kmod.mk revision 130416 
1#	From: @(#)bsd.prog.mk	5.26 (Berkeley) 6/25/91
2# $FreeBSD: head/sys/conf/kmod.mk 130416 2004-06-13 17:29:10Z mlaier $
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 ${KERNBUILDDIR}/opt_global.h
92.endif
93
94# Add -I paths for system headers.  Individual KLD makefiles don't
95# need any -I paths for this.  Similar defaults for .PATH can't be
96# set because there are no standard paths for non-headers.
97CFLAGS+=	-I. -I@
98
99# Add -I path for altq headers as they are included via net/if_var.h
100# for example.
101CFLAGS+=	-I@/contrib/altq
102
103# Add a -I path to standard headers like <stddef.h>.  Use a relative
104# path to src/include if possible.  If the @ symlink hasn't been built
105# yet, then we can't tell if the relative path exists.  Add both the
106# potential relative path and an absolute path in that case.
107.if exists(@)
108.if exists(@/../include)
109CFLAGS+=	-I@/../include
110.else
111CFLAGS+=	-I${DESTDIR}/usr/include
112.endif
113.else # !@
114CFLAGS+=	-I@/../include -I${DESTDIR}/usr/include
115.endif # @
116
117.if ${CC} != "icc"
118CFLAGS+=	-finline-limit=${INLINE_LIMIT}
119.endif
120
121# Disallow common variables, and if we end up with commons from
122# somewhere unexpected, allocate storage for them in the module itself.
123.if ${CC} != "icc"
124CFLAGS+=	-fno-common
125.endif
126LDFLAGS+=	-d -warn-common
127
128CFLAGS+=	${DEBUG_FLAGS}
129
130OBJS+=  ${SRCS:N*.h:R:S/$/.o/g}
131
132.if !defined(PROG)
133PROG=	${KMOD}.ko
134.endif
135
136.if !defined(DEBUG_FLAGS)
137FULLPROG=	${PROG}
138.else
139FULLPROG=	${PROG}.debug
140${PROG}: ${FULLPROG}
141	${OBJCOPY} --strip-debug ${FULLPROG} ${PROG}
142.endif
143
144.if ${MACHINE_ARCH} != amd64
145${FULLPROG}: ${KMOD}.kld
146	${LD} -Bshareable ${LDFLAGS} -o ${.TARGET} ${KMOD}.kld
147.if !defined(DEBUG_FLAGS)
148	${OBJCOPY} --strip-debug ${.TARGET}
149.endif
150.endif
151
152EXPORT_SYMS?=	NO
153.if ${EXPORT_SYMS} != YES
154CLEANFILES+=	${.OBJDIR}/export_syms
155.endif
156
157.if ${MACHINE_ARCH} != amd64
158${KMOD}.kld: ${OBJS}
159.else
160${FULLPROG}: ${OBJS}
161.endif
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.if !defined(DEBUG_FLAGS) && ${MACHINE_ARCH} == amd64
178	${OBJCOPY} --strip-debug ${.TARGET}
179.endif
180
181_ILINKS=@ machine
182
183all: objwarn ${PROG}
184
185beforedepend: ${_ILINKS}
186	@rm -f .depend
187
188# Ensure that the links exist without depending on it when it exists which
189# causes all the modules to be rebuilt when the directory pointed to changes.
190.for _link in ${_ILINKS}
191.if !exists(${.OBJDIR}/${_link})
192${OBJS}: ${_link}
193.endif
194.endfor
195
196# Search for kernel source tree in standard places.
197.for _dir in ${.CURDIR}/../.. ${.CURDIR}/../../.. /sys /usr/src/sys
198.if !defined(SYSDIR) && exists(${_dir}/kern/)
199SYSDIR=	${_dir}
200.endif
201.endfor
202.if !defined(SYSDIR) || !exists(${SYSDIR}/kern/)
203.error "can't find kernel source tree"
204.endif
205
206${_ILINKS}:
207	@case ${.TARGET} in \
208	machine) \
209		path=${SYSDIR}/${MACHINE_ARCH}/include ;; \
210	@) \
211		path=${SYSDIR} ;; \
212	esac ; \
213	path=`(cd $$path && /bin/pwd)` ; \
214	${ECHO} ${.TARGET} "->" $$path ; \
215	ln -s $$path ${.TARGET}
216
217CLEANFILES+= ${PROG} ${KMOD}.kld ${OBJS} ${_ILINKS} symb.tmp tmp.o
218
219.if defined(DEBUG_FLAGS)
220CLEANFILES+= ${FULLPROG}
221.endif
222
223.if !target(install)
224
225_INSTALLFLAGS:=	${INSTALLFLAGS}
226.for ie in ${INSTALLFLAGS_EDIT}
227_INSTALLFLAGS:=	${_INSTALLFLAGS${ie}}
228.endfor
229
230.if defined(DEBUG_FLAGS)
231install.debug:
232	cd ${.CURDIR}; ${MAKE} -DINSTALL_DEBUG install
233.endif
234
235.if !target(realinstall)
236realinstall: _kmodinstall
237.ORDER: beforeinstall _kmodinstall
238_kmodinstall:
239.if defined(DEBUG_FLAGS) && defined(INSTALL_DEBUG)
240	${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
241	    ${_INSTALLFLAGS} ${FULLPROG} ${DESTDIR}${KMODDIR}
242.else
243	${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
244	    ${_INSTALLFLAGS} ${PROG} ${DESTDIR}${KMODDIR}
245
246.include <bsd.links.mk>
247
248.if !defined(NO_XREF)
249afterinstall: _kldxref
250.ORDER: realinstall _kldxref
251.ORDER: _installlinks _kldxref
252_kldxref:
253	@if type kldxref >/dev/null 2>&1; then \
254		${ECHO} kldxref ${DESTDIR}${KMODDIR}; \
255		kldxref ${DESTDIR}${KMODDIR}; \
256	fi
257.endif
258.endif
259.endif !target(realinstall)
260
261.endif !target(install)
262
263.if !target(load)
264load:	${PROG}
265	${KMODLOAD} -v ${.OBJDIR}/${KMOD}.ko
266.endif
267
268.if !target(unload)
269unload:
270	${KMODUNLOAD} -v ${KMOD}
271.endif
272
273.if defined(KERNBUILDDIR)
274.PATH: ${KERNBUILDDIR}
275CFLAGS += -I${KERNBUILDDIR}
276.for _src in ${SRCS:Mopt_*.h}
277CLEANFILES+=	${_src}
278.if !target(${_src})
279${_src}:
280	ln -s ${KERNBUILDDIR}/${_src} ${.TARGET}
281.endif
282.endfor
283.else
284.for _src in ${SRCS:Mopt_*.h}
285CLEANFILES+=	${_src}
286.if !target(${_src})
287${_src}:
288	touch ${.TARGET}
289.endif
290.endfor
291.endif
292
293MFILES?= kern/bus_if.m kern/device_if.m dev/iicbus/iicbb_if.m \
294    dev/iicbus/iicbus_if.m isa/isa_if.m \
295    libkern/iconv_converter_if.m \
296    dev/eisa/eisa_if.m dev/mii/miibus_if.m \
297    dev/pccard/card_if.m dev/pccard/power_if.m dev/pci/pci_if.m \
298    dev/pci/pcib_if.m dev/ppbus/ppbus_if.m dev/smbus/smbus_if.m \
299    dev/usb/usb_if.m dev/sound/pcm/ac97_if.m dev/sound/pcm/channel_if.m \
300    dev/sound/pcm/feeder_if.m dev/sound/pcm/mixer_if.m pci/agp_if.m \
301    opencrypto/crypto_if.m pc98/pc98/canbus_if.m dev/uart/uart_if.m
302
303.for _srcsrc in ${MFILES}
304.for _ext in c h
305.for _src in ${SRCS:M${_srcsrc:T:R}.${_ext}}
306CLEANFILES+=	${_src}
307.if !target(${_src})
308.if !exists(@)
309${_src}: @
310.endif
311.if exists(@)
312${_src}: @/tools/makeobjops.awk @/${_srcsrc}
313.endif
314	${AWK} -f @/tools/makeobjops.awk @/${_srcsrc} -${_ext}
315.endif
316.endfor # _src
317.endfor # _ext
318.endfor # _srcsrc
319
320.for _ext in c h
321.if ${SRCS:Mvnode_if.${_ext}} != ""
322CLEANFILES+=	vnode_if.${_ext}
323.if !exists(@)
324vnode_if.${_ext}: @
325.endif
326.if exists(@)
327vnode_if.${_ext}: @/tools/vnode_if.awk @/kern/vnode_if.src
328.endif
329	${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -${_ext}
330.endif
331.endfor
332
333.for _i in mii pccard usb
334.if ${SRCS:M${_i}devs.h} != ""
335CLEANFILES+=	${_i}devs.h
336.if !exists(@)
337${_i}devs.h: @
338.endif
339.if exists(@)
340${_i}devs.h: @/tools/${_i}devs2h.awk @/dev/${_i}/${_i}devs
341.endif
342	${AWK} -f @/tools/${_i}devs2h.awk @/dev/${_i}/${_i}devs
343.endif
344.endfor # _i
345
346regress:
347
348lint: ${SRCS}
349	${LINT} ${LINTKERNFLAGS} ${CFLAGS:M-[DILU]*} ${.ALLSRC:M*.c}
350
351.include <bsd.dep.mk>
352
353.if !exists(${.OBJDIR}/${DEPENDFILE})
354${OBJS}: ${SRCS:M*.h}
355.endif
356
357.include <bsd.obj.mk>
358.include "kern.mk"
359