diff --git a/include/bin.h b/include/bin.h
new file mode 100644
index 0000000..6b9f2bd
--- /dev/null
+++ b/include/bin.h
@@ -0,0 +1,13 @@
+/*
+#pragma	lib	"libbin.a"
+#pragma	src	"/sys/src/libbin"
+*/
+
+#ifndef _HAVE_BIN
+typedef struct Bin		Bin;
+#define _HAVE_BIN
+#endif
+
+void	*binalloc(Bin **, ulong size, int zero);
+void	*bingrow(Bin **, void *op, ulong osize, ulong size, int zero);
+void	binfree(Bin **);