From dc9f24cd5b5cd9ae3e0aa86e661fc0cf30ac63ef Mon Sep 17 00:00:00 2001
From: Melody Horn <melody@boringcactus.com>
Date: Thu, 15 Apr 2021 00:19:09 -0600
Subject: ignore missing targets if they're phony

shout out to the gnu make docs for never mentioning that this works this way
---
 src/makefile/mod.rs | 48 +++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 47 insertions(+), 1 deletion(-)

diff --git a/src/makefile/mod.rs b/src/makefile/mod.rs
index 981636b..764328f 100644
--- a/src/makefile/mod.rs
+++ b/src/makefile/mod.rs
@@ -326,7 +326,17 @@ impl<'a> Makefile<'a> {
     }
 
     pub fn update_target(&self, name: &str) -> Result<()> {
-        self.get_target(name)?.borrow().update(self)
+        let target = self.get_target(name);
+        match target {
+            // TODO make this less janky
+            Err(err)
+                if err.to_string().contains(" not found!")
+                    && self.special_target_has_prereq(".PHONY", name) =>
+            {
+                Ok(())
+            }
+            _ => target?.borrow().update(self),
+        }
     }
 
     fn expand_macros(&self, text: &TokenString, target: Option<&Target>) -> Result<String> {
@@ -535,4 +545,40 @@ mod test {
         assert_eq!(target.borrow().stem, Some("test".to_owned()));
         Ok(())
     }
+
+    #[cfg(feature = "full")]
+    #[test]
+    fn missing_phony_targets_ignored() -> R {
+        let args = Args::empty();
+        let target = Target {
+            name: "all".to_owned(),
+            prerequisites: vec!["missing".to_owned()],
+            commands: vec![],
+            stem: None,
+            already_updated: Cell::new(false),
+        };
+        let phony = Target {
+            name: ".PHONY".to_string(),
+            prerequisites: vec!["missing".to_owned()],
+            commands: vec![],
+            stem: None,
+            already_updated: Cell::new(false),
+        };
+
+        let targets = DynamicTargetSet::default();
+        targets.put(target);
+        targets.put(phony);
+        let file = Makefile {
+            inference_rules: vec![],
+            builtin_inference_rules: vec![],
+            macros: MacroSet::new(),
+            targets,
+            first_non_special_target: None,
+            args: &args,
+            already_inferred: Default::default(),
+        };
+
+        assert!(file.update_target("all").is_ok());
+        Ok(())
+    }
 }
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