ci: generate debug symbols on Linux (#18676)

script/add-debug-link.py

@@ -0,0 +1,66 @@
+#!/usr/bin/env python
+from __future__ import print_function
+import argparse
+import os
+import sys
+
+from lib.config import LINUX_BINARIES, PLATFORM
+from lib.util import execute, get_objcopy_path, get_out_dir
+
+def add_debug_link_into_binaries(directory, target_cpu, debug_dir):
+  for binary in LINUX_BINARIES:
+    binary_path = os.path.join(directory, binary)
+    if os.path.isfile(binary_path):
+      add_debug_link_into_binary(binary_path, target_cpu, debug_dir)
+
+def add_debug_link_into_binary(binary_path, target_cpu, debug_dir):
+  try:
+    objcopy = get_objcopy_path(target_cpu)
+  except:
+    if PLATFORM == 'linux' and (target_cpu == 'x86' or target_cpu == 'arm' or
+       target_cpu == 'arm64'):
+      # Skip because no objcopy binary on the given target.
+      return
+    raise
+  debug_name = get_debug_name(binary_path)
+  # Make sure the path to the binary is not relative because of cwd param.
+  real_binary_path = os.path.realpath(binary_path)
+  cmd = [objcopy, '--add-gnu-debuglink=' + debug_name, real_binary_path]
+  execute(cmd, cwd=debug_dir)
+
+def get_debug_name(binary_path):
+  return os.path.basename(binary_path) + '.debug'
+
+def main():
+  args = parse_args()
+  if args.file:
+    add_debug_link_into_binary(args.file, args.target_cpu, args.debug_dir)
+  else:
+    add_debug_link_into_binaries(args.directory, args.target_cpu,
+                                 args.debug_dir)
+
+def parse_args():
+  parser = argparse.ArgumentParser(description='Add debug link to binaries')
+  parser.add_argument('-d', '--directory',
+                      help='Path to the dir that contains files to add links',
+                      default=get_out_dir(),
+                      required=False)
+  parser.add_argument('-f', '--file',
+                      help='Path to a specific file to add debug link',
+                      required=False)
+  parser.add_argument('-s', '--debug-dir',
+                      help='Path to the dir that contain the debugs',
+                      default=None,
+                      required=True)
+  parser.add_argument('-v', '--verbose',
+                      action='store_true',
+                      help='Prints the output of the subprocesses')
+  parser.add_argument('--target-cpu',
+                      default='',
+                      required=False,
+                      help='Target cpu of binaries to add debug link')
+
+  return parser.parse_args()
+
+if __name__ == '__main__':
+  sys.exit(main())