xcode_emulation: work in the absence of xcodebuild

pylib/gyp/xcode_emulation.py

 # Copyright (c) 2012 Google Inc. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """
 This module contains classes that help to emulate xcodebuild behavior on top of
 other build systems, such as make and ninja.
 """
 
 import copy
@@ skipping 262 matching lines @@
 
   def _GetStdout(self, cmdlist):
     job = subprocess.Popen(cmdlist, stdout=subprocess.PIPE)
     out = job.communicate()[0]
     if job.returncode != 0:
       sys.stderr.write(out + '\n')
       raise GypError('Error %d running %s' % (job.returncode, cmdlist[0]))
     return out.rstrip('\n')
 
   def _GetSdkVersionInfoItem(self, sdk, infoitem):
-    return self._GetStdout(['xcodebuild', '-version', '-sdk', sdk, infoitem])
+    # xcodebuild requires Xcode and can't run on Command Line Tools-only
+    # systems from 10.7 onward.
+    # Since the CLT has no SDK paths anyway, returning None is the
+    # most sensible route and should still do the right thing.
+    try:
+      return self._GetStdout(['xcodebuild', '-version', '-sdk', sdk, infoitem])
+    except:
+      pass
 
   def _SdkRoot(self, configname):
     if configname is None:
       configname = self.configname
     return self.GetPerConfigSetting('SDKROOT', configname, default='')
 
   def _SdkPath(self, configname=None):
     sdk_root = self._SdkRoot(configname)
     if sdk_root.startswith('/'):
       return sdk_root
@@ skipping 108 matching lines @@
       if self._Test('GCC_ENABLE_SUPPLEMENTAL_SSE3_INSTRUCTIONS', 'YES',
                     default='NO'):
         cflags.append('-mssse3')  # Note 3rd 's'.
       if self._Test('GCC_ENABLE_SSE41_EXTENSIONS', 'YES', default='NO'):
         cflags.append('-msse4.1')
       if self._Test('GCC_ENABLE_SSE42_EXTENSIONS', 'YES', default='NO'):
         cflags.append('-msse4.2')
 
     cflags += self._Settings().get('WARNING_CFLAGS', [])
 
-    config = self.spec['configurations'][self.configname]
-    framework_dirs = config.get('mac_framework_dirs', [])
-    for directory in framework_dirs:
-      cflags.append('-F' + directory.replace('$(SDKROOT)', sdk_root))
+    if 'SDKROOT' in self._Settings():
+      config = self.spec['configurations'][self.configname]
+      framework_dirs = config.get('mac_framework_dirs', [])
+      for directory in framework_dirs:
+        cflags.append('-F' + directory.replace('$(SDKROOT)', sdk_root))
 
     self.configname = None
     return cflags
 
   def GetCflagsC(self, configname):
     """Returns flags that need to be added to .c, and .m compilations."""
     self.configname = configname
     cflags_c = []
     if self._Settings().get('GCC_C_LANGUAGE_STANDARD', '') == 'ansi':
       cflags_c.append('-ansi')
@@ skipping 226 matching lines @@
     # Xcode adds the product directory by default.
     ldflags.append('-L' + product_dir)
 
     install_name = self.GetInstallName()
     if install_name and self.spec['type'] != 'loadable_module':
       ldflags.append('-install_name ' + install_name.replace(' ', r'\ '))
 
     for rpath in self._Settings().get('LD_RUNPATH_SEARCH_PATHS', []):
       ldflags.append('-Wl,-rpath,' + rpath)
 
-    config = self.spec['configurations'][self.configname]
-    framework_dirs = config.get('mac_framework_dirs', [])
-    for directory in framework_dirs:
-      ldflags.append('-F' + directory.replace('$(SDKROOT)', self._SdkPath()))
+    if 'SDKROOT' in self._Settings():
+      config = self.spec['configurations'][self.configname]
+      framework_dirs = config.get('mac_framework_dirs', [])
+      for directory in framework_dirs:
+        ldflags.append('-F' + directory.replace('$(SDKROOT)', self._SdkPath()))
 
     self.configname = None
     return ldflags
 
   def GetLibtoolflags(self, configname):
     """Returns flags that need to be passed to the static linker.
 
     Args:
         configname: The name of the configuration to get ld flags for.
     """
@@ skipping 160 matching lines @@
 
   def _AdjustLibrary(self, library, config_name=None):
     if library.endswith('.framework'):
       l = '-framework ' + os.path.splitext(os.path.basename(library))[0]
     else:
       m = self.library_re.match(library)
       if m:
         l = '-l' + m.group(1)
       else:
         l = library
-    return l.replace('$(SDKROOT)', self._SdkPath(config_name))
+    if self._SdkPath():
+      return l.replace('$(SDKROOT)', self._SdkPath(config_name))
+    else:
+      return l
 
   def AdjustLibraries(self, libraries, config_name=None):
     """Transforms entries like 'Cocoa.framework' in libraries into entries like
     '-framework Cocoa', 'libcrypto.dylib' into '-lcrypto', etc.
     """
     libraries = [self._AdjustLibrary(library, config_name)
                  for library in libraries]
     return libraries
 
   def _BuildMachineOSBuild(self):
@@ skipping 512 matching lines @@
         new_config_dict['xcode_settings']['SDKROOT'] = 'iphoneos'
       target_dict['configurations'][new_config_name] = new_config_dict
   return targets
 
 def CloneConfigurationForDeviceAndEmulator(target_dicts):
   """If |target_dicts| contains any iOS targets, automatically create -iphoneos
   targets for iOS device builds."""
   if _HasIOSTarget(target_dicts):
     return _AddIOSDeviceConfigurations(target_dicts)
   return target_dicts