kmod.mk revision 122786 
1#	From: @(#)bsd.prog.mk	5.26 (Berkeley) 6/25/91
2# $FreeBSD: head/sys/conf/kmod.mk 122786 2003-11-16 07:50:14Z green $
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)
83.for _optfile in global ddb
84CFLAGS+=       -include ${KERNBUILDDIR}/opt_${_optfile}.h
85.endfor
86.endif
87
88# Add -I paths for system headers.  Individual KLD makefiles don't
89# need any -I paths for this.  Similar defaults for .PATH can't be
90# set because there are no standard paths for non-headers.
91CFLAGS+=	-I. -I@
92
93# Add a -I path to standard headers like <stddef.h>.  Use a relative
94# path to src/include if possible.  If the @ symlink hasn't been built
95# yet, then we can't tell if the relative path exists.  Add both the
96# potential relative path and an absolute path in that case.
97.if exists(@)
98.if exists(@/../include)
99CFLAGS+=	-I@/../include
100.else
101CFLAGS+=	-I${DESTDIR}/usr/include
102.endif
103.else # !@
104CFLAGS+=	-I@/../include -I${DESTDIR}/usr/include
105.endif # @
106
107CFLAGS+=	-finline-limit=${INLINE_LIMIT}
108
109# Disallow common variables, and if we end up with commons from
110# somewhere unexpected, allocate storage for them in the module itself.
111CFLAGS+=	-fno-common
112LDFLAGS+=	-d -warn-common
113
114CFLAGS+=	${DEBUG_FLAGS}
115
116OBJS+=  ${SRCS:N*.h:R:S/$/.o/g}
117
118.if !defined(PROG)
119PROG=	${KMOD}.ko
120.endif
121
122.if !defined(DEBUG)
123FULLPROG=	${PROG}
124.else
125FULLPROG=	${PROG}.debug
126${PROG}: ${FULLPROG}
127	${OBJCOPY} --strip-debug ${FULLPROG} ${PROG}
128.endif
129
130${FULLPROG}: ${KMOD}.kld
131	${LD} -Bshareable ${LDFLAGS} -o ${.TARGET} ${KMOD}.kld
132
133EXPORT_SYMS?=	NO
134.if ${EXPORT_SYMS} != YES
135CLEANFILES+=	${.OBJDIR}/export_syms
136.endif
137
138${KMOD}.kld: ${OBJS}
139	${LD} ${LDFLAGS} -r -d -o ${.TARGET} ${OBJS}
140.if defined(EXPORT_SYMS)
141.if ${EXPORT_SYMS} != YES
142.if ${EXPORT_SYMS} == NO
143	touch ${.OBJDIR}/export_syms
144.elif !exists(${.CURDIR}/${EXPORT_SYMS})
145	echo ${EXPORT_SYMS} > ${.OBJDIR}/export_syms
146.else
147	grep -v '^#' < ${EXPORT_SYMS} >  ${.OBJDIR}/export_syms
148.endif
149	awk -f ${SYSDIR}/conf/kmod_syms.awk ${.TARGET} \
150		${.OBJDIR}/export_syms | \
151	xargs -J% ${OBJCOPY} % ${.TARGET}
152.endif
153.endif
154
155_ILINKS=@ machine
156
157all: objwarn ${PROG}
158
159beforedepend: ${_ILINKS}
160	@rm -f .depend
161
162# Ensure that the links exist without depending on it when it exists which
163# causes all the modules to be rebuilt when the directory pointed to changes.
164.for _link in ${_ILINKS}
165.if !exists(${.OBJDIR}/${_link})
166${OBJS}: ${_link}
167.endif
168.endfor
169
170# Search for kernel source tree in standard places.
171.for _dir in ${.CURDIR}/../.. ${.CURDIR}/../../.. /sys /usr/src/sys
172.if !defined(SYSDIR) && exists(${_dir}/kern)
173SYSDIR=	${_dir}
174.endif
175.endfor
176.if !defined(SYSDIR) || !exists(${SYSDIR}/kern)
177.error "can't find kernel source tree"
178.endif
179
180${_ILINKS}:
181	@case ${.TARGET} in \
182	machine) \
183		path=${SYSDIR}/${MACHINE_ARCH}/include ;; \
184	@) \
185		path=${SYSDIR} ;; \
186	esac ; \
187	path=`(cd $$path && /bin/pwd)` ; \
188	${ECHO} ${.TARGET} "->" $$path ; \
189	ln -s $$path ${.TARGET}
190
191CLEANFILES+= ${PROG} ${KMOD}.kld ${OBJS} ${_ILINKS} symb.tmp tmp.o
192
193.if defined(DEBUG)
194CLEANFILES+= ${FULLPROG}
195.endif
196
197.if !target(install)
198
199_INSTALLFLAGS:=	${INSTALLFLAGS}
200.for ie in ${INSTALLFLAGS_EDIT}
201_INSTALLFLAGS:=	${_INSTALLFLAGS${ie}}
202.endfor
203
204.if defined(DEBUG)
205install.debug:
206	cd ${.CURDIR}; ${MAKE} -DINSTALL_DEBUG install
207.endif
208
209.if !target(realinstall)
210realinstall: _kmodinstall
211.ORDER: beforeinstall _kmodinstall
212.if defined(DEBUG) && defined(INSTALL_DEBUG)
213_kmodinstall:
214	${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
215	    ${_INSTALLFLAGS} ${FULLPROG} ${DESTDIR}${KMODDIR}
216.else
217_kmodinstall:
218	${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
219	    ${_INSTALLFLAGS} ${PROG} ${DESTDIR}${KMODDIR}
220
221.include <bsd.links.mk>
222
223.if !defined(NO_XREF)
224afterinstall: _kldxref
225.ORDER: realinstall _kldxref
226.ORDER: _installlinks _kldxref
227_kldxref:
228	@if type kldxref >/dev/null 2>&1; then \
229		${ECHO} kldxref ${DESTDIR}${KMODDIR}; \
230		kldxref ${DESTDIR}${KMODDIR}; \
231	fi
232.endif
233.endif
234.endif !target(realinstall)
235
236.endif !target(install)
237
238.if !target(load)
239load:	${PROG}
240	${KMODLOAD} -v ${.OBJDIR}/${KMOD}.ko
241.endif
242
243.if !target(unload)
244unload:
245	${KMODUNLOAD} -v ${KMOD}
246.endif
247
248.if defined(KERNBUILDDIR)
249.PATH: ${KERNBUILDDIR}
250CFLAGS += -I${KERNBUILDDIR}
251.for _src in ${SRCS:Mopt_*.h}
252CLEANFILES+=	${_src}
253.if !target(${_src})
254${_src}:
255	ln -s ${KERNBUILDDIR}/${_src} ${.TARGET}
256.endif
257.endfor
258.else
259.for _src in ${SRCS:Mopt_*.h}
260CLEANFILES+=	${_src}
261.if !target(${_src})
262${_src}:
263	touch ${.TARGET}
264.endif
265.endfor
266.endif
267
268MFILES?= kern/bus_if.m kern/device_if.m dev/iicbus/iicbb_if.m \
269    dev/iicbus/iicbus_if.m isa/isa_if.m \
270    libkern/iconv_converter_if.m \
271    dev/mii/miibus_if.m \
272    dev/pccard/card_if.m dev/pccard/power_if.m dev/pci/pci_if.m \
273    dev/pci/pcib_if.m dev/ppbus/ppbus_if.m dev/smbus/smbus_if.m \
274    dev/usb/usb_if.m dev/sound/pcm/ac97_if.m dev/sound/pcm/channel_if.m \
275    dev/sound/pcm/feeder_if.m dev/sound/pcm/mixer_if.m pci/agp_if.m \
276    opencrypto/crypto_if.m pc98/pc98/canbus_if.m dev/uart/uart_if.m
277
278.for _srcsrc in ${MFILES}
279.for _ext in c h
280.for _src in ${SRCS:M${_srcsrc:T:R}.${_ext}}
281CLEANFILES+=	${_src}
282.if !target(${_src})
283.if !exists(@)
284${_src}: @
285.endif
286.if exists(@)
287${_src}: @/tools/makeobjops.awk @/${_srcsrc}
288.endif
289	${AWK} -f @/tools/makeobjops.awk @/${_srcsrc} -${_ext}
290.endif
291.endfor # _src
292.endfor # _ext
293.endfor # _srcsrc
294
295.for _ext in c h
296.if ${SRCS:Mvnode_if.${_ext}} != ""
297CLEANFILES+=	vnode_if.${_ext}
298.if !exists(@)
299vnode_if.${_ext}: @
300.endif
301.if exists(@)
302vnode_if.${_ext}: @/tools/vnode_if.awk @/kern/vnode_if.src
303.endif
304	${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -${_ext}
305.endif
306.endfor
307
308.if ${SRCS:Mmiidevs.h} != ""
309CLEANFILES+=	miidevs.h
310.if !exists(@)
311miidevs.h: @
312.endif
313.if exists(@)
314miidevs.h: @/tools/devlist2h.awk @/dev/mii/miidevs
315.endif
316	${AWK} -f @/tools/devlist2h.awk @/dev/mii/miidevs
317.endif
318
319regress:
320
321lint: ${SRCS}
322	${LINT} ${LINTKERNFLAGS} ${CFLAGS:M-[DILU]*} ${.ALLSRC:M*.c}
323
324.include <bsd.dep.mk>
325
326.if !exists(${.OBJDIR}/${DEPENDFILE})
327${OBJS}: ${SRCS:M*.h}
328.endif
329
330.include <bsd.obj.mk>
331.include "kern.mk"
332