
function(shiboken_get_library_for_current_config library_list current_config out_var)
    list(FIND library_list "optimized" optimized_found)
    list(FIND library_list "general" general_found)
    list(FIND library_list "debug" debug_found)

    if (optimized_found OR general_found OR debug_found)
        # Iterate over library list to find the most appropriate library.
        foreach(token ${library_list})
            if(token STREQUAL "optimized" OR token STREQUAL "general")
                set(is_debug 0)
                set(token1 1)
                set(lib "")
            elseif(token STREQUAL "debug")
                set(is_debug 1)
                set(token1 1)
                set(lib "")
            elseif(EXISTS ${token})
                set(lib ${token})
                set(token2 1)
            else()
                set(token1 0)
                set(token2 0)
                set(lib "")
            endif()

            if(token1 AND token2)
                if((is_debug AND lib AND current_config STREQUAL "Debug")
                   OR (NOT is_debug AND lib AND (NOT current_config STREQUAL "Debug")))
                    set(${out_var} ${lib} PARENT_SCOPE)
                    return()
                endif()
            endif()
        endforeach()
    else()
        # No configuration specific libraries found, just set the original value.
        set(${out_var} "${library_list}" PARENT_SCOPE)
    endif()

endfunction()

macro(shiboken_compute_python_libraries)
    shiboken_parse_all_arguments(
        "SHIBOKEN_COMPUTE_LIBS" "shiboken_compute_python_libraries"
        "IS_CALLED_FROM_EXPORT" "" "" ${ARGN})

    if (NOT SHIBOKEN_PYTHON_LIBRARIES)
        set(SHIBOKEN_PYTHON_LIBRARIES "")
    endif()

    if(CMAKE_BUILD_TYPE STREQUAL "Debug")
        if(WIN32 AND NOT SHIBOKEN_PYTHON_LIBRARIES)
            set(SHIBOKEN_PYTHON_LIBRARIES ${PYTHON_DEBUG_LIBRARIES})
        endif()
    endif()

    if(CMAKE_BUILD_TYPE STREQUAL "Release")
        if(WIN32 AND NOT SHIBOKEN_PYTHON_LIBRARIES)
            set(SHIBOKEN_PYTHON_LIBRARIES ${PYTHON_LIBRARIES})
        endif()
    endif()

    # If the resulting variable
    # contains a "debug;X;optimized;Y" list like described in shiboken_check_if_limited_api,
    # make sure to pick just one, so that the final generator expressions are valid.
    shiboken_get_library_for_current_config("${SHIBOKEN_PYTHON_LIBRARIES}" "${CMAKE_BUILD_TYPE}" "SHIBOKEN_PYTHON_LIBRARIES")

    if(APPLE)
        set(SHIBOKEN_PYTHON_LIBRARIES "-undefined dynamic_lookup")
    endif()

    # If the installed shiboken config file is used,
    # append the computed Python libraries as an interface property on the libshiboken target.
    # This needs to be dynamic because the user of the library might have python installed
    # in a different path than when shiboken was originally built.
    # Otherwise if shiboken is currently being built itself (either as standalone, or super project
    # build) append the libraries as PUBLIC.
    if (SHIBOKEN_COMPUTE_LIBS_IS_CALLED_FROM_EXPORT)
        #TODO target_link_libraries works on imported targets only starting with v3.11.0.
        set_property(TARGET Shiboken6::libshiboken
                     APPEND PROPERTY INTERFACE_LINK_LIBRARIES ${SHIBOKEN_PYTHON_LIBRARIES})
    else()
        target_link_libraries(libshiboken
                              PUBLIC $<BUILD_INTERFACE:${SHIBOKEN_PYTHON_LIBRARIES}>)
    endif()

    set_property(GLOBAL PROPERTY shiboken_python_libraries "${SHIBOKEN_PYTHON_LIBRARIES}")

    message(STATUS "SHIBOKEN_PYTHON_LIBRARIES computed to value: '${SHIBOKEN_PYTHON_LIBRARIES}'")
endmacro()

function(shiboken_check_if_built_and_target_python_are_compatible)
    if(NOT SHIBOKEN_PYTHON_VERSION_MAJOR STREQUAL PYTHON_VERSION_MAJOR)
        message(FATAL_ERROR "The detected Python major version is not \
compatible with the Python major version which was used when Shiboken was built.
Built with: '${SHIBOKEN_PYTHON_VERSION_MAJOR}.${SHIBOKEN_PYTHON_VERSION_MINOR}' \
Detected: '${PYTHON_VERSION_MAJOR}.${PYTHON_VERSION_MINOR}'")
    else()
        if(NOT SHIBOKEN_PYTHON_LIMITED_API
           AND NOT SHIBOKEN_PYTHON_VERSION_MINOR STREQUAL PYTHON_VERSION_MINOR)
            message(FATAL_ERROR
                    "The detected Python minor version is not compatible with the Python minor \
version which was used when Shiboken was built. Consider building shiboken with \
FORCE_LIMITED_API set to '1', so that only the Python major version matters.
Built with: '${SHIBOKEN_PYTHON_VERSION_MAJOR}.${SHIBOKEN_PYTHON_VERSION_MINOR}' \
Detected: '${PYTHON_VERSION_MAJOR}.${PYTHON_VERSION_MINOR}'")
        endif()
    endif()
endfunction()

function(shiboken_internal_disable_pkg_config)
    # Disable pkg-config by setting an empty executable path. There's no documented way to
    # mark the package as not found, but we can force all pkg_check_modules calls to do nothing
    # by setting the variable to an empty value.
    set(PKG_CONFIG_EXECUTABLE "" CACHE STRING "Disabled pkg-config usage." FORCE)
endfunction()

function(shiboken_internal_disable_pkg_config_if_needed)
    if(SHIBOKEN_SKIP_PKG_CONFIG_ADJUSTMENT)
        return()
    endif()

    # pkg-config should not be used by default on Darwin platforms.
    if(APPLE)
        set(pkg_config_enabled OFF)
    else()
        set(pkg_config_enabled ON)
    endif()

    if(NOT pkg_config_enabled)
        shiboken_internal_disable_pkg_config()
    endif()
endfunction()

macro(compute_config_py_values
      full_version_var_name
        )
    string(TIMESTAMP PACKAGE_BUILD_DATE "%Y-%m-%dT%H:%M:%S+00:00" UTC)
    if (PACKAGE_BUILD_DATE)
        set(PACKAGE_BUILD_DATE "__build_date__ = '${PACKAGE_BUILD_DATE}'")
    endif()

    if (PACKAGE_SETUP_PY_PACKAGE_VERSION)
        set(PACKAGE_SETUP_PY_PACKAGE_VERSION_ASSIGNMENT "__setup_py_package_version__ = '${PACKAGE_SETUP_PY_PACKAGE_VERSION}'")
        set(FINAL_PACKAGE_VERSION ${PACKAGE_SETUP_PY_PACKAGE_VERSION})
    else()
        set(FINAL_PACKAGE_VERSION ${${full_version_var_name}})
    endif()

    if (PACKAGE_SETUP_PY_PACKAGE_TIMESTAMP)
        set(PACKAGE_SETUP_PY_PACKAGE_TIMESTAMP_ASSIGNMENT "__setup_py_package_timestamp__ = '${PACKAGE_SETUP_PY_PACKAGE_TIMESTAMP}'")
    else()
        set(PACKAGE_SETUP_PY_PACKAGE_TIMESTAMP_ASSIGNMENT "")
    endif()

    find_package(Git)
    if(GIT_FOUND)
        # Check if current source folder is inside a git repo, so that commit information can be
        # queried.
        execute_process(
          COMMAND ${GIT_EXECUTABLE} rev-parse --git-dir
          OUTPUT_VARIABLE PACKAGE_SOURCE_IS_INSIDE_REPO
          ERROR_QUIET
          OUTPUT_STRIP_TRAILING_WHITESPACE)

        if(PACKAGE_SOURCE_IS_INSIDE_REPO)
            # Force git dates to be UTC-based.
            set(ENV{TZ} UTC)
            execute_process(
              COMMAND ${GIT_EXECUTABLE} --no-pager show --date=format-local:%Y-%m-%dT%H:%M:%S+00:00 -s --format=%cd HEAD
              OUTPUT_VARIABLE PACKAGE_BUILD_COMMIT_DATE
              OUTPUT_STRIP_TRAILING_WHITESPACE)
            if(PACKAGE_BUILD_COMMIT_DATE)
                set(PACKAGE_BUILD_COMMIT_DATE "__build_commit_date__ = '${PACKAGE_BUILD_COMMIT_DATE}'")
            endif()
            unset(ENV{TZ})

            execute_process(
              COMMAND ${GIT_EXECUTABLE} rev-parse HEAD
              OUTPUT_VARIABLE PACKAGE_BUILD_COMMIT_HASH
              OUTPUT_STRIP_TRAILING_WHITESPACE)
            if(PACKAGE_BUILD_COMMIT_HASH)
                set(PACKAGE_BUILD_COMMIT_HASH "__build_commit_hash__ = '${PACKAGE_BUILD_COMMIT_HASH}'")
            endif()

            execute_process(
              COMMAND ${GIT_EXECUTABLE} describe HEAD
              OUTPUT_VARIABLE PACKAGE_BUILD_COMMIT_HASH_DESCRIBED
              OUTPUT_STRIP_TRAILING_WHITESPACE)
            if(PACKAGE_BUILD_COMMIT_HASH_DESCRIBED)
                set(PACKAGE_BUILD_COMMIT_HASH_DESCRIBED "__build_commit_hash_described__ = '${PACKAGE_BUILD_COMMIT_HASH_DESCRIBED}'")
            endif()

        endif()
    endif()

endmacro()

# Creates a new target called "${library_name}_generator" which
# depends on the mjb_rejected_classes.log file generated by shiboken.
# This target is added as a dependency to ${library_name} target.
# This file's timestamp informs cmake when the last generation was
# done, without force-updating the timestamps of the generated class
# cpp files.
# In practical terms this means that changing some injection code in
# an xml file that modifies only one specific class cpp file, will
# not force rebuilding all the cpp files, and thus allow for better
# incremental builds.
macro(create_generator_target library_name)
    add_custom_target(${library_name}_generator DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/mjb_rejected_classes.log")
    add_dependencies(${library_name} ${library_name}_generator)
endmacro()
