Make sure that length variable is set to zero before Var_Parse() is
[dragonfly.git] / sys / conf / kmod.mk
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1# From: @(#)bsd.prog.mk 5.26 (Berkeley) 6/25/91
2# $FreeBSD: src/sys/conf/kmod.mk,v 1.82.2.15 2003/02/10 13:11:50 nyan Exp $
c2c83759 3# $DragonFly: src/sys/conf/kmod.mk,v 1.17 2004/10/20 23:03:02 dillon Exp $
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4#
5# The include file <bsd.kmod.mk> handles installing Kernel Loadable Device
6# drivers (KLD's).
7#
8#
9# +++ variables +++
10#
11# CLEANFILES Additional files to remove for the clean and cleandir targets.
12#
13# KMOD The name of the kernel module to build.
14#
15# KMODDIR Base path for kernel modules (see kld(4)). [/modules]
16#
17# KMODOWN KLD owner. [${BINOWN}]
18#
19# KMODGRP KLD group. [${BINGRP}]
20#
21# KMODMODE KLD mode. [${BINMODE}]
22#
23# KMODLOAD Command to load a kernel module [/sbin/kldload]
24#
25# KMODUNLOAD Command to unload a kernel module [/sbin/kldunload]
26#
27# NOMAN KLD does not have a manual page if set.
28#
29# PROG The name of the kernel module to build.
30# If not supplied, ${KMOD}.o is used.
31#
32# SRCS List of source files
33#
34# KMODDEPS List of modules which this one is dependant on
35#
36# DESTDIR Change the tree where the module gets installed. [not set]
37#
38# MFILES Optionally a list of interfaces used by the module.
39# This file contains a default list of interfaces.
40#
41# +++ targets +++
42#
43# install:
44# install the kernel module and its manual pages; 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# bsd.man.mk: maninstall
59#
60
c2c83759 61OBJCOPY?= objcopy
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62KMODLOAD?= /sbin/kldload
63KMODUNLOAD?= /sbin/kldunload
64
65.include <bsd.init.mk>
66
67.SUFFIXES: .out .o .c .cc .cxx .C .y .l .s .S
68
69CFLAGS+= ${COPTS} -D_KERNEL ${CWARNFLAGS}
70CFLAGS+= -DKLD_MODULE
71
e5d18209 72# Don't use any standard include directories.
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73# Since -nostdinc will annull any previous -I paths, we repeat all
74# such paths after -nostdinc. It doesn't seem to be possible to
75# add to the front of `make' variable.
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76#
77# Don't use -I- anymore, source-relative includes are desireable.
984263bc 78_ICFLAGS:= ${CFLAGS:M-I*}
e5d18209 79CFLAGS+= -nostdinc ${_ICFLAGS}
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80
81# Add -I paths for system headers. Individual KLD makefiles don't
82# need any -I paths for this. Similar defaults for .PATH can't be
83# set because there are no standard paths for non-headers.
84CFLAGS+= -I. -I@
85
86# Add a -I path to standard headers like <stddef.h>. Use a relative
87# path to src/include if possible. If the @ symlink hasn't been built
88# yet, then we can't tell if the relative path exists. Add both the
89# potential relative path and an absolute path in that case.
90.if exists(@)
91.if exists(@/../include)
92CFLAGS+= -I@/../include
93.else
94CFLAGS+= -I${DESTDIR}/usr/include
95.endif
96.else # !@
97CFLAGS+= -I@/../include -I${DESTDIR}/usr/include
98.endif # @
99
100CFLAGS+= ${DEBUG_FLAGS}
101
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102OBJS+= ${SRCS:N*.h:N*.patch:R:S/$/.o/g}
103.for _PATCH in ${SRCS:T:N*.h.patch:M*.patch}
104.for _OBJ in ${_PATCH:R:R:S/$/.o/}
105OBJS:= ${OBJS:N${_OBJ}} ${_OBJ}
106.endfor
107.endfor
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108
109.if !defined(PROG)
110PROG= ${KMOD}.ko
111.endif
112
113${PROG}: ${KMOD}.kld ${KMODDEPS}
984263bc 114 ${LD} -Bshareable ${LDFLAGS} -o ${.TARGET} ${KMOD}.kld ${KMODDEPS}
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115
116.if defined(KMODDEPS)
117.for dep in ${KMODDEPS}
118CLEANFILES+= ${dep} __${dep}_hack_dep.c
119
120${dep}:
121 touch __${dep}_hack_dep.c
122 ${CC} -shared ${CFLAGS} -o ${dep} __${dep}_hack_dep.c
123.endfor
124.endif
125
126${KMOD}.kld: ${OBJS}
127 ${LD} ${LDFLAGS} -r -o ${.TARGET} ${OBJS}
128
129.if !defined(NOMAN)
130.include <bsd.man.mk>
131.endif
132
133_ILINKS=@ machine
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134.if defined(ARCH)
135_ILINKS+=${ARCH}
136.endif
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137
138all: objwarn ${PROG}
139.if !defined(NOMAN)
140all: _manpages
141.endif
142
143beforedepend: ${_ILINKS}
144# Ensure that the links exist without depending on it when it exists which
145# causes all the modules to be rebuilt when the directory pointed to changes.
146.for _link in ${_ILINKS}
147.if !exists(${.OBJDIR}/${_link})
148${OBJS}: ${_link}
149.endif
150.endfor
151
152# Search for kernel source tree in standard places.
932f49b9 153.for _dir in ${.CURDIR}/../.. ${.CURDIR}/../../.. ${.CURDIR}/../../../.. /sys /usr/src/sys
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154.if !defined(SYSDIR) && exists(${_dir}/kern/)
155SYSDIR= ${_dir}
156.endif
157.endfor
158.if !defined(SYSDIR) || !exists(${SYSDIR}/kern)
159.error "can't find kernel source tree"
160.endif
161
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162# path=`(cd $$path && /bin/pwd)` ;
163
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164${_ILINKS}:
165 @case ${.TARGET} in \
166 machine) \
167 path=${SYSDIR}/${MACHINE_ARCH}/include ;; \
168 @) \
169 path=${SYSDIR} ;; \
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170 arch_*) \
171 path=${.CURDIR}/${MACHINE_ARCH} ;; \
984263bc 172 esac ; \
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173 ${ECHO} ${.TARGET} "->" $$path ; \
174 ln -s $$path ${.TARGET}
175
176CLEANFILES+= ${PROG} ${KMOD}.kld ${OBJS} ${_ILINKS} symb.tmp tmp.o
177
178.if !target(install)
179
180_INSTALLFLAGS:= ${INSTALLFLAGS}
181.for ie in ${INSTALLFLAGS_EDIT}
182_INSTALLFLAGS:= ${_INSTALLFLAGS${ie}}
183.endfor
184
185.if !target(realinstall)
186realinstall: _kmodinstall
187.ORDER: beforeinstall _kmodinstall
188_kmodinstall:
c2c83759 189.if defined(INSTALLSTRIPPEDMODULES)
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190 ${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
191 ${_INSTALLFLAGS} ${PROG} ${DESTDIR}${KMODDIR}
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192 ${OBJCOPY} --strip-debug ${DESTDIR}${KMODDIR}/${PROG}
193.else
194 ${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
195 ${_INSTALLFLAGS} ${PROG} ${DESTDIR}${KMODDIR}
196.endif
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197.endif !target(realinstall)
198
199.include <bsd.links.mk>
200
201.if !defined(NOMAN)
202realinstall: _maninstall
203.ORDER: beforeinstall _maninstall
204.endif
205
206.endif !target(install)
207
208.if !target(load)
209load: ${PROG}
210 ${KMODLOAD} -v ./${KMOD}.ko
211.endif
212
213.if !target(unload)
214unload:
215 ${KMODUNLOAD} -v ${KMOD}
216.endif
217
218.for _src in ${SRCS:Mopt_*.h}
219CLEANFILES+= ${_src}
220.if !target(${_src})
221${_src}:
222 touch ${.TARGET}
223.endif
224.endfor
225
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226MFILES?= kern/bus_if.m kern/device_if.m bus/iicbus/iicbb_if.m \
227 bus/iicbus/iicbus_if.m bus/isa/isa_if.m dev/netif/mii_layer/miibus_if.m \
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228 bus/pccard/card_if.m bus/pccard/power_if.m bus/pci/pci_if.m \
229 bus/pci/pcib_if.m \
1f2de5d4 230 bus/ppbus/ppbus_if.m bus/smbus/smbus_if.m bus/usb/usb_if.m \
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231 dev/sound/pcm/ac97_if.m dev/sound/pcm/channel_if.m \
232 dev/sound/pcm/feeder_if.m dev/sound/pcm/mixer_if.m \
6edd9ef2 233 libiconv/iconv_converter_if.m dev/agp/agp_if.m opencrypto/crypto_if.m \
1f2de5d4 234 bus/canbus/canbus_if.m
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235
236.for _srcsrc in ${MFILES}
237.for _ext in c h
238.for _src in ${SRCS:M${_srcsrc:T:R}.${_ext}}
239CLEANFILES+= ${_src}
240.if !target(${_src})
241${_src}: @
242.if exists(@)
be59a52f 243${_src}: @/tools/makeobjops.awk @/${_srcsrc}
984263bc 244.endif
145a9824 245 awk -f @/tools/makeobjops.awk -- -${_ext} @/${_srcsrc}
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246.endif
247.endfor # _src
248.endfor # _ext
249.endfor # _srcsrc
250
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251#.for _ext in c h
252#.if ${SRCS:Mvnode_if.${_ext}} != ""
253#CLEANFILES+= vnode_if.${_ext}
254#vnode_if.${_ext}: @
255#.if exists(@)
256#vnode_if.${_ext}: @/tools/vnode_if.awk @/kern/vnode_if.src
257#.endif
258# awk -f @/tools/vnode_if.awk -- -${_ext} @/kern/vnode_if.src
259#.endif
260#.endfor
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261
262regress:
263
264.include <bsd.dep.mk>
265
266.if !exists(${DEPENDFILE})
267${OBJS}: ${SRCS:M*.h}
268.endif
269
270.include <bsd.obj.mk>
5e9c1061 271.include "bsd.kern.mk"
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272
273# Behaves like MODULE_OVERRIDE
274.if defined(KLD_DEPS)
275all: _kdeps_all
276_kdeps_all: @
277.for _mdep in ${KLD_DEPS}
278 cd ${SYSDIR}/${_mdep} && make all
279.endfor
280depend: _kdeps_depend
281_kdeps_depend: @
282.for _mdep in ${KLD_DEPS}
283 cd ${SYSDIR}/${_mdep} && make depend
284.endfor
285install: _kdeps_install
286_kdeps_install: @
287.for _mdep in ${KLD_DEPS}
288 cd ${SYSDIR}/${_mdep} && make install
289.endfor
290clean: _kdeps_clean
291_kdeps_clean: @
292.for _mdep in ${KLD_DEPS}
293 cd ${SYSDIR}/${_mdep} && make clean
294.endfor
295.endif