diff options
Diffstat (limited to 'src/makefile/macro.rs')
| -rw-r--r-- | src/makefile/macro.rs | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/makefile/macro.rs b/src/makefile/macro.rs index 4d58e07..f62d21d 100644 --- a/src/makefile/macro.rs +++ b/src/makefile/macro.rs @@ -113,7 +113,10 @@ impl<'parent, 'lookup> Set<'parent, 'lookup> { self.lookup_internal(name)? } else { self.get(name).map_or_else( - || Ok(String::new()), + || { + log::warn!("undefined macro {}", name); + Ok(String::new()) + }, |(_, macro_value)| self.expand(macro_value), )? }; |