1 # From: @(#)bsd.prog.mk 5.26 (Berkeley) 6/25/91
4 # The include file <bsd.kmod.mk> handles building and installing loadable
10 # CLEANFILES Additional files to remove for the clean and cleandir targets.
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
17 # KMOD The name of the kernel module to build.
19 # KMODDIR Base path for kernel modules (see kld(4)). [/boot/kernel]
21 # KMODOWN Module file owner. [${BINOWN}]
23 # KMODGRP Module file group. [${BINGRP}]
25 # KMODMODE Module file mode. [${BINMODE}]
27 # KMODLOAD Command to load a kernel module [/sbin/kldload]
29 # KMODUNLOAD Command to unload a kernel module [/sbin/kldunload]
31 # PROG The name of the kernel module to build.
32 # If not supplied, ${KMOD}.ko is used.
34 # SRCS List of source files.
36 # FIRMWS List of firmware images in format filename:shortname:version
39 # Set to the name of the license the user has to agree on in
40 # order to use this firmware. See /usr/share/doc/legal
42 # DESTDIR The tree where the module gets installed. [not set]
47 # install the kernel module; if the Makefile
48 # does not itself define the target install, the targets
49 # beforeinstall and afterinstall may also be used to cause
50 # actions immediately before and after the install target
61 KMODLOAD?= /sbin/kldload
62 KMODUNLOAD?= /sbin/kldunload
65 .include <bsd.init.mk>
66 # Grab all the options for a kernel build. For backwards compat, we need to
67 # do this after bsd.own.mk.
68 .include "kern.opts.mk"
69 .include <bsd.compiler.mk>
72 .SUFFIXES: .out .o .c .cc .cxx .C .y .l .s .S .m
74 # amd64 and mips use direct linking for kmod, all others use shared binaries
75 .if ${MACHINE_CPUARCH} != amd64 && ${MACHINE_CPUARCH} != mips
81 .if !empty(CFLAGS:M-O[23s]) && empty(CFLAGS:M-fno-strict-aliasing)
82 CFLAGS+= -fno-strict-aliasing
89 # Don't use any standard or source-relative include directories.
91 CFLAGS:= ${CFLAGS:N-I*} ${NOSTDINC} ${INCLMAGIC} ${CFLAGS:M-I*}
92 .if defined(KERNBUILDDIR)
93 CFLAGS+= -DHAVE_KERNEL_OPTION_HEADERS -include ${KERNBUILDDIR}/opt_global.h
96 # Add -I paths for system headers. Individual module makefiles don't
97 # need any -I paths for this. Similar defaults for .PATH can't be
98 # set because there are no standard paths for non-headers.
99 CFLAGS+= -I. -I${SYSDIR}
101 CFLAGS.gcc+= -finline-limit=${INLINE_LIMIT}
102 CFLAGS.gcc+= -fms-extensions
103 CFLAGS.gcc+= --param inline-unit-growth=100
104 CFLAGS.gcc+= --param large-function-growth=1000
106 # Disallow common variables, and if we end up with commons from
107 # somewhere unexpected, allocate storage for them in the module itself.
109 LDFLAGS+= -d -warn-common
111 CFLAGS+= ${DEBUG_FLAGS}
112 .if ${MACHINE_CPUARCH} == amd64
113 CFLAGS+= -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer
116 .if ${MACHINE_CPUARCH} == "aarch64"
120 # Temporary workaround for PR 196407, which contains the fascinating details.
121 # Don't allow clang to use fpu instructions or registers in kernel modules.
122 .if ${MACHINE_CPUARCH} == arm
123 CFLAGS.clang+= -mllvm -arm-use-movt=0
124 CFLAGS.clang+= -mfpu=none
125 CFLAGS+= -funwind-tables
128 .if ${MACHINE_CPUARCH} == powerpc
129 CFLAGS+= -mlongcall -fno-omit-frame-pointer
132 .if ${MACHINE_CPUARCH} == mips
133 CFLAGS+= -G0 -fno-pic -mno-abicalls -mlong-calls
136 .if defined(DEBUG) || defined(DEBUG_FLAGS)
141 ${KMOD:S/$/.c/}: ${SYSDIR}/tools/fw_stub.awk
142 ${AWK} -f ${SYSDIR}/tools/fw_stub.awk ${FIRMWS} -m${KMOD} -c${KMOD:S/$/.c/g} \
143 ${FIRMWARE_LICENSE:C/.+/-l/}${FIRMWARE_LICENSE}
145 SRCS+= ${KMOD:S/$/.c/}
146 CLEANFILES+= ${KMOD:S/$/.c/}
148 .for _firmw in ${FIRMWS}
149 ${_firmw:C/\:.*$/.fwo/}: ${_firmw:C/\:.*$//}
150 @${ECHO} ${_firmw:C/\:.*$//} ${.ALLSRC:M*${_firmw:C/\:.*$//}}
151 @if [ -e ${_firmw:C/\:.*$//} ]; then \
152 ${LD} -b binary --no-warn-mismatch ${_LDFLAGS} \
153 -r -d -o ${.TARGET} ${_firmw:C/\:.*$//}; \
155 ln -s ${.ALLSRC:M*${_firmw:C/\:.*$//}} ${_firmw:C/\:.*$//}; \
156 ${LD} -b binary --no-warn-mismatch ${_LDFLAGS} \
157 -r -d -o ${.TARGET} ${_firmw:C/\:.*$//}; \
158 rm ${_firmw:C/\:.*$//}; \
161 OBJS+= ${_firmw:C/\:.*$/.fwo/}
165 # Conditionally include SRCS based on kernel config options.
166 .for _o in ${KERN_OPTS}
170 OBJS+= ${SRCS:N*.h:R:S/$/.o/g}
176 .if !defined(DEBUG_FLAGS)
179 FULLPROG= ${PROG}.full
180 ${PROG}: ${FULLPROG} ${PROG}.debug
181 ${OBJCOPY} --strip-debug --add-gnu-debuglink=${PROG}.debug \
182 ${FULLPROG} ${.TARGET}
183 ${PROG}.debug: ${FULLPROG}
184 ${OBJCOPY} --only-keep-debug ${FULLPROG} ${.TARGET}
187 .if ${__KLD_SHARED} == yes
188 ${FULLPROG}: ${KMOD}.kld
189 .if ${MACHINE_CPUARCH} != "aarch64"
190 ${LD} -Bshareable ${_LDFLAGS} -o ${.TARGET} ${KMOD}.kld
192 #XXXKIB Relocatable linking in aarch64 ld from binutils 2.25.1 does
193 # not work. The linker corrupts the references to the external
194 # symbols which are defined by other object in the linking set
195 # and should therefore loose the GOT entry. The problem seems
196 # to be fixed in the binutils-gdb git HEAD as of 2015-10-04. Hack
197 # below allows to get partially functioning modules for now.
198 ${LD} -Bshareable ${_LDFLAGS} -o ${.TARGET} ${OBJS}
200 .if !defined(DEBUG_FLAGS)
201 ${OBJCOPY} --strip-debug ${.TARGET}
206 .if ${EXPORT_SYMS} != YES
207 CLEANFILES+= export_syms
210 .if ${__KLD_SHARED} == yes
215 ${LD} ${_LDFLAGS} -r -d -o ${.TARGET} ${OBJS}
216 .if ${MK_CTF} != "no"
217 ${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ${OBJS}
219 .if defined(EXPORT_SYMS)
220 .if ${EXPORT_SYMS} != YES
221 .if ${EXPORT_SYMS} == NO
223 .elif !exists(${.CURDIR}/${EXPORT_SYMS})
224 echo ${EXPORT_SYMS} > export_syms
226 grep -v '^#' < ${EXPORT_SYMS} > export_syms
228 awk -f ${SYSDIR}/conf/kmod_syms.awk ${.TARGET} \
229 export_syms | xargs -J% ${OBJCOPY} % ${.TARGET}
232 .if !defined(DEBUG_FLAGS) && ${__KLD_SHARED} == no
233 ${OBJCOPY} --strip-debug ${.TARGET}
237 .if ${MACHINE} != ${MACHINE_CPUARCH} && ${MACHINE} != "arm64"
238 _ILINKS+=${MACHINE_CPUARCH}
240 .if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
243 CLEANFILES+=${_ILINKS}
247 beforedepend: ${_ILINKS}
249 # Ensure that the links exist without depending on it when it exists which
250 # causes all the modules to be rebuilt when the directory pointed to changes.
251 .for _link in ${_ILINKS}
252 .if !exists(${.OBJDIR}/${_link})
257 # Search for kernel source tree in standard places.
258 .for _dir in ${.CURDIR}/../.. ${.CURDIR}/../../.. /sys /usr/src/sys
259 .if !defined(SYSDIR) && exists(${_dir}/kern/)
263 .if !defined(SYSDIR) || !exists(${SYSDIR}/kern/)
264 .error "can't find kernel source tree"
270 @case ${.TARGET} in \
272 path=${SYSDIR}/${MACHINE}/include ;; \
274 path=${SYSDIR}/${.TARGET:T}/include ;; \
276 path=`(cd $$path && /bin/pwd)` ; \
277 ${ECHO} ${.TARGET:T} "->" $$path ; \
278 ln -sf $$path ${.TARGET:T}
280 CLEANFILES+= ${PROG} ${KMOD}.kld ${OBJS}
282 .if defined(DEBUG_FLAGS)
283 CLEANFILES+= ${FULLPROG} ${PROG}.debug
288 _INSTALLFLAGS:= ${INSTALLFLAGS}
289 .for ie in ${INSTALLFLAGS_EDIT}
290 _INSTALLFLAGS:= ${_INSTALLFLAGS${ie}}
293 .if !target(realinstall)
294 KERN_DEBUGDIR?= ${DEBUGDIR}
295 realinstall: _kmodinstall
296 .ORDER: beforeinstall _kmodinstall
298 ${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
299 ${_INSTALLFLAGS} ${PROG} ${DESTDIR}${KMODDIR}/
300 .if defined(DEBUG_FLAGS) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no"
301 ${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
302 ${_INSTALLFLAGS} ${PROG}.debug ${DESTDIR}${KERN_DEBUGDIR}${KMODDIR}/
305 .include <bsd.links.mk>
307 .if !defined(NO_XREF)
308 afterinstall: _kldxref
309 .ORDER: realinstall _kldxref
310 .ORDER: _installlinks _kldxref
312 @if type kldxref >/dev/null 2>&1; then \
313 ${ECHO} kldxref ${DESTDIR}${KMODDIR}; \
314 kldxref ${DESTDIR}${KMODDIR}; \
317 .endif # !target(realinstall)
319 .endif # !target(install)
323 ${KMODLOAD} -v ${.OBJDIR}/${PROG}
328 ${KMODUNLOAD} -v ${PROG}
331 .if defined(KERNBUILDDIR)
332 .PATH: ${KERNBUILDDIR}
333 CFLAGS+= -I${KERNBUILDDIR}
334 .for _src in ${SRCS:Mopt_*.h}
338 ln -sf ${KERNBUILDDIR}/${_src} ${.TARGET}
342 .for _src in ${SRCS:Mopt_*.h}
351 # Respect configuration-specific C flags.
352 CFLAGS+= ${CONF_CFLAGS}
354 .if !empty(SRCS:Mvnode_if.c)
355 CLEANFILES+= vnode_if.c
356 vnode_if.c: ${SYSDIR}/tools/vnode_if.awk ${SYSDIR}/kern/vnode_if.src
357 ${AWK} -f ${SYSDIR}/tools/vnode_if.awk ${SYSDIR}/kern/vnode_if.src -c
360 .if !empty(SRCS:Mvnode_if.h)
361 CLEANFILES+= vnode_if.h vnode_if_newproto.h vnode_if_typedef.h
362 vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: ${SYSDIR}/tools/vnode_if.awk \
363 ${SYSDIR}/kern/vnode_if.src
364 vnode_if.h: vnode_if_newproto.h vnode_if_typedef.h
365 ${AWK} -f ${SYSDIR}/tools/vnode_if.awk ${SYSDIR}/kern/vnode_if.src -h
367 ${AWK} -f ${SYSDIR}/tools/vnode_if.awk ${SYSDIR}/kern/vnode_if.src -p
369 ${AWK} -f ${SYSDIR}/tools/vnode_if.awk ${SYSDIR}/kern/vnode_if.src -q
372 # Build _if.[ch] from _if.m, and clean them when we're done.
374 __MPATH!=find ${SYSDIR:tA}/ -name \*_if.m
375 _MPATH=${__MPATH:H:O:u}
378 .for _i in ${SRCS:M*_if.[ch]}
379 #removes too much, comment out until it's more constrained.
382 .m.c: ${SYSDIR}/tools/makeobjops.awk
383 ${AWK} -f ${SYSDIR}/tools/makeobjops.awk ${.IMPSRC} -c
385 .m.h: ${SYSDIR}/tools/makeobjops.awk
386 ${AWK} -f ${SYSDIR}/tools/makeobjops.awk ${.IMPSRC} -h
388 .for _i in mii pccard
389 .if !empty(SRCS:M${_i}devs.h)
390 CLEANFILES+= ${_i}devs.h
391 ${_i}devs.h: ${SYSDIR}/tools/${_i}devs2h.awk ${SYSDIR}/dev/${_i}/${_i}devs
392 ${AWK} -f ${SYSDIR}/tools/${_i}devs2h.awk ${SYSDIR}/dev/${_i}/${_i}devs
396 .if !empty(SRCS:Musbdevs.h)
397 CLEANFILES+= usbdevs.h
398 usbdevs.h: ${SYSDIR}/tools/usbdevs2h.awk ${SYSDIR}/dev/usb/usbdevs
399 ${AWK} -f ${SYSDIR}/tools/usbdevs2h.awk ${SYSDIR}/dev/usb/usbdevs -h
402 .if !empty(SRCS:Musbdevs_data.h)
403 CLEANFILES+= usbdevs_data.h
404 usbdevs_data.h: ${SYSDIR}/tools/usbdevs2h.awk ${SYSDIR}/dev/usb/usbdevs
405 ${AWK} -f ${SYSDIR}/tools/usbdevs2h.awk ${SYSDIR}/dev/usb/usbdevs -d
408 .if !empty(SRCS:Macpi_quirks.h)
409 CLEANFILES+= acpi_quirks.h
410 acpi_quirks.h: ${SYSDIR}/tools/acpi_quirks2h.awk ${SYSDIR}/dev/acpica/acpi_quirks
411 ${AWK} -f ${SYSDIR}/tools/acpi_quirks2h.awk ${SYSDIR}/dev/acpica/acpi_quirks
414 .if !empty(SRCS:Massym.s)
415 CLEANFILES+= assym.s genassym.o
417 .if defined(KERNBUILDDIR)
418 genassym.o: opt_global.h
420 assym.s: ${SYSDIR}/kern/genassym.sh
421 sh ${SYSDIR}/kern/genassym.sh genassym.o > ${.TARGET}
422 genassym.o: ${SYSDIR}/${MACHINE}/${MACHINE}/genassym.c
423 genassym.o: ${SRCS:Mopt_*.h}
424 ${CC} -c ${CFLAGS:N-fno-common} \
425 ${SYSDIR}/${MACHINE}/${MACHINE}/genassym.c
429 ${LINT} ${LINTKERNFLAGS} ${CFLAGS:M-[DILU]*} ${.ALLSRC:M*.c}
431 .if defined(KERNBUILDDIR)
432 ${OBJS}: opt_global.h
435 .include <bsd.dep.mk>
437 cleandepend: cleanilinks
438 # .depend needs include links so we remove them only together.
442 .if !exists(${.OBJDIR}/${DEPENDFILE})
443 ${OBJS}: ${SRCS:M*.h}
446 .include <bsd.obj.mk>