kmod.mk revision 89260 
1#	From: @(#)bsd.prog.mk	5.26 (Berkeley) 6/25/91
2# $FreeBSD: head/sys/conf/kmod.mk 89260 2002-01-11 15:49:02Z 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# DISTRIBUTION  Name of distribution. [bin]
13#
14# KMOD          The name of the kernel module to build.
15#
16# KMODDIR	Base path for kernel modules (see kld(4)). [/boot/kernel]
17#
18# KMODOWN	KLD owner. [${BINOWN}]
19#
20# KMODGRP	KLD group. [${BINGRP}]
21#
22# KMODMODE	KLD mode. [${BINMODE}]
23#
24# LINKS		The list of KLD links; should be full pathnames, the
25#               linked-to file coming first, followed by the linked
26#               file.  The files are hard-linked.  For example, to link
27#               /modules/master and /modules/meister, use:
28#
29#			LINKS=  /modules/master /modules/meister
30#
31# KMODLOAD	Command to load a kernel module [/sbin/kldload]
32#
33# KMODUNLOAD	Command to unload a kernel module [/sbin/kldunload]
34#
35# PROG          The name of the kernel module to build.
36#		If not supplied, ${KMOD}.o is used.
37#
38# SRCS          List of source files
39#
40# SUBDIR        A list of subdirectories that should be built as well.
41#               Each of the targets will execute the same target in the
42#               subdirectories.
43#
44# SYMLINKS	Same as LINKS, except it creates symlinks and the
45#		linked-to pathname may be relative.
46#
47# DESTDIR, DISTDIR are set by other Makefiles (e.g. bsd.own.mk)
48#
49# MFILES	Optionally a list of interfaces used by the module.
50#		This file contains a default list of interfaces.
51#
52# EXPORT_SYMS	A list of symbols that should be exported from the module,
53#		or the name of a file containing a list of symbols, or YES
54#		to export all symbols.  If not defined, no symbols are
55#		exported.
56#
57# +++ targets +++
58#
59#       distribute:
60#               This is a variant of install, which will
61#               put the stuff into the right "distribution".
62#
63# 	install:
64#               install the kernel module; if the Makefile
65#               does not itself define the target install, the targets
66#               beforeinstall and afterinstall may also be used to cause
67#               actions immediately before and after the install target
68#		is executed.
69#
70# 	load:
71#		Load KLD.
72#
73# 	unload:
74#		Unload KLD.
75#
76# bsd.obj.mk: clean, cleandir and obj
77# bsd.dep.mk: cleandepend, depend and tags
78#
79
80KMODLOAD?=	/sbin/kldload
81KMODUNLOAD?=	/sbin/kldunload
82OBJCOPY?=	objcopy
83
84TARGET_ARCH?=	${MACHINE_ARCH}
85
86.if !target(__initialized__)
87__initialized__:
88.if exists(${.CURDIR}/../Makefile.inc)
89.include "${.CURDIR}/../Makefile.inc"
90.endif
91.endif
92
93.SUFFIXES: .out .o .c .cc .cxx .C .y .l .s .S
94
95CFLAGS+=	${COPTS} -D_KERNEL ${CWARNFLAGS}
96CFLAGS+=	-DKLD_MODULE
97
98# Don't use any standard or source-relative include directories.
99# Since -nostdinc will annull any previous -I paths, we repeat all
100# such paths after -nostdinc.  It doesn't seem to be possible to
101# add to the front of `make' variable.
102_ICFLAGS:=	${CFLAGS:M-I*}
103CFLAGS+=	-nostdinc -I- ${INCLMAGIC} ${_ICFLAGS}
104
105# Add -I paths for system headers.  Individual KLD makefiles don't
106# need any -I paths for this.  Similar defaults for .PATH can't be
107# set because there are no standard paths for non-headers.
108CFLAGS+=	-I. -I@ -I@/dev
109
110# Add a -I path to standard headers like <stddef.h>.  Use a relative
111# path to src/include if possible.  If the @ symlink hasn't been built
112# yet, then we can't tell if the relative path exists.  Add both the
113# potential relative path and an absolute path in that case.
114.if exists(@)
115.if exists(@/../include)
116CFLAGS+=	-I@/../include
117.else
118CFLAGS+=	-I${DESTDIR}/usr/include
119.endif
120.else # !@
121CFLAGS+=	-I@/../include -I${DESTDIR}/usr/include
122.endif # @
123
124# Disallow common variables, and if we end up with commons from
125# somewhere unexpected, allocate storage for them in the module itself.
126CFLAGS+=	-fno-common
127LDFLAGS+=	-d -warn-common
128
129CFLAGS+=	${DEBUG_FLAGS}
130
131.if ${OBJFORMAT} == elf
132CLEANFILES+=	setdef0.c setdef1.c setdefs.h
133CLEANFILES+=	setdef0.o setdef1.o
134.endif
135
136OBJS+=  ${SRCS:N*.h:R:S/$/.o/g}
137
138.if !defined(PROG)
139PROG=	${KMOD}.ko
140.endif
141
142.if !defined(DEBUG)
143FULLPROG=	${PROG}
144.else
145FULLPROG=	${PROG}.debug
146${PROG}: ${FULLPROG}
147	${OBJCOPY} --strip-debug ${FULLPROG} ${PROG}
148.endif
149
150${FULLPROG}: ${KMOD}.kld
151	${LD} -Bshareable ${LDFLAGS} -o ${.TARGET} ${KMOD}.kld
152
153EXPORT_SYMS?=	NO
154.if ${EXPORT_SYMS} != YES
155CLEANFILES+=	${.OBJDIR}/export_syms
156.endif
157
158${KMOD}.kld: ${OBJS}
159	${LD} ${LDFLAGS} -r -d -o ${.TARGET} ${OBJS}
160.if defined(EXPORT_SYMS)
161.if ${EXPORT_SYMS} != YES
162.if ${EXPORT_SYMS} == NO
163	touch ${.OBJDIR}/export_syms
164.elif !exists(${.CURDIR}/${EXPORT_SYMS})
165	echo ${EXPORT_SYMS} > ${.OBJDIR}/export_syms
166.else
167	grep -v '^#' < ${EXPORT_SYMS} >  ${.OBJDIR}/export_syms
168.endif
169	awk -f ${SYSDIR}/conf/kmod_syms.awk ${.TARGET} \
170		${.OBJDIR}/export_syms | \
171	xargs -J% ${OBJCOPY} % ${.TARGET}
172.endif
173.endif
174
175
176.if !target(all-man)
177all-man: _SUBDIR
178.endif
179.if !target(maninstall)
180maninstall: _SUBDIR
181.endif
182
183_ILINKS=@ machine
184
185.MAIN: all
186all: objwarn ${PROG} _SUBDIR
187
188beforedepend: ${_ILINKS}
189	@rm -f .depend
190
191# Ensure that the links exist without depending on it when it exists which
192# causes all the modules to be rebuilt when the directory pointed to changes.
193.for _link in ${_ILINKS}
194.if !exists(${.OBJDIR}/${_link})
195${OBJS}: ${_link}
196.endif
197.endfor
198
199# Search for kernel source tree in standard places.
200.for _dir in ${.CURDIR}/../.. ${.CURDIR}/../../.. /sys /usr/src/sys
201.if !defined(SYSDIR) && exists(${_dir}/kern/)
202SYSDIR=	${_dir}
203.endif
204.endfor
205.if !defined(SYSDIR) || !exists(${SYSDIR}/kern)
206.error "can't find kernel source tree"
207.endif
208
209${_ILINKS}:
210	@case ${.TARGET} in \
211	machine) \
212		path=${SYSDIR}/${MACHINE_ARCH}/include ;; \
213	@) \
214		path=${SYSDIR} ;; \
215	esac ; \
216	path=`(cd $$path && /bin/pwd)` ; \
217	${ECHO} ${.TARGET} "->" $$path ; \
218	ln -s $$path ${.TARGET}
219
220CLEANFILES+= ${PROG} ${FULLPROG} ${KMOD}.kld ${OBJS} ${_ILINKS} symb.tmp tmp.o
221
222.if !target(install)
223.if !target(beforeinstall)
224beforeinstall:
225.endif
226.if !target(afterinstall)
227afterinstall:
228.endif
229
230_INSTALLFLAGS:=	${INSTALLFLAGS}
231.for ie in ${INSTALLFLAGS_EDIT}
232_INSTALLFLAGS:=	${_INSTALLFLAGS${ie}}
233.endfor
234
235install.debug: _SUBDIR
236	${INSTALL} ${COPY} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
237	    ${_INSTALLFLAGS} ${FULLPROG} ${DESTDIR}${KMODDIR}/
238
239realinstall: _SUBDIR
240	${INSTALL} ${COPY} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
241	    ${_INSTALLFLAGS} ${PROG} ${DESTDIR}${KMODDIR}/
242.if defined(LINKS) && !empty(LINKS)
243	@set ${LINKS}; \
244	while test $$# -ge 2; do \
245		l=${DESTDIR}$$1; \
246		shift; \
247		t=${DESTDIR}$$1; \
248		shift; \
249		${ECHO} $$t -\> $$l; \
250		ln -f $$l $$t; \
251	done; true
252.endif
253.if defined(SYMLINKS) && !empty(SYMLINKS)
254	@set ${SYMLINKS}; \
255	while test $$# -ge 2; do \
256		l=$$1; \
257		shift; \
258		t=${DESTDIR}$$1; \
259		shift; \
260		${ECHO} $$t -\> $$l; \
261		ln -fs $$l $$t; \
262	done; true
263.endif
264.if !defined(NO_XREF)
265	-kldxref ${DESTDIR}${KMODDIR}
266.endif
267
268install: afterinstall _SUBDIR
269afterinstall: realinstall
270realinstall: beforeinstall
271.endif
272
273DISTRIBUTION?=	bin
274.if !target(distribute)
275distribute: _SUBDIR
276.for dist in ${DISTRIBUTION}
277	cd ${.CURDIR} ; $(MAKE) install DESTDIR=${DISTDIR}/${dist} SHARED=copies
278.endfor
279.endif
280
281.if !target(load)
282load:	${PROG}
283	${KMODLOAD} -v ${.CURDIR}/${KMOD}.ko
284.endif
285
286.if !target(unload)
287unload:
288	${KMODUNLOAD} -v ${KMOD}
289.endif
290
291.for _src in ${SRCS:Mopt_*.h}
292CLEANFILES+=	${_src}
293.if !target(${_src})
294${_src}:
295	touch ${.TARGET}
296.endif
297.endfor
298
299MFILES?= kern/bus_if.m kern/device_if.m dev/iicbus/iicbb_if.m \
300    dev/iicbus/iicbus_if.m isa/isa_if.m \
301    libkern/iconv_converter_if.m \
302    dev/mii/miibus_if.m \
303    dev/pccard/card_if.m dev/pccard/power_if.m dev/pci/pci_if.m \
304    dev/pci/pcib_if.m dev/ppbus/ppbus_if.m dev/smbus/smbus_if.m \
305    dev/usb/usb_if.m dev/sound/pcm/ac97_if.m dev/sound/pcm/channel_if.m \
306    dev/sound/pcm/feeder_if.m dev/sound/pcm/mixer_if.m pci/agp_if.m
307
308.for _srcsrc in ${MFILES}
309.for _ext in c h
310.for _src in ${SRCS:M${_srcsrc:T:R}.${_ext}}
311CLEANFILES+=	${_src}
312.if !target(${_src})
313.if !exists(@)
314${_src}: @
315.endif
316.if exists(@)
317${_src}: @/kern/makeobjops.pl @/${_srcsrc}
318.endif
319	perl @/kern/makeobjops.pl -${_ext} @/${_srcsrc}
320.endif
321.endfor # _src
322.endfor # _ext
323.endfor # _srcsrc
324
325.for _ext in c h
326.if ${SRCS:Mvnode_if.${_ext}} != ""
327CLEANFILES+=	vnode_if.${_ext}
328.if !exists(@)
329vnode_if.${_ext}: @
330.endif
331.if exists(@)
332vnode_if.${_ext}: @/kern/vnode_if.pl @/kern/vnode_if.src
333.endif
334	perl @/kern/vnode_if.pl -${_ext} @/kern/vnode_if.src
335.endif
336.endfor
337
338regress:
339
340.include <bsd.dep.mk>
341
342.if !exists(${DEPENDFILE})
343${OBJS}: ${SRCS:M*.h}
344.endif
345
346.include <bsd.obj.mk>
347
348.include <bsd.kern.mk>
349