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221
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1 #!/usr/bin/env python3
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2
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3 """Helps manage sysroots."""
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4
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5 import argparse
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6 import os
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7 import subprocess
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8 import sys
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9
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10
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11 def make_fake_sysroot(out_dir):
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12 def cmdout(cmd):
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13 return subprocess.check_output(cmd).decode(sys.stdout.encoding).strip()
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14
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15 if sys.platform == 'win32':
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236
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16 def mkjunction(dst, src):
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17 subprocess.check_call(['mklink', '/j', dst, src], shell=True)
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18
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19 os.mkdir(out_dir)
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221
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20 p = os.getenv('ProgramFiles(x86)', 'C:\\Program Files (x86)')
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21
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22 winsdk = os.getenv('WindowsSdkDir')
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23 if not winsdk:
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24 winsdk = os.path.join(p, 'Windows Kits', '10')
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25 print('%WindowsSdkDir% not set. You might want to run this from')
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26 print('a Visual Studio cmd prompt. Defaulting to', winsdk)
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236
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27 os.mkdir(os.path.join(out_dir, 'Windows Kits'))
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28 mkjunction(os.path.join(out_dir, 'Windows Kits', '10'), winsdk)
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221
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29
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30 vswhere = os.path.join(
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31 p, 'Microsoft Visual Studio', 'Installer', 'vswhere')
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32 vcid = 'Microsoft.VisualStudio.Component.VC.Tools.x86.x64'
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33 vsinstalldir = cmdout(
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34 [vswhere, '-latest', '-products', '*', '-requires', vcid,
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35 '-property', 'installationPath'])
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36
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37 mkjunction(os.path.join(out_dir, 'VC'),
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38 os.path.join(vsinstalldir, 'VC'))
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236
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39 # Not all MSVC versions ship the DIA SDK, so the junction destination
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40 # might not exist. That's fine.
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41 mkjunction(os.path.join(out_dir, 'DIA SDK'),
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42 os.path.join(vsinstalldir, 'DIA SDK'))
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221
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43 elif sys.platform == 'darwin':
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44 # The SDKs used by default in compiler-rt/cmake/base-config-ix.cmake.
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45 # COMPILER_RT_ENABLE_IOS defaults to on.
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46 # COMPILER_RT_ENABLE_WATCHOS and COMPILER_RT_ENABLE_TV default to off.
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47 # compiler-rt/cmake/config-ix.cmake sets DARWIN_EMBEDDED_PLATFORMS
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48 # depending on these.
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49 sdks = ['macosx', 'iphoneos', 'iphonesimulator']
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50 os.mkdir(out_dir)
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51 for sdk in sdks:
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52 sdkpath = cmdout(['xcrun', '-sdk', sdk, '-show-sdk-path'])
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53 # sdkpath is something like /.../SDKs/MacOSX11.1.sdk, which is a
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54 # symlink to MacOSX.sdk in the same directory. Resolve the symlink,
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55 # to make the symlink in out_dir less likely to break when the SDK
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56 # is updated (which will bump the number on xcrun's output, but not
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57 # on the symlink destination).
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58 sdkpath = os.path.realpath(sdkpath)
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59 os.symlink(sdkpath, os.path.join(out_dir, os.path.basename(sdkpath)))
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60 else:
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61 os.symlink('/', out_dir)
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62
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63 print('Done. Pass these flags to cmake:')
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64 abs_out_dir = os.path.abspath(out_dir)
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65 if sys.platform == 'win32':
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66 # CMake doesn't like backslashes in commandline args.
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67 abs_out_dir = abs_out_dir.replace(os.path.sep, '/')
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68 print(' -DLLVM_WINSYSROOT=' + abs_out_dir)
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69 elif sys.platform == 'darwin':
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70 flags = [
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71 '-DCMAKE_OSX_SYSROOT=' + os.path.join(abs_out_dir, 'MacOSX.sdk'),
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72
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73 # For find_darwin_sdk_dir() in
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74 # compiler-rt/cmake/Modules/CompilerRTDarwinUtils.cmake
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75 '-DDARWIN_macosx_CACHED_SYSROOT=' +
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76 os.path.join(abs_out_dir, 'MacOSX.sdk'),
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77 '-DDARWIN_iphoneos_CACHED_SYSROOT=' +
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78 os.path.join(abs_out_dir, 'iPhoneOS.sdk'),
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79 '-DDARWIN_iphonesimulator_CACHED_SYSROOT=' +
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80 os.path.join(abs_out_dir, 'iPhoneSimulator.sdk'),
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81 ]
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82 print(' ' + ' '.join(flags))
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83 else:
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84 print(' -DCMAKE_SYSROOT=' + abs_out_dir + ' to cmake.')
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85
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86
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87 def main():
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88 parser = argparse.ArgumentParser(description=__doc__)
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89
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90 subparsers = parser.add_subparsers(dest='command', required=True)
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91
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92 makefake = subparsers.add_parser('make-fake',
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93 help='Create a sysroot that symlinks to local directories.')
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94 makefake.add_argument('--out-dir', required=True)
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95
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96 args = parser.parse_args()
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97
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98 assert args.command == 'make-fake'
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99 make_fake_sysroot(args.out_dir)
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100
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101
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102 if __name__ == '__main__':
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103 main()
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