set `MAKEFILE_LIST`

1 files changed, 19 insertions, 1 deletions

diff --git a/src/makefile/input.rs b/src/makefile/input.rs
index d6cffdf..d90378d 100644
--- a/src/makefile/input.rs
+++ b/src/makefile/input.rs
@@ -158,9 +158,27 @@ pub struct MakefileReader<'a, 'parent, R: BufRead> {
 impl<'a, 'parent> MakefileReader<'a, 'parent, BufReader<File>> {
     pub fn read_file(
         args: &'a Args,
-        macros: MacroSet<'parent, 'static>,
+        mut macros: MacroSet<'parent, 'static>,
         path: impl AsRef<Path>,
     ) -> Result<Self> {
+        #[cfg(feature = "full")]
+        if let Some((_, mut old_makefile_list)) = macros.pop("MAKEFILE_LIST") {
+            old_makefile_list.extend(TokenString::text(format!(
+                " {}",
+                path.as_ref().to_string_lossy()
+            )));
+            macros.set(
+                "MAKEFILE_LIST".to_owned(),
+                MacroSource::Builtin,
+                old_makefile_list,
+            );
+        } else {
+            macros.set(
+                "MAKEFILE_LIST".to_owned(),
+                MacroSource::Builtin,
+                TokenString::text(path.as_ref().to_string_lossy()),
+            );
+        }
         let file = File::open(path);
         // TODO handle errors
         let file = file.context("couldn't open makefile!")?;