kmod.mk revision 122837 
1#	From: @(#)bsd.prog.mk	5.26 (Berkeley) 6/25/91
2# $FreeBSD: head/sys/conf/kmod.mk 122837 2003-11-17 05:21:18Z imp $
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.if defined(KERNBUILDDIR)
83CFLAGS+=       -include ${KERNBUILDDIR}/opt_global.h
84.endif
85
86# Add -I paths for system headers.  Individual KLD makefiles don't
87# need any -I paths for this.  Similar defaults for .PATH can't be
88# set because there are no standard paths for non-headers.
89CFLAGS+=	-I. -I@
90
91# Add a -I path to standard headers like <stddef.h>.  Use a relative
92# path to src/include if possible.  If the @ symlink hasn't been built
93# yet, then we can't tell if the relative path exists.  Add both the
94# potential relative path and an absolute path in that case.
95.if exists(@)
96.if exists(@/../include)
97CFLAGS+=	-I@/../include
98.else
99CFLAGS+=	-I${DESTDIR}/usr/include
100.endif
101.else # !@
102CFLAGS+=	-I@/../include -I${DESTDIR}/usr/include
103.endif # @
104
105CFLAGS+=	-finline-limit=${INLINE_LIMIT}
106
107# Disallow common variables, and if we end up with commons from
108# somewhere unexpected, allocate storage for them in the module itself.
109CFLAGS+=	-fno-common
110LDFLAGS+=	-d -warn-common
111
112CFLAGS+=	${DEBUG_FLAGS}
113
114OBJS+=  ${SRCS:N*.h:R:S/$/.o/g}
115
116.if !defined(PROG)
117PROG=	${KMOD}.ko
118.endif
119
120.if !defined(DEBUG)
121FULLPROG=	${PROG}
122.else
123FULLPROG=	${PROG}.debug
124${PROG}: ${FULLPROG}
125	${OBJCOPY} --strip-debug ${FULLPROG} ${PROG}
126.endif
127
128${FULLPROG}: ${KMOD}.kld
129	${LD} -Bshareable ${LDFLAGS} -o ${.TARGET} ${KMOD}.kld
130
131EXPORT_SYMS?=	NO
132.if ${EXPORT_SYMS} != YES
133CLEANFILES+=	${.OBJDIR}/export_syms
134.endif
135
136${KMOD}.kld: ${OBJS}
137	${LD} ${LDFLAGS} -r -d -o ${.TARGET} ${OBJS}
138.if defined(EXPORT_SYMS)
139.if ${EXPORT_SYMS} != YES
140.if ${EXPORT_SYMS} == NO
141	touch ${.OBJDIR}/export_syms
142.elif !exists(${.CURDIR}/${EXPORT_SYMS})
143	echo ${EXPORT_SYMS} > ${.OBJDIR}/export_syms
144.else
145	grep -v '^#' < ${EXPORT_SYMS} >  ${.OBJDIR}/export_syms
146.endif
147	awk -f ${SYSDIR}/conf/kmod_syms.awk ${.TARGET} \
148		${.OBJDIR}/export_syms | \
149	xargs -J% ${OBJCOPY} % ${.TARGET}
150.endif
151.endif
152
153_ILINKS=@ machine
154
155all: objwarn ${PROG}
156
157beforedepend: ${_ILINKS}
158	@rm -f .depend
159
160# Ensure that the links exist without depending on it when it exists which
161# causes all the modules to be rebuilt when the directory pointed to changes.
162.for _link in ${_ILINKS}
163.if !exists(${.OBJDIR}/${_link})
164${OBJS}: ${_link}
165.endif
166.endfor
167
168# Search for kernel source tree in standard places.
169.for _dir in ${.CURDIR}/../.. ${.CURDIR}/../../.. /sys /usr/src/sys
170.if !defined(SYSDIR) && exists(${_dir}/kern)
171SYSDIR=	${_dir}
172.endif
173.endfor
174.if !defined(SYSDIR) || !exists(${SYSDIR}/kern)
175.error "can't find kernel source tree"
176.endif
177
178${_ILINKS}:
179	@case ${.TARGET} in \
180	machine) \
181		path=${SYSDIR}/${MACHINE_ARCH}/include ;; \
182	@) \
183		path=${SYSDIR} ;; \
184	esac ; \
185	path=`(cd $$path && /bin/pwd)` ; \
186	${ECHO} ${.TARGET} "->" $$path ; \
187	ln -s $$path ${.TARGET}
188
189CLEANFILES+= ${PROG} ${KMOD}.kld ${OBJS} ${_ILINKS} symb.tmp tmp.o
190
191.if defined(DEBUG)
192CLEANFILES+= ${FULLPROG}
193.endif
194
195.if !target(install)
196
197_INSTALLFLAGS:=	${INSTALLFLAGS}
198.for ie in ${INSTALLFLAGS_EDIT}
199_INSTALLFLAGS:=	${_INSTALLFLAGS${ie}}
200.endfor
201
202.if defined(DEBUG)
203install.debug:
204	cd ${.CURDIR}; ${MAKE} -DINSTALL_DEBUG install
205.endif
206
207.if !target(realinstall)
208realinstall: _kmodinstall
209.ORDER: beforeinstall _kmodinstall
210.if defined(DEBUG) && defined(INSTALL_DEBUG)
211_kmodinstall:
212	${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
213	    ${_INSTALLFLAGS} ${FULLPROG} ${DESTDIR}${KMODDIR}
214.else
215_kmodinstall:
216	${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
217	    ${_INSTALLFLAGS} ${PROG} ${DESTDIR}${KMODDIR}
218
219.include <bsd.links.mk>
220
221.if !defined(NO_XREF)
222afterinstall: _kldxref
223.ORDER: realinstall _kldxref
224.ORDER: _installlinks _kldxref
225_kldxref:
226	@if type kldxref >/dev/null 2>&1; then \
227		${ECHO} kldxref ${DESTDIR}${KMODDIR}; \
228		kldxref ${DESTDIR}${KMODDIR}; \
229	fi
230.endif
231.endif
232.endif !target(realinstall)
233
234.endif !target(install)
235
236.if !target(load)
237load:	${PROG}
238	${KMODLOAD} -v ${.OBJDIR}/${KMOD}.ko
239.endif
240
241.if !target(unload)
242unload:
243	${KMODUNLOAD} -v ${KMOD}
244.endif
245
246.if defined(KERNBUILDDIR)
247.PATH: ${KERNBUILDDIR}
248CFLAGS += -I${KERNBUILDDIR}
249.for _src in ${SRCS:Mopt_*.h}
250CLEANFILES+=	${_src}
251.if !target(${_src})
252${_src}:
253	-@ln -s ${KERNBUILDDIR}/${_src} ${.TARGET}
254.endif
255.endfor
256.else
257.for _src in ${SRCS:Mopt_*.h}
258CLEANFILES+=	${_src}
259.if !target(${_src})
260${_src}:
261	touch ${.TARGET}
262.endif
263.endfor
264.endif
265
266MFILES?= kern/bus_if.m kern/device_if.m dev/iicbus/iicbb_if.m \
267    dev/iicbus/iicbus_if.m isa/isa_if.m \
268    libkern/iconv_converter_if.m \
269    dev/mii/miibus_if.m \
270    dev/pccard/card_if.m dev/pccard/power_if.m dev/pci/pci_if.m \
271    dev/pci/pcib_if.m dev/ppbus/ppbus_if.m dev/smbus/smbus_if.m \
272    dev/usb/usb_if.m dev/sound/pcm/ac97_if.m dev/sound/pcm/channel_if.m \
273    dev/sound/pcm/feeder_if.m dev/sound/pcm/mixer_if.m pci/agp_if.m \
274    opencrypto/crypto_if.m pc98/pc98/canbus_if.m dev/uart/uart_if.m
275
276.for _srcsrc in ${MFILES}
277.for _ext in c h
278.for _src in ${SRCS:M${_srcsrc:T:R}.${_ext}}
279CLEANFILES+=	${_src}
280.if !target(${_src})
281.if !exists(@)
282${_src}: @
283.endif
284.if exists(@)
285${_src}: @/tools/makeobjops.awk @/${_srcsrc}
286.endif
287	${AWK} -f @/tools/makeobjops.awk @/${_srcsrc} -${_ext}
288.endif
289.endfor # _src
290.endfor # _ext
291.endfor # _srcsrc
292
293.for _ext in c h
294.if ${SRCS:Mvnode_if.${_ext}} != ""
295CLEANFILES+=	vnode_if.${_ext}
296.if !exists(@)
297vnode_if.${_ext}: @
298.endif
299.if exists(@)
300vnode_if.${_ext}: @/tools/vnode_if.awk @/kern/vnode_if.src
301.endif
302	${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -${_ext}
303.endif
304.endfor
305
306.if ${SRCS:Mmiidevs.h} != ""
307CLEANFILES+=	miidevs.h
308.if !exists(@)
309miidevs.h: @
310.endif
311.if exists(@)
312miidevs.h: @/tools/devlist2h.awk @/dev/mii/miidevs
313.endif
314	${AWK} -f @/tools/devlist2h.awk @/dev/mii/miidevs
315.endif
316
317regress:
318
319lint: ${SRCS}
320	${LINT} ${LINTKERNFLAGS} ${CFLAGS:M-[DILU]*} ${.ALLSRC:M*.c}
321
322.include <bsd.dep.mk>
323
324.if !exists(${.OBJDIR}/${DEPENDFILE})
325${OBJS}: ${SRCS:M*.h}
326.endif
327
328.include <bsd.obj.mk>
329.include "kern.mk"
330