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Merge ^/head r278756 through r278915.
[FreeBSD/FreeBSD.git] / sys / conf / kmod.mk
1 #       From: @(#)bsd.prog.mk   5.26 (Berkeley) 6/25/91
2 # $FreeBSD$
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 AWK?=           awk
64 KMODLOAD?=      /sbin/kldload
65 KMODUNLOAD?=    /sbin/kldunload
66 OBJCOPY?=       objcopy
67
68 .include <bsd.init.mk>
69 # Grab all the options for a kernel build. For backwards compat, we need to
70 # do this after bsd.own.mk.
71 .include "kern.opts.mk"
72 .include <bsd.compiler.mk>
73
74 .SUFFIXES: .out .o .c .cc .cxx .C .y .l .s .S
75
76 # amd64 and mips use direct linking for kmod, all others use shared binaries
77 .if ${MACHINE_CPUARCH} != amd64 && ${MACHINE_CPUARCH} != mips
78 __KLD_SHARED=yes
79 .else
80 __KLD_SHARED=no
81 .endif
82
83 .if !empty(CFLAGS:M-O[23s]) && empty(CFLAGS:M-fno-strict-aliasing)
84 CFLAGS+=        -fno-strict-aliasing
85 .endif
86 WERROR?=        -Werror
87 CFLAGS+=        ${WERROR}
88 CFLAGS+=        -D_KERNEL
89 CFLAGS+=        -DKLD_MODULE
90
91 # Don't use any standard or source-relative include directories.
92 NOSTDINC=       -nostdinc
93 CFLAGS:=        ${CFLAGS:N-I*} ${NOSTDINC} ${INCLMAGIC} ${CFLAGS:M-I*}
94 .if defined(KERNBUILDDIR)
95 CFLAGS+=        -DHAVE_KERNEL_OPTION_HEADERS -include ${KERNBUILDDIR}/opt_global.h
96 .endif
97
98 # Add -I paths for system headers.  Individual module makefiles don't
99 # need any -I paths for this.  Similar defaults for .PATH can't be
100 # set because there are no standard paths for non-headers.
101 CFLAGS+=        -I. -I${SYSDIR}
102
103 # Add -I path for altq headers as they are included via net/if_var.h
104 # for example.
105 CFLAGS+=        -I${SYSDIR}/contrib/altq
106
107 CFLAGS.gcc+=    -finline-limit=${INLINE_LIMIT}
108 CFLAGS.gcc+=    -fms-extensions
109 CFLAGS.gcc+= --param inline-unit-growth=100
110 CFLAGS.gcc+= --param large-function-growth=1000
111
112 # Disallow common variables, and if we end up with commons from
113 # somewhere unexpected, allocate storage for them in the module itself.
114 CFLAGS+=        -fno-common
115 LDFLAGS+=       -d -warn-common
116
117 CFLAGS+=        ${DEBUG_FLAGS}
118 .if ${MACHINE_CPUARCH} == amd64
119 CFLAGS+=        -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer
120 .endif
121
122 # Temporary workaround for PR 196407, which contains the fascinating details.
123 # Don't allow clang to use fpu instructions or registers in kernel modules.
124 .if ${MACHINE_CPUARCH} == arm
125 CFLAGS.clang+=  -mllvm -arm-use-movt=0
126 CFLAGS.clang+=  -mfpu=none
127 .endif
128
129 .if ${MACHINE_CPUARCH} == powerpc
130 CFLAGS+=        -mlongcall -fno-omit-frame-pointer
131 .endif
132
133 .if ${MACHINE_CPUARCH} == mips
134 CFLAGS+=        -G0 -fno-pic -mno-abicalls -mlong-calls
135 .endif
136
137 .if defined(DEBUG) || defined(DEBUG_FLAGS)
138 CTFFLAGS+=      -g
139 .endif
140
141 .if defined(FIRMWS)
142 ${KMOD:S/$/.c/}: ${SYSDIR}/tools/fw_stub.awk
143         ${AWK} -f ${SYSDIR}/tools/fw_stub.awk ${FIRMWS} -m${KMOD} -c${KMOD:S/$/.c/g} \
144             ${FIRMWARE_LICENSE:C/.+/-l/}${FIRMWARE_LICENSE}
145
146 SRCS+=  ${KMOD:S/$/.c/}
147 CLEANFILES+=    ${KMOD:S/$/.c/}
148
149 .for _firmw in ${FIRMWS}
150 ${_firmw:C/\:.*$/.fwo/}:        ${_firmw:C/\:.*$//}
151         @${ECHO} ${_firmw:C/\:.*$//} ${.ALLSRC:M*${_firmw:C/\:.*$//}}
152         @if [ -e ${_firmw:C/\:.*$//} ]; then                    \
153                 ${LD} -b binary --no-warn-mismatch ${_LDFLAGS}  \
154                     -r -d -o ${.TARGET} ${_firmw:C/\:.*$//};    \
155         else                                                    \
156                 ln -s ${.ALLSRC:M*${_firmw:C/\:.*$//}} ${_firmw:C/\:.*$//}; \
157                 ${LD} -b binary --no-warn-mismatch ${_LDFLAGS}  \
158                     -r -d -o ${.TARGET} ${_firmw:C/\:.*$//};    \
159                 rm ${_firmw:C/\:.*$//};                         \
160         fi
161
162 OBJS+=  ${_firmw:C/\:.*$/.fwo/}
163 .endfor
164 .endif
165
166 OBJS+=  ${SRCS:N*.h:R:S/$/.o/g}
167
168 .if !defined(PROG)
169 PROG=   ${KMOD}.ko
170 .endif
171
172 .if !defined(DEBUG_FLAGS)
173 FULLPROG=       ${PROG}
174 .else
175 FULLPROG=       ${PROG}.debug
176 ${PROG}: ${FULLPROG} ${PROG}.symbols
177         ${OBJCOPY} --strip-debug --add-gnu-debuglink=${PROG}.symbols\
178             ${FULLPROG} ${.TARGET}
179 ${PROG}.symbols: ${FULLPROG}
180         ${OBJCOPY} --only-keep-debug ${FULLPROG} ${.TARGET}
181 .endif
182
183 .if ${__KLD_SHARED} == yes
184 ${FULLPROG}: ${KMOD}.kld
185         ${LD} -Bshareable ${_LDFLAGS} -o ${.TARGET} ${KMOD}.kld
186 .if !defined(DEBUG_FLAGS)
187         ${OBJCOPY} --strip-debug ${.TARGET}
188 .endif
189 .endif
190
191 EXPORT_SYMS?=   NO
192 .if ${EXPORT_SYMS} != YES
193 CLEANFILES+=    export_syms
194 .endif
195
196 .if ${__KLD_SHARED} == yes
197 ${KMOD}.kld: ${OBJS}
198 .else
199 ${FULLPROG}: ${OBJS}
200 .endif
201         ${LD} ${_LDFLAGS} -r -d -o ${.TARGET} ${OBJS}
202 .if ${MK_CTF} != "no"
203         ${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ${OBJS}
204 .endif
205 .if defined(EXPORT_SYMS)
206 .if ${EXPORT_SYMS} != YES
207 .if ${EXPORT_SYMS} == NO
208         :> export_syms
209 .elif !exists(${.CURDIR}/${EXPORT_SYMS})
210         echo ${EXPORT_SYMS} > export_syms
211 .else
212         grep -v '^#' < ${EXPORT_SYMS} > export_syms
213 .endif
214         awk -f ${SYSDIR}/conf/kmod_syms.awk ${.TARGET} \
215             export_syms | xargs -J% ${OBJCOPY} % ${.TARGET}
216 .endif
217 .endif
218 .if !defined(DEBUG_FLAGS) && ${__KLD_SHARED} == no
219         ${OBJCOPY} --strip-debug ${.TARGET}
220 .endif
221
222 _ILINKS=machine
223 .if ${MACHINE} != ${MACHINE_CPUARCH}
224 _ILINKS+=${MACHINE_CPUARCH}
225 .endif
226 .if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
227 _ILINKS+=x86
228 .endif
229 CLEANFILES+=${_ILINKS}
230
231 all: objwarn ${PROG}
232
233 beforedepend: ${_ILINKS}
234
235 # Ensure that the links exist without depending on it when it exists which
236 # causes all the modules to be rebuilt when the directory pointed to changes.
237 .for _link in ${_ILINKS}
238 .if !exists(${.OBJDIR}/${_link})
239 ${OBJS}: ${.OBJDIR}/${_link}
240 .endif
241 .endfor
242
243 # Search for kernel source tree in standard places.
244 .for _dir in ${.CURDIR}/../.. ${.CURDIR}/../../.. /sys /usr/src/sys
245 .if !defined(SYSDIR) && exists(${_dir}/kern/)
246 SYSDIR= ${_dir}
247 .endif
248 .endfor
249 .if !defined(SYSDIR) || !exists(${SYSDIR}/kern/)
250 .error "can't find kernel source tree"
251 .endif
252
253 .for _link in ${_ILINKS}
254 .PHONY: ${_link}
255 ${_link}: ${.OBJDIR}/${_link}
256
257 ${.OBJDIR}/${_link}:
258         @case ${.TARGET:T} in \
259         machine) \
260                 path=${SYSDIR}/${MACHINE}/include ;; \
261         *) \
262                 path=${SYSDIR}/${.TARGET:T}/include ;; \
263         esac ; \
264         path=`(cd $$path && /bin/pwd)` ; \
265         ${ECHO} ${.TARGET:T} "->" $$path ; \
266         ln -sf $$path ${.TARGET:T}
267 .endfor
268
269 CLEANFILES+= ${PROG} ${KMOD}.kld ${OBJS}
270
271 .if defined(DEBUG_FLAGS)
272 CLEANFILES+= ${FULLPROG} ${PROG}.symbols
273 .endif
274
275 .if !target(install)
276
277 _INSTALLFLAGS:= ${INSTALLFLAGS}
278 .for ie in ${INSTALLFLAGS_EDIT}
279 _INSTALLFLAGS:= ${_INSTALLFLAGS${ie}}
280 .endfor
281
282 .if !target(realinstall)
283 realinstall: _kmodinstall
284 .ORDER: beforeinstall _kmodinstall
285 _kmodinstall:
286         ${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
287             ${_INSTALLFLAGS} ${PROG} ${DESTDIR}${KMODDIR}
288 .if defined(DEBUG_FLAGS) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no"
289         ${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
290             ${_INSTALLFLAGS} ${PROG}.symbols ${DESTDIR}${KMODDIR}
291 .endif
292
293 .include <bsd.links.mk>
294
295 .if !defined(NO_XREF)
296 afterinstall: _kldxref
297 .ORDER: realinstall _kldxref
298 .ORDER: _installlinks _kldxref
299 _kldxref:
300         @if type kldxref >/dev/null 2>&1; then \
301                 ${ECHO} kldxref ${DESTDIR}${KMODDIR}; \
302                 kldxref ${DESTDIR}${KMODDIR}; \
303         fi
304 .endif
305 .endif # !target(realinstall)
306
307 .endif # !target(install)
308
309 .if !target(load)
310 load: ${PROG}
311         ${KMODLOAD} -v ${.OBJDIR}/${PROG}
312 .endif
313
314 .if !target(unload)
315 unload:
316         ${KMODUNLOAD} -v ${PROG}
317 .endif
318
319 # Generate options files that otherwise would be built
320 # in substantially similar ways through the tree. Move
321 # the code here when they all produce identical results
322 # (or should)
323 .if !defined(KERNBUILDDIR)
324 opt_bpf.h:
325         echo "#define DEV_BPF 1" > ${.TARGET}
326 .if ${MK_INET_SUPPORT} != "no"
327 opt_inet.h:
328         @echo "#define INET 1" > ${.TARGET}
329         @echo "#define TCP_OFFLOAD 1" >> ${.TARGET}
330 .endif
331 .if ${MK_INET6_SUPPORT} != "no"
332 opt_inet6.h:
333         @echo "#define INET6 1" > ${.TARGET}
334 .endif
335 opt_mrouting.h:
336         echo "#define MROUTING 1" > ${.TARGET}
337 opt_natm.h:
338         echo "#define NATM 1" > ${.TARGET}
339 opt_scsi.h:
340         echo "#define SCSI_DELAY 15000" > ${.TARGET}
341 opt_wlan.h:
342         echo "#define IEEE80211_DEBUG 1" > ${.TARGET}
343         echo "#define IEEE80211_AMPDU_AGE 1" >> ${.TARGET}
344         echo "#define IEEE80211_SUPPORT_MESH 1" >> ${.TARGET}
345 .endif
346
347 .if defined(KERNBUILDDIR)
348 .PATH: ${KERNBUILDDIR}
349 CFLAGS+=        -I${KERNBUILDDIR}
350 .for _src in ${SRCS:Mopt_*.h}
351 CLEANFILES+=    ${_src}
352 .if !target(${_src})
353 ${_src}:
354         ln -sf ${KERNBUILDDIR}/${_src} ${.TARGET}
355 .endif
356 .endfor
357 .else
358 .for _src in ${SRCS:Mopt_*.h}
359 CLEANFILES+=    ${_src}
360 .if !target(${_src})
361 ${_src}:
362         :> ${.TARGET}
363 .endif
364 .endfor
365 .endif
366
367 # Respect configuration-specific C flags.
368 CFLAGS+=        ${CONF_CFLAGS}
369
370 MFILES?= dev/acpica/acpi_if.m dev/acpi_support/acpi_wmi_if.m \
371         dev/agp/agp_if.m dev/ata/ata_if.m dev/eisa/eisa_if.m \
372         dev/fb/fb_if.m dev/gpio/gpio_if.m dev/gpio/gpiobus_if.m \
373         dev/iicbus/iicbb_if.m dev/iicbus/iicbus_if.m \
374         dev/mbox/mbox_if.m dev/mmc/mmcbr_if.m dev/mmc/mmcbus_if.m \
375         dev/mii/miibus_if.m dev/mvs/mvs_if.m dev/ofw/ofw_bus_if.m \
376         dev/pccard/card_if.m dev/pccard/power_if.m dev/pci/pci_if.m \
377         dev/pci/pcib_if.m dev/ppbus/ppbus_if.m \
378         dev/sdhci/sdhci_if.m dev/smbus/smbus_if.m dev/spibus/spibus_if.m \
379         dev/sound/pci/hda/hdac_if.m \
380         dev/sound/pcm/ac97_if.m dev/sound/pcm/channel_if.m \
381         dev/sound/pcm/feeder_if.m dev/sound/pcm/mixer_if.m \
382         dev/sound/midi/mpu_if.m dev/sound/midi/mpufoi_if.m \
383         dev/sound/midi/synth_if.m dev/usb/usb_if.m isa/isa_if.m \
384         kern/bus_if.m kern/clock_if.m \
385         kern/cpufreq_if.m kern/device_if.m kern/serdev_if.m \
386         libkern/iconv_converter_if.m opencrypto/cryptodev_if.m \
387         pc98/pc98/canbus_if.m dev/etherswitch/mdio_if.m
388
389 .for _srcsrc in ${MFILES}
390 .for _ext in c h
391 .for _src in ${SRCS:M${_srcsrc:T:R}.${_ext}}
392 CLEANFILES+=    ${_src}
393 .if !target(${_src})
394 ${_src}: ${SYSDIR}/tools/makeobjops.awk ${SYSDIR}/${_srcsrc}
395         ${AWK} -f ${SYSDIR}/tools/makeobjops.awk ${SYSDIR}/${_srcsrc} -${_ext}
396 .endif
397 .endfor # _src
398 .endfor # _ext
399 .endfor # _srcsrc
400
401 .if !empty(SRCS:Mvnode_if.c)
402 CLEANFILES+=    vnode_if.c
403 vnode_if.c: ${SYSDIR}/tools/vnode_if.awk ${SYSDIR}/kern/vnode_if.src
404         ${AWK} -f ${SYSDIR}/tools/vnode_if.awk ${SYSDIR}/kern/vnode_if.src -c
405 .endif
406
407 .if !empty(SRCS:Mvnode_if.h)
408 CLEANFILES+=    vnode_if.h vnode_if_newproto.h vnode_if_typedef.h
409 vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: ${SYSDIR}/tools/vnode_if.awk \
410     ${SYSDIR}/kern/vnode_if.src
411 vnode_if.h: vnode_if_newproto.h vnode_if_typedef.h
412         ${AWK} -f ${SYSDIR}/tools/vnode_if.awk ${SYSDIR}/kern/vnode_if.src -h
413 vnode_if_newproto.h:
414         ${AWK} -f ${SYSDIR}/tools/vnode_if.awk ${SYSDIR}/kern/vnode_if.src -p
415 vnode_if_typedef.h:
416         ${AWK} -f ${SYSDIR}/tools/vnode_if.awk ${SYSDIR}/kern/vnode_if.src -q
417 .endif
418
419 .for _i in mii pccard
420 .if !empty(SRCS:M${_i}devs.h)
421 CLEANFILES+=    ${_i}devs.h
422 ${_i}devs.h: ${SYSDIR}/tools/${_i}devs2h.awk ${SYSDIR}/dev/${_i}/${_i}devs
423         ${AWK} -f ${SYSDIR}/tools/${_i}devs2h.awk ${SYSDIR}/dev/${_i}/${_i}devs
424 .endif
425 .endfor # _i
426
427 .if !empty(SRCS:Musbdevs.h)
428 CLEANFILES+=    usbdevs.h
429 usbdevs.h: ${SYSDIR}/tools/usbdevs2h.awk ${SYSDIR}/dev/usb/usbdevs
430         ${AWK} -f ${SYSDIR}/tools/usbdevs2h.awk ${SYSDIR}/dev/usb/usbdevs -h
431 .endif
432
433 .if !empty(SRCS:Musbdevs_data.h)
434 CLEANFILES+=    usbdevs_data.h
435 usbdevs_data.h: ${SYSDIR}/tools/usbdevs2h.awk ${SYSDIR}/dev/usb/usbdevs
436         ${AWK} -f ${SYSDIR}/tools/usbdevs2h.awk ${SYSDIR}/dev/usb/usbdevs -d
437 .endif
438
439 .if !empty(SRCS:Macpi_quirks.h)
440 CLEANFILES+=    acpi_quirks.h
441 acpi_quirks.h: ${SYSDIR}/tools/acpi_quirks2h.awk ${SYSDIR}/dev/acpica/acpi_quirks
442         ${AWK} -f ${SYSDIR}/tools/acpi_quirks2h.awk ${SYSDIR}/dev/acpica/acpi_quirks
443 .endif
444
445 .if !empty(SRCS:Massym.s)
446 CLEANFILES+=    assym.s genassym.o
447 assym.s: genassym.o
448 .if defined(KERNBUILDDIR)
449 genassym.o: opt_global.h
450 .endif
451 assym.s: ${SYSDIR}/kern/genassym.sh
452         sh ${SYSDIR}/kern/genassym.sh genassym.o > ${.TARGET}
453 genassym.o: ${SYSDIR}/${MACHINE_CPUARCH}/${MACHINE_CPUARCH}/genassym.c
454 genassym.o: ${SRCS:Mopt_*.h}
455         ${CC} -c ${CFLAGS:N-fno-common} \
456             ${SYSDIR}/${MACHINE_CPUARCH}/${MACHINE_CPUARCH}/genassym.c
457 .endif
458
459 lint: ${SRCS}
460         ${LINT} ${LINTKERNFLAGS} ${CFLAGS:M-[DILU]*} ${.ALLSRC:M*.c}
461
462 .if defined(KERNBUILDDIR)
463 ${OBJS}: opt_global.h
464 .endif
465
466 .include <bsd.dep.mk>
467
468 cleandepend: cleanilinks
469 # .depend needs include links so we remove them only together.
470 cleanilinks:
471         rm -f ${_ILINKS}
472
473 .if !exists(${.OBJDIR}/${DEPENDFILE})
474 ${OBJS}: ${SRCS:M*.h}
475 .endif
476
477 .include <bsd.obj.mk>
478 .include "kern.mk"