kmod.mk revision 95835 
1#	From: @(#)bsd.prog.mk	5.26 (Berkeley) 6/25/91
2# $FreeBSD: head/sys/conf/kmod.mk 95835 2002-05-01 01:32:28Z peter $
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
80AWK?=		awk
81KMODLOAD?=	/sbin/kldload
82KMODUNLOAD?=	/sbin/kldunload
83OBJCOPY?=	objcopy
84
85.if defined(KMODDEPS)
86.error "Do not use KMODDEPS on 5.0+, use MODULE_VERSION/MODULE_DEPEND"
87.endif
88
89.include <bsd.init.mk>
90
91.SUFFIXES: .out .o .c .cc .cxx .C .y .l .s .S
92
93CFLAGS+=	${COPTS} -D_KERNEL ${CWARNFLAGS}
94CFLAGS+=	-DKLD_MODULE
95
96# Don't use any standard or source-relative include directories.
97# Since -nostdinc will annull any previous -I paths, we repeat all
98# such paths after -nostdinc.  It doesn't seem to be possible to
99# add to the front of `make' variable.
100_ICFLAGS:=	${CFLAGS:M-I*}
101CFLAGS+=	-nostdinc -I- ${INCLMAGIC} ${_ICFLAGS}
102
103# Add -I paths for system headers.  Individual KLD makefiles don't
104# need any -I paths for this.  Similar defaults for .PATH can't be
105# set because there are no standard paths for non-headers.
106CFLAGS+=	-I. -I@ -I@/dev
107
108# Add a -I path to standard headers like <stddef.h>.  Use a relative
109# path to src/include if possible.  If the @ symlink hasn't been built
110# yet, then we can't tell if the relative path exists.  Add both the
111# potential relative path and an absolute path in that case.
112.if exists(@)
113.if exists(@/../include)
114CFLAGS+=	-I@/../include
115.else
116CFLAGS+=	-I${DESTDIR}/usr/include
117.endif
118.else # !@
119CFLAGS+=	-I@/../include -I${DESTDIR}/usr/include
120.endif # @
121
122# Disallow common variables, and if we end up with commons from
123# somewhere unexpected, allocate storage for them in the module itself.
124CFLAGS+=	-fno-common
125LDFLAGS+=	-d -warn-common
126
127CFLAGS+=	${DEBUG_FLAGS}
128
129.if ${OBJFORMAT} == elf
130CLEANFILES+=	setdef0.c setdef1.c setdefs.h
131CLEANFILES+=	setdef0.o setdef1.o
132.endif
133
134OBJS+=  ${SRCS:N*.h:R:S/$/.o/g}
135
136.if !defined(PROG)
137PROG=	${KMOD}.ko
138.endif
139
140.if !defined(DEBUG)
141FULLPROG=	${PROG}
142.else
143FULLPROG=	${PROG}.debug
144${PROG}: ${FULLPROG}
145	${OBJCOPY} --strip-debug ${FULLPROG} ${PROG}
146.endif
147
148${FULLPROG}: ${KMOD}.kld
149	${LD} -Bshareable ${LDFLAGS} -o ${.TARGET} ${KMOD}.kld
150
151EXPORT_SYMS?=	NO
152.if ${EXPORT_SYMS} != YES
153CLEANFILES+=	${.OBJDIR}/export_syms
154.endif
155
156${KMOD}.kld: ${OBJS}
157	${LD} ${LDFLAGS} -r -d -o ${.TARGET} ${OBJS}
158.if defined(EXPORT_SYMS)
159.if ${EXPORT_SYMS} != YES
160.if ${EXPORT_SYMS} == NO
161	touch ${.OBJDIR}/export_syms
162.elif !exists(${.CURDIR}/${EXPORT_SYMS})
163	echo ${EXPORT_SYMS} > ${.OBJDIR}/export_syms
164.else
165	grep -v '^#' < ${EXPORT_SYMS} >  ${.OBJDIR}/export_syms
166.endif
167	awk -f ${SYSDIR}/conf/kmod_syms.awk ${.TARGET} \
168		${.OBJDIR}/export_syms | \
169	xargs -J% ${OBJCOPY} % ${.TARGET}
170.endif
171.endif
172
173
174_ILINKS=@ machine
175
176all: objwarn ${PROG}
177
178beforedepend: ${_ILINKS}
179	@rm -f .depend
180
181# Ensure that the links exist without depending on it when it exists which
182# causes all the modules to be rebuilt when the directory pointed to changes.
183.for _link in ${_ILINKS}
184.if !exists(${.OBJDIR}/${_link})
185${OBJS}: ${_link}
186.endif
187.endfor
188
189# Search for kernel source tree in standard places.
190.for _dir in ${.CURDIR}/../.. ${.CURDIR}/../../.. /sys /usr/src/sys
191.if !defined(SYSDIR) && exists(${_dir}/kern/)
192SYSDIR=	${_dir}
193.endif
194.endfor
195.if !defined(SYSDIR) || !exists(${SYSDIR}/kern)
196.error "can't find kernel source tree"
197.endif
198
199${_ILINKS}:
200	@case ${.TARGET} in \
201	machine) \
202		path=${SYSDIR}/${MACHINE_ARCH}/include ;; \
203	@) \
204		path=${SYSDIR} ;; \
205	esac ; \
206	path=`(cd $$path && /bin/pwd)` ; \
207	${ECHO} ${.TARGET} "->" $$path ; \
208	ln -s $$path ${.TARGET}
209
210CLEANFILES+= ${PROG} ${FULLPROG} ${KMOD}.kld ${OBJS} ${_ILINKS} symb.tmp tmp.o
211
212.if !target(install)
213.if !target(beforeinstall)
214beforeinstall:
215.endif
216.if !target(afterinstall)
217afterinstall:
218.endif
219
220_INSTALLFLAGS:=	${INSTALLFLAGS}
221.for ie in ${INSTALLFLAGS_EDIT}
222_INSTALLFLAGS:=	${_INSTALLFLAGS${ie}}
223.endfor
224
225.if defined(DEBUG)
226install.debug:
227	cd ${.CURDIR}; ${MAKE} -DINSTALL_DEBUG install
228.endif
229
230realinstall:
231.if defined(DEBUG) && defined(INSTALL_DEBUG)
232	${INSTALL} ${COPY} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
233	    ${_INSTALLFLAGS} ${FULLPROG} ${DESTDIR}${KMODDIR}/
234.else
235	${INSTALL} ${COPY} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
236	    ${_INSTALLFLAGS} ${PROG} ${DESTDIR}${KMODDIR}/
237.if defined(LINKS) && !empty(LINKS)
238	@set ${LINKS}; \
239	while test $$# -ge 2; do \
240		l=${DESTDIR}$$1; \
241		shift; \
242		t=${DESTDIR}$$1; \
243		shift; \
244		${ECHO} $$t -\> $$l; \
245		ln -f $$l $$t; \
246	done; true
247.endif
248.if defined(SYMLINKS) && !empty(SYMLINKS)
249	@set ${SYMLINKS}; \
250	while test $$# -ge 2; do \
251		l=$$1; \
252		shift; \
253		t=${DESTDIR}$$1; \
254		shift; \
255		${ECHO} $$t -\> $$l; \
256		ln -fs $$l $$t; \
257	done; true
258.endif
259.if !defined(NO_XREF)
260	@echo "FAILURES HERE ARE OK"
261	-kldxref ${DESTDIR}${KMODDIR}
262	@echo "END OF SECTION WHERE FAILURES ARE OK"
263.endif
264.endif
265
266install: afterinstall
267afterinstall: realinstall
268realinstall: beforeinstall
269.endif
270
271DISTRIBUTION?=	bin
272.if !target(distribute)
273distribute:
274.for dist in ${DISTRIBUTION}
275	cd ${.CURDIR} ; $(MAKE) install DESTDIR=${DISTDIR}/${dist} SHARED=copies
276.endfor
277.endif
278
279.if !target(load)
280load:	${PROG}
281	${KMODLOAD} -v ${.CURDIR}/${KMOD}.ko
282.endif
283
284.if !target(unload)
285unload:
286	${KMODUNLOAD} -v ${KMOD}
287.endif
288
289.for _src in ${SRCS:Mopt_*.h}
290CLEANFILES+=	${_src}
291.if !target(${_src})
292${_src}:
293	touch ${.TARGET}
294.endif
295.endfor
296
297MFILES?= kern/bus_if.m kern/device_if.m dev/iicbus/iicbb_if.m \
298    dev/iicbus/iicbus_if.m isa/isa_if.m \
299    libkern/iconv_converter_if.m \
300    dev/mii/miibus_if.m \
301    dev/pccard/card_if.m dev/pccard/power_if.m dev/pci/pci_if.m \
302    dev/pci/pcib_if.m dev/ppbus/ppbus_if.m dev/smbus/smbus_if.m \
303    dev/usb/usb_if.m dev/sound/pcm/ac97_if.m dev/sound/pcm/channel_if.m \
304    dev/sound/pcm/feeder_if.m dev/sound/pcm/mixer_if.m pci/agp_if.m
305
306.for _srcsrc in ${MFILES}
307.for _ext in c h
308.for _src in ${SRCS:M${_srcsrc:T:R}.${_ext}}
309CLEANFILES+=	${_src}
310.if !target(${_src})
311.if !exists(@)
312${_src}: @
313.endif
314.if exists(@)
315${_src}: @/kern/makeobjops.pl @/${_srcsrc}
316.endif
317	perl @/kern/makeobjops.pl -${_ext} @/${_srcsrc}
318.endif
319.endfor # _src
320.endfor # _ext
321.endfor # _srcsrc
322
323.for _ext in c h
324.if ${SRCS:Mvnode_if.${_ext}} != ""
325CLEANFILES+=	vnode_if.${_ext}
326.if !exists(@)
327vnode_if.${_ext}: @
328.endif
329.if exists(@)
330vnode_if.${_ext}: @/tools/vnode_if.awk @/kern/vnode_if.src
331.endif
332	${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -${_ext}
333.endif
334.endfor
335
336regress:
337
338lint: ${SRCS}
339	${LINT} ${LINTKERNFLAGS} ${CFLAGS:M-[DILU]*} ${.ALLSRC:M*.c}
340
341.include <bsd.dep.mk>
342
343.if !exists(${DEPENDFILE})
344${OBJS}: ${SRCS:M*.h}
345.endif
346
347.include <bsd.obj.mk>
348
349.include <bsd.kern.mk>
350