4 files changed, 21 insertions, 15 deletions
diff --git a/sys/conf/kern.mk b/sys/conf/kern.mk
index 0f5cd66..7e23a80 100644
--- a/sys/conf/kern.mk
+++ b/sys/conf/kern.mk
@@ -108,3 +108,11 @@ CFLAGS+=	-restrict
 	${MACHINE_ARCH} != "arm" && ${MACHINE_ARCH} != "mips"
 CFLAGS+=	-fstack-protector
 .endif
+
+#
+# Enable CTF conversation on request.
+#
+.if defined(WITH_CTF)
+.undef NO_CTF
+.endif
+
diff --git a/sys/conf/kern.post.mk b/sys/conf/kern.post.mk
index f808c95..c5c9c34 100644
--- a/sys/conf/kern.post.mk
+++ b/sys/conf/kern.post.mk
@@ -19,6 +19,10 @@ MKMODULESENV+=	KERNBUILDDIR="${.CURDIR}" SYSDIR="${SYSDIR}"
 MKMODULESENV+=	CONF_CFLAGS="${CONF_CFLAGS}"
 .endif
 
+.if defined(WITH_CTF)
+MKMODULESENV+=	WITH_CTF="${WITH_CTF}"
+.endif
+
 .MAIN: all
 
 .for target in all clean cleandepend cleandir clobber depend install \
@@ -90,9 +94,7 @@ ${FULLKERNEL}: ${SYSTEM_DEP} vers.o
 	@rm -f ${.TARGET}
 	@echo linking ${.TARGET}
 	${SYSTEM_LD}
-.if defined(CTFMERGE)
-	${SYSTEM_CTFMERGE}
-.endif
+	@${SYSTEM_CTFMERGE}
 .if !defined(DEBUG)
 	${OBJCOPY} --strip-debug ${.TARGET}
 .endif
@@ -240,9 +242,7 @@ kernel-reinstall:
 
 config.o env.o hints.o vers.o vnode_if.o:
 	${NORMAL_C}
-.if defined(CTFCONVERT)
-	${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
-.endif
+	@[ -z "${CTFCONVERT}" -o -n "${NO_CTF}" ] || ${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
 
 config.ln env.ln hints.ln vers.ln vnode_if.ln:
 	${NORMAL_LINT}
diff --git a/sys/conf/kern.pre.mk b/sys/conf/kern.pre.mk
index ee74a9e..39a045a 100644
--- a/sys/conf/kern.pre.mk
+++ b/sys/conf/kern.pre.mk
@@ -128,11 +128,7 @@ NORMAL_C_NOWERROR= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC}
 NORMAL_M= ${AWK} -f $S/tools/makeobjops.awk ${.IMPSRC} -c ; \
 	  ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.PREFIX}.c
 
-.if defined(CTFCONVERT)
-NORMAL_CTFCONVERT= ${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
-.else
-NORMAL_CTFCONVERT=
-.endif
+NORMAL_CTFCONVERT= [ -z "${CTFCONVERT}" -o -n "${NO_CTF}" ] || ${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
 
 NORMAL_LINT=	${LINT} ${LINTFLAGS} ${CFLAGS:M-[DIU]*} ${.IMPSRC}
 
@@ -142,10 +138,7 @@ SYSTEM_DEP= Makefile ${SYSTEM_OBJS}
 SYSTEM_OBJS= locore.o ${MDOBJS} ${OBJS}
 SYSTEM_OBJS+= ${SYSTEM_CFILES:.c=.o}
 SYSTEM_OBJS+= hack.So
-.if defined(CTFMERGE)
-SYSTEM_CTFMERGE= ${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ${SYSTEM_OBJS} vers.o
-LD+= -g
-.endif
+SYSTEM_CTFMERGE= [ -z "${CTFMERGE}" -o -n "${NO_CTF}" ] || ${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ${SYSTEM_OBJS} vers.o
 SYSTEM_LD= @${LD} -Bdynamic -T ${LDSCRIPT} \
 	-warn-common -export-dynamic -dynamic-linker /red/herring \
 	-o ${.TARGET} -X ${SYSTEM_OBJS} vers.o
diff --git a/sys/conf/kmod.mk b/sys/conf/kmod.mk
index 2cd7509..526eec7 100644
--- a/sys/conf/kmod.mk
+++ b/sys/conf/kmod.mk
@@ -69,6 +69,11 @@ OBJCOPY?=	objcopy
 .error "Do not use KMODDEPS on 5.0+; use MODULE_VERSION/MODULE_DEPEND"
 .endif
 
+# Enable CTF conversion on request.
+.if defined(WITH_CTF)
+.undef NO_CTF
+.endif
+
 .include <bsd.init.mk>
 
 .SUFFIXES: .out .o .c .cc .cxx .C .y .l .s .S