fix(msvs): correctly rename object files for absolute paths (#71)

Author: targos

CHANGELOG.md

@@ -6,6 +6,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ## [Unreleased]
 
+### Fixed
+- Correctly rename object files for absolute paths in MSVS generator.
+
 ## [0.6.0] - 2020-10-13
 
 ### Added

pylib/gyp/generator/msvs.py

@@ -3618,9 +3618,11 @@ def _AddSources2(
                     # Always add an <ObjectFileName> value to support duplicate
                     # source file basenames.
                     file_name = os.path.splitext(source)[0] + ".obj"
-                    if (file_name.startswith("..\\")):
+                    if os.path.isabs(file_name):
+                        file_name = os.path.splitdrive(file_name)[1]
+                    elif file_name.startswith("..\\"):
                         file_name = re.sub(r"^(\.\.\\)+", "", file_name)
-                    elif (file_name.startswith("$(")):
+                    elif file_name.startswith("$("):
                         file_name = re.sub(r"^\$\([^)]+\)\\", "", file_name)
                     detail.append(["ObjectFileName", "$(IntDir)\\" + file_name])
                 grouped_sources[group].append([element, {"Include": source}] + detail)