kmod.mk revision 130274 
1#	From: @(#)bsd.prog.mk	5.26 (Berkeley) 6/25/91
2# $FreeBSD: head/sys/conf/kmod.mk 130274 2004-06-09 16:08:20Z 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
73.if ${CC} == "icc"
74CFLAGS:=	${CFLAGS:C/(-x[^M^K^W]+)[MKW]+|-x[MKW]+/\1/}
75.endif
76CFLAGS+=	${COPTS} -D_KERNEL
77CFLAGS+=	-DKLD_MODULE
78
79# Don't use any standard or source-relative include directories.
80# Since -nostdinc will annull any previous -I paths, we repeat all
81# such paths after -nostdinc.  It doesn't seem to be possible to
82# add to the front of `make' variable.
83_ICFLAGS:=	${CFLAGS:M-I*}
84.if ${CC} == "icc"
85NOSTDINC=	-X
86.else
87NOSTDINC=	-nostdinc
88.endif
89CFLAGS+=	${NOSTDINC} -I- ${INCLMAGIC} ${_ICFLAGS}
90.if defined(KERNBUILDDIR)
91CFLAGS+=       -include ${KERNBUILDDIR}/opt_global.h
92.endif
93
94# Add -I paths for system headers.  Individual KLD makefiles don't
95# need any -I paths for this.  Similar defaults for .PATH can't be
96# set because there are no standard paths for non-headers.
97CFLAGS+=	-I. -I@
98
99# Add a -I path to standard headers like <stddef.h>.  Use a relative
100# path to src/include if possible.  If the @ symlink hasn't been built
101# yet, then we can't tell if the relative path exists.  Add both the
102# potential relative path and an absolute path in that case.
103.if exists(@)
104.if exists(@/../include)
105CFLAGS+=	-I@/../include
106.else
107CFLAGS+=	-I${DESTDIR}/usr/include
108.endif
109.else # !@
110CFLAGS+=	-I@/../include -I${DESTDIR}/usr/include
111.endif # @
112
113.if ${CC} != "icc"
114CFLAGS+=	-finline-limit=${INLINE_LIMIT}
115.endif
116
117# Disallow common variables, and if we end up with commons from
118# somewhere unexpected, allocate storage for them in the module itself.
119.if ${CC} != "icc"
120CFLAGS+=	-fno-common
121.endif
122LDFLAGS+=	-d -warn-common
123
124CFLAGS+=	${DEBUG_FLAGS}
125
126OBJS+=  ${SRCS:N*.h:R:S/$/.o/g}
127
128.if !defined(PROG)
129PROG=	${KMOD}.ko
130.endif
131
132.if !defined(DEBUG_FLAGS)
133FULLPROG=	${PROG}
134.else
135FULLPROG=	${PROG}.debug
136${PROG}: ${FULLPROG}
137	${OBJCOPY} --strip-debug ${FULLPROG} ${PROG}
138.endif
139
140.if ${MACHINE_ARCH} != amd64
141${FULLPROG}: ${KMOD}.kld
142	${LD} -Bshareable ${LDFLAGS} -o ${.TARGET} ${KMOD}.kld
143.if !defined(DEBUG_FLAGS)
144	${OBJCOPY} --strip-debug ${.TARGET}
145.endif
146.endif
147
148EXPORT_SYMS?=	NO
149.if ${EXPORT_SYMS} != YES
150CLEANFILES+=	${.OBJDIR}/export_syms
151.endif
152
153.if ${MACHINE_ARCH} != amd64
154${KMOD}.kld: ${OBJS}
155.else
156${FULLPROG}: ${OBJS}
157.endif
158	${LD} ${LDFLAGS} -r -d -o ${.TARGET} ${OBJS}
159.if defined(EXPORT_SYMS)
160.if ${EXPORT_SYMS} != YES
161.if ${EXPORT_SYMS} == NO
162	touch ${.OBJDIR}/export_syms
163.elif !exists(${.CURDIR}/${EXPORT_SYMS})
164	echo ${EXPORT_SYMS} > ${.OBJDIR}/export_syms
165.else
166	grep -v '^#' < ${EXPORT_SYMS} >  ${.OBJDIR}/export_syms
167.endif
168	awk -f ${SYSDIR}/conf/kmod_syms.awk ${.TARGET} \
169		${.OBJDIR}/export_syms | \
170	xargs -J% ${OBJCOPY} % ${.TARGET}
171.endif
172.endif
173.if !defined(DEBUG_FLAGS) && ${MACHINE_ARCH} == amd64
174	${OBJCOPY} --strip-debug ${.TARGET}
175.endif
176
177_ILINKS=@ machine
178
179all: objwarn ${PROG}
180
181beforedepend: ${_ILINKS}
182	@rm -f .depend
183
184# Ensure that the links exist without depending on it when it exists which
185# causes all the modules to be rebuilt when the directory pointed to changes.
186.for _link in ${_ILINKS}
187.if !exists(${.OBJDIR}/${_link})
188${OBJS}: ${_link}
189.endif
190.endfor
191
192# Search for kernel source tree in standard places.
193.for _dir in ${.CURDIR}/../.. ${.CURDIR}/../../.. /sys /usr/src/sys
194.if !defined(SYSDIR) && exists(${_dir}/kern/)
195SYSDIR=	${_dir}
196.endif
197.endfor
198.if !defined(SYSDIR) || !exists(${SYSDIR}/kern/)
199.error "can't find kernel source tree"
200.endif
201
202${_ILINKS}:
203	@case ${.TARGET} in \
204	machine) \
205		path=${SYSDIR}/${MACHINE_ARCH}/include ;; \
206	@) \
207		path=${SYSDIR} ;; \
208	esac ; \
209	path=`(cd $$path && /bin/pwd)` ; \
210	${ECHO} ${.TARGET} "->" $$path ; \
211	ln -s $$path ${.TARGET}
212
213CLEANFILES+= ${PROG} ${KMOD}.kld ${OBJS} ${_ILINKS} symb.tmp tmp.o
214
215.if defined(DEBUG_FLAGS)
216CLEANFILES+= ${FULLPROG}
217.endif
218
219.if !target(install)
220
221_INSTALLFLAGS:=	${INSTALLFLAGS}
222.for ie in ${INSTALLFLAGS_EDIT}
223_INSTALLFLAGS:=	${_INSTALLFLAGS${ie}}
224.endfor
225
226.if defined(DEBUG_FLAGS)
227install.debug:
228	cd ${.CURDIR}; ${MAKE} -DINSTALL_DEBUG install
229.endif
230
231.if !target(realinstall)
232realinstall: _kmodinstall
233.ORDER: beforeinstall _kmodinstall
234_kmodinstall:
235.if defined(DEBUG_FLAGS) && defined(INSTALL_DEBUG)
236	${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
237	    ${_INSTALLFLAGS} ${FULLPROG} ${DESTDIR}${KMODDIR}
238.else
239	${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
240	    ${_INSTALLFLAGS} ${PROG} ${DESTDIR}${KMODDIR}
241
242.include <bsd.links.mk>
243
244.if !defined(NO_XREF)
245afterinstall: _kldxref
246.ORDER: realinstall _kldxref
247.ORDER: _installlinks _kldxref
248_kldxref:
249	@if type kldxref >/dev/null 2>&1; then \
250		${ECHO} kldxref ${DESTDIR}${KMODDIR}; \
251		kldxref ${DESTDIR}${KMODDIR}; \
252	fi
253.endif
254.endif
255.endif !target(realinstall)
256
257.endif !target(install)
258
259.if !target(load)
260load:	${PROG}
261	${KMODLOAD} -v ${.OBJDIR}/${KMOD}.ko
262.endif
263
264.if !target(unload)
265unload:
266	${KMODUNLOAD} -v ${KMOD}
267.endif
268
269.if defined(KERNBUILDDIR)
270.PATH: ${KERNBUILDDIR}
271CFLAGS += -I${KERNBUILDDIR}
272.for _src in ${SRCS:Mopt_*.h}
273CLEANFILES+=	${_src}
274.if !target(${_src})
275${_src}:
276	ln -s ${KERNBUILDDIR}/${_src} ${.TARGET}
277.endif
278.endfor
279.else
280.for _src in ${SRCS:Mopt_*.h}
281CLEANFILES+=	${_src}
282.if !target(${_src})
283${_src}:
284	touch ${.TARGET}
285.endif
286.endfor
287.endif
288
289MFILES?= kern/bus_if.m kern/device_if.m dev/iicbus/iicbb_if.m \
290    dev/iicbus/iicbus_if.m isa/isa_if.m \
291    libkern/iconv_converter_if.m \
292    dev/eisa/eisa_if.m dev/mii/miibus_if.m \
293    dev/pccard/card_if.m dev/pccard/power_if.m dev/pci/pci_if.m \
294    dev/pci/pcib_if.m dev/ppbus/ppbus_if.m dev/smbus/smbus_if.m \
295    dev/usb/usb_if.m dev/sound/pcm/ac97_if.m dev/sound/pcm/channel_if.m \
296    dev/sound/pcm/feeder_if.m dev/sound/pcm/mixer_if.m pci/agp_if.m \
297    opencrypto/crypto_if.m pc98/pc98/canbus_if.m dev/uart/uart_if.m
298
299.for _srcsrc in ${MFILES}
300.for _ext in c h
301.for _src in ${SRCS:M${_srcsrc:T:R}.${_ext}}
302CLEANFILES+=	${_src}
303.if !target(${_src})
304.if !exists(@)
305${_src}: @
306.endif
307.if exists(@)
308${_src}: @/tools/makeobjops.awk @/${_srcsrc}
309.endif
310	${AWK} -f @/tools/makeobjops.awk @/${_srcsrc} -${_ext}
311.endif
312.endfor # _src
313.endfor # _ext
314.endfor # _srcsrc
315
316.for _ext in c h
317.if ${SRCS:Mvnode_if.${_ext}} != ""
318CLEANFILES+=	vnode_if.${_ext}
319.if !exists(@)
320vnode_if.${_ext}: @
321.endif
322.if exists(@)
323vnode_if.${_ext}: @/tools/vnode_if.awk @/kern/vnode_if.src
324.endif
325	${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -${_ext}
326.endif
327.endfor
328
329.for _i in mii pccard usb
330.if ${SRCS:M${_i}devs.h} != ""
331CLEANFILES+=	${_i}devs.h
332.if !exists(@)
333${_i}devs.h: @
334.endif
335.if exists(@)
336${_i}devs.h: @/tools/${_i}devs2h.awk @/dev/${_i}/${_i}devs
337.endif
338	${AWK} -f @/tools/${_i}devs2h.awk @/dev/${_i}/${_i}devs
339.endif
340.endfor # _i
341
342regress:
343
344lint: ${SRCS}
345	${LINT} ${LINTKERNFLAGS} ${CFLAGS:M-[DILU]*} ${.ALLSRC:M*.c}
346
347.include <bsd.dep.mk>
348
349.if !exists(${.OBJDIR}/${DEPENDFILE})
350${OBJS}: ${SRCS:M*.h}
351.endif
352
353.include <bsd.obj.mk>
354.include "kern.mk"
355