Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/llvm/utils/llvm-build/llvmbuild/util.py

@@ -0,0 +1,13 @@
+import os
+import sys
+
+def _write_message(kind, message):
+    program = os.path.basename(sys.argv[0])
+    sys.stderr.write('%s: %s: %s\n' % (program, kind, message))
+
+note = lambda message: _write_message('note', message)
+warning = lambda message: _write_message('warning', message)
+error = lambda message: _write_message('error', message)
+fatal = lambda message: (_write_message('fatal error', message), sys.exit(1))
+
+__all__ = ['note', 'warning', 'error', 'fatal']