'silent' kernel builds ?

[Luigi Rizzo]

Hi,
I was trying to make buildkernel a bit quieter (just listing
the name of the file being compiled).

I hoped to modify the " .c.o: " rules in  share/sys.mk but apparently
kernel builds generate their own Makefile using definitions in
sys/conf/kern.pre.mk .

As a result, a patch like the one below gets most of the work done
(a few extra bits are necessary to mask the awk calls, and the
'irregular' compiler invocations).

However I could not found the rule definition used to build modules,
any idea where to look ?

And finally, is there interest in this feature ?

	cheers
	luigi


Index: head/sys/conf/kern.pre.mk
===================================================================
--- head/sys/conf/kern.pre.mk	(revision 258360)
+++ head/sys/conf/kern.pre.mk	(working copy)
@@ -126,7 +126,12 @@
 # Optional linting. This can be overridden in /etc/make.conf.
 LINTFLAGS=	${LINTOBJKERNFLAGS}
 
-NORMAL_C= ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
+.if defined(SILENT)
+SILENT_MAKE= @
+SILENT_GCC= @printf "%s\n" "---  Building  ${.IMPSRC} -------";
+.endif
+
+NORMAL_C= ${SILENT_GCC} ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
 NORMAL_S= ${CC} -c ${ASM_CFLAGS} ${WERROR} ${.IMPSRC}
 PROFILE_C= ${CC} -c ${CFLAGS} ${WERROR} ${.IMPSRC}
 NORMAL_C_NOWERROR= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC}
@@ -146,7 +151,7 @@
 ZFS_S=		${CC} -c ${ZFS_ASM_CFLAGS} ${WERROR} ${.IMPSRC}
 
 .if ${MK_CTF} != "no"
-NORMAL_CTFCONVERT=	${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
+NORMAL_CTFCONVERT= ${SILENT_MAKE}	${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
 .elif ${MAKE_VERSION} >= 5201111300
 NORMAL_CTFCONVERT=
 .else