Add the #goo to allow use in C++.
Silence a few more warnings.
Strip down the mkfiles more.
Fix bug in X11 mouse handling, note groups.
diff --git a/include/plumb.h b/include/plumb.h
index e0b1132..4a31546 100644
--- a/include/plumb.h
+++ b/include/plumb.h
@@ -1,3 +1,8 @@
+#ifndef _LIBPLUMB_H_
+#define _LIBPLUMB_H_ 1
+#if defined(__cplusplus)
+extern "C" {
+#endif
/*
#pragma lib "libplumb.a"
#pragma src "/sys/src/libplumb"
@@ -48,3 +53,8 @@
char* plumblookup(Plumbattr*, char*);
int plumbopen(char*, int);
int eplumb(int, char*);
+
+#if defined(__cplusplus)
+}
+#endif
+#endif
