kmod.mk revision 40433 
1#	From: @(#)bsd.prog.mk	5.26 (Berkeley) 6/25/91
2#	$Id: bsd.kmod.mk,v 1.55 1998/10/14 04:04:22 peter 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(VFS_KLD)
145CFLAGS+= -DVFS_LKM -DVFS_KLD
146SRCS+=	vnode_if.h
147CLEANFILES+=	vnode_if.h vnode_if.c
148.endif
149
150.if defined(KLDMOD) && ${OBJFORMAT} == elf
151CLEANFILES+=	setdef0.c setdef1.c setdefs.h
152CLEANFILES+=	setdef0.o setdef1.o
153.endif
154
155.if defined(PSEUDO_LKM)
156CFLAGS+= -DPSEUDO_LKM
157.endif
158
159OBJS+=  ${SRCS:N*.h:R:S/$/.o/g}
160
161.if !defined(PROG)
162.if defined(KLDMOD)
163PROG=	${KMOD}.ko
164.else
165PROG=	${KMOD}.o
166.endif
167.endif
168
169${PROG}: ${OBJS} ${DPADD} ${KMODDEPS}
170.if defined(KLDMOD)
171.if ${OBJFORMAT} == elf
172	gensetdefs ${OBJS}
173	${CC} ${CFLAGS} -c setdef0.c
174	${CC} ${CFLAGS} -c setdef1.c
175	${LD} -Bshareable ${LDFLAGS} -o ${.TARGET} setdef0.o ${OBJS} setdef1.o  ${KMODDEPS}
176.else
177	${LD} -Bshareable ${LDFLAGS} -o ${.TARGET} ${OBJS} ${KMODDEPS}
178.endif
179.else
180	${LD} -r ${LDFLAGS:N-static} -o tmp.o ${OBJS}
181.if defined(EXPORT_SYMS)
182	rm -f symb.tmp
183	for i in ${EXPORT_SYMS} ; do echo $$i >> symb.tmp ; done
184	symorder -c symb.tmp tmp.o
185	rm -f symb.tmp
186.endif
187	mv tmp.o ${.TARGET}
188.endif
189
190.if defined(KMODDEPS)
191.for dep in ${KMODDEPS}
192CLEANFILES+=	${dep} ${dep}.c
193
194${dep}:
195	touch ${dep}.c
196	${CC} -shared ${CFLAGS} -o ${dep} ${dep}.c
197.endfor
198.endif
199
200.if !defined(NOMAN)
201.include <bsd.man.mk>
202.if !defined(_MANPAGES) || empty(_MANPAGES)
203MAN1=	${KMOD}.4
204.endif
205
206.elif !target(maninstall)
207maninstall: _SUBDIR
208all-man:
209.endif
210
211_ILINKS=@ machine
212
213.MAIN: all
214all: objwarn ${PROG} all-man _SUBDIR
215
216beforedepend ${OBJS}: ${_ILINKS}
217
218.if !defined(KLDMOD)
219# The search for the link targets works best if we are in a normal src
220# tree, and not too deeply below src/lkm.  If we are near "/", then
221# we may find /sys - this is harmless.  Other abnormal "sys" directories
222# found in the search are likely to cause problems.  If nothing is found,
223# then the links default to /usr/include and /usr/include/machine.
224${_ILINKS}:
225	@for up in ../.. ../../.. ; do \
226		case ${.TARGET} in \
227		machine) \
228			path=${.CURDIR}/$$up/sys/${MACHINE_ARCH}/include ; \
229			defaultpath=/usr/include/machine ;; \
230		@) \
231			path=${.CURDIR}/$$up/sys ; \
232			defaultpath=/usr/include ;; \
233		esac ; \
234		if [ -d $$path ] ; then break ; fi ; \
235		path=$$defaultpath ; \
236	done ; \
237	path=`(cd $$path && /bin/pwd)` ; \
238	${ECHO} ${.TARGET} "->" $$path ; \
239	ln -s $$path ${.TARGET}
240.else
241${_ILINKS}:
242	@set +x; for up in ../.. ../../.. ; do \
243		case ${.TARGET} in \
244		machine) \
245			testpath=${.CURDIR}/$$up/${MACHINE_ARCH}/include ; \
246			path=${.CURDIR}/$$up/${MACHINE_ARCH}/include ; \
247			defaultpath=/usr/include/machine ;; \
248		@) \
249			testpath=${.CURDIR}/$$up/sys ; \
250			path=${.CURDIR}/$$up ; \
251			defaultpath=/usr/include ;; \
252		esac ; \
253		if [ -d $$testpath ] ; then break ; fi ; \
254		path=$$defaultpath ; \
255	done ; \
256	path=`(cd $$path && /bin/pwd)` ; \
257	${ECHO} ${.TARGET} "->" $$path ; \
258	ln -s $$path ${.TARGET}
259.endif
260
261CLEANFILES+= ${KMOD} ${PROG} ${OBJS} ${_ILINKS} lkm_verify_tmp symb.tmp tmp.o
262
263.if !target(install)
264.if !target(beforeinstall)
265beforeinstall:
266.endif
267.if !target(afterinstall)
268afterinstall:
269.endif
270
271realinstall: _SUBDIR
272	${INSTALL} ${COPY} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
273	    ${INSTALLFLAGS} ${PROG} ${DESTDIR}${KMODDIR}
274.if defined(LINKS) && !empty(LINKS)
275	@set ${LINKS}; \
276	while test $$# -ge 2; do \
277		l=${DESTDIR}$$1; \
278		shift; \
279		t=${DESTDIR}$$1; \
280		shift; \
281		${ECHO} $$t -\> $$l; \
282		rm -f $$t; \
283		ln ${LN_FLAGS} $$l $$t; \
284	done; true
285.endif
286
287install: afterinstall _SUBDIR
288.if !defined(NOMAN)
289afterinstall: realinstall maninstall
290.else
291afterinstall: realinstall
292.endif
293realinstall: beforeinstall
294.endif
295
296DISTRIBUTION?=	bin
297.if !target(distribute)
298distribute: _SUBDIR
299.for dist in ${DISTRIBUTION}
300	cd ${.CURDIR} ; $(MAKE) install DESTDIR=${DISTDIR}/${dist} SHARED=copies
301.endfor
302.endif
303
304.if !target(load)
305load:	${PROG}
306	${MODLOAD} -o ${KMOD} -e${KMOD} ${PROG}
307.endif
308
309.if !target(unload)
310unload:	${PROG}
311	${MODUNLOAD} -n ${KMOD}
312.endif
313
314.if exists(${.CURDIR}/../../kern)
315KERN=	${.CURDIR}/../../kern
316.else
317KERN=	${.CURDIR}/../../sys/kern
318.endif
319
320vnode_if.h:	${KERN}/vnode_if.sh ${KERN}/vnode_if.src
321	sh ${KERN}/vnode_if.sh ${KERN}/vnode_if.src
322
323_sysregress:	${_INLINKS} ${PROG}
324	ld -A /sys/compile/LKM/kernel ${PROG} ${DEPLKMS} -o lkm_verify_tmp
325	rm lkm_verify_tmp
326
327regress:	_sysregress
328
329.include <bsd.dep.mk>
330
331.if !exists(${DEPENDFILE})
332${OBJS}: ${SRCS:M*.h}
333.endif
334
335.include <bsd.obj.mk>
336
337.include <bsd.kern.mk>
338