<tools/gyp> Prevent a python IOError on Windows

Task-number: QTBUG-46938
Change-Id: I09f518636d649c5149bdb0cd72881916639509db
Reviewed-by: Kai Koehne <[email protected]>
Reviewed-by: Joerg Bornemann <[email protected]>

Author: stampho

chromium/tools/gyp/pylib/gyp/generator/ninja.py

@@ -250,6 +250,12 @@ def __init__(self, hash_for_rules, target_outputs, base_dir, build_dir,
     base_to_top = gyp.common.InvertRelativePath(base_dir, toplevel_dir)
     self.base_to_build = os.path.join(base_to_top, build_dir)
 
+    # Override relative paths and use absolute paths instead.
+    # It is necessary to prevent python IOError on Windows due to long
+    # relative paths while building QtWebEngine.
+    self.build_to_base = os.path.join(toplevel_dir, base_dir)
+    self.base_to_build = os.path.normpath(toplevel_build)
+
   def ExpandSpecial(self, path, product_dir=None):
     """Expand specials like $!PRODUCT_DIR in |path|.
 

chromium/tools/gyp/pylib/gyp/msvs_emulation.py

@@ -622,6 +622,7 @@ def GetLdflags(self, config, gyp_to_build_path, expand_special,
       ldflags.append('/NXCOMPAT')
 
     have_def_file = filter(lambda x: x.startswith('/DEF:'), ldflags)
+    build_dir = os.path.normpath(build_dir)
     manifest_flags, intermediate_manifest, manifest_files = \
         self._GetLdManifestFlags(config, manifest_base_name, gyp_to_build_path,
                                  is_executable and not have_def_file, build_dir)