Fix printing to not lose error prints

Author: juj

tools/emscripten.py

@@ -200,18 +200,24 @@ def compile_javascript(symbols_only=False):
  if ret.stderr:
  undefs = building.find_undef_symbols(settings.LINKER_INPUTS)
 
+ errs = []
  for line in ret.stderr.split('\n'):
  top_level_undefined = re.match('error: undefined symbol: (.*) \\(referenced by top-level compiled C/C\\+\\+ code\\)', line)
  if top_level_undefined:
  undef = top_level_undefined[1]
+ logger.error(f'"{undef}" is undefined, searching')
 
  refs = []
  for filename, nm in undefs.items():
+ logger.error(f'searching file {filename}, got {nm}')
  if undef in list(nm):
  refs += [filename]
 
  refs = ','.join(refs) if len(refs) > 0 else 'referenced by top-level compiled C/C++ code'
- logger.error(f'undefined symbol: {undef} (referenced by {refs})')
+ errs += [f'undefined symbol: {undef} (referenced by {refs})']
+ else:
+ errs += [line]
+ logger.error('\n'.join(errs))
  if ret.returncode:
  sys.exit(ret.returncode)
  if symbols_only: