diff --git a/util/led/debug.h b/util/led/debug.h
index 979e0cec8..da1e1e972 100644
--- a/util/led/debug.h
+++ b/util/led/debug.h
@@ -7,6 +7,7 @@
 #ifndef __DEBUG_H_INCLUDED__
 #define __DEBUG_H_INCLUDED__
 
+#include "error.h"
 
 #ifdef NDEBUG
 
@@ -15,13 +16,11 @@
 #else
 extern int DEB;
 
-#define debug(s, a1, a2, a3, a4)	(DEB && printf(s, a1, a2, a3, a4))
+#define debug(s, a1, a2, a3, a4)	(DEB && do_debug(s, a1, a2, a3, a4))
 
 #endif
 
 extern int Verbose;
 #define verbose(s, a1, a2, a3, a4)	(Verbose && do_verbose(s, a1, a2, a3, a4))
 
-extern void fatal(char* format, ...);
-
 #endif /* __DEBUG_H_INCLUDED__ */
diff --git a/util/led/error.c b/util/led/error.c
index 1d2be80b0..73125136a 100644
--- a/util/led/error.c
+++ b/util/led/error.c
@@ -60,6 +60,17 @@ void error(char *format, ...)
 	va_end(ap);
 }
 
+/* VARARGS1 */
+int do_debug(char *format, ...)
+{
+	/* printf() and return 1 */
+	va_list ap;
+	va_start(ap, format);
+	vprintf(format, ap);
+	va_end(ap);
+	return 1;
+}
+
 /* VARARGS1 */
 int do_verbose(char *format, ...)
 {
diff --git a/util/led/error.h b/util/led/error.h
index 8071a9f06..637b1c42c 100644
--- a/util/led/error.h
+++ b/util/led/error.h
@@ -13,6 +13,7 @@ void stop(void);
 void fatal(char *format, ...);
 void warning(char *format, ...);
 void error(char *format, ...);
+int do_debug(char *format, ...);
 int do_verbose(char *format, ...);
 
 
diff --git a/util/led/main.c b/util/led/main.c
index 4fcb42900..1ba5d7fac 100644
--- a/util/led/main.c
+++ b/util/led/main.c
@@ -580,7 +580,7 @@ void addbase(struct outname *name)
 		address((name->on_type & S_EXT) ? ALLOGCHR : ALLOLCHR,
 			(ind_t)name->on_foff
 		),
-		name->on_type, name->on_valu, 0
+		name->on_type, (unsigned long)name->on_valu, 0
 	);
 }
 
diff --git a/util/led/relocate.c b/util/led/relocate.c
index 9f7df829d..a167645d0 100644
--- a/util/led/relocate.c
+++ b/util/led/relocate.c
@@ -416,7 +416,8 @@ static void put_mips_valu(char* addr, uint32_t value)
 
 	/* The two bottom zero bits are implicit. */
 	if (value & 3)
-		fatal("invalid MIPS relocation value 0x%x", value);
+		fatal("invalid MIPS relocation value 0x%lx",
+		      (unsigned long)value);
 	value >>= 2;
 
 	switch (opcode >> 26)
@@ -560,7 +561,8 @@ void relocate(struct outhead *head, char* emit, struct outname names[], struct o
 	 * Pick up previous value at location to be relocated.
 	 */
 	valu = getvalu(emit + (relo->or_addr - off), relo->or_type);
-	debug("read relocation from 0x%08x type 0x%x value 0x%08x symbol %d\n", realaddress, relo->or_type, valu, relo->or_nami);
+	debug("read relocation from 0x%08lx type 0x%x value 0x%08lx symbol %u\n",
+	      (unsigned long)realaddress, relo->or_type, valu, relo->or_nami);
 
 	/*
 	 * Or_nami is an index in the name table of the considered module.
@@ -595,7 +597,8 @@ void relocate(struct outhead *head, char* emit, struct outname names[], struct o
 	/*
 	 * Now put the value back.
 	 */
-	debug("written fixed up relocation to 0x%08x type 0x%x value 0x%08x\n", realaddress, relo->or_type, valu, 0);
+	debug("written fixed up relocation to 0x%08lx type 0x%x value 0x%08lx\n",
+	      (unsigned long)realaddress, relo->or_type, valu, 0);
 	putvalu(valu, emit + (relo->or_addr - off), relo->or_type);
 
 	/*
diff --git a/util/led/sym.c b/util/led/sym.c
index e946a5a17..8320a5a4c 100644
--- a/util/led/sym.c
+++ b/util/led/sym.c
@@ -19,6 +19,7 @@ static char rcsid[] = "$Id$";
 #include "error.h"
 #include "memory.h"
 #include "debug.h"
+#include "save.h"
 #include "sym.h"
 
 /*
@@ -66,7 +67,8 @@ struct outname *searchname(char *string, int hashval)
 	register struct symbol	*sym;
 
 	symindex = hashtable[hashval];
-	debug("looking for %s %d %ld:", string, hashval, hashtable[hashval], 0);
+	debug("looking for %s %d %z:", string, hashval,
+	      (size_t)hashtable[hashval], 0);
 	while (symindex != BADOFF) {
 		sym = (struct symbol *)address(ALLOSYMB, symindex);
 		name = (struct outname *)address(ALLOGLOB, sym->sy_name);
@@ -76,7 +78,8 @@ struct outname *searchname(char *string, int hashval)
 		while (*rcp == *namestring++)
 			if (*rcp++ == '\0') {
 				debug("found %x, %x, %lx\n",
-					name->on_type, name->on_desc, name->on_valu, 0);
+				      name->on_type, name->on_desc,
+				      (unsigned long)name->on_valu, 0);
 				return name;
 			}
 		symindex = sym->sy_next;
@@ -99,12 +102,11 @@ void entername(struct outname* name, int hashval)
 	ind_t		namindex;
 	register struct symbol	*sym;
 	struct outname	*newname;
-	extern ind_t	savechar();
 
 	debug("entername %s %d %x %x", modulptr((ind_t)name->on_foff), hashval, name->on_type, name->on_desc);
 	savindex = savechar(ALLOGCHR, (ind_t)name->on_foff);
 	symindex = hard_alloc(ALLOSYMB, (long)sizeof(struct symbol));
-	debug("; %ld\n", symindex, 0, 0, 0);
+	debug("; %z\n", (size_t)symindex, 0, 0, 0);
 	namindex = hard_alloc(ALLOGLOB, (long)sizeof(struct outname));
 	if (savindex == BADOFF || symindex == BADOFF || namindex == BADOFF)
 		fatal("symbol table overflow");
@@ -137,7 +139,7 @@ int hash(register char* p)
 	register unsigned short	h = 0;
 	register int		c;
 
-	while (c = *p++) {
+	while ((c = *p++) != '\0') {
 		h <<= 2;
 		h += c;
 	}