FAST_DEPEND: Fix incremental builds leading to kernel panics.

This fixes .depend.genassym.o not being included.  genassym.o depends on
all of the system headers and when rebuilt regenerates assym.s which
lists offsets for critial .S files to utilize.  By having a struct in a
system header change its offsets and not have generassym.o be rebuilt,
this would lead to panics.

The flaw in the initial commit was seeing ${OBJS} in ${SYSTEM_OBJS} and
assuming it had all of ${SRCS} in it.  This is not the case though.  The
older mkdep code splits out all of the various SRC lists for generating
the .depend file.  It also includes ${GEN_CFILES}, which had genassym.c
and was the only significant file lacking from ${SYSTEM_OBJS} upon inspection,
since it is not linked in.  Rather than duplicate the likely
soon-to-be-removed mkdep lists, just add genassym.o to the DEPENDOBJS
list.  Using ${SRCS} as bsd.dep.mk does would be nice but there are many
files in the build that are only added to ${OBJS} and not ${SRCS}, such
as bf_enc.o derived from bf_enc.S for i386.

Sponsored by:	EMC / Isilon Storage Division
Reported by:	dhw (several panics on current@)
Pointyhat to:	bdrewery

1 files changed, 1 insertions, 1 deletions

diff --git a/sys/conf/kern.post.mk b/sys/conf/kern.post.mk
index ecff245..63aeab1 100644
--- a/sys/conf/kern.post.mk
+++ b/sys/conf/kern.post.mk
@@ -205,7 +205,7 @@ DEPENDFILES+=	.depend.*
 DEPEND_CFLAGS+=	-MD -MP -MF.depend.${.TARGET}
 DEPEND_CFLAGS+=	-MT${.TARGET}
 CFLAGS+=	${DEPEND_CFLAGS}
-DEPENDOBJS+=	${SYSTEM_OBJS}
+DEPENDOBJS+=	${SYSTEM_OBJS} genassym.o
 DEPENDFILES_OBJS=	${DEPENDOBJS:O:u:C/^/.depend./}
 .if ${.MAKEFLAGS:M-V} == ""
 .for __depend_obj in ${DEPENDFILES_OBJS}