look for `GNUmakefile` if not in POSIX mode

1 files changed, 13 insertions, 18 deletions

diff --git a/src/main.rs b/src/main.rs
index c5240fc..27e19fe 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -17,7 +17,6 @@
 )]
 #![allow(clippy::missing_docs_in_private_items)]
 
-use std::env::current_dir;
 use std::fs::metadata;
 use std::io::stdin;
 use std::path::PathBuf;
@@ -30,29 +29,25 @@ mod makefile;
 use args::Args;
 use makefile::{Makefile, MakefileReader};
 
+const DEFAULT_PATHS: &[&str] = &[
+    #[cfg(feature = "full")]
+    "GNUmakefile",
+    "makefile",
+    "Makefile",
+];
+
 fn main() -> Result<()> {
     jane_eyre::install()?;
 
     let mut args = Args::from_env_and_args();
     // If no makefile is specified, try some options.
     if args.makefile.is_empty() {
-        args.makefile = vec![if metadata("./makefile").is_ok() {
-            "./makefile".into()
-        } else if metadata("./Makefile").is_ok() {
-            "./Makefile".into()
-        } else {
-            bail!(
-                "no makefile specified and neither {} nor {} was found.",
-                current_dir().map_or_else(
-                    |_| "./makefile".to_owned(),
-                    |path| path.join("makefile").display().to_string()
-                ),
-                current_dir().map_or_else(
-                    |_| "./Makefile".to_owned(),
-                    |path| path.join("Makefile").display().to_string()
-                ),
-            );
-        }];
+        let default_makefile = DEFAULT_PATHS.iter().find(|name| metadata(name).is_ok());
+        let default_makefile = match default_makefile {
+            Some(x) => x,
+            None => bail!("no makefile found (tried {})", DEFAULT_PATHS.join(", ")),
+        };
+        args.makefile = vec![default_makefile.into()];
     }
     // Read in the makefile(s) specified.
     // TODO dump command-line args into MAKEFLAGS