FreeBSD/Linux Kernel Cross Reference
sys/conf/kmod.mk
1 # From: @(#)bsd.prog.mk 5.26 (Berkeley) 6/25/91
2 # $FreeBSD: releng/10.1/sys/conf/kmod.mk 265169 2014-05-01 03:18:11Z markj $
3 #
4 # The include file <bsd.kmod.mk> handles building and installing loadable
5 # kernel modules.
6 #
7 #
8 # +++ variables +++
9 #
10 # CLEANFILES Additional files to remove for the clean and cleandir targets.
11 #
12 # EXPORT_SYMS A list of symbols that should be exported from the module,
13 # or the name of a file containing a list of symbols, or YES
14 # to export all symbols. If not defined, no symbols are
15 # exported.
16 #
17 # KMOD The name of the kernel module to build.
18 #
19 # KMODDIR Base path for kernel modules (see kld(4)). [/boot/kernel]
20 #
21 # KMODOWN Module file owner. [${BINOWN}]
22 #
23 # KMODGRP Module file group. [${BINGRP}]
24 #
25 # KMODMODE Module file mode. [${BINMODE}]
26 #
27 # KMODLOAD Command to load a kernel module [/sbin/kldload]
28 #
29 # KMODUNLOAD Command to unload a kernel module [/sbin/kldunload]
30 #
31 # MFILES Optionally a list of interfaces used by the module.
32 # This file contains a default list of interfaces.
33 #
34 # PROG The name of the kernel module to build.
35 # If not supplied, ${KMOD}.ko is used.
36 #
37 # SRCS List of source files.
38 #
39 # FIRMWS List of firmware images in format filename:shortname:version
40 #
41 # FIRMWARE_LICENSE
42 # Set to the name of the license the user has to agree on in
43 # order to use this firmware. See /usr/share/doc/legal
44 #
45 # DESTDIR The tree where the module gets installed. [not set]
46 #
47 # +++ targets +++
48 #
49 # install:
50 # install the kernel module; if the Makefile
51 # does not itself define the target install, the targets
52 # beforeinstall and afterinstall may also be used to cause
53 # actions immediately before and after the install target
54 # is executed.
55 #
56 # load:
57 # Load a module.
58 #
59 # unload:
60 # Unload a module.
61 #
62
63 # backwards compat option for older systems.
64 MACHINE_CPUARCH?=${MACHINE_ARCH:C/mips(n32|64)?(el)?/mips/:C/arm(v6)?(eb)?/arm/:C/powerpc64/powerpc/}
65
66 AWK?= awk
67 KMODLOAD?= /sbin/kldload
68 KMODUNLOAD?= /sbin/kldunload
69 OBJCOPY?= objcopy
70
71 .if defined(KMODDEPS)
72 .error "Do not use KMODDEPS on 5.0+; use MODULE_VERSION/MODULE_DEPEND"
73 .endif
74
75 .include <bsd.init.mk>
76 .include <bsd.compiler.mk>
77
78 .SUFFIXES: .out .o .c .cc .cxx .C .y .l .s .S
79
80 # amd64 and mips use direct linking for kmod, all others use shared binaries
81 .if ${MACHINE_CPUARCH} != amd64 && ${MACHINE_CPUARCH} != mips
82 __KLD_SHARED=yes
83 .else
84 __KLD_SHARED=no
85 .endif
86
87 .if !empty(CFLAGS:M-O[23s]) && empty(CFLAGS:M-fno-strict-aliasing)
88 CFLAGS+= -fno-strict-aliasing
89 .endif
90 WERROR?= -Werror
91 CFLAGS+= ${WERROR}
92 CFLAGS+= -D_KERNEL
93 CFLAGS+= -DKLD_MODULE
94
95 # Don't use any standard or source-relative include directories.
96 CSTD= c99
97 NOSTDINC= -nostdinc
98 CFLAGS:= ${CFLAGS:N-I*} ${NOSTDINC} ${INCLMAGIC} ${CFLAGS:M-I*}
99 .if defined(KERNBUILDDIR)
100 CFLAGS+= -DHAVE_KERNEL_OPTION_HEADERS -include ${KERNBUILDDIR}/opt_global.h
101 .endif
102
103 # Add -I paths for system headers. Individual module 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.
106 CFLAGS+= -I. -I@
107
108 # Add -I path for altq headers as they are included via net/if_var.h
109 # for example.
110 CFLAGS+= -I@/contrib/altq
111
112 .if ${COMPILER_TYPE} != "clang"
113 CFLAGS+= -finline-limit=${INLINE_LIMIT}
114 CFLAGS+= --param inline-unit-growth=100
115 CFLAGS+= --param large-function-growth=1000
116 .endif
117
118 # Disallow common variables, and if we end up with commons from
119 # somewhere unexpected, allocate storage for them in the module itself.
120 CFLAGS+= -fno-common
121 LDFLAGS+= -d -warn-common
122
123 CFLAGS+= ${DEBUG_FLAGS}
124 .if ${MACHINE_CPUARCH} == amd64
125 CFLAGS+= -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer
126 .endif
127
128 .if ${MACHINE_CPUARCH} == powerpc
129 CFLAGS+= -mlongcall -fno-omit-frame-pointer
130 .endif
131
132 .if ${MACHINE_CPUARCH} == mips
133 CFLAGS+= -G0 -fno-pic -mno-abicalls -mlong-calls
134 .endif
135
136 .if defined(DEBUG) || defined(DEBUG_FLAGS)
137 CTFFLAGS+= -g
138 .endif
139
140 .if defined(FIRMWS)
141 .if !exists(@)
142 ${KMOD:S/$/.c/}: @
143 .else
144 ${KMOD:S/$/.c/}: @/tools/fw_stub.awk
145 .endif
146 ${AWK} -f @/tools/fw_stub.awk ${FIRMWS} -m${KMOD} -c${KMOD:S/$/.c/g} \
147 ${FIRMWARE_LICENSE:C/.+/-l/}${FIRMWARE_LICENSE}
148
149 SRCS+= ${KMOD:S/$/.c/}
150 CLEANFILES+= ${KMOD:S/$/.c/}
151
152 .for _firmw in ${FIRMWS}
153 ${_firmw:C/\:.*$/.fwo/}: ${_firmw:C/\:.*$//}
154 @${ECHO} ${_firmw:C/\:.*$//} ${.ALLSRC:M*${_firmw:C/\:.*$//}}
155 @if [ -e ${_firmw:C/\:.*$//} ]; then \
156 ${LD} -b binary --no-warn-mismatch ${LDFLAGS} \
157 -r -d -o ${.TARGET} ${_firmw:C/\:.*$//}; \
158 else \
159 ln -s ${.ALLSRC:M*${_firmw:C/\:.*$//}} ${_firmw:C/\:.*$//}; \
160 ${LD} -b binary --no-warn-mismatch ${LDFLAGS} \
161 -r -d -o ${.TARGET} ${_firmw:C/\:.*$//}; \
162 rm ${_firmw:C/\:.*$//}; \
163 fi
164
165 OBJS+= ${_firmw:C/\:.*$/.fwo/}
166 .endfor
167 .endif
168
169 OBJS+= ${SRCS:N*.h:R:S/$/.o/g}
170
171 .if !defined(PROG)
172 PROG= ${KMOD}.ko
173 .endif
174
175 .if !defined(DEBUG_FLAGS)
176 FULLPROG= ${PROG}
177 .else
178 FULLPROG= ${PROG}.debug
179 ${PROG}: ${FULLPROG} ${PROG}.symbols
180 ${OBJCOPY} --strip-debug --add-gnu-debuglink=${PROG}.symbols\
181 ${FULLPROG} ${.TARGET}
182 ${PROG}.symbols: ${FULLPROG}
183 ${OBJCOPY} --only-keep-debug ${FULLPROG} ${.TARGET}
184 .endif
185
186 .if ${__KLD_SHARED} == yes
187 ${FULLPROG}: ${KMOD}.kld
188 ${LD} -Bshareable ${LDFLAGS} -o ${.TARGET} ${KMOD}.kld
189 .if !defined(DEBUG_FLAGS)
190 ${OBJCOPY} --strip-debug ${.TARGET}
191 .endif
192 .endif
193
194 EXPORT_SYMS?= NO
195 .if ${EXPORT_SYMS} != YES
196 CLEANFILES+= export_syms
197 .endif
198
199 .if ${__KLD_SHARED} == yes
200 ${KMOD}.kld: ${OBJS}
201 .else
202 ${FULLPROG}: ${OBJS}
203 .endif
204 ${LD} ${LDFLAGS} -r -d -o ${.TARGET} ${OBJS}
205 .if defined(MK_CTF) && ${MK_CTF} != "no"
206 ${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ${OBJS}
207 .endif
208 .if defined(EXPORT_SYMS)
209 .if ${EXPORT_SYMS} != YES
210 .if ${EXPORT_SYMS} == NO
211 :> export_syms
212 .elif !exists(${.CURDIR}/${EXPORT_SYMS})
213 echo ${EXPORT_SYMS} > export_syms
214 .else
215 grep -v '^#' < ${EXPORT_SYMS} > export_syms
216 .endif
217 awk -f ${SYSDIR}/conf/kmod_syms.awk ${.TARGET} \
218 export_syms | xargs -J% ${OBJCOPY} % ${.TARGET}
219 .endif
220 .endif
221 .if !defined(DEBUG_FLAGS) && ${__KLD_SHARED} == no
222 ${OBJCOPY} --strip-debug ${.TARGET}
223 .endif
224
225 _ILINKS=@ machine
226 .if ${MACHINE} != ${MACHINE_CPUARCH}
227 _ILINKS+=${MACHINE_CPUARCH}
228 .endif
229 .if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
230 _ILINKS+=x86
231 .endif
232
233 all: objwarn ${PROG}
234
235 beforedepend: ${_ILINKS}
236
237 # Ensure that the links exist without depending on it when it exists which
238 # causes all the modules to be rebuilt when the directory pointed to changes.
239 .for _link in ${_ILINKS}
240 .if !exists(${.OBJDIR}/${_link})
241 ${OBJS}: ${.OBJDIR}/${_link}
242 .endif
243 .endfor
244
245 # Search for kernel source tree in standard places.
246 .for _dir in ${.CURDIR}/../.. ${.CURDIR}/../../.. /sys /usr/src/sys
247 .if !defined(SYSDIR) && exists(${_dir}/kern/)
248 SYSDIR= ${_dir}
249 .endif
250 .endfor
251 .if !defined(SYSDIR) || !exists(${SYSDIR}/kern/)
252 .error "can't find kernel source tree"
253 .endif
254
255 .for _link in ${_ILINKS}
256 .PHONY: ${_link}
257 ${_link}: ${.OBJDIR}/${_link}
258
259 ${.OBJDIR}/${_link}:
260 @case ${.TARGET:T} in \
261 machine) \
262 path=${SYSDIR}/${MACHINE}/include ;; \
263 @) \
264 path=${SYSDIR} ;; \
265 *) \
266 path=${SYSDIR}/${.TARGET:T}/include ;; \
267 esac ; \
268 path=`(cd $$path && /bin/pwd)` ; \
269 ${ECHO} ${.TARGET:T} "->" $$path ; \
270 ln -sf $$path ${.TARGET:T}
271 .endfor
272
273 CLEANFILES+= ${PROG} ${KMOD}.kld ${OBJS}
274
275 .if defined(DEBUG_FLAGS)
276 CLEANFILES+= ${FULLPROG} ${PROG}.symbols
277 .endif
278
279 .if !target(install)
280
281 _INSTALLFLAGS:= ${INSTALLFLAGS}
282 .for ie in ${INSTALLFLAGS_EDIT}
283 _INSTALLFLAGS:= ${_INSTALLFLAGS${ie}}
284 .endfor
285
286 .if !target(realinstall)
287 realinstall: _kmodinstall
288 .ORDER: beforeinstall _kmodinstall
289 _kmodinstall:
290 ${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
291 ${_INSTALLFLAGS} ${PROG} ${DESTDIR}${KMODDIR}
292 .if defined(DEBUG_FLAGS) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no"
293 ${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
294 ${_INSTALLFLAGS} ${PROG}.symbols ${DESTDIR}${KMODDIR}
295 .endif
296
297 .include <bsd.links.mk>
298
299 .if !defined(NO_XREF)
300 afterinstall: _kldxref
301 .ORDER: realinstall _kldxref
302 .ORDER: _installlinks _kldxref
303 _kldxref:
304 @if type kldxref >/dev/null 2>&1; then \
305 ${ECHO} kldxref ${DESTDIR}${KMODDIR}; \
306 kldxref ${DESTDIR}${KMODDIR}; \
307 fi
308 .endif
309 .endif # !target(realinstall)
310
311 .endif # !target(install)
312
313 .if !target(load)
314 load: ${PROG}
315 ${KMODLOAD} -v ${.OBJDIR}/${PROG}
316 .endif
317
318 .if !target(unload)
319 unload:
320 ${KMODUNLOAD} -v ${PROG}
321 .endif
322
323 .if defined(KERNBUILDDIR)
324 .PATH: ${KERNBUILDDIR}
325 CFLAGS+= -I${KERNBUILDDIR}
326 .for _src in ${SRCS:Mopt_*.h}
327 CLEANFILES+= ${_src}
328 .if !target(${_src})
329 ${_src}:
330 ln -sf ${KERNBUILDDIR}/${_src} ${.TARGET}
331 .endif
332 .endfor
333 .else
334 .for _src in ${SRCS:Mopt_*.h}
335 CLEANFILES+= ${_src}
336 .if !target(${_src})
337 ${_src}:
338 :> ${.TARGET}
339 .endif
340 .endfor
341 .endif
342
343 # Respect configuration-specific C flags.
344 CFLAGS+= ${CONF_CFLAGS}
345
346 MFILES?= dev/acpica/acpi_if.m dev/acpi_support/acpi_wmi_if.m \
347 dev/agp/agp_if.m dev/ata/ata_if.m dev/eisa/eisa_if.m \
348 dev/fb/fb_if.m dev/gpio/gpio_if.m dev/gpio/gpiobus_if.m \
349 dev/iicbus/iicbb_if.m dev/iicbus/iicbus_if.m \
350 dev/mmc/mmcbr_if.m dev/mmc/mmcbus_if.m \
351 dev/mii/miibus_if.m dev/mvs/mvs_if.m dev/ofw/ofw_bus_if.m \
352 dev/pccard/card_if.m dev/pccard/power_if.m dev/pci/pci_if.m \
353 dev/pci/pcib_if.m dev/ppbus/ppbus_if.m \
354 dev/sdhci/sdhci_if.m dev/smbus/smbus_if.m dev/spibus/spibus_if.m \
355 dev/sound/pci/hda/hdac_if.m \
356 dev/sound/pcm/ac97_if.m dev/sound/pcm/channel_if.m \
357 dev/sound/pcm/feeder_if.m dev/sound/pcm/mixer_if.m \
358 dev/sound/midi/mpu_if.m dev/sound/midi/mpufoi_if.m \
359 dev/sound/midi/synth_if.m dev/usb/usb_if.m isa/isa_if.m \
360 kern/bus_if.m kern/clock_if.m \
361 kern/cpufreq_if.m kern/device_if.m kern/serdev_if.m \
362 libkern/iconv_converter_if.m opencrypto/cryptodev_if.m \
363 pc98/pc98/canbus_if.m dev/etherswitch/mdio_if.m
364
365 .for _srcsrc in ${MFILES}
366 .for _ext in c h
367 .for _src in ${SRCS:M${_srcsrc:T:R}.${_ext}}
368 CLEANFILES+= ${_src}
369 .if !target(${_src})
370 .if !exists(@)
371 ${_src}: @
372 .else
373 ${_src}: @/tools/makeobjops.awk @/${_srcsrc}
374 .endif
375 ${AWK} -f @/tools/makeobjops.awk @/${_srcsrc} -${_ext}
376 .endif
377 .endfor # _src
378 .endfor # _ext
379 .endfor # _srcsrc
380
381 .if !empty(SRCS:Mvnode_if.c)
382 CLEANFILES+= vnode_if.c
383 .if !exists(@)
384 vnode_if.c: @
385 .else
386 vnode_if.c: @/tools/vnode_if.awk @/kern/vnode_if.src
387 .endif
388 ${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -c
389 .endif
390
391 .if !empty(SRCS:Mvnode_if.h)
392 CLEANFILES+= vnode_if.h vnode_if_newproto.h vnode_if_typedef.h
393 .if !exists(@)
394 vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: @
395 .else
396 vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: @/tools/vnode_if.awk \
397 @/kern/vnode_if.src
398 .endif
399 vnode_if.h: vnode_if_newproto.h vnode_if_typedef.h
400 ${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -h
401 vnode_if_newproto.h:
402 ${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -p
403 vnode_if_typedef.h:
404 ${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -q
405 .endif
406
407 .for _i in mii pccard
408 .if !empty(SRCS:M${_i}devs.h)
409 CLEANFILES+= ${_i}devs.h
410 .if !exists(@)
411 ${_i}devs.h: @
412 .else
413 ${_i}devs.h: @/tools/${_i}devs2h.awk @/dev/${_i}/${_i}devs
414 .endif
415 ${AWK} -f @/tools/${_i}devs2h.awk @/dev/${_i}/${_i}devs
416 .endif
417 .endfor # _i
418
419 .if !empty(SRCS:Musbdevs.h)
420 CLEANFILES+= usbdevs.h
421 .if !exists(@)
422 usbdevs.h: @
423 .else
424 usbdevs.h: @/tools/usbdevs2h.awk @/dev/usb/usbdevs
425 .endif
426 ${AWK} -f @/tools/usbdevs2h.awk @/dev/usb/usbdevs -h
427 .endif
428
429 .if !empty(SRCS:Musbdevs_data.h)
430 CLEANFILES+= usbdevs_data.h
431 .if !exists(@)
432 usbdevs_data.h: @
433 .else
434 usbdevs_data.h: @/tools/usbdevs2h.awk @/dev/usb/usbdevs
435 .endif
436 ${AWK} -f @/tools/usbdevs2h.awk @/dev/usb/usbdevs -d
437 .endif
438
439 .if !empty(SRCS:Macpi_quirks.h)
440 CLEANFILES+= acpi_quirks.h
441 .if !exists(@)
442 acpi_quirks.h: @
443 .else
444 acpi_quirks.h: @/tools/acpi_quirks2h.awk @/dev/acpica/acpi_quirks
445 .endif
446 ${AWK} -f @/tools/acpi_quirks2h.awk @/dev/acpica/acpi_quirks
447 .endif
448
449 .if !empty(SRCS:Massym.s)
450 CLEANFILES+= assym.s genassym.o
451 assym.s: genassym.o
452 .if defined(KERNBUILDDIR)
453 genassym.o: opt_global.h
454 .endif
455 .if !exists(@)
456 assym.s: @
457 .else
458 assym.s: @/kern/genassym.sh
459 .endif
460 sh @/kern/genassym.sh genassym.o > ${.TARGET}
461 .if exists(@)
462 genassym.o: @/${MACHINE_CPUARCH}/${MACHINE_CPUARCH}/genassym.c
463 .endif
464 genassym.o: @ machine ${SRCS:Mopt_*.h}
465 ${CC} -c ${CFLAGS:N-fno-common} \
466 @/${MACHINE_CPUARCH}/${MACHINE_CPUARCH}/genassym.c
467 .endif
468
469 lint: ${SRCS}
470 ${LINT} ${LINTKERNFLAGS} ${CFLAGS:M-[DILU]*} ${.ALLSRC:M*.c}
471
472 .if defined(KERNBUILDDIR)
473 ${OBJS}: opt_global.h
474 .endif
475
476 .include <bsd.dep.mk>
477
478 cleandepend: cleanilinks
479 # .depend needs include links so we remove them only together.
480 cleanilinks:
481 rm -f ${_ILINKS}
482
483 .if !exists(${.OBJDIR}/${DEPENDFILE})
484 ${OBJS}: ${SRCS:M*.h}
485 .endif
486
487 .include <bsd.obj.mk>
488 .include "kern.mk"
Cache object: 59570fe45989e762a2e44d1d4d0dbc92
|