kmod.mk revision 32985 
1#	From: @(#)bsd.prog.mk	5.26 (Berkeley) 6/25/91
2#	$Id: bsd.kmod.mk,v 1.42 1998/01/26 20:36:38 bde Exp $
3#
4# The include file <bsd.kmod.mk> handles installing Loadable Kernel Modules.
5#
6#
7# +++ variables +++
8#
9# CLEANFILES	Additional files to remove for the clean and cleandir targets.
10#
11# DISTRIBUTION  Name of distribution. [bin]
12#
13# EXPORT_SYMS	???
14#
15# KERN		Main Kernel source directory. [${.CURDIR}/../../sys/kern]
16#
17# KMOD          The name of the loadable kernel module to build.
18#
19# KMODDIR	Base path for loadable kernel modules
20#		(see lkm(4)). [/lkm]
21#
22# KMODOWN	LKM owner. [${BINOWN}]
23#
24# KMODGRP	LKM group. [${BINGRP}]
25#
26# KMODMODE	LKM mode. [${BINMODE}]
27#
28# LINKS		The list of LKM links; should be full pathnames, the
29#               linked-to file coming first, followed by the linked
30#               file.  The files are hard-linked.  For example, to link
31#               /lkm/master and /lkm/meister, use:
32#
33#			LINKS=  /lkm/master /lkm/meister
34#
35# LN_FLAGS	Flags for ln(1) (see variable LINKS)
36#
37# MODLOAD	Command to load a kernel module [/sbin/modload]
38#
39# MODUNLOAD	Command to unload a kernel module [/sbin/modunload]
40#
41# NOMAN		LKM does not have a manual page if set.
42#
43# PROG          The name of the loadable kernel module to build. 
44#		If not supplied, ${KMOD}.o is used.
45#
46# PSEUDO_LKM	???
47#
48# SRCS          List of source files 
49#
50# SUBDIR        A list of subdirectories that should be built as well.
51#               Each of the targets will execute the same target in the
52#               subdirectories.
53#
54# DESTDIR, DISTDIR are set by other Makefiles (e.g. bsd.own.mk)
55#
56#
57# +++ targets +++
58#
59#       distribute:
60#               This is a variant of install, which will
61#               put the stuff into the right "distribution".
62#
63# 	install:
64#               install the program and its manual pages; if the Makefile
65#               does not itself define the target install, the targets
66#               beforeinstall and afterinstall may also be used to cause
67#               actions immediately before and after the install target
68#		is executed.
69#
70# 	load:	
71#		Load LKM.
72#
73# 	tags:
74#		Create a tags file for the source files.
75#
76# 	unload:
77#		Unload LKM.
78#
79# bsd.obj.mk: clean, cleandir and obj
80# bsd.dep.mk: depend
81# bsd.man.mk: maninstall
82#
83
84MODLOAD?=	/sbin/modload
85MODUNLOAD?=	/sbin/modunload
86
87.if exists(${.CURDIR}/../Makefile.inc)
88.include "${.CURDIR}/../Makefile.inc"
89.endif
90
91.SUFFIXES: .out .o .c .cc .cxx .C .y .l .s .S
92
93CFLAGS+=	${COPTS} -DKERNEL -DACTUALLY_LKM_NOT_KERNEL ${CWARNFLAGS}
94
95# Don't use any standard or source-relative include directories.
96# Since -nostdinc will annull any previous -I paths, we repeat all
97# such paths after -nostdinc.  It doesn't seem to be possible to
98# add to the front of `make' variable.
99_ICFLAGS:=	${CFLAGS:M-I*}
100CFLAGS+=	-nostdinc -I- ${_ICFLAGS}
101
102# Add -I paths for system headers.  Individual LKM makefiles don't
103# need any -I paths for this.  Similar defaults for .PATH can't be
104# set because there are no standard paths for non-headers.
105CFLAGS+=	-I${.OBJDIR} -I${.OBJDIR}/@
106
107# XXX this is now dubious.
108.if defined(DESTDIR)
109CFLAGS+=	-I${DESTDIR}/usr/include
110.endif
111
112EXPORT_SYMS?= _${KMOD}
113
114.if defined(VFS_LKM)
115CFLAGS+= -DVFS_LKM -DMODVNOPS=${KMOD}vnops
116SRCS+=	vnode_if.h
117CLEANFILES+=	vnode_if.h vnode_if.c
118.endif
119
120.if defined(PSEUDO_LKM)
121CFLAGS+= -DPSEUDO_LKM
122.endif
123
124DPSRCS+= ${SRCS:M*.h}
125OBJS+=  ${SRCS:N*.h:R:S/$/.o/g}
126
127.if !defined(PROG)
128PROG=	${KMOD}.o
129.endif
130
131${PROG}: ${DPSRCS} ${OBJS} ${DPADD} 
132	${LD} -r ${LDFLAGS} -o tmp.o ${OBJS}
133.if defined(EXPORT_SYMS)
134	@rm -f symb.tmp
135	@for i in ${EXPORT_SYMS} ; do echo $$i >> symb.tmp ; done
136	symorder -c symb.tmp tmp.o
137	@rm -f symb.tmp
138.endif
139	mv tmp.o ${.TARGET}
140
141.if !defined(NOMAN)
142.include <bsd.man.mk>
143.if !defined(_MANPAGES) || empty(_MANPAGES)
144MAN1=	${KMOD}.4
145.endif
146
147.elif !target(maninstall)
148maninstall: _SUBDIR
149all-man:
150.endif
151
152_ILINKS=@ machine
153
154.MAIN: all
155all: ${_ILINKS} objwarn ${PROG} all-man _SUBDIR
156
157beforedepend: ${_ILINKS}
158
159# The search for the link targets works best if we are in a normal src
160# tree, and not too deeply below src/lkm.  If we are near "/", then
161# we may find /sys - this is harmless.  Other abnormal "sys" directories
162# found in the search are likely to cause problems.  If nothing is found,
163# then the links default to /usr/include and /usr/include/machine.
164${_ILINKS}:
165	@for up in ../.. ../../.. ; do \
166		case ${.TARGET} in \
167		machine) \
168			path=${.CURDIR}/$$up/sys/${MACHINE_ARCH}/include ; \
169			defaultpath=/usr/include/machine ;; \
170		@) \
171			path=${.CURDIR}/$$up/sys ; \
172			defaultpath=/usr/include ;; \
173		esac ; \
174		if [ -d $$path ] ; then break ; fi ; \
175		path=$$defaultpath ; \
176	done ; \
177	path=`(cd $$path && /bin/pwd)` ; \
178	${ECHO} ${.TARGET} "->" $$path ; \
179	ln -s $$path ${.TARGET}
180
181CLEANFILES+= ${KMOD} ${PROG} ${OBJS} ${_ILINKS}
182
183.if !target(install)
184.if !target(beforeinstall)
185beforeinstall:
186.endif
187.if !target(afterinstall)
188afterinstall:
189.endif
190
191realinstall: _SUBDIR
192	${INSTALL} ${COPY} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
193	    ${INSTALLFLAGS} ${PROG} ${DESTDIR}${KMODDIR}
194.if defined(LINKS) && !empty(LINKS)
195	@set ${LINKS}; \
196	while test $$# -ge 2; do \
197		l=${DESTDIR}$$1; \
198		shift; \
199		t=${DESTDIR}$$1; \
200		shift; \
201		${ECHO} $$t -\> $$l; \
202		rm -f $$t; \
203		ln ${LN_FLAGS} $$l $$t; \
204	done; true
205.endif
206
207install: afterinstall _SUBDIR
208.if !defined(NOMAN)
209afterinstall: realinstall maninstall
210.else
211afterinstall: realinstall
212.endif
213realinstall: beforeinstall
214.endif
215
216DISTRIBUTION?=	bin
217.if !target(distribute)
218distribute: _SUBDIR
219.for dist in ${DISTRIBUTION}
220	cd ${.CURDIR} ; $(MAKE) install DESTDIR=${DISTDIR}/${dist} SHARED=copies
221.endfor
222.endif
223
224.if defined(NOTAGS)
225tags:
226.endif
227
228.if !target(tags)
229tags: ${SRCS} _SUBDIR
230.if defined(PROG)
231	@cd ${.CURDIR} && gtags ${GTAGSFLAGS}
232.if defined(HTML)
233	@cd ${.CURDIR} && htags ${HTAGSFLAGS}
234.endif
235.endif
236.endif
237
238
239.if !target(load)
240load:	${PROG}
241	${MODLOAD} -o ${KMOD} -e${KMOD} ${PROG}
242.endif
243
244.if !target(unload)
245unload:	${PROG}
246	${MODUNLOAD} -n ${KMOD}
247.endif
248
249KERN=	${.CURDIR}/../../sys/kern
250
251vnode_if.h:	${KERN}/vnode_if.sh ${KERN}/vnode_if.src
252	sh ${KERN}/vnode_if.sh ${KERN}/vnode_if.src
253
254./vnode_if.h:	vnode_if.h
255
256.include <bsd.obj.mk>
257.include <bsd.dep.mk>
258.include <bsd.kern.mk>
259