Normally, when a header file is removed from the build (as i4b headers

were recently), a simple 'make cleandepend; make depend' is sufficient
to keep the tree buildable after a cvs update when doing incremental
builds.

However, kdump and truss use a script which searches for header files
that define ioctls, and generates C code that includes them.  This
script will usually not need updating when a header file is removed,
so the normal dependency mechanism will not realize that it needs to
be re-run.  One is therefore left with code that references dead files
but will only be removed by a full 'make clean', which defeats the
purpose of incremental builds.

To work around this, modify the cleandepend target in bsd.dep.mk to
also remove any files listed in a new variable named CLEANDEPFILES,
and modify kdump's and truss's Makefiles accordingly.

MFC after:	2 weeks

1 files changed, 3 insertions, 2 deletions

diff --git a/usr.bin/truss/Makefile b/usr.bin/truss/Makefile
index 18c2b932c677..35ec96953588 100644
--- a/usr.bin/truss/Makefile
+++ b/usr.bin/truss/Makefile
@@ -1,6 +1,6 @@
 # $FreeBSD$
 
-WARNS?= 6	
+WARNS?= 6
 NO_WERROR=
 PROG=	truss
 SRCS=	main.c setup.c syscalls.c syscalls.h ioctl.c ${MACHINE_ARCH}-fbsd.c
@@ -9,8 +9,9 @@ SRCS+=	i386-linux.c linux_syscalls.h
 .endif
 
 CFLAGS+= -I${.CURDIR} -I.
-CLEANFILES+=i386l-syscalls.master syscalls.master linux_syscalls.h \
+CLEANDEPFILES=i386l-syscalls.master syscalls.master linux_syscalls.h \
 	syscalls.h ioctl.c
+CLEANFILES+=${CLEANDEPFILES}
 
 .SUFFIXES: .master