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#	$Id: bsd.dep.mk,v 1.3 1996/04/01 18:58:28 wosch Exp $
#
# The include file <bsd.dep.mk> handles Makefile dependencies.
#
#
# +++ variables +++
#
# DEPENDFILE	dependencies file [.depend]
#
# MKDEP		Options for ${MKDEPCMD} [not set]
#
# MKDEPCMD	Makefile dependency list program [mkdep]
# 
# SRCS          List of source files (c, c++, assembler)
#
#
# +++ targets +++
#
#	cleandepend:
#		Remove depend and tags file
#
#	depend:
#		Make the dependencies for the source files, and store
#		them in the file ${DEPENDFILE}.
#
#	tags:
#		Create a tags file for the source files.
#


MKDEPCMD?=	mkdep
DEPENDFILE?=	.depend

# some of the rules involve .h sources, so remove them from mkdep line
.if !target(depend)
depend: beforedepend ${DEPENDFILE} afterdepend ${_DEPSUBDIR}
.if defined(SRCS)

# .if defined ${SRCS:M*.[sS]} does not work
__depend_s=	${SRCS:M*.[sS]}
__depend_c=	${SRCS:M*.c}
__depend_cc=	${SRCS:M*.cc} ${SRCS:M*.C} ${SRCS:M*.cxx}

${DEPENDFILE}: ${SRCS}
	rm -f ${DEPENDFILE}
.if defined(__depend_s) && !empty(__depend_s)
	${MKDEPCMD} -f ${DEPENDFILE} -a ${MKDEP} ${CFLAGS:M-[ID]*} ${AINC} \
		${.ALLSRC:M*.[sS]}
.endif
.if defined(__depend_c) && !empty(__depend_c)
	${MKDEPCMD} -f ${DEPENDFILE} -a ${MKDEP} ${CFLAGS:M-[ID]*} \
		${.ALLSRC:M*.c}
.endif
.if defined(__depend_cc) && !empty(__depend_cc)
	${MKDEPCMD} -f ${DEPENDFILE} -a ${MKDEP} \
		${CXXFLAGS:M-nostd*} ${CXXFLAGS:M-[ID]*} \
		${.ALLSRC:M*.cc} ${.ALLSRC:M*.C} ${.ALLSRC:M*.cxx}
.endif

.else
${DEPENDFILE}: ${_DEPSUBDIR}
.endif
.if !target(beforedepend)
beforedepend:
.endif
.if !target(afterdepend)
afterdepend:
.endif
.endif

.if !target(tags)
.if defined(SRCS)
tags: ${SRCS}
	-cd ${.CURDIR}; ctags -f /dev/stdout ${.ALLSRC:N*.h} | \
	    sed "s;\${.CURDIR}/;;" > tags
.else
tags:
.endif
.endif

.if defined(SRCS)
clean:
cleandir: cleandepend
cleandepend:
	rm -f ${DEPENDFILE} ${.CURDIR}/tags
.endif
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