FreeBSD/Linux Kernel Cross Reference
sys/conf/kmod.mk
1 # From: @(#)bsd.prog.mk 5.26 (Berkeley) 6/25/91
2 # $FreeBSD: releng/5.4/sys/conf/kmod.mk 145335 2005-04-20 19:11:07Z cvs2svn $
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
60 AWK?= awk
61 KMODLOAD?= /sbin/kldload
62 KMODUNLOAD?= /sbin/kldunload
63 OBJCOPY?= 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"
74 CFLAGS:= ${CFLAGS:C/(-x[^M^K^W]+)[MKW]+|-x[MKW]+/\1/}
75 .endif
76 . if !empty(CFLAGS:M-O[23s]) && empty(CFLAGS:M-fno-strict-aliasing)
77 CFLAGS+= -fno-strict-aliasing
78 . endif
79 CFLAGS+= -D_KERNEL
80 CFLAGS+= -DKLD_MODULE
81
82 # Don't use any standard or source-relative include directories.
83 # Since -nostdinc will annull any previous -I paths, we repeat all
84 # such paths after -nostdinc. It doesn't seem to be possible to
85 # add to the front of `make' variable.
86 _ICFLAGS:= ${CFLAGS:M-I*}
87 .if ${CC} == "icc"
88 NOSTDINC= -X
89 .else
90 NOSTDINC= -nostdinc
91 .endif
92 CFLAGS+= ${NOSTDINC} -I- ${INCLMAGIC} ${_ICFLAGS}
93 .if defined(KERNBUILDDIR)
94 CFLAGS+= -include ${KERNBUILDDIR}/opt_global.h
95 .endif
96
97 # Add -I paths for system headers. Individual KLD makefiles don't
98 # need any -I paths for this. Similar defaults for .PATH can't be
99 # set because there are no standard paths for non-headers.
100 CFLAGS+= -I. -I@
101
102 # Add -I path for altq headers as they are included via net/if_var.h
103 # for example.
104 CFLAGS+= -I@/contrib/altq
105
106 # Add a -I path to standard headers like <stddef.h>. Use a relative
107 # path to src/include if possible. If the @ symlink hasn't been built
108 # yet, then we can't tell if the relative path exists. Add both the
109 # potential relative path and an absolute path in that case.
110 .if exists(@)
111 .if exists(@/../include)
112 CFLAGS+= -I@/../include
113 .else
114 CFLAGS+= -I${DESTDIR}/usr/include
115 .endif
116 .else # !@
117 CFLAGS+= -I@/../include -I${DESTDIR}/usr/include
118 .endif # @
119
120 .if ${CC} != "icc"
121 CFLAGS+= -finline-limit=${INLINE_LIMIT}
122 .endif
123
124 # Disallow common variables, and if we end up with commons from
125 # somewhere unexpected, allocate storage for them in the module itself.
126 .if ${CC} != "icc"
127 CFLAGS+= -fno-common
128 .endif
129 LDFLAGS+= -d -warn-common
130
131 CFLAGS+= ${DEBUG_FLAGS}
132
133 OBJS+= ${SRCS:N*.h:R:S/$/.o/g}
134
135 .if !defined(PROG)
136 PROG= ${KMOD}.ko
137 .endif
138
139 .if !defined(DEBUG_FLAGS)
140 FULLPROG= ${PROG}
141 .else
142 FULLPROG= ${PROG}.debug
143 ${PROG}: ${FULLPROG}
144 ${OBJCOPY} --strip-debug ${FULLPROG} ${PROG}
145 .endif
146
147 .if ${MACHINE_ARCH} != amd64
148 ${FULLPROG}: ${KMOD}.kld
149 ${LD} -Bshareable ${LDFLAGS} -o ${.TARGET} ${KMOD}.kld
150 .if !defined(DEBUG_FLAGS)
151 ${OBJCOPY} --strip-debug ${.TARGET}
152 .endif
153 .endif
154
155 EXPORT_SYMS?= NO
156 .if ${EXPORT_SYMS} != YES
157 CLEANFILES+= ${.OBJDIR}/export_syms
158 .endif
159
160 .if ${MACHINE_ARCH} != amd64
161 ${KMOD}.kld: ${OBJS}
162 .else
163 ${FULLPROG}: ${OBJS}
164 .endif
165 ${LD} ${LDFLAGS} -r -d -o ${.TARGET} ${OBJS}
166 .if defined(EXPORT_SYMS)
167 .if ${EXPORT_SYMS} != YES
168 .if ${EXPORT_SYMS} == NO
169 touch ${.OBJDIR}/export_syms
170 .elif !exists(${.CURDIR}/${EXPORT_SYMS})
171 echo ${EXPORT_SYMS} > ${.OBJDIR}/export_syms
172 .else
173 grep -v '^#' < ${EXPORT_SYMS} > ${.OBJDIR}/export_syms
174 .endif
175 awk -f ${SYSDIR}/conf/kmod_syms.awk ${.TARGET} \
176 ${.OBJDIR}/export_syms | \
177 xargs -J% ${OBJCOPY} % ${.TARGET}
178 .endif
179 .endif
180 .if !defined(DEBUG_FLAGS) && ${MACHINE_ARCH} == amd64
181 ${OBJCOPY} --strip-debug ${.TARGET}
182 .endif
183
184 _ILINKS=@ machine
185
186 all: objwarn ${PROG}
187
188 beforedepend: ${_ILINKS}
189 @rm -f .depend
190
191 # Ensure that the links exist without depending on it when it exists which
192 # causes all the modules to be rebuilt when the directory pointed to changes.
193 .for _link in ${_ILINKS}
194 .if !exists(${.OBJDIR}/${_link})
195 ${OBJS}: ${_link}
196 .endif
197 .endfor
198
199 # Search for kernel source tree in standard places.
200 .for _dir in ${.CURDIR}/../.. ${.CURDIR}/../../.. /sys /usr/src/sys
201 .if !defined(SYSDIR) && exists(${_dir}/kern/)
202 SYSDIR= ${_dir}
203 .endif
204 .endfor
205 .if !defined(SYSDIR) || !exists(${SYSDIR}/kern/)
206 .error "can't find kernel source tree"
207 .endif
208
209 ${_ILINKS}:
210 @case ${.TARGET} in \
211 machine) \
212 path=${SYSDIR}/${MACHINE_ARCH}/include ;; \
213 @) \
214 path=${SYSDIR} ;; \
215 esac ; \
216 path=`(cd $$path && /bin/pwd)` ; \
217 ${ECHO} ${.TARGET} "->" $$path ; \
218 ln -s $$path ${.TARGET}
219
220 CLEANFILES+= ${PROG} ${KMOD}.kld ${OBJS} ${_ILINKS} symb.tmp tmp.o
221
222 .if defined(DEBUG_FLAGS)
223 CLEANFILES+= ${FULLPROG}
224 .endif
225
226 .if !target(install)
227
228 _INSTALLFLAGS:= ${INSTALLFLAGS}
229 .for ie in ${INSTALLFLAGS_EDIT}
230 _INSTALLFLAGS:= ${_INSTALLFLAGS${ie}}
231 .endfor
232
233 .if defined(DEBUG_FLAGS)
234 install.debug:
235 cd ${.CURDIR}; ${MAKE} -DINSTALL_DEBUG install
236 .endif
237
238 .if !target(realinstall)
239 realinstall: _kmodinstall
240 .ORDER: beforeinstall _kmodinstall
241 _kmodinstall:
242 .if defined(DEBUG_FLAGS) && defined(INSTALL_DEBUG)
243 ${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
244 ${_INSTALLFLAGS} ${FULLPROG} ${DESTDIR}${KMODDIR}
245 .else
246 ${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
247 ${_INSTALLFLAGS} ${PROG} ${DESTDIR}${KMODDIR}
248
249 .include <bsd.links.mk>
250
251 .if !defined(NO_XREF)
252 afterinstall: _kldxref
253 .ORDER: realinstall _kldxref
254 .ORDER: _installlinks _kldxref
255 _kldxref:
256 @if type kldxref >/dev/null 2>&1; then \
257 ${ECHO} kldxref ${DESTDIR}${KMODDIR}; \
258 kldxref ${DESTDIR}${KMODDIR}; \
259 fi
260 .endif
261 .endif
262 .endif !target(realinstall)
263
264 .endif !target(install)
265
266 .if !target(load)
267 load: ${PROG}
268 ${KMODLOAD} -v ${.OBJDIR}/${KMOD}.ko
269 .endif
270
271 .if !target(unload)
272 unload:
273 ${KMODUNLOAD} -v ${KMOD}
274 .endif
275
276 .if defined(KERNBUILDDIR)
277 .PATH: ${KERNBUILDDIR}
278 CFLAGS += -I${KERNBUILDDIR}
279 .for _src in ${SRCS:Mopt_*.h}
280 CLEANFILES+= ${_src}
281 .if !target(${_src})
282 ${_src}:
283 ln -s ${KERNBUILDDIR}/${_src} ${.TARGET}
284 .endif
285 .endfor
286 .else
287 .for _src in ${SRCS:Mopt_*.h}
288 CLEANFILES+= ${_src}
289 .if !target(${_src})
290 ${_src}:
291 touch ${.TARGET}
292 .endif
293 .endfor
294 .endif
295
296 MFILES?= dev/acpica/acpi_if.m dev/eisa/eisa_if.m dev/iicbus/iicbb_if.m \
297 dev/iicbus/iicbus_if.m dev/mii/miibus_if.m dev/ofw/ofw_bus_if.m \
298 dev/pccard/card_if.m dev/pccard/power_if.m dev/pci/pci_if.m \
299 dev/pci/pcib_if.m dev/ppbus/ppbus_if.m dev/smbus/smbus_if.m \
300 dev/sound/pcm/ac97_if.m dev/sound/pcm/channel_if.m \
301 dev/sound/pcm/feeder_if.m dev/sound/pcm/mixer_if.m dev/uart/uart_if.m \
302 dev/usb/usb_if.m isa/isa_if.m \
303 kern/bus_if.m kern/cpufreq_if.m kern/device_if.m \
304 libkern/iconv_converter_if.m opencrypto/crypto_if.m \
305 pc98/pc98/canbus_if.m pci/agp_if.m sparc64/pci/ofw_pci_if.m
306
307 .for _srcsrc in ${MFILES}
308 .for _ext in c h
309 .for _src in ${SRCS:M${_srcsrc:T:R}.${_ext}}
310 CLEANFILES+= ${_src}
311 .if !target(${_src})
312 .if !exists(@)
313 ${_src}: @
314 .endif
315 .if exists(@)
316 ${_src}: @/tools/makeobjops.awk @/${_srcsrc}
317 .endif
318 ${AWK} -f @/tools/makeobjops.awk @/${_srcsrc} -${_ext}
319 .endif
320 .endfor # _src
321 .endfor # _ext
322 .endfor # _srcsrc
323
324 .for _ext in c h
325 .if ${SRCS:Mvnode_if.${_ext}} != ""
326 CLEANFILES+= vnode_if.${_ext}
327 .if !exists(@)
328 vnode_if.${_ext}: @
329 .endif
330 .if exists(@)
331 vnode_if.${_ext}: @/tools/vnode_if.awk @/kern/vnode_if.src
332 .endif
333 ${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -${_ext}
334 .endif
335 .endfor
336
337 .for _i in mii pccard usb
338 .if ${SRCS:M${_i}devs.h} != ""
339 CLEANFILES+= ${_i}devs.h
340 .if !exists(@)
341 ${_i}devs.h: @
342 .endif
343 .if exists(@)
344 ${_i}devs.h: @/tools/${_i}devs2h.awk @/dev/${_i}/${_i}devs
345 .endif
346 ${AWK} -f @/tools/${_i}devs2h.awk @/dev/${_i}/${_i}devs
347 .endif
348 .endfor # _i
349
350 .if ${SRCS:Macpi_quirks.h} != ""
351 CLEANFILES+= acpi_quirks.h
352 .if !exists(@)
353 acpi_quirks.h: @
354 .endif
355 .if exists(@)
356 acpi_quirks.h: @/tools/acpi_quirks2h.awk @/dev/acpica/acpi_quirks
357 .endif
358 ${AWK} -f @/tools/acpi_quirks2h.awk @/dev/acpica/acpi_quirks
359 .endif
360
361 regress:
362
363 lint: ${SRCS}
364 ${LINT} ${LINTKERNFLAGS} ${CFLAGS:M-[DILU]*} ${.ALLSRC:M*.c}
365
366 .include <bsd.dep.mk>
367
368 .if !exists(${.OBJDIR}/${DEPENDFILE})
369 ${OBJS}: ${SRCS:M*.h}
370 .endif
371
372 .include <bsd.obj.mk>
373 .include "kern.mk"
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