kmod.mk revision 100229 
1#	From: @(#)bsd.prog.mk	5.26 (Berkeley) 6/25/91
2# $FreeBSD: head/sys/conf/kmod.mk 100229 2002-07-17 08:21:50Z 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 ${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
102# Disallow common variables, and if we end up with commons from
103# somewhere unexpected, allocate storage for them in the module itself.
104CFLAGS+=	-fno-common
105LDFLAGS+=	-d -warn-common
106
107CFLAGS+=	${DEBUG_FLAGS}
108
109.if ${OBJFORMAT} == elf
110CLEANFILES+=	setdef0.c setdef1.c setdefs.h
111CLEANFILES+=	setdef0.o setdef1.o
112.endif
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} ${FULLPROG} ${KMOD}.kld ${OBJS} ${_ILINKS} symb.tmp tmp.o
190
191.if !target(install)
192
193_INSTALLFLAGS:=	${INSTALLFLAGS}
194.for ie in ${INSTALLFLAGS_EDIT}
195_INSTALLFLAGS:=	${_INSTALLFLAGS${ie}}
196.endfor
197
198.if defined(DEBUG)
199install.debug:
200	cd ${.CURDIR}; ${MAKE} -DINSTALL_DEBUG install
201.endif
202
203.if !target(realinstall)
204realinstall: _kmodinstall
205.ORDER: beforeinstall _kmodinstall
206.if defined(DEBUG) && defined(INSTALL_DEBUG)
207_kmodinstall:
208	${INSTALL} ${COPY} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
209	    ${_INSTALLFLAGS} ${FULLPROG} ${DESTDIR}${KMODDIR}
210.else
211_kmodinstall:
212	${INSTALL} ${COPY} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
213	    ${_INSTALLFLAGS} ${PROG} ${DESTDIR}${KMODDIR}
214
215.include <bsd.links.mk>
216
217.if !defined(NO_XREF)
218afterinstall: _kldxref
219.ORDER: realinstall _kldxref
220.ORDER: _installlinks _kldxref
221_kldxref:
222	@if type kldxref >/dev/null 2>&1; then \
223		${ECHO} kldxref ${DESTDIR}${KMODDIR}; \
224		kldxref ${DESTDIR}${KMODDIR}; \
225	fi
226.endif
227.endif
228.endif !target(realinstall)
229
230.endif !target(install)
231
232.if !target(load)
233load:	${PROG}
234	${KMODLOAD} -v ${.OBJDIR}/${KMOD}.ko
235.endif
236
237.if !target(unload)
238unload:
239	${KMODUNLOAD} -v ${KMOD}
240.endif
241
242.for _src in ${SRCS:Mopt_*.h}
243CLEANFILES+=	${_src}
244.if !target(${_src})
245${_src}:
246	touch ${.TARGET}
247.endif
248.endfor
249
250MFILES?= kern/bus_if.m kern/device_if.m dev/iicbus/iicbb_if.m \
251    dev/iicbus/iicbus_if.m isa/isa_if.m \
252    libkern/iconv_converter_if.m \
253    dev/mii/miibus_if.m \
254    dev/pccard/card_if.m dev/pccard/power_if.m dev/pci/pci_if.m \
255    dev/pci/pcib_if.m dev/ppbus/ppbus_if.m dev/smbus/smbus_if.m \
256    dev/usb/usb_if.m dev/sound/pcm/ac97_if.m dev/sound/pcm/channel_if.m \
257    dev/sound/pcm/feeder_if.m dev/sound/pcm/mixer_if.m pci/agp_if.m
258
259.for _srcsrc in ${MFILES}
260.for _ext in c h
261.for _src in ${SRCS:M${_srcsrc:T:R}.${_ext}}
262CLEANFILES+=	${_src}
263.if !target(${_src})
264.if !exists(@)
265${_src}: @
266.endif
267.if exists(@)
268${_src}: @/tools/makeobjops.awk @/${_srcsrc}
269.endif
270	${AWK} -f @/tools/makeobjops.awk @/${_srcsrc} -${_ext}
271.endif
272.endfor # _src
273.endfor # _ext
274.endfor # _srcsrc
275
276.for _ext in c h
277.if ${SRCS:Mvnode_if.${_ext}} != ""
278CLEANFILES+=	vnode_if.${_ext}
279.if !exists(@)
280vnode_if.${_ext}: @
281.endif
282.if exists(@)
283vnode_if.${_ext}: @/tools/vnode_if.awk @/kern/vnode_if.src
284.endif
285	${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -${_ext}
286.endif
287.endfor
288
289regress:
290
291lint: ${SRCS}
292	${LINT} ${LINTKERNFLAGS} ${CFLAGS:M-[DILU]*} ${.ALLSRC:M*.c}
293
294.include <bsd.dep.mk>
295
296.if !exists(${DEPENDFILE})
297${OBJS}: ${SRCS:M*.h}
298.endif
299
300.include <bsd.obj.mk>
301.include <bsd.kern.mk>
302