GN Rule to build Cronet Dynamic Framework for iOS.

components/cronet/tools/package_ios.py

 #!/usr/bin/python
 # Copyright 2016 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """
 package_ios.py - Build and Package Release and Rebug fat libraries for iOS.
 """
 
 import argparse
@@ skipping 65 matching lines @@
       shutil.copytree(os.path.join('out', build_dir, 'Cronet.framework.dSYM'),
                       os.path.join(out_dir, build_dir, 'Cronet.framework.dSYM'))
   # Copy the version file
   shutil.copy2('chrome/VERSION', out_dir)
   # Copy the headers
   shutil.copytree(os.path.join(out_dir, build_dirs[0],
                                'Cronet.framework', 'Headers'),
                   os.path.join(out_dir, 'Headers'))
 
 
+def package_ios_framework_using_gn(out_dir='out/Framework', extra_options=''):
+  print 'Building Cronet Dynamic Framework using gn...'
+
+  # Package all builds in the output directory
+  os.makedirs(out_dir)
+  build_dir = ''
+  for (build_config, is_debug) in [('Debug', 'true'),
+                                   ('Release', 'false')]:
+    for (target_device, target_cpus) in [('simulator', ['x86', 'x64']),
+                                         ('os', ['arm', 'arm64'])]:
+      build_dirs = []
+      # Build every architecture separately until gn supports fat builds.
+      for target_cpu in target_cpus:
+        build_dir = 'out/cronet_%s_%s' % (build_config, target_cpu)
+        build_dirs.append(build_dir)
+        gn_args = 'target_os="ios" enable_websockets=false ' \
+                  'disable_file_support=true disable_ftp_support=true ' \
+                  'use_platform_icu_alternatives=true ' \
+                  'disable_brotli_filter=true ' \
+                  'target_cpu="%s" is_debug=%s' % (target_cpu, is_debug)
+
+        print 'Generating Ninja ' + gn_args
+        gn_result = run('gn gen %s --args=\'%s\'' % (build_dir, gn_args))
+        if gn_result != 0:
+          return gn_result
+
+        print 'Building ' + build_dir
+        build_result = run('ninja -C %s cronet_package' % build_dir,
+                           extra_options)
+        if build_result != 0:
+          return build_result
+
+      # Copy first framework.
+      target_dir = '%s-iphone%s' % (build_config, target_device)
+      shutil.copytree(os.path.join(build_dirs[0], 'Cronet.framework'),
+                      os.path.join(out_dir, target_dir, 'Cronet.framework'))
+      # Lipo first and second cpu.
+      lipo_result = run('lipo -create %s %s -output %s' %
+           (os.path.join(build_dirs[0], 'Cronet.framework/Cronet'),
+            os.path.join(build_dirs[1], 'Cronet.framework/Cronet'),
+            os.path.join(out_dir, target_dir, 'Cronet.framework/Cronet')))
+      if lipo_result != 0:
+        return lipo_result
+      # Extract and strip symbols from release binaries.
+      if 'Release' in build_config:
+        run('dsymutil -o=%s -minimize %s' %
+            (os.path.join(out_dir, target_dir, 'Cronet.framework.dSYM'),
+             os.path.join(out_dir, target_dir, 'Cronet.framework/Cronet')))
+        run('strip -x %s' %
+             os.path.join(out_dir, target_dir, 'Cronet.framework/Cronet'))
+
+  # Copy common files from last built package.
+  package_dir = os.path.join(build_dir, 'cronet')
+  shutil.copy2(os.path.join(package_dir, 'AUTHORS'), out_dir)
+  shutil.copy2(os.path.join(package_dir, 'LICENSE'), out_dir)
+  shutil.copy2(os.path.join(package_dir, 'VERSION'), out_dir)
+  # Copy the headers
+  shutil.copytree(os.path.join(build_dir,
+                               'Cronet.framework', 'Headers'),
+                  os.path.join(out_dir, 'Headers'))
+  print 'Cronet dynamic framework is packaged into %s' % out_dir
+
+
 def main():
   parser = argparse.ArgumentParser()
   parser.add_argument('out_dir', nargs=1, help='path to output directory')
-  parser.add_argument('-g', '--skip_gyp', action='store_true',
-                      help='skip gyp')
+  parser.add_argument('-g', '--gn', action='store_true',
+                      help='build using gn')
   parser.add_argument('-d', '--debug', action='store_true',
                       help='use release configuration')
   parser.add_argument('-r', '--release', action='store_true',
                       help='use release configuration')
   parser.add_argument('--framework', action='store_true',
                       help='build Cronet dynamic framework')
 
   options, extra_options_list = parser.parse_known_args()
   print options
   print extra_options_list
 
   out_dir = options.out_dir[0]
 
   # Make sure that the output directory does not exist
   if os.path.exists(out_dir):
     print >>sys.stderr, 'The output directory already exists: ' + out_dir
     return 1
 
   gyp_defines = 'GYP_DEFINES="OS=ios enable_websockets=0 '+ \
       'disable_file_support=1 disable_ftp_support=1 '+ \
       'enable_errorprone=1 use_platform_icu_alternatives=1 ' + \
       'disable_brotli_filter=1 chromium_ios_signing=0 ' + \
       'target_subarch=both"'
-  if not options.skip_gyp:
+  if not options.gn:
     run (gyp_defines + ' gclient runhooks')
 
   if options.framework:
     return package_ios_framework(out_dir, extra_options_list)
 
+  if options.gn:
+    return package_ios_framework_using_gn(out_dir, extra_options_list)
+
   return package_ios(out_dir, "out/Release", "opt") or \
          package_ios(out_dir, "out/Debug", "dbg")
 
 
 if __name__ == '__main__':
   sys.exit(main())