kmod.mk revision 125770 
1#	From: @(#)bsd.prog.mk	5.26 (Berkeley) 6/25/91
2# $FreeBSD: head/sys/conf/kmod.mk 125770 2004-02-13 09:39:45Z ru $
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
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.if !defined(DEBUG)
131	${OBJCOPY} --strip-debug ${FULLPROG}
132.endif
133
134EXPORT_SYMS?=	NO
135.if ${EXPORT_SYMS} != YES
136CLEANFILES+=	${.OBJDIR}/export_syms
137.endif
138
139${KMOD}.kld: ${OBJS}
140	${LD} ${LDFLAGS} -r -d -o ${.TARGET} ${OBJS}
141.if defined(EXPORT_SYMS)
142.if ${EXPORT_SYMS} != YES
143.if ${EXPORT_SYMS} == NO
144	touch ${.OBJDIR}/export_syms
145.elif !exists(${.CURDIR}/${EXPORT_SYMS})
146	echo ${EXPORT_SYMS} > ${.OBJDIR}/export_syms
147.else
148	grep -v '^#' < ${EXPORT_SYMS} >  ${.OBJDIR}/export_syms
149.endif
150	awk -f ${SYSDIR}/conf/kmod_syms.awk ${.TARGET} \
151		${.OBJDIR}/export_syms | \
152	xargs -J% ${OBJCOPY} % ${.TARGET}
153.endif
154.endif
155
156_ILINKS=@ machine
157
158all: objwarn ${PROG}
159
160beforedepend: ${_ILINKS}
161	@rm -f .depend
162
163# Ensure that the links exist without depending on it when it exists which
164# causes all the modules to be rebuilt when the directory pointed to changes.
165.for _link in ${_ILINKS}
166.if !exists(${.OBJDIR}/${_link})
167${OBJS}: ${_link}
168.endif
169.endfor
170
171# Search for kernel source tree in standard places.
172.for _dir in ${.CURDIR}/../.. ${.CURDIR}/../../.. /sys /usr/src/sys
173.if !defined(SYSDIR) && exists(${_dir}/kern)
174SYSDIR=	${_dir}
175.endif
176.endfor
177.if !defined(SYSDIR) || !exists(${SYSDIR}/kern)
178.error "can't find kernel source tree"
179.endif
180
181${_ILINKS}:
182	@case ${.TARGET} in \
183	machine) \
184		path=${SYSDIR}/${MACHINE_ARCH}/include ;; \
185	@) \
186		path=${SYSDIR} ;; \
187	esac ; \
188	path=`(cd $$path && /bin/pwd)` ; \
189	${ECHO} ${.TARGET} "->" $$path ; \
190	ln -s $$path ${.TARGET}
191
192CLEANFILES+= ${PROG} ${KMOD}.kld ${OBJS} ${_ILINKS} symb.tmp tmp.o
193
194.if defined(DEBUG)
195CLEANFILES+= ${FULLPROG}
196.endif
197
198.if !target(install)
199
200_INSTALLFLAGS:=	${INSTALLFLAGS}
201.for ie in ${INSTALLFLAGS_EDIT}
202_INSTALLFLAGS:=	${_INSTALLFLAGS${ie}}
203.endfor
204
205.if defined(DEBUG)
206install.debug:
207	cd ${.CURDIR}; ${MAKE} -DINSTALL_DEBUG install
208.endif
209
210.if !target(realinstall)
211realinstall: _kmodinstall
212.ORDER: beforeinstall _kmodinstall
213.if defined(DEBUG) && defined(INSTALL_DEBUG)
214_kmodinstall:
215	${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
216	    ${_INSTALLFLAGS} ${FULLPROG} ${DESTDIR}${KMODDIR}
217.else
218_kmodinstall:
219	${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
220	    ${_INSTALLFLAGS} ${PROG} ${DESTDIR}${KMODDIR}
221
222.include <bsd.links.mk>
223
224.if !defined(NO_XREF)
225afterinstall: _kldxref
226.ORDER: realinstall _kldxref
227.ORDER: _installlinks _kldxref
228_kldxref:
229	@if type kldxref >/dev/null 2>&1; then \
230		${ECHO} kldxref ${DESTDIR}${KMODDIR}; \
231		kldxref ${DESTDIR}${KMODDIR}; \
232	fi
233.endif
234.endif
235.endif !target(realinstall)
236
237.endif !target(install)
238
239.if !target(load)
240load:	${PROG}
241	${KMODLOAD} -v ${.OBJDIR}/${KMOD}.ko
242.endif
243
244.if !target(unload)
245unload:
246	${KMODUNLOAD} -v ${KMOD}
247.endif
248
249.if defined(KERNBUILDDIR)
250.PATH: ${KERNBUILDDIR}
251CFLAGS += -I${KERNBUILDDIR}
252.for _src in ${SRCS:Mopt_*.h}
253CLEANFILES+=	${_src}
254.if !target(${_src})
255${_src}:
256	ln -s ${KERNBUILDDIR}/${_src} ${.TARGET}
257.endif
258.endfor
259.else
260.for _src in ${SRCS:Mopt_*.h}
261CLEANFILES+=	${_src}
262.if !target(${_src})
263${_src}:
264	touch ${.TARGET}
265.endif
266.endfor
267.endif
268
269MFILES?= kern/bus_if.m kern/device_if.m dev/iicbus/iicbb_if.m \
270    dev/iicbus/iicbus_if.m isa/isa_if.m \
271    libkern/iconv_converter_if.m \
272    dev/mii/miibus_if.m \
273    dev/pccard/card_if.m dev/pccard/power_if.m dev/pci/pci_if.m \
274    dev/pci/pcib_if.m dev/ppbus/ppbus_if.m dev/smbus/smbus_if.m \
275    dev/usb/usb_if.m dev/sound/pcm/ac97_if.m dev/sound/pcm/channel_if.m \
276    dev/sound/pcm/feeder_if.m dev/sound/pcm/mixer_if.m pci/agp_if.m \
277    opencrypto/crypto_if.m pc98/pc98/canbus_if.m dev/uart/uart_if.m
278
279.for _srcsrc in ${MFILES}
280.for _ext in c h
281.for _src in ${SRCS:M${_srcsrc:T:R}.${_ext}}
282CLEANFILES+=	${_src}
283.if !target(${_src})
284.if !exists(@)
285${_src}: @
286.endif
287.if exists(@)
288${_src}: @/tools/makeobjops.awk @/${_srcsrc}
289.endif
290	${AWK} -f @/tools/makeobjops.awk @/${_srcsrc} -${_ext}
291.endif
292.endfor # _src
293.endfor # _ext
294.endfor # _srcsrc
295
296.for _ext in c h
297.if ${SRCS:Mvnode_if.${_ext}} != ""
298CLEANFILES+=	vnode_if.${_ext}
299.if !exists(@)
300vnode_if.${_ext}: @
301.endif
302.if exists(@)
303vnode_if.${_ext}: @/tools/vnode_if.awk @/kern/vnode_if.src
304.endif
305	${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -${_ext}
306.endif
307.endfor
308
309.if ${SRCS:Mmiidevs.h} != ""
310CLEANFILES+=	miidevs.h
311.if !exists(@)
312miidevs.h: @
313.endif
314.if exists(@)
315miidevs.h: @/tools/devlist2h.awk @/dev/mii/miidevs
316.endif
317	${AWK} -f @/tools/devlist2h.awk @/dev/mii/miidevs
318.endif
319
320regress:
321
322lint: ${SRCS}
323	${LINT} ${LINTKERNFLAGS} ${CFLAGS:M-[DILU]*} ${.ALLSRC:M*.c}
324
325.include <bsd.dep.mk>
326
327.if !exists(${.OBJDIR}/${DEPENDFILE})
328${OBJS}: ${SRCS:M*.h}
329.endif
330
331.include <bsd.obj.mk>
332.include "kern.mk"
333