Add some more implementation details

1 files changed, 7 insertions, 0 deletions

diff --git a/util.h b/util.h
new file mode 100644
index 0000000..7382cc1
--- /dev/null
+++ b/util.h
@@ -0,0 +1,7 @@
+#pragma once
+
+__attribute__((noreturn))
+__attribute__((format(printf, 1, 2)))
+void die(const char *fmt, ...);
+
+extern const char *progname;