kmod.mk revision 122085 
1#	From: @(#)bsd.prog.mk	5.26 (Berkeley) 6/25/91
2# $FreeBSD: head/sys/conf/kmod.mk 122085 2003-11-04 23:29:17Z peter $
3#
4# The include file <bsd.kmod.mk> handles installing Kernel Loadable Device
5# drivers (KLD's).
6#
7#
8# +++ variables +++
9#
10# CLEANFILES	Additional files to remove for the clean and cleandir targets.
11#
12# KMOD          The name of the kernel module to build.
13#
14# KMODDIR	Base path for kernel modules (see kld(4)). [/boot/kernel]
15#
16# KMODOWN	KLD owner. [${BINOWN}]
17#
18# KMODGRP	KLD group. [${BINGRP}]
19#
20# KMODMODE	KLD mode. [${BINMODE}]
21#
22# KMODLOAD	Command to load a kernel module [/sbin/kldload]
23#
24# KMODUNLOAD	Command to unload a kernel module [/sbin/kldunload]
25#
26# PROG          The name of the kernel module to build.
27#		If not supplied, ${KMOD}.o is used.
28#
29# SRCS          List of source files
30#
31# DESTDIR	Change the tree where the module gets installed. [not set]
32#
33# MFILES	Optionally a list of interfaces used by the module.
34#		This file contains a default list of interfaces.
35#
36# EXPORT_SYMS	A list of symbols that should be exported from the module,
37#		or the name of a file containing a list of symbols, or YES
38#		to export all symbols.  If not defined, no symbols are
39#		exported.
40#
41# +++ targets +++
42#
43# 	install:
44#               install the kernel module; if the Makefile
45#               does not itself define the target install, the targets
46#               beforeinstall and afterinstall may also be used to cause
47#               actions immediately before and after the install target
48#		is executed.
49#
50# 	load:
51#		Load KLD.
52#
53# 	unload:
54#		Unload KLD.
55#
56# bsd.obj.mk: clean, cleandir and obj
57# bsd.dep.mk: cleandepend, depend and tags
58#
59
60AWK?=		awk
61KMODLOAD?=	/sbin/kldload
62KMODUNLOAD?=	/sbin/kldunload
63OBJCOPY?=	objcopy
64
65.if defined(KMODDEPS)
66.error "Do not use KMODDEPS on 5.0+, use MODULE_VERSION/MODULE_DEPEND"
67.endif
68
69.include <bsd.init.mk>
70
71.SUFFIXES: .out .o .c .cc .cxx .C .y .l .s .S
72
73CFLAGS+=	${COPTS} -D_KERNEL ${CWARNFLAGS}
74CFLAGS+=	-DKLD_MODULE
75
76# Don't use any standard or source-relative include directories.
77# Since -nostdinc will annull any previous -I paths, we repeat all
78# such paths after -nostdinc.  It doesn't seem to be possible to
79# add to the front of `make' variable.
80_ICFLAGS:=	${CFLAGS:M-I*}
81CFLAGS+=	-nostdinc -I- ${INCLMAGIC} ${_ICFLAGS}
82
83# Add -I paths for system headers.  Individual KLD makefiles don't
84# need any -I paths for this.  Similar defaults for .PATH can't be
85# set because there are no standard paths for non-headers.
86CFLAGS+=	-I. -I@
87
88# Add a -I path to standard headers like <stddef.h>.  Use a relative
89# path to src/include if possible.  If the @ symlink hasn't been built
90# yet, then we can't tell if the relative path exists.  Add both the
91# potential relative path and an absolute path in that case.
92.if exists(@)
93.if exists(@/../include)
94CFLAGS+=	-I@/../include
95.else
96CFLAGS+=	-I${DESTDIR}/usr/include
97.endif
98.else # !@
99CFLAGS+=	-I@/../include -I${DESTDIR}/usr/include
100.endif # @
101
102CFLAGS+=	-finline-limit=${INLINE_LIMIT}
103
104# Disallow common variables, and if we end up with commons from
105# somewhere unexpected, allocate storage for them in the module itself.
106CFLAGS+=	-fno-common
107LDFLAGS+=	-d -warn-common
108
109CFLAGS+=	${DEBUG_FLAGS}
110
111OBJS+=  ${SRCS:N*.h:R:S/$/.o/g}
112
113.if !defined(PROG)
114PROG=	${KMOD}.ko
115.endif
116
117.if !defined(DEBUG)
118FULLPROG=	${PROG}
119.else
120FULLPROG=	${PROG}.debug
121${PROG}: ${FULLPROG}
122	${OBJCOPY} --strip-debug ${FULLPROG} ${PROG}
123.endif
124
125${FULLPROG}: ${KMOD}.kld
126	${LD} -Bshareable ${LDFLAGS} -o ${.TARGET} ${KMOD}.kld
127
128EXPORT_SYMS?=	NO
129.if ${EXPORT_SYMS} != YES
130CLEANFILES+=	${.OBJDIR}/export_syms
131.endif
132
133${KMOD}.kld: ${OBJS}
134	${LD} ${LDFLAGS} -r -d -o ${.TARGET} ${OBJS}
135.if defined(EXPORT_SYMS)
136.if ${EXPORT_SYMS} != YES
137.if ${EXPORT_SYMS} == NO
138	touch ${.OBJDIR}/export_syms
139.elif !exists(${.CURDIR}/${EXPORT_SYMS})
140	echo ${EXPORT_SYMS} > ${.OBJDIR}/export_syms
141.else
142	grep -v '^#' < ${EXPORT_SYMS} >  ${.OBJDIR}/export_syms
143.endif
144	awk -f ${SYSDIR}/conf/kmod_syms.awk ${.TARGET} \
145		${.OBJDIR}/export_syms | \
146	xargs -J% ${OBJCOPY} % ${.TARGET}
147.endif
148.endif
149
150_ILINKS=@ machine
151
152all: objwarn ${PROG}
153
154beforedepend: ${_ILINKS}
155	@rm -f .depend
156
157# Ensure that the links exist without depending on it when it exists which
158# causes all the modules to be rebuilt when the directory pointed to changes.
159.for _link in ${_ILINKS}
160.if !exists(${.OBJDIR}/${_link})
161${OBJS}: ${_link}
162.endif
163.endfor
164
165# Search for kernel source tree in standard places.
166.for _dir in ${.CURDIR}/../.. ${.CURDIR}/../../.. /sys /usr/src/sys
167.if !defined(SYSDIR) && exists(${_dir}/kern)
168SYSDIR=	${_dir}
169.endif
170.endfor
171.if !defined(SYSDIR) || !exists(${SYSDIR}/kern)
172.error "can't find kernel source tree"
173.endif
174
175${_ILINKS}:
176	@case ${.TARGET} in \
177	machine) \
178		path=${SYSDIR}/${MACHINE_ARCH}/include ;; \
179	@) \
180		path=${SYSDIR} ;; \
181	esac ; \
182	path=`(cd $$path && /bin/pwd)` ; \
183	${ECHO} ${.TARGET} "->" $$path ; \
184	ln -s $$path ${.TARGET}
185
186CLEANFILES+= ${PROG} ${KMOD}.kld ${OBJS} ${_ILINKS} symb.tmp tmp.o
187
188.if defined(DEBUG)
189CLEANFILES+= ${FULLPROG}
190.endif
191
192.if !target(install)
193
194_INSTALLFLAGS:=	${INSTALLFLAGS}
195.for ie in ${INSTALLFLAGS_EDIT}
196_INSTALLFLAGS:=	${_INSTALLFLAGS${ie}}
197.endfor
198
199.if defined(DEBUG)
200install.debug:
201	cd ${.CURDIR}; ${MAKE} -DINSTALL_DEBUG install
202.endif
203
204.if !target(realinstall)
205realinstall: _kmodinstall
206.ORDER: beforeinstall _kmodinstall
207.if defined(DEBUG) && defined(INSTALL_DEBUG)
208_kmodinstall:
209	${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
210	    ${_INSTALLFLAGS} ${FULLPROG} ${DESTDIR}${KMODDIR}
211.else
212_kmodinstall:
213	${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
214	    ${_INSTALLFLAGS} ${PROG} ${DESTDIR}${KMODDIR}
215
216.include <bsd.links.mk>
217
218.if !defined(NO_XREF)
219afterinstall: _kldxref
220.ORDER: realinstall _kldxref
221.ORDER: _installlinks _kldxref
222_kldxref:
223	@if type kldxref >/dev/null 2>&1; then \
224		${ECHO} kldxref ${DESTDIR}${KMODDIR}; \
225		kldxref ${DESTDIR}${KMODDIR}; \
226	fi
227.endif
228.endif
229.endif !target(realinstall)
230
231.endif !target(install)
232
233.if !target(load)
234load:	${PROG}
235	${KMODLOAD} -v ${.OBJDIR}/${KMOD}.ko
236.endif
237
238.if !target(unload)
239unload:
240	${KMODUNLOAD} -v ${KMOD}
241.endif
242
243.for _src in ${SRCS:Mopt_*.h}
244CLEANFILES+=	${_src}
245.if !target(${_src})
246${_src}:
247	touch ${.TARGET}
248.endif
249.endfor
250
251MFILES?= kern/bus_if.m kern/device_if.m dev/iicbus/iicbb_if.m \
252    dev/iicbus/iicbus_if.m isa/isa_if.m \
253    libkern/iconv_converter_if.m \
254    dev/mii/miibus_if.m \
255    dev/pccard/card_if.m dev/pccard/power_if.m dev/pci/pci_if.m \
256    dev/pci/pcib_if.m dev/ppbus/ppbus_if.m dev/smbus/smbus_if.m \
257    dev/usb/usb_if.m dev/sound/pcm/ac97_if.m dev/sound/pcm/channel_if.m \
258    dev/sound/pcm/feeder_if.m dev/sound/pcm/mixer_if.m pci/agp_if.m \
259    opencrypto/crypto_if.m pc98/pc98/canbus_if.m dev/uart/uart_if.m
260
261.for _srcsrc in ${MFILES}
262.for _ext in c h
263.for _src in ${SRCS:M${_srcsrc:T:R}.${_ext}}
264CLEANFILES+=	${_src}
265.if !target(${_src})
266.if !exists(@)
267${_src}: @
268.endif
269.if exists(@)
270${_src}: @/tools/makeobjops.awk @/${_srcsrc}
271.endif
272	${AWK} -f @/tools/makeobjops.awk @/${_srcsrc} -${_ext}
273.endif
274.endfor # _src
275.endfor # _ext
276.endfor # _srcsrc
277
278.for _ext in c h
279.if ${SRCS:Mvnode_if.${_ext}} != ""
280CLEANFILES+=	vnode_if.${_ext}
281.if !exists(@)
282vnode_if.${_ext}: @
283.endif
284.if exists(@)
285vnode_if.${_ext}: @/tools/vnode_if.awk @/kern/vnode_if.src
286.endif
287	${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -${_ext}
288.endif
289.endfor
290
291.if ${SRCS:Mmiidevs.h} != ""
292CLEANFILES+=	miidevs.h
293.if !exists(@)
294miidevs.h: @
295.endif
296.if exists(@)
297miidevs.h: @/tools/devlist2h.awk @/dev/mii/miidevs
298.endif
299	${AWK} -f @/tools/devlist2h.awk @/dev/mii/miidevs
300.endif
301
302regress:
303
304lint: ${SRCS}
305	${LINT} ${LINTKERNFLAGS} ${CFLAGS:M-[DILU]*} ${.ALLSRC:M*.c}
306
307.include <bsd.dep.mk>
308
309.if !exists(${.OBJDIR}/${DEPENDFILE})
310${OBJS}: ${SRCS:M*.h}
311.endif
312
313.include <bsd.obj.mk>
314.include "kern.mk"
315