Index: usr.sbin/config/config.h
===================================================================
--- usr.sbin/config/config.h
+++ usr.sbin/config/config.h
@@ -82,6 +82,7 @@
 #define NO_OBJ		2
 #define BEFORE_DEPEND	4
 #define NOWERROR	16
+#define NO_CTFCONVERT	32
 
 struct device {
 	int	d_done;			/* processed */
Index: usr.sbin/config/configvers.h
===================================================================
--- usr.sbin/config/configvers.h
+++ usr.sbin/config/configvers.h
@@ -49,7 +49,7 @@
  *
  * $FreeBSD$
  */
-#define	CONFIGVERS	600017
+#define	CONFIGVERS	600018
 #define	MAJOR_VERS(x)	((x) / 100000)
 
 /* Last config(8) version to require envmode/hintmode */
Index: usr.sbin/config/mkmakefile.c
===================================================================
--- usr.sbin/config/mkmakefile.c
+++ usr.sbin/config/mkmakefile.c
@@ -397,7 +397,7 @@
 	char *wd, *this, *compilewith, *depends, *clean, *warning;
 	const char *objprefix;
 	int compile, match, nreqs, std, filetype, not,
-	    imp_rule, no_obj, before_depend, nowerror;
+	    imp_rule, no_ctfconvert, no_obj, before_depend, nowerror;
 
 	fp = fopen(fname, "r");
 	if (fp == NULL)
@@ -452,6 +452,7 @@
 	warning = 0;
 	std = 0;
 	imp_rule = 0;
+	no_ctfconvert = 0;
 	no_obj = 0;
 	before_depend = 0;
 	nowerror = 0;
@@ -479,6 +480,10 @@
 			nreqs = 0;
 			continue;
 		}
+		if (eq(wd, "no-ctfconvert")) {
+			no_ctfconvert++;
+			continue;
+		}
 		if (eq(wd, "no-obj")) {
 			no_obj++;
 			continue;
@@ -591,6 +596,8 @@
 			tp->f_srcprefix = "$S/";
 		if (imp_rule)
 			tp->f_flags |= NO_IMPLCT_RULE;
+		if (no_ctfconvert)
+			tp->f_flags |= NO_CTFCONVERT;
 		if (no_obj)
 			tp->f_flags |= NO_OBJ;
 		if (before_depend)
@@ -805,7 +812,7 @@
 		else
 			fprintf(f, "\t%s\n", compilewith);
 
-		if (!(ftp->f_flags & NO_OBJ))
+		if (!(ftp->f_flags & (NO_OBJ|NO_CTFCONVERT)))
 			fprintf(f, "\t${NORMAL_CTFCONVERT}\n\n");
 		else
 			fprintf(f, "\n");