import re import string import os.path from waflib import Utils from distutils.version import StrictVersion def __run(cmd): try: output = Utils.subprocess.check_output(cmd, stderr=Utils.subprocess.STDOUT, universal_newlines=True) return output.strip() except Exception: return "" def __add_swift_flags(ctx): ctx.env.SWIFT_FLAGS = [ "-frontend", "-c", "-sdk", ctx.env.MACOS_SDK, "-enable-objc-interop", "-emit-objc-header", "-parse-as-library", ] verRe = re.compile("(?i)version\s?([\d.]+)") ctx.env.SWIFT_VERSION = verRe.search(__run([ctx.env.SWIFT, '-version'])).group(1) # prevent possible breakages with future swift versions if StrictVersion(ctx.env.SWIFT_VERSION) >= StrictVersion("6.0"): ctx.env.SWIFT_FLAGS.extend(["-swift-version", "5"]) if ctx.is_debug_build(): ctx.env.SWIFT_FLAGS.append("-g") if ctx.is_optimization(): ctx.env.SWIFT_FLAGS.append("-O") def __add_static_swift_library_linking_flags(ctx, swift_library): ctx.env.append_value('LINKFLAGS', [ '-L%s' % swift_library, '-Xlinker', '-force_load_swift_libs', '-lc++', ]) def __add_dynamic_swift_library_linking_flags(ctx, swift_library): ctx.env.append_value('LINKFLAGS', ['-L%s' % swift_library]) # ABI compatibility if StrictVersion(ctx.env.SWIFT_VERSION) >= StrictVersion("5.0"): ctx.env.append_value('LINKFLAGS', [ '-Xlinker', '-rpath', '-Xlinker', '/usr/lib/swift', '-L/usr/lib/swift', ]) ctx.env.append_value('LINKFLAGS', [ '-Xlinker', '-rpath', '-Xlinker', swift_library, ]) def __find_swift_library(ctx): swift_libraries = {} # look for set lib paths in passed environment variables if 'SWIFT_LIB_DYNAMIC' in ctx.environ: swift_libraries['SWIFT_LIB_DYNAMIC'] = ctx.environ['SWIFT_LIB_DYNAMIC'] if 'SWIFT_LIB_STATIC' in ctx.environ: swift_libraries['SWIFT_LIB_STATIC'] = ctx.environ['SWIFT_LIB_STATIC'] # search for swift libs relative to the swift compiler executable swift_library_relative_paths = { 'SWIFT_LIB_DYNAMIC': '../../lib/swift/macosx', 'SWIFT_LIB_STATIC': '../../lib/swift_static/macosx' } for lib_type, path in swift_library_relative_paths.items(): if lib_type not in swift_libraries: lib_path = os.path.join(ctx.env.SWIFT, path) swift_library = ctx.root.find_dir(lib_path) if swift_library is not None: swift_libraries[lib_type] = swift_library.abspath() # fall back to xcode-select path swift_library_paths = { 'SWIFT_LIB_DYNAMIC': [ 'Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/macosx', 'usr/lib/swift/macosx' ], 'SWIFT_LIB_STATIC': [ 'Toolchains/XcodeDefault.xctoolchain/usr/lib/swift_static/macosx', 'usr/lib/swift_static/macosx' ] } dev_path = __run(['xcode-select', '-p'])[1:] for lib_type, paths in swift_library_paths.items(): for path in paths: if lib_type not in swift_libraries: swift_library = ctx.root.find_dir([dev_path, path]) if swift_library is not None: swift_libraries[lib_type] = swift_library.abspath() break else: break # check if library paths were found ctx.start_msg('Checking for dynamic Swift Library') if 'SWIFT_LIB_DYNAMIC' in swift_libraries: ctx.end_msg(swift_libraries['SWIFT_LIB_DYNAMIC']) else: ctx.end_msg(False) ctx.start_msg('Checking for static Swift Library') if 'SWIFT_LIB_STATIC' in swift_libraries: ctx.end_msg(swift_libraries['SWIFT_LIB_STATIC']) ctx.env['SWIFT_LIB_STATIC'] = swift_libraries['SWIFT_LIB_STATIC'] else: ctx.end_msg(False) enableStatic = getattr(ctx.options, 'enable_swift-static') if (enableStatic) and 'SWIFT_LIB_STATIC' in swift_libraries: __add_static_swift_library_linking_flags(ctx, swift_libraries['SWIFT_LIB_STATIC']) else: __add_dynamic_swift_library_linking_flags(ctx, swift_libraries['SWIFT_LIB_DYNAMIC']) def __find_macos_sdk(ctx): ctx.start_msg('Checking for macOS SDK') sdk = None sdk_build_version = None sdk_version = None # look for set macOS SDK paths and version in passed environment variables if 'MACOS_SDK' in ctx.environ: sdk = ctx.environ['MACOS_SDK'] if 'MACOS_SDK_VERSION' in ctx.environ: ctx.env.MACOS_SDK_VERSION = ctx.environ['MACOS_SDK_VERSION'] # find macOS SDK paths and version if not sdk: sdk = __run(['xcrun', '--sdk', 'macosx', '--show-sdk-path']) if not ctx.env.MACOS_SDK_VERSION: # show-sdk-build-version: is not available on older command line tools, but return a build version (eg 17A360) # show-sdk-version: is always available, but on older dev tools it's only the major version sdk_build_version = __run(['xcrun', '--sdk', 'macosx', '--show-sdk-build-version']) sdk_version = __run(['xcrun', '--sdk', 'macosx', '--show-sdk-version']) if sdk: ctx.env.MACOS_SDK = sdk build_version = '10.10.0' if not ctx.env.MACOS_SDK_VERSION: # convert build version to a version string # first 2 two digits are the major version, starting with 15 which is 10.11 (offset of 4) # 1 char is the minor version, A => 0, B => 1 and ongoing # last digits are bugfix version, which are not relevant for us # eg 16E185 => 10.12.4, 17A360 => 10.13, 18B71 => 10.14.1 if sdk_build_version and isinstance(sdk_build_version, str): verRe = re.compile("(\d+)(\D+)(\d+)") version_parts = verRe.search(sdk_build_version) major = int(version_parts.group(1)) - 4 minor = string.ascii_lowercase.index(version_parts.group(2).lower()) build_version = '10.' + str(major) + '.' + str(minor) # from 20 onwards macOS 11.0 starts if int(version_parts.group(1)) >= 20: build_version = '11.' + str(minor) if not isinstance(sdk_version, str): sdk_version = '10.10.0' # pick the higher version, always pick sdk over build if newer if StrictVersion(build_version) > StrictVersion(sdk_version): ctx.env.MACOS_SDK_VERSION = build_version else: ctx.env.MACOS_SDK_VERSION = sdk_version ctx.end_msg(sdk + ' (version found: ' + ctx.env.MACOS_SDK_VERSION + ')') else: ctx.end_msg(False) def __find_swift_compiler(ctx): ctx.start_msg('Checking for swift (Swift compiler)') swift = '' # look for set swift paths in passed environment variables if 'SWIFT' in ctx.environ: swift = ctx.environ['SWIFT'] # find swift executable if not swift: swift = __run(['xcrun', '-find', 'swift']) if swift: ctx.end_msg(swift) ctx.env.SWIFT = swift __add_swift_flags(ctx) __find_swift_library(ctx) else: ctx.end_msg(False) def configure(ctx): if ctx.env.DEST_OS == "darwin": __find_macos_sdk(ctx) if ctx.options.enable_swift is not False: __find_swift_compiler(ctx)