---- xulrunner-18.0/mozilla/media/webrtc/trunk/tools/gyp/pylib/gyp/generator/mozmake.py.orig 2013-01-05 00:44:41.000000000 +0100
-+++ xulrunner-18.0/mozilla/media/webrtc/trunk/tools/gyp/pylib/gyp/generator/mozmake.py 2013-01-13 20:13:40.033894757 +0100
-@@ -114,6 +114,12 @@
- if dir and not os.path.exists(dir):
- os.makedirs(dir)
-
-+def append_relative(base, rel):
-+ if rel == '':
-+ return base
-+ else:
-+ return base + '/' + rel
-+
- def GetFlavor(params):
- """Returns |params.flavor| if it's set, the system's default flavor else."""
- flavors = {
-@@ -142,9 +148,9 @@
-
- def WriteMakefile(filename, data, build_file, depth, topsrcdir, srcdir, relative_path, extra_data=None):
- if not os.path.isabs(topsrcdir):
-- topsrcdir = depth + "/" + topsrcdir
-+ topsrcdir = append_relative(depth, topsrcdir)
- if not os.path.isabs(srcdir):
-- srcdir = depth + "/" + srcdir
-+ srcdir = append_relative(depth, srcdir)
- #TODO: should compare with the existing file and not overwrite it if the
- # contents are the same!
- ensure_directory_exists(filename)
-@@ -261,7 +267,7 @@
- qualified_target)
- build_file = os.path.abspath(build_file)
- rel_path, output_file = self.CalculateMakefilePath(build_file, target)
-- subdepth = self.depth + "/" + getdepth(rel_path)
-+ subdepth = append_relative(self.depth, getdepth(rel_path))
- if self.WriteTargetMakefile(output_file, rel_path, qualified_target, spec, build_file, subdepth):
- # If WriteTargetMakefile returns True, then this is a useful target
- dirs.append(rel_path)
-@@ -399,7 +405,7 @@
- # The relative path from objdir to gyp_file_dir
- srcdir = gyp.common.RelativePath(gyp_file_dir, objdir)
- # The absolute path to the source dir
-- abs_srcdir = topsrcdir + "/" + relative_srcdir
-+ abs_srcdir = append_relative(topsrcdir, relative_srcdir)
- # The path to get up to the root of the objdir from the output dir.
- depth = getdepth(relative_srcdir)
- # The output directory.
-@@ -408,9 +414,9 @@
- makefile_path = os.path.join(output_dir, "Makefile")
-
- def topsrcdir_path(path):
-- return "$(topsrcdir)/" + swapslashes(gyp.common.RelativePath(path, topsrcdir))
-+ return append_relative("$(topsrcdir)", swapslashes(gyp.common.RelativePath(path, topsrcdir)))
- def objdir_path(path):
-- return "$(DEPTH)/" + swapslashes(gyp.common.RelativePath(path, objdir))
-+ return append_relative("$(DEPTH)", swapslashes(gyp.common.RelativePath(path, objdir)))
-
- # Find the list of targets that derive from the gyp file(s) being built.
- needed_targets = set()