Hash intermediate file name to avoid ENAMETOOLONG

pylib/gyp/generator/make.py

 # Copyright (c) 2013 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.
 
 # Notes:
 #
 # This is all roughly based on the Makefile system used by the Linux
 # kernel, but is a non-recursive make -- we put the entire dependency
 # graph in front of make and let it figure it out.
 #
@@ skipping 13 matching lines @@
 import os
 import re
 import sys
 import subprocess
 import gyp
 import gyp.common
 import gyp.xcode_emulation
 from gyp.common import GetEnvironFallback
 from gyp.common import GypError
 
+import hashlib
+
 generator_default_variables = {
   'EXECUTABLE_PREFIX': '',
   'EXECUTABLE_SUFFIX': '',
   'STATIC_LIB_PREFIX': 'lib',
   'SHARED_LIB_PREFIX': 'lib',
   'STATIC_LIB_SUFFIX': '.a',
   'INTERMEDIATE_DIR': '$(obj).$(TOOLSET)/$(TARGET)/geni',
   'SHARED_INTERMEDIATE_DIR': '$(obj)/gen',
   'PRODUCT_DIR': '$(builddir)',
   'RULE_INPUT_ROOT': '%(INPUT_ROOT)s',  # This gets expanded by Python.
@@ skipping 1692 matching lines @@
       self.WriteLn('%s: %s%s' % (outputs[0], ' '.join(inputs), force_append))
     else:
       # Regular rule, more than one output: Multiple outputs are tricky in
       # make. We will write three rules:
       # - All outputs depend on an intermediate file.
       # - Make .INTERMEDIATE depend on the intermediate.
       # - The intermediate file depends on the inputs and executes the
       #   actual command.
       # - The intermediate recipe will 'touch' the intermediate file.
       # - The multi-output rule will have an do-nothing recipe.
-      intermediate = "%s.intermediate" % (command if command else self.target)
+
+      # Hash the target name to avoid generating overlong filenames.
+      cmddigest = hashlib.sha1(command if command else self.target).hexdigest()
+      intermediate = "%s.intermediate" % (cmddigest)

[Nico, 2016/10/13 13:25:11]

(nit: no need for the parens here)

       self.WriteLn('%s: %s' % (' '.join(outputs), intermediate))
       self.WriteLn('\t%s' % '@:');
       self.WriteLn('%s: %s' % ('.INTERMEDIATE', intermediate))
       self.WriteLn('%s: %s%s' %
                    (intermediate, ' '.join(inputs), force_append))
       actions.insert(0, '$(call do_cmd,touch)')
 
     if actions:
       for action in actions:
         self.WriteLn('\t%s' % action)
@@ skipping 452 matching lines @@
     root_makefile.write("endif\n")
   root_makefile.write('\n')
 
   if (not generator_flags.get('standalone')
       and generator_flags.get('auto_regeneration', True)):
     WriteAutoRegenerationRule(params, root_makefile, makefile_name, build_files)
 
   root_makefile.write(SHARED_FOOTER)
 
   root_makefile.close()