xref: /freebsd/sys/conf/kmod.mk (revision 2357939bc239bd5334a169b62313806178dd8f30) 
1#	From: @(#)bsd.prog.mk	5.26 (Berkeley) 6/25/91
2# $FreeBSD$
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} ${PROG}
138.endif
139
140${FULLPROG}: ${KMOD}.kld
141	${LD} -Bshareable ${LDFLAGS} -o ${.TARGET} ${KMOD}.kld
142.if !defined(DEBUG_FLAGS)
143	${OBJCOPY} --strip-debug ${.TARGET}
144.endif
145
146EXPORT_SYMS?=	NO
147.if ${EXPORT_SYMS} != YES
148CLEANFILES+=	${.OBJDIR}/export_syms
149.endif
150
151${KMOD}.kld: ${OBJS}
152	${LD} ${LDFLAGS} -r -d -o ${.TARGET} ${OBJS}
153.if defined(EXPORT_SYMS)
154.if ${EXPORT_SYMS} != YES
155.if ${EXPORT_SYMS} == NO
156	touch ${.OBJDIR}/export_syms
157.elif !exists(${.CURDIR}/${EXPORT_SYMS})
158	echo ${EXPORT_SYMS} > ${.OBJDIR}/export_syms
159.else
160	grep -v '^#' < ${EXPORT_SYMS} >  ${.OBJDIR}/export_syms
161.endif
162	awk -f ${SYSDIR}/conf/kmod_syms.awk ${.TARGET} \
163		${.OBJDIR}/export_syms | \
164	xargs -J% ${OBJCOPY} % ${.TARGET}
165.endif
166.endif
167
168_ILINKS=@ machine
169
170all: objwarn ${PROG}
171
172beforedepend: ${_ILINKS}
173	@rm -f .depend
174
175# Ensure that the links exist without depending on it when it exists which
176# causes all the modules to be rebuilt when the directory pointed to changes.
177.for _link in ${_ILINKS}
178.if !exists(${.OBJDIR}/${_link})
179${OBJS}: ${_link}
180.endif
181.endfor
182
183# Search for kernel source tree in standard places.
184.for _dir in ${.CURDIR}/../.. ${.CURDIR}/../../.. /sys /usr/src/sys
185.if !defined(SYSDIR) && exists(${_dir}/kern/)
186SYSDIR=	${_dir}
187.endif
188.endfor
189.if !defined(SYSDIR) || !exists(${SYSDIR}/kern/)
190.error "can't find kernel source tree"
191.endif
192
193${_ILINKS}:
194	@case ${.TARGET} in \
195	machine) \
196		path=${SYSDIR}/${MACHINE_ARCH}/include ;; \
197	@) \
198		path=${SYSDIR} ;; \
199	esac ; \
200	path=`(cd $$path && /bin/pwd)` ; \
201	${ECHO} ${.TARGET} "->" $$path ; \
202	ln -s $$path ${.TARGET}
203
204CLEANFILES+= ${PROG} ${KMOD}.kld ${OBJS} ${_ILINKS} symb.tmp tmp.o
205
206.if defined(DEBUG_FLAGS)
207CLEANFILES+= ${FULLPROG}
208.endif
209
210.if !target(install)
211
212_INSTALLFLAGS:=	${INSTALLFLAGS}
213.for ie in ${INSTALLFLAGS_EDIT}
214_INSTALLFLAGS:=	${_INSTALLFLAGS${ie}}
215.endfor
216
217.if defined(DEBUG_FLAGS)
218install.debug:
219	cd ${.CURDIR}; ${MAKE} -DINSTALL_DEBUG install
220.endif
221
222.if !target(realinstall)
223realinstall: _kmodinstall
224.ORDER: beforeinstall _kmodinstall
225_kmodinstall:
226.if defined(DEBUG_FLAGS) && defined(INSTALL_DEBUG)
227	${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
228	    ${_INSTALLFLAGS} ${FULLPROG} ${DESTDIR}${KMODDIR}
229.else
230	${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
231	    ${_INSTALLFLAGS} ${PROG} ${DESTDIR}${KMODDIR}
232
233.include <bsd.links.mk>
234
235.if !defined(NO_XREF)
236afterinstall: _kldxref
237.ORDER: realinstall _kldxref
238.ORDER: _installlinks _kldxref
239_kldxref:
240	@if type kldxref >/dev/null 2>&1; then \
241		${ECHO} kldxref ${DESTDIR}${KMODDIR}; \
242		kldxref ${DESTDIR}${KMODDIR}; \
243	fi
244.endif
245.endif
246.endif !target(realinstall)
247
248.endif !target(install)
249
250.if !target(load)
251load:	${PROG}
252	${KMODLOAD} -v ${.OBJDIR}/${KMOD}.ko
253.endif
254
255.if !target(unload)
256unload:
257	${KMODUNLOAD} -v ${KMOD}
258.endif
259
260.if defined(KERNBUILDDIR)
261.PATH: ${KERNBUILDDIR}
262CFLAGS += -I${KERNBUILDDIR}
263.for _src in ${SRCS:Mopt_*.h}
264CLEANFILES+=	${_src}
265.if !target(${_src})
266${_src}:
267	ln -s ${KERNBUILDDIR}/${_src} ${.TARGET}
268.endif
269.endfor
270.else
271.for _src in ${SRCS:Mopt_*.h}
272CLEANFILES+=	${_src}
273.if !target(${_src})
274${_src}:
275	touch ${.TARGET}
276.endif
277.endfor
278.endif
279
280MFILES?= kern/bus_if.m kern/device_if.m dev/iicbus/iicbb_if.m \
281    dev/iicbus/iicbus_if.m isa/isa_if.m \
282    libkern/iconv_converter_if.m \
283    dev/mii/miibus_if.m \
284    dev/pccard/card_if.m dev/pccard/power_if.m dev/pci/pci_if.m \
285    dev/pci/pcib_if.m dev/ppbus/ppbus_if.m dev/smbus/smbus_if.m \
286    dev/usb/usb_if.m dev/sound/pcm/ac97_if.m dev/sound/pcm/channel_if.m \
287    dev/sound/pcm/feeder_if.m dev/sound/pcm/mixer_if.m pci/agp_if.m \
288    opencrypto/crypto_if.m pc98/pc98/canbus_if.m dev/uart/uart_if.m
289
290.for _srcsrc in ${MFILES}
291.for _ext in c h
292.for _src in ${SRCS:M${_srcsrc:T:R}.${_ext}}
293CLEANFILES+=	${_src}
294.if !target(${_src})
295.if !exists(@)
296${_src}: @
297.endif
298.if exists(@)
299${_src}: @/tools/makeobjops.awk @/${_srcsrc}
300.endif
301	${AWK} -f @/tools/makeobjops.awk @/${_srcsrc} -${_ext}
302.endif
303.endfor # _src
304.endfor # _ext
305.endfor # _srcsrc
306
307.for _ext in c h
308.if ${SRCS:Mvnode_if.${_ext}} != ""
309CLEANFILES+=	vnode_if.${_ext}
310.if !exists(@)
311vnode_if.${_ext}: @
312.endif
313.if exists(@)
314vnode_if.${_ext}: @/tools/vnode_if.awk @/kern/vnode_if.src
315.endif
316	${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -${_ext}
317.endif
318.endfor
319
320.if ${SRCS:Mmiidevs.h} != ""
321CLEANFILES+=	miidevs.h
322.if !exists(@)
323miidevs.h: @
324.endif
325.if exists(@)
326miidevs.h: @/tools/devlist2h.awk @/dev/mii/miidevs
327.endif
328	${AWK} -f @/tools/devlist2h.awk @/dev/mii/miidevs
329.endif
330
331regress:
332
333lint: ${SRCS}
334	${LINT} ${LINTKERNFLAGS} ${CFLAGS:M-[DILU]*} ${.ALLSRC:M*.c}
335
336.include <bsd.dep.mk>
337
338.if !exists(${.OBJDIR}/${DEPENDFILE})
339${OBJS}: ${SRCS:M*.h}
340.endif
341
342.include <bsd.obj.mk>
343.include "kern.mk"
344