kmod.mk revision 39883 
1#	From: @(#)bsd.prog.mk	5.26 (Berkeley) 6/25/91
2#	$Id: bsd.kmod.mk,v 1.53 1998/10/02 04:51:10 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 -DACTUALLY_LKM_NOT_KERNEL ${CWARNFLAGS}
96.if defined(KLDMOD)
97CFLAGS+=	-DKLD_MODULE
98.endif
99
100# Don't use any standard or source-relative include directories.
101# Since -nostdinc will annull any previous -I paths, we repeat all
102# such paths after -nostdinc.  It doesn't seem to be possible to
103# add to the front of `make' variable.
104_ICFLAGS:=	${CFLAGS:M-I*}
105CFLAGS+=	-nostdinc -I- ${_ICFLAGS}
106
107# Add -I paths for system headers.  Individual LKM makefiles don't
108# need any -I paths for this.  Similar defaults for .PATH can't be
109# set because there are no standard paths for non-headers.
110CFLAGS+=	-I${.OBJDIR} -I${.OBJDIR}/@
111
112# XXX this is now dubious.
113.if defined(DESTDIR)
114CFLAGS+=	-I${DESTDIR}/usr/include
115.endif
116
117# XXX temporary until we build ELF kernels.
118CFLAGS+=	-aout
119LDFLAGS+=	-aout
120
121.if defined(NOSHARED) && ( ${NOSHARED} != "no" && ${NOSHARED} != "NO" )
122LDFLAGS+= -static
123.endif
124
125EXPORT_SYMS?= _${KMOD}
126
127.if defined(VFS_LKM)
128CFLAGS+= -DVFS_LKM -DMODVNOPS=${KMOD}vnops
129SRCS+=	vnode_if.h
130CLEANFILES+=	vnode_if.h vnode_if.c
131.endif
132
133.if defined(PSEUDO_LKM)
134CFLAGS+= -DPSEUDO_LKM
135.endif
136
137OBJS+=  ${SRCS:N*.h:R:S/$/.o/g}
138
139.if !defined(PROG)
140.if defined(KLDMOD)
141PROG=	${KMOD}.ko
142.else
143PROG=	${KMOD}.o
144.endif
145.endif
146
147${PROG}: ${OBJS} ${DPADD} 
148.if defined(KLDMOD)
149	${LD} -Bshareable ${LDFLAGS} -o ${.TARGET} ${OBJS} ${KMODDEPS}
150.else
151	${LD} -r ${LDFLAGS:N-static} -o tmp.o ${OBJS}
152.if defined(EXPORT_SYMS)
153	rm -f symb.tmp
154	for i in ${EXPORT_SYMS} ; do echo $$i >> symb.tmp ; done
155	symorder -c symb.tmp tmp.o
156	rm -f symb.tmp
157.endif
158	mv tmp.o ${.TARGET}
159.endif
160
161.if !defined(NOMAN)
162.include <bsd.man.mk>
163.if !defined(_MANPAGES) || empty(_MANPAGES)
164MAN1=	${KMOD}.4
165.endif
166
167.elif !target(maninstall)
168maninstall: _SUBDIR
169all-man:
170.endif
171
172_ILINKS=@ machine
173
174.MAIN: all
175all: objwarn ${PROG} all-man _SUBDIR
176
177beforedepend ${OBJS}: ${_ILINKS}
178
179# The search for the link targets works best if we are in a normal src
180# tree, and not too deeply below src/lkm.  If we are near "/", then
181# we may find /sys - this is harmless.  Other abnormal "sys" directories
182# found in the search are likely to cause problems.  If nothing is found,
183# then the links default to /usr/include and /usr/include/machine.
184${_ILINKS}:
185	@for up in ../.. ../../.. ; do \
186		case ${.TARGET} in \
187		machine) \
188			path=${.CURDIR}/$$up/sys/${MACHINE_ARCH}/include ; \
189			defaultpath=/usr/include/machine ;; \
190		@) \
191			path=${.CURDIR}/$$up/sys ; \
192			defaultpath=/usr/include ;; \
193		esac ; \
194		if [ -d $$path ] ; then break ; fi ; \
195		path=$$defaultpath ; \
196	done ; \
197	path=`(cd $$path && /bin/pwd)` ; \
198	${ECHO} ${.TARGET} "->" $$path ; \
199	ln -s $$path ${.TARGET}
200
201CLEANFILES+= ${KMOD} ${PROG} ${OBJS} ${_ILINKS} lkm_verify_tmp symb.tmp tmp.o
202
203.if !target(install)
204.if !target(beforeinstall)
205beforeinstall:
206.endif
207.if !target(afterinstall)
208afterinstall:
209.endif
210
211realinstall: _SUBDIR
212	${INSTALL} ${COPY} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
213	    ${INSTALLFLAGS} ${PROG} ${DESTDIR}${KMODDIR}
214.if defined(LINKS) && !empty(LINKS)
215	@set ${LINKS}; \
216	while test $$# -ge 2; do \
217		l=${DESTDIR}$$1; \
218		shift; \
219		t=${DESTDIR}$$1; \
220		shift; \
221		${ECHO} $$t -\> $$l; \
222		rm -f $$t; \
223		ln ${LN_FLAGS} $$l $$t; \
224	done; true
225.endif
226
227install: afterinstall _SUBDIR
228.if !defined(NOMAN)
229afterinstall: realinstall maninstall
230.else
231afterinstall: realinstall
232.endif
233realinstall: beforeinstall
234.endif
235
236DISTRIBUTION?=	bin
237.if !target(distribute)
238distribute: _SUBDIR
239.for dist in ${DISTRIBUTION}
240	cd ${.CURDIR} ; $(MAKE) install DESTDIR=${DISTDIR}/${dist} SHARED=copies
241.endfor
242.endif
243
244.if !target(load)
245load:	${PROG}
246	${MODLOAD} -o ${KMOD} -e${KMOD} ${PROG}
247.endif
248
249.if !target(unload)
250unload:	${PROG}
251	${MODUNLOAD} -n ${KMOD}
252.endif
253
254KERN=	${.CURDIR}/../../sys/kern
255
256vnode_if.h:	${KERN}/vnode_if.sh ${KERN}/vnode_if.src
257	sh ${KERN}/vnode_if.sh ${KERN}/vnode_if.src
258
259_sysregress:	${_INLINKS} ${PROG}
260	ld -A /sys/compile/LKM/kernel ${PROG} ${DEPLKMS} -o lkm_verify_tmp
261	rm lkm_verify_tmp
262
263regress:	_sysregress
264
265.include <bsd.dep.mk>
266
267.if !exists(${DEPENDFILE})
268${OBJS}: ${SRCS:M*.h}
269.endif
270
271.include <bsd.obj.mk>
272
273.include <bsd.kern.mk>
274