kmod.mk revision 89243 
1#	From: @(#)bsd.prog.mk	5.26 (Berkeley) 6/25/91
2# $FreeBSD: head/sys/conf/kmod.mk 89243 2002-01-11 01:11:44Z msmith $
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# NOMAN		KLD does not have a manual page if set.
36#
37# PROG          The name of the kernel module to build.
38#		If not supplied, ${KMOD}.o is used.
39#
40# SRCS          List of source files
41#
42# SUBDIR        A list of subdirectories that should be built as well.
43#               Each of the targets will execute the same target in the
44#               subdirectories.
45#
46# SYMLINKS	Same as LINKS, except it creates symlinks and the
47#		linked-to pathname may be relative.
48#
49# DESTDIR, DISTDIR are set by other Makefiles (e.g. bsd.own.mk)
50#
51# MFILES	Optionally a list of interfaces used by the module.
52#		This file contains a default list of interfaces.
53#
54# EXPORT_SYMS	A list of symbols that should be exported from the module,
55#		or the name of a file containing a list of symbols, or YES
56#		to export all symbols.  If not defined, no symbols are
57#		exported.
58#
59# +++ targets +++
60#
61#       distribute:
62#               This is a variant of install, which will
63#               put the stuff into the right "distribution".
64#
65# 	install:
66#               install the program and its manual pages; if the Makefile
67#               does not itself define the target install, the targets
68#               beforeinstall and afterinstall may also be used to cause
69#               actions immediately before and after the install target
70#		is executed.
71#
72# 	load:
73#		Load KLD.
74#
75# 	unload:
76#		Unload KLD.
77#
78# bsd.obj.mk: clean, cleandir and obj
79# bsd.dep.mk: cleandepend, depend and tags
80# bsd.man.mk: maninstall
81#
82
83KMODLOAD?=	/sbin/kldload
84KMODUNLOAD?=	/sbin/kldunload
85OBJCOPY?=	objcopy
86
87TARGET_ARCH?=	${MACHINE_ARCH}
88
89.if !target(__initialized__)
90__initialized__:
91.if exists(${.CURDIR}/../Makefile.inc)
92.include "${.CURDIR}/../Makefile.inc"
93.endif
94.endif
95
96.SUFFIXES: .out .o .c .cc .cxx .C .y .l .s .S
97
98CFLAGS+=	${COPTS} -D_KERNEL ${CWARNFLAGS}
99CFLAGS+=	-DKLD_MODULE
100
101# Don't use any standard or source-relative include directories.
102# Since -nostdinc will annull any previous -I paths, we repeat all
103# such paths after -nostdinc.  It doesn't seem to be possible to
104# add to the front of `make' variable.
105_ICFLAGS:=	${CFLAGS:M-I*}
106CFLAGS+=	-nostdinc -I- ${INCLMAGIC} ${_ICFLAGS}
107
108# Add -I paths for system headers.  Individual KLD makefiles don't
109# need any -I paths for this.  Similar defaults for .PATH can't be
110# set because there are no standard paths for non-headers.
111CFLAGS+=	-I. -I@ -I@/dev
112
113# Add a -I path to standard headers like <stddef.h>.  Use a relative
114# path to src/include if possible.  If the @ symlink hasn't been built
115# yet, then we can't tell if the relative path exists.  Add both the
116# potential relative path and an absolute path in that case.
117.if exists(@)
118.if exists(@/../include)
119CFLAGS+=	-I@/../include
120.else
121CFLAGS+=	-I${DESTDIR}/usr/include
122.endif
123.else # !@
124CFLAGS+=	-I@/../include -I${DESTDIR}/usr/include
125.endif # @
126
127# Disallow common variables, and if we end up with commons from
128# somewhere unexpected, allocate storage for them in the module itself.
129CFLAGS+=	-fno-common
130LDFLAGS+=	-d -warn-common
131
132CFLAGS+=	${DEBUG_FLAGS}
133
134.if ${OBJFORMAT} == elf
135CLEANFILES+=	setdef0.c setdef1.c setdefs.h
136CLEANFILES+=	setdef0.o setdef1.o
137.endif
138
139OBJS+=  ${SRCS:N*.h:R:S/$/.o/g}
140
141.if !defined(PROG)
142PROG=	${KMOD}.ko
143.endif
144
145.if !defined(DEBUG)
146FULLPROG=	${PROG}
147.else
148FULLPROG=	${PROG}.debug
149${PROG}: ${FULLPROG}
150	${OBJCOPY} --strip-debug ${FULLPROG} ${PROG}
151.endif
152
153${FULLPROG}: ${KMOD}.kld
154	${LD} -Bshareable ${LDFLAGS} -o ${.TARGET} ${KMOD}.kld
155
156EXPORT_SYMS?=	NO
157.if ${EXPORT_SYMS} != YES
158CLEANFILES+=	${.OBJDIR}/export_syms
159.endif
160
161${KMOD}.kld: ${OBJS}
162	${LD} ${LDFLAGS} -r -d -o ${.TARGET} ${OBJS}
163.if defined(EXPORT_SYMS)
164.if ${EXPORT_SYMS} != YES
165.if ${EXPORT_SYMS} == NO
166	touch ${.OBJDIR}/export_syms
167.elif !exists(${.CURDIR}/${EXPORT_SYMS})
168	echo ${EXPORT_SYMS} > ${.OBJDIR}/export_syms
169.else
170	grep -v '^#' < ${EXPORT_SYMS} >  ${.OBJDIR}/export_syms
171.endif
172	awk -f ${SYSDIR}/conf/kmod_syms.awk ${.TARGET} \
173		${.OBJDIR}/export_syms | \
174	xargs -J% ${OBJCOPY} % ${.TARGET}
175.endif
176.endif
177
178
179.if !defined(NOMAN)
180.if 0
181MAN?=	${KMOD}.4
182.endif
183.include <bsd.man.mk>
184.else
185.if !target(all-man)
186all-man: _SUBDIR
187.endif
188.if !target(maninstall)
189maninstall: _SUBDIR
190.endif
191.endif
192
193_ILINKS=@ machine
194
195.MAIN: all
196all: objwarn ${PROG} all-man _SUBDIR
197
198beforedepend: ${_ILINKS}
199	@rm -f .depend
200
201# Ensure that the links exist without depending on it when it exists which
202# causes all the modules to be rebuilt when the directory pointed to changes.
203.for _link in ${_ILINKS}
204.if !exists(${.OBJDIR}/${_link})
205${OBJS}: ${_link}
206.endif
207.endfor
208
209# Search for kernel source tree in standard places.
210.for _dir in ${.CURDIR}/../.. ${.CURDIR}/../../.. /sys /usr/src/sys
211.if !defined(SYSDIR) && exists(${_dir}/kern/)
212SYSDIR=	${_dir}
213.endif
214.endfor
215.if !defined(SYSDIR) || !exists(${SYSDIR}/kern)
216.error "can't find kernel source tree"
217.endif
218
219${_ILINKS}:
220	@case ${.TARGET} in \
221	machine) \
222		path=${SYSDIR}/${MACHINE_ARCH}/include ;; \
223	@) \
224		path=${SYSDIR} ;; \
225	esac ; \
226	path=`(cd $$path && /bin/pwd)` ; \
227	${ECHO} ${.TARGET} "->" $$path ; \
228	ln -s $$path ${.TARGET}
229
230CLEANFILES+= ${PROG} ${FULLPROG} ${KMOD}.kld ${OBJS} ${_ILINKS} symb.tmp tmp.o
231
232.if !target(install)
233.if !target(beforeinstall)
234beforeinstall:
235.endif
236.if !target(afterinstall)
237afterinstall:
238.endif
239
240_INSTALLFLAGS:=	${INSTALLFLAGS}
241.for ie in ${INSTALLFLAGS_EDIT}
242_INSTALLFLAGS:=	${_INSTALLFLAGS${ie}}
243.endfor
244
245install.debug: _SUBDIR
246	${INSTALL} ${COPY} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
247	    ${_INSTALLFLAGS} ${FULLPROG} ${DESTDIR}${KMODDIR}/
248
249realinstall: _SUBDIR
250	${INSTALL} ${COPY} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
251	    ${_INSTALLFLAGS} ${PROG} ${DESTDIR}${KMODDIR}/
252.if defined(LINKS) && !empty(LINKS)
253	@set ${LINKS}; \
254	while test $$# -ge 2; do \
255		l=${DESTDIR}$$1; \
256		shift; \
257		t=${DESTDIR}$$1; \
258		shift; \
259		${ECHO} $$t -\> $$l; \
260		ln -f $$l $$t; \
261	done; true
262.endif
263.if defined(SYMLINKS) && !empty(SYMLINKS)
264	@set ${SYMLINKS}; \
265	while test $$# -ge 2; do \
266		l=$$1; \
267		shift; \
268		t=${DESTDIR}$$1; \
269		shift; \
270		${ECHO} $$t -\> $$l; \
271		ln -fs $$l $$t; \
272	done; true
273.endif
274.if !defined(NO_XREF)
275	-kldxref ${DESTDIR}${KMODDIR}
276.endif
277
278install: afterinstall _SUBDIR
279.if !defined(NOMAN)
280afterinstall: realinstall maninstall
281.else
282afterinstall: realinstall
283.endif
284realinstall: beforeinstall
285.endif
286
287DISTRIBUTION?=	bin
288.if !target(distribute)
289distribute: _SUBDIR
290.for dist in ${DISTRIBUTION}
291	cd ${.CURDIR} ; $(MAKE) install DESTDIR=${DISTDIR}/${dist} SHARED=copies
292.endfor
293.endif
294
295.if !target(load)
296load:	${PROG}
297	${KMODLOAD} -v ${.CURDIR}/${KMOD}.ko
298.endif
299
300.if !target(unload)
301unload:
302	${KMODUNLOAD} -v ${KMOD}
303.endif
304
305.for _src in ${SRCS:Mopt_*.h}
306CLEANFILES+=	${_src}
307.if !target(${_src})
308${_src}:
309	touch ${.TARGET}
310.endif
311.endfor
312
313MFILES?= kern/bus_if.m kern/device_if.m dev/iicbus/iicbb_if.m \
314    dev/iicbus/iicbus_if.m isa/isa_if.m \
315    libkern/iconv_converter_if.m \
316    dev/mii/miibus_if.m \
317    dev/pccard/card_if.m dev/pccard/power_if.m dev/pci/pci_if.m \
318    dev/pci/pcib_if.m dev/ppbus/ppbus_if.m dev/smbus/smbus_if.m \
319    dev/usb/usb_if.m dev/sound/pcm/ac97_if.m dev/sound/pcm/channel_if.m \
320    dev/sound/pcm/feeder_if.m dev/sound/pcm/mixer_if.m pci/agp_if.m
321
322.for _srcsrc in ${MFILES}
323.for _ext in c h
324.for _src in ${SRCS:M${_srcsrc:T:R}.${_ext}}
325CLEANFILES+=	${_src}
326.if !target(${_src})
327.if !exists(@)
328${_src}: @
329.endif
330.if exists(@)
331${_src}: @/kern/makeobjops.pl @/${_srcsrc}
332.endif
333	perl @/kern/makeobjops.pl -${_ext} @/${_srcsrc}
334.endif
335.endfor # _src
336.endfor # _ext
337.endfor # _srcsrc
338
339.for _ext in c h
340.if ${SRCS:Mvnode_if.${_ext}} != ""
341CLEANFILES+=	vnode_if.${_ext}
342.if !exists(@)
343vnode_if.${_ext}: @
344.endif
345.if exists(@)
346vnode_if.${_ext}: @/kern/vnode_if.pl @/kern/vnode_if.src
347.endif
348	perl @/kern/vnode_if.pl -${_ext} @/kern/vnode_if.src
349.endif
350.endfor
351
352regress:
353
354.include <bsd.dep.mk>
355
356.if !exists(${DEPENDFILE})
357${OBJS}: ${SRCS:M*.h}
358.endif
359
360.include <bsd.obj.mk>
361
362.include <bsd.kern.mk>
363