From b3394ab235b93937321ffd08b8924e57855aac38 Mon Sep 17 00:00:00 2001 From: Carl Dong Date: Tue, 15 Oct 2019 19:28:49 -0400 Subject: contrib: macdeploy: Correctly generate macOS SDK Previously, we did not include the macOS SDK libc++ headers in our SDK creation process and instead used whichever libc++ headers shipped with the clang package we downloaded in depends. This change adds a script (which works on both GNU/Linux and macOS) to correctly generate the macOS SDK including the libc++ headers. This can be thought of as a simplified rewrite of tpoechtrager's script: https://github.com/tpoechtrager/osxcross/blob/d3392f4eae78f3fa3f1fd065fa423f2712825102/tools/gen_sdk_package.sh The location within the SDK where we place the libc++ headers is chosen such that clang's search path detection logic for sysroots would pick up the headers properly. We also document this change. --- contrib/macdeploy/gen-sdk | 94 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 94 insertions(+) create mode 100755 contrib/macdeploy/gen-sdk (limited to 'contrib/macdeploy/gen-sdk') diff --git a/contrib/macdeploy/gen-sdk b/contrib/macdeploy/gen-sdk new file mode 100755 index 0000000000..457d8f5e64 --- /dev/null +++ b/contrib/macdeploy/gen-sdk @@ -0,0 +1,94 @@ +#!/usr/bin/env python3 +import argparse +import plistlib +import pathlib +import sys +import tarfile +import gzip +import os +import contextlib + +@contextlib.contextmanager +def cd(path): + """Context manager that restores PWD even if an exception was raised.""" + old_pwd = os.getcwd() + os.chdir(str(path)) + try: + yield + finally: + os.chdir(old_pwd) + +def run(): + parser = argparse.ArgumentParser( + description=__doc__, formatter_class=argparse.RawTextHelpFormatter) + + parser.add_argument('xcode_app', metavar='XCODEAPP', nargs=1) + parser.add_argument("-o", metavar='OUTSDKTGZ', nargs=1, dest='out_sdktgz', required=False) + + args = parser.parse_args() + + xcode_app = pathlib.Path(args.xcode_app[0]).resolve() + assert xcode_app.is_dir(), "The supplied Xcode.app path '{}' either does not exist or is not a directory".format(xcode_app) + + xcode_app_plist = xcode_app.joinpath("Contents/version.plist") + with xcode_app_plist.open('rb') as fp: + pl = plistlib.load(fp) + xcode_version = pl['CFBundleShortVersionString'] + xcode_build_id = pl['ProductBuildVersion'] + print("Found Xcode (version: {xcode_version}, build id: {xcode_build_id})".format(xcode_version=xcode_version, xcode_build_id=xcode_build_id)) + + sdk_dir = xcode_app.joinpath("Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk") + sdk_plist = sdk_dir.joinpath("System/Library/CoreServices/SystemVersion.plist") + with sdk_plist.open('rb') as fp: + pl = plistlib.load(fp) + sdk_version = pl['ProductVersion'] + sdk_build_id = pl['ProductBuildVersion'] + print("Found MacOSX SDK (version: {sdk_version}, build id: {sdk_build_id})".format(sdk_version=sdk_version, sdk_build_id=sdk_build_id)) + + out_name = "Xcode-{xcode_version}-{xcode_build_id}-extracted-SDK-with-libcxx-headers".format(xcode_version=xcode_version, xcode_build_id=xcode_build_id) + + xcode_libcxx_dir = xcode_app.joinpath("Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1") + assert xcode_libcxx_dir.is_dir() + + if args.out_sdktgz: + out_sdktgz_path = pathlib.Path(args.out_sdktgz_path) + else: + # Construct our own out_sdktgz if not specified on the command line + out_sdktgz_path = pathlib.Path("./{}.tar.gz".format(out_name)) + + def tarfp_add_with_base_change(tarfp, dir_to_add, alt_base_dir): + """Add all files in dir_to_add to tarfp, but prepent MEMBERPREFIX to the files' + names + + e.g. if the only file under /root/bazdir is /root/bazdir/qux, invoking: + + tarfp_add_with_base_change(tarfp, "foo/bar", "/root/bazdir") + + would result in the following members being added to tarfp: + + foo/bar/ -> corresponding to /root/bazdir + foo/bar/qux -> corresponding to /root/bazdir/qux + + """ + def change_tarinfo_base(tarinfo): + if tarinfo.name and tarinfo.name.startswith("./"): + tarinfo.name = str(pathlib.Path(alt_base_dir, tarinfo.name)) + if tarinfo.linkname and tarinfo.linkname.startswith("./"): + tarinfo.linkname = str(pathlib.Path(alt_base_dir, tarinfo.linkname)) + return tarinfo + with cd(dir_to_add): + tarfp.add(".", recursive=True, filter=change_tarinfo_base) + + print("Creating output .tar.gz file...") + with out_sdktgz_path.open("wb") as fp: + with gzip.GzipFile(fileobj=fp, compresslevel=9, mtime=0) as gzf: + with tarfile.open(mode="w", fileobj=gzf) as tarfp: + print("Adding MacOSX SDK {} files...".format(sdk_version)) + tarfp_add_with_base_change(tarfp, sdk_dir, out_name) + print("Adding libc++ headers...") + tarfp_add_with_base_change(tarfp, xcode_libcxx_dir, "{}/usr/include/c++/v1".format(out_name)) + print("Done! Find the resulting gzipped tarball at:") + print(out_sdktgz_path.resolve()) + +if __name__ == '__main__': + run() -- cgit v1.2.3