kmod.mk revision 118036 
1#	From: @(#)bsd.prog.mk	5.26 (Berkeley) 6/25/91
2# $FreeBSD: head/sys/conf/kmod.mk 118036 2003-07-26 02:27:50Z 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} ${_ICFLAGS}
82
83# Add -I paths for system headers.  Individual KLD makefiles don't
84# need any -I paths for this.  Similar defaults for .PATH can't be
85# set because there are no standard paths for non-headers.
86CFLAGS+=	-I. -I@ -I@/dev
87
88# Add a -I path to standard headers like <stddef.h>.  Use a relative
89# path to src/include if possible.  If the @ symlink hasn't been built
90# yet, then we can't tell if the relative path exists.  Add both the
91# potential relative path and an absolute path in that case.
92.if exists(@)
93.if exists(@/../include)
94CFLAGS+=	-I@/../include
95.else
96CFLAGS+=	-I${DESTDIR}/usr/include
97.endif
98.else # !@
99CFLAGS+=	-I@/../include -I${DESTDIR}/usr/include
100.endif # @
101
102INLINE_LIMIT?=	15000
103CFLAGS+=	-finline-limit=${INLINE_LIMIT}
104
105# Disallow common variables, and if we end up with commons from
106# somewhere unexpected, allocate storage for them in the module itself.
107CFLAGS+=	-fno-common
108LDFLAGS+=	-d -warn-common
109
110CFLAGS+=	${DEBUG_FLAGS}
111
112OBJS+=  ${SRCS:N*.h:R:S/$/.o/g}
113
114.if !defined(PROG)
115PROG=	${KMOD}.ko
116.endif
117
118.if !defined(DEBUG)
119FULLPROG=	${PROG}
120.else
121FULLPROG=	${PROG}.debug
122${PROG}: ${FULLPROG}
123	${OBJCOPY} --strip-debug ${FULLPROG} ${PROG}
124.endif
125
126${FULLPROG}: ${KMOD}.kld
127	${LD} -Bshareable ${LDFLAGS} -o ${.TARGET} ${KMOD}.kld
128
129EXPORT_SYMS?=	NO
130.if ${EXPORT_SYMS} != YES
131CLEANFILES+=	${.OBJDIR}/export_syms
132.endif
133
134${KMOD}.kld: ${OBJS}
135	${LD} ${LDFLAGS} -r -d -o ${.TARGET} ${OBJS}
136.if defined(EXPORT_SYMS)
137.if ${EXPORT_SYMS} != YES
138.if ${EXPORT_SYMS} == NO
139	touch ${.OBJDIR}/export_syms
140.elif !exists(${.CURDIR}/${EXPORT_SYMS})
141	echo ${EXPORT_SYMS} > ${.OBJDIR}/export_syms
142.else
143	grep -v '^#' < ${EXPORT_SYMS} >  ${.OBJDIR}/export_syms
144.endif
145	awk -f ${SYSDIR}/conf/kmod_syms.awk ${.TARGET} \
146		${.OBJDIR}/export_syms | \
147	xargs -J% ${OBJCOPY} % ${.TARGET}
148.endif
149.endif
150
151_ILINKS=@ machine
152
153all: objwarn ${PROG}
154
155beforedepend: ${_ILINKS}
156	@rm -f .depend
157
158# Ensure that the links exist without depending on it when it exists which
159# causes all the modules to be rebuilt when the directory pointed to changes.
160.for _link in ${_ILINKS}
161.if !exists(${.OBJDIR}/${_link})
162${OBJS}: ${_link}
163.endif
164.endfor
165
166# Search for kernel source tree in standard places.
167.for _dir in ${.CURDIR}/../.. ${.CURDIR}/../../.. /sys /usr/src/sys
168.if !defined(SYSDIR) && exists(${_dir}/kern/)
169SYSDIR=	${_dir}
170.endif
171.endfor
172.if !defined(SYSDIR) || !exists(${SYSDIR}/kern)
173.error "can't find kernel source tree"
174.endif
175
176${_ILINKS}:
177	@case ${.TARGET} in \
178	machine) \
179		path=${SYSDIR}/${MACHINE_ARCH}/include ;; \
180	@) \
181		path=${SYSDIR} ;; \
182	esac ; \
183	path=`(cd $$path && /bin/pwd)` ; \
184	${ECHO} ${.TARGET} "->" $$path ; \
185	ln -s $$path ${.TARGET}
186
187CLEANFILES+= ${PROG} ${KMOD}.kld ${OBJS} ${_ILINKS} symb.tmp tmp.o
188
189.if defined(DEBUG)
190CLEANFILES+= ${FULLPROG}
191.endif
192
193.if !target(install)
194
195_INSTALLFLAGS:=	${INSTALLFLAGS}
196.for ie in ${INSTALLFLAGS_EDIT}
197_INSTALLFLAGS:=	${_INSTALLFLAGS${ie}}
198.endfor
199
200.if defined(DEBUG)
201install.debug:
202	cd ${.CURDIR}; ${MAKE} -DINSTALL_DEBUG install
203.endif
204
205.if !target(realinstall)
206realinstall: _kmodinstall
207.ORDER: beforeinstall _kmodinstall
208.if defined(DEBUG) && defined(INSTALL_DEBUG)
209_kmodinstall:
210	${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
211	    ${_INSTALLFLAGS} ${FULLPROG} ${DESTDIR}${KMODDIR}
212.else
213_kmodinstall:
214	${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
215	    ${_INSTALLFLAGS} ${PROG} ${DESTDIR}${KMODDIR}
216
217.include <bsd.links.mk>
218
219.if !defined(NO_XREF)
220afterinstall: _kldxref
221.ORDER: realinstall _kldxref
222.ORDER: _installlinks _kldxref
223_kldxref:
224	@if type kldxref >/dev/null 2>&1; then \
225		${ECHO} kldxref ${DESTDIR}${KMODDIR}; \
226		kldxref ${DESTDIR}${KMODDIR}; \
227	fi
228.endif
229.endif
230.endif !target(realinstall)
231
232.endif !target(install)
233
234.if !target(load)
235load:	${PROG}
236	${KMODLOAD} -v ${.OBJDIR}/${KMOD}.ko
237.endif
238
239.if !target(unload)
240unload:
241	${KMODUNLOAD} -v ${KMOD}
242.endif
243
244.for _src in ${SRCS:Mopt_*.h}
245CLEANFILES+=	${_src}
246.if !target(${_src})
247${_src}:
248	touch ${.TARGET}
249.endif
250.endfor
251
252MFILES?= kern/bus_if.m kern/device_if.m dev/iicbus/iicbb_if.m \
253    dev/iicbus/iicbus_if.m isa/isa_if.m \
254    libkern/iconv_converter_if.m \
255    dev/mii/miibus_if.m \
256    dev/pccard/card_if.m dev/pccard/power_if.m dev/pci/pci_if.m \
257    dev/pci/pcib_if.m dev/ppbus/ppbus_if.m dev/smbus/smbus_if.m \
258    dev/usb/usb_if.m dev/sound/pcm/ac97_if.m dev/sound/pcm/channel_if.m \
259    dev/sound/pcm/feeder_if.m dev/sound/pcm/mixer_if.m pci/agp_if.m \
260    opencrypto/crypto_if.m pc98/pc98/canbus_if.m
261
262.for _srcsrc in ${MFILES}
263.for _ext in c h
264.for _src in ${SRCS:M${_srcsrc:T:R}.${_ext}}
265CLEANFILES+=	${_src}
266.if !target(${_src})
267.if !exists(@)
268${_src}: @
269.endif
270.if exists(@)
271${_src}: @/tools/makeobjops.awk @/${_srcsrc}
272.endif
273	${AWK} -f @/tools/makeobjops.awk @/${_srcsrc} -${_ext}
274.endif
275.endfor # _src
276.endfor # _ext
277.endfor # _srcsrc
278
279.for _ext in c h
280.if ${SRCS:Mvnode_if.${_ext}} != ""
281CLEANFILES+=	vnode_if.${_ext}
282.if !exists(@)
283vnode_if.${_ext}: @
284.endif
285.if exists(@)
286vnode_if.${_ext}: @/tools/vnode_if.awk @/kern/vnode_if.src
287.endif
288	${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -${_ext}
289.endif
290.endfor
291
292.if ${SRCS:Mmiidevs.h} != ""
293CLEANFILES+=	miidevs.h
294.if !exists(@)
295miidevs.h: @
296.endif
297.if exists(@)
298miidevs.h: @/tools/devlist2h.awk @/dev/mii/miidevs
299.endif
300	${AWK} -f @/tools/devlist2h.awk @/dev/mii/miidevs
301.endif
302
303regress:
304
305lint: ${SRCS}
306	${LINT} ${LINTKERNFLAGS} ${CFLAGS:M-[DILU]*} ${.ALLSRC:M*.c}
307
308.include <bsd.dep.mk>
309
310.if !exists(${.OBJDIR}/${DEPENDFILE})
311${OBJS}: ${SRCS:M*.h}
312.endif
313
314.include <bsd.obj.mk>
315.include "kern.mk"
316