kmod.mk revision 40335 
1#	From: @(#)bsd.prog.mk	5.26 (Berkeley) 6/25/91
2#	$Id: bsd.kmod.mk,v 1.54 1998/10/02 05:08:09 msmith 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, ${KMOD}.o is used.
45#
46# PSEUDO_LKM	???
47#
48# SRCS          List of source files 
49#
50# KMODDEPS	List of modules which this one is dependant on
51#
52# SUBDIR        A list of subdirectories that should be built as well.
53#               Each of the targets will execute the same target in the
54#               subdirectories.
55#
56# DESTDIR, DISTDIR are set by other Makefiles (e.g. bsd.own.mk)
57#
58#
59# +++ targets +++
60#
61#       distribute:
62#               This is a variant of install, which will
63#               put the stuff into the right "distribution".
64#
65# 	install:
66#               install the program and its manual pages; if the Makefile
67#               does not itself define the target install, the targets
68#               beforeinstall and afterinstall may also be used to cause
69#               actions immediately before and after the install target
70#		is executed.
71#
72# 	load:	
73#		Load LKM.
74#
75# 	unload:
76#		Unload LKM.
77#
78# bsd.obj.mk: clean, cleandir and obj
79# bsd.dep.mk: cleandepend, depend and tags
80# bsd.man.mk: maninstall
81#
82
83MODLOAD?=	/sbin/modload
84MODUNLOAD?=	/sbin/modunload
85
86.if !target(__initialized__)
87__initialized__:
88.if exists(${.CURDIR}/../Makefile.inc)
89.include "${.CURDIR}/../Makefile.inc"
90.endif
91.endif
92
93.SUFFIXES: .out .o .c .cc .cxx .C .y .l .s .S
94
95CFLAGS+=	${COPTS} -DKERNEL ${CWARNFLAGS}
96.if defined(KLDMOD)
97CFLAGS+=	-DKLD_MODULE
98.else
99CFLAGS+=	-DACTUALLY_LKM_NOT_KERNEL
100.endif
101
102# Damn bsd.own.mk is included too early.
103.if defined(KLDMOD)
104.if ${KMODDIR} == /lkm
105KMODDIR=	/modules
106.endif
107.endif
108
109# Don't use any standard or source-relative include directories.
110# Since -nostdinc will annull any previous -I paths, we repeat all
111# such paths after -nostdinc.  It doesn't seem to be possible to
112# add to the front of `make' variable.
113_ICFLAGS:=	${CFLAGS:M-I*}
114CFLAGS+=	-nostdinc -I- ${_ICFLAGS}
115
116# Add -I paths for system headers.  Individual LKM makefiles don't
117# need any -I paths for this.  Similar defaults for .PATH can't be
118# set because there are no standard paths for non-headers.
119CFLAGS+=	-I${.OBJDIR} -I${.OBJDIR}/@
120
121# XXX this is now dubious.
122.if defined(DESTDIR)
123CFLAGS+=	-I${DESTDIR}/usr/include
124.endif
125
126.if !defined(KLDMOD)
127# XXX temporary until we build ELF kernels.
128CFLAGS+=	-aout
129LDFLAGS+=	-aout
130.endif
131
132.if defined(NOSHARED) && ( ${NOSHARED} != "no" && ${NOSHARED} != "NO" )
133LDFLAGS+= -static
134.endif
135
136EXPORT_SYMS?= _${KMOD}
137
138.if defined(VFS_LKM)
139CFLAGS+= -DVFS_LKM -DMODVNOPS=${KMOD}vnops
140SRCS+=	vnode_if.h
141CLEANFILES+=	vnode_if.h vnode_if.c
142.endif
143
144.if defined(KLDMOD) && ${OBJFORMAT} == elf
145CLEANFILES+=	setdef0.c setdef1.c setdefs.h
146CLEANFILES+=	setdef0.o setdef1.o
147.endif
148
149.if defined(PSEUDO_LKM)
150CFLAGS+= -DPSEUDO_LKM
151.endif
152
153OBJS+=  ${SRCS:N*.h:R:S/$/.o/g}
154
155.if !defined(PROG)
156.if defined(KLDMOD)
157PROG=	${KMOD}.ko
158.else
159PROG=	${KMOD}.o
160.endif
161.endif
162
163${PROG}: ${OBJS} ${DPADD} ${KMODDEPS}
164.if defined(KLDMOD)
165.if ${OBJFORMAT} == elf
166	gensetdefs ${OBJS}
167	${CC} ${CFLAGS} -c setdef0.c
168	${CC} ${CFLAGS} -c setdef1.c
169	${LD} -Bshareable ${LDFLAGS} -o ${.TARGET} setdef0.o ${OBJS} setdef1.o  ${KMODDEPS}
170.else
171	${LD} -Bshareable ${LDFLAGS} -o ${.TARGET} ${OBJS} ${KMODDEPS}
172.endif
173.else
174	${LD} -r ${LDFLAGS:N-static} -o tmp.o ${OBJS}
175.if defined(EXPORT_SYMS)
176	rm -f symb.tmp
177	for i in ${EXPORT_SYMS} ; do echo $$i >> symb.tmp ; done
178	symorder -c symb.tmp tmp.o
179	rm -f symb.tmp
180.endif
181	mv tmp.o ${.TARGET}
182.endif
183
184.if defined(KMODDEPS)
185.for dep in ${KMODDEPS}
186CLEANFILES+=	${dep} ${dep}.c
187
188${dep}:
189	touch ${dep}.c
190	${CC} -shared ${CFLAGS} -o ${dep} ${dep}.c
191.endfor
192.endif
193
194.if !defined(NOMAN)
195.include <bsd.man.mk>
196.if !defined(_MANPAGES) || empty(_MANPAGES)
197MAN1=	${KMOD}.4
198.endif
199
200.elif !target(maninstall)
201maninstall: _SUBDIR
202all-man:
203.endif
204
205_ILINKS=@ machine
206
207.MAIN: all
208all: objwarn ${PROG} all-man _SUBDIR
209
210beforedepend ${OBJS}: ${_ILINKS}
211
212# The search for the link targets works best if we are in a normal src
213# tree, and not too deeply below src/lkm.  If we are near "/", then
214# we may find /sys - this is harmless.  Other abnormal "sys" directories
215# found in the search are likely to cause problems.  If nothing is found,
216# then the links default to /usr/include and /usr/include/machine.
217${_ILINKS}:
218	@for up in ../.. ../../.. ; do \
219		case ${.TARGET} in \
220		machine) \
221			path=${.CURDIR}/$$up/sys/${MACHINE_ARCH}/include ; \
222			defaultpath=/usr/include/machine ;; \
223		@) \
224			path=${.CURDIR}/$$up/sys ; \
225			defaultpath=/usr/include ;; \
226		esac ; \
227		if [ -d $$path ] ; then break ; fi ; \
228		path=$$defaultpath ; \
229	done ; \
230	path=`(cd $$path && /bin/pwd)` ; \
231	${ECHO} ${.TARGET} "->" $$path ; \
232	ln -s $$path ${.TARGET}
233
234CLEANFILES+= ${KMOD} ${PROG} ${OBJS} ${_ILINKS} lkm_verify_tmp symb.tmp tmp.o
235
236.if !target(install)
237.if !target(beforeinstall)
238beforeinstall:
239.endif
240.if !target(afterinstall)
241afterinstall:
242.endif
243
244realinstall: _SUBDIR
245	${INSTALL} ${COPY} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
246	    ${INSTALLFLAGS} ${PROG} ${DESTDIR}${KMODDIR}
247.if defined(LINKS) && !empty(LINKS)
248	@set ${LINKS}; \
249	while test $$# -ge 2; do \
250		l=${DESTDIR}$$1; \
251		shift; \
252		t=${DESTDIR}$$1; \
253		shift; \
254		${ECHO} $$t -\> $$l; \
255		rm -f $$t; \
256		ln ${LN_FLAGS} $$l $$t; \
257	done; true
258.endif
259
260install: afterinstall _SUBDIR
261.if !defined(NOMAN)
262afterinstall: realinstall maninstall
263.else
264afterinstall: realinstall
265.endif
266realinstall: beforeinstall
267.endif
268
269DISTRIBUTION?=	bin
270.if !target(distribute)
271distribute: _SUBDIR
272.for dist in ${DISTRIBUTION}
273	cd ${.CURDIR} ; $(MAKE) install DESTDIR=${DISTDIR}/${dist} SHARED=copies
274.endfor
275.endif
276
277.if !target(load)
278load:	${PROG}
279	${MODLOAD} -o ${KMOD} -e${KMOD} ${PROG}
280.endif
281
282.if !target(unload)
283unload:	${PROG}
284	${MODUNLOAD} -n ${KMOD}
285.endif
286
287KERN=	${.CURDIR}/../../sys/kern
288
289vnode_if.h:	${KERN}/vnode_if.sh ${KERN}/vnode_if.src
290	sh ${KERN}/vnode_if.sh ${KERN}/vnode_if.src
291
292_sysregress:	${_INLINKS} ${PROG}
293	ld -A /sys/compile/LKM/kernel ${PROG} ${DEPLKMS} -o lkm_verify_tmp
294	rm lkm_verify_tmp
295
296regress:	_sysregress
297
298.include <bsd.dep.mk>
299
300.if !exists(${DEPENDFILE})
301${OBJS}: ${SRCS:M*.h}
302.endif
303
304.include <bsd.obj.mk>
305
306.include <bsd.kern.mk>
307