Print response file contents

Author: tannewt

ports/zephyr-cp/cptools/cpbuild.py

@@ -137,6 +137,7 @@ async def run_command(
     If None, commands that are too long will fail.
     """
     paths = []
+    responsefile_contents = None
     if isinstance(command, list):
         for i, part in enumerate(command):
             if isinstance(part, pathlib.Path):
@@ -149,8 +150,9 @@ async def run_command(
 
         # When on windows, use a responsefile if the command string is >= 8192
         if os.name == "nt" and len(command_string) >= 8192:
-            responsefile.write_text("\n".join(command[1:]))
-            command_string = f"{command[0]} @{responsefile}"
+            responsefile_contents = "\n".join(command[1:])
+            responsefile.write_text(responsefile_contents)
+            command_string = f"{command[0]} -v @{responsefile}"
     else:
         command_string = command
 
@@ -269,6 +271,8 @@ async def run_command(
         if command_hash in LAST_BUILD_TIMES:
             del LAST_BUILD_TIMES[command_hash]
         logger.error(command_string)
+        if responsefile_contents:
+            logger.error(f"Response file contents:\n{responsefile_contents}")
         logger.error(f"Return code: {process.returncode}")
         if stdout:
             logger.info(stdout.decode("utf-8").strip())