kmod.mk revision 288176
162587Sitojun# From: @(#)bsd.prog.mk 5.26 (Berkeley) 6/25/91 278064Sume# $FreeBSD: head/sys/conf/kmod.mk 288176 2015-09-24 16:55:22Z emaste $ 362587Sitojun# 455009Sshin# The include file <bsd.kmod.mk> handles building and installing loadable 555009Sshin# kernel modules. 655009Sshin# 755009Sshin# 855009Sshin# +++ variables +++ 955009Sshin# 1055009Sshin# CLEANFILES Additional files to remove for the clean and cleandir targets. 1155009Sshin# 1255009Sshin# EXPORT_SYMS A list of symbols that should be exported from the module, 1355009Sshin# or the name of a file containing a list of symbols, or YES 1455009Sshin# to export all symbols. If not defined, no symbols are 1555009Sshin# exported. 1655009Sshin# 1755009Sshin# KMOD The name of the kernel module to build. 1855009Sshin# 1955009Sshin# KMODDIR Base path for kernel modules (see kld(4)). [/boot/kernel] 2055009Sshin# 2155009Sshin# KMODOWN Module file owner. [${BINOWN}] 2255009Sshin# 2355009Sshin# KMODGRP Module file group. [${BINGRP}] 2455009Sshin# 2555009Sshin# KMODMODE Module file mode. [${BINMODE}] 2655009Sshin# 2755009Sshin# KMODLOAD Command to load a kernel module [/sbin/kldload] 2855009Sshin# 2955009Sshin# KMODUNLOAD Command to unload a kernel module [/sbin/kldunload] 3055009Sshin# 3155009Sshin# PROG The name of the kernel module to build. 3255009Sshin# If not supplied, ${KMOD}.ko is used. 3355009Sshin# 3455009Sshin# SRCS List of source files. 3555009Sshin# 3655009Sshin# FIRMWS List of firmware images in format filename:shortname:version 3755009Sshin# 3855009Sshin# FIRMWARE_LICENSE 3955009Sshin# Set to the name of the license the user has to agree on in 4055009Sshin# order to use this firmware. See /usr/share/doc/legal 4155009Sshin# 4255009Sshin# DESTDIR The tree where the module gets installed. [not set] 4355009Sshin# 4455009Sshin# +++ targets +++ 4555009Sshin# 4655009Sshin# install: 4755009Sshin# install the kernel module; if the Makefile 4855009Sshin# does not itself define the target install, the targets 4955009Sshin# beforeinstall and afterinstall may also be used to cause 5055009Sshin# actions immediately before and after the install target 5155009Sshin# is executed. 5255009Sshin# 5355009Sshin# load: 5455009Sshin# Load a module. 5555009Sshin# 5655009Sshin# unload: 5755009Sshin# Unload a module. 5855009Sshin# 5955009Sshin 6055009SshinAWK?= awk 6155009SshinKMODLOAD?= /sbin/kldload 6255009SshinKMODUNLOAD?= /sbin/kldunload 6355009SshinOBJCOPY?= objcopy 6455009Sshin 6555009Sshin.include <bsd.init.mk> 6655009Sshin# Grab all the options for a kernel build. For backwards compat, we need to 6755009Sshin# do this after bsd.own.mk. 6855009Sshin.include "kern.opts.mk" 6978064Sume.include <bsd.compiler.mk> 7078064Sume.include "config.mk" 7178064Sume 7278064Sume.SUFFIXES: .out .o .c .cc .cxx .C .y .l .s .S .m 7378064Sume 7478064Sume# amd64 and mips use direct linking for kmod, all others use shared binaries 7555009Sshin.if ${MACHINE_CPUARCH} != amd64 && ${MACHINE_CPUARCH} != mips 7678064Sume__KLD_SHARED=yes 7778064Sume.else 7855009Sshin__KLD_SHARED=no 7978064Sume.endif 8078064Sume 8155009Sshin.if !empty(CFLAGS:M-O[23s]) && empty(CFLAGS:M-fno-strict-aliasing) 8278064SumeCFLAGS+= -fno-strict-aliasing 8378064Sume.endif 8455009SshinWERROR?= -Werror 8578064SumeCFLAGS+= ${WERROR} 8655009SshinCFLAGS+= -D_KERNEL 8778064SumeCFLAGS+= -DKLD_MODULE 8878064Sume 8978064Sume# Don't use any standard or source-relative include directories. 9055009SshinNOSTDINC= -nostdinc 9178064SumeCFLAGS:= ${CFLAGS:N-I*} ${NOSTDINC} ${INCLMAGIC} ${CFLAGS:M-I*} 9278064Sume.if defined(KERNBUILDDIR) 9378064SumeCFLAGS+= -DHAVE_KERNEL_OPTION_HEADERS -include ${KERNBUILDDIR}/opt_global.h 9455009Sshin.endif 9578064Sume 9678064Sume# Add -I paths for system headers. Individual module makefiles don't 9778064Sume# need any -I paths for this. Similar defaults for .PATH can't be 9855009Sshin# set because there are no standard paths for non-headers. 9978064SumeCFLAGS+= -I. -I${SYSDIR} 10078064Sume 10178064SumeCFLAGS.gcc+= -finline-limit=${INLINE_LIMIT} 10255009SshinCFLAGS.gcc+= -fms-extensions 10378064SumeCFLAGS.gcc+= --param inline-unit-growth=100 10478064SumeCFLAGS.gcc+= --param large-function-growth=1000 10555009Sshin 10678064Sume# Disallow common variables, and if we end up with commons from 10778064Sume# somewhere unexpected, allocate storage for them in the module itself. 10878064SumeCFLAGS+= -fno-common 10978064SumeLDFLAGS+= -d -warn-common 11078064Sume 11178064SumeCFLAGS+= ${DEBUG_FLAGS} 11278064Sume.if ${MACHINE_CPUARCH} == amd64 11355009SshinCFLAGS+= -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer 11478064Sume.endif 11578064Sume 11678064Sume# Temporary workaround for PR 196407, which contains the fascinating details. 11778064Sume# Don't allow clang to use fpu instructions or registers in kernel modules. 11878064Sume.if ${MACHINE_CPUARCH} == arm 11955009SshinCFLAGS.clang+= -mllvm -arm-use-movt=0 12078064SumeCFLAGS.clang+= -mfpu=none 121CFLAGS+= -funwind-tables 122.endif 123 124.if ${MACHINE_CPUARCH} == powerpc 125CFLAGS+= -mlongcall -fno-omit-frame-pointer 126.endif 127 128.if ${MACHINE_CPUARCH} == mips 129CFLAGS+= -G0 -fno-pic -mno-abicalls -mlong-calls 130.endif 131 132.if defined(DEBUG) || defined(DEBUG_FLAGS) 133CTFFLAGS+= -g 134.endif 135 136.if defined(FIRMWS) 137${KMOD:S/$/.c/}: ${SYSDIR}/tools/fw_stub.awk 138 ${AWK} -f ${SYSDIR}/tools/fw_stub.awk ${FIRMWS} -m${KMOD} -c${KMOD:S/$/.c/g} \ 139 ${FIRMWARE_LICENSE:C/.+/-l/}${FIRMWARE_LICENSE} 140 141SRCS+= ${KMOD:S/$/.c/} 142CLEANFILES+= ${KMOD:S/$/.c/} 143 144.for _firmw in ${FIRMWS} 145${_firmw:C/\:.*$/.fwo/}: ${_firmw:C/\:.*$//} 146 @${ECHO} ${_firmw:C/\:.*$//} ${.ALLSRC:M*${_firmw:C/\:.*$//}} 147 @if [ -e ${_firmw:C/\:.*$//} ]; then \ 148 ${LD} -b binary --no-warn-mismatch ${_LDFLAGS} \ 149 -r -d -o ${.TARGET} ${_firmw:C/\:.*$//}; \ 150 else \ 151 ln -s ${.ALLSRC:M*${_firmw:C/\:.*$//}} ${_firmw:C/\:.*$//}; \ 152 ${LD} -b binary --no-warn-mismatch ${_LDFLAGS} \ 153 -r -d -o ${.TARGET} ${_firmw:C/\:.*$//}; \ 154 rm ${_firmw:C/\:.*$//}; \ 155 fi 156 157OBJS+= ${_firmw:C/\:.*$/.fwo/} 158.endfor 159.endif 160 161# Conditionally include SRCS based on kernel config options. 162.for _o in ${KERN_OPTS} 163SRCS+=${SRCS.${_o}} 164.endfor 165 166OBJS+= ${SRCS:N*.h:R:S/$/.o/g} 167 168.if !defined(PROG) 169PROG= ${KMOD}.ko 170.endif 171 172.if !defined(DEBUG_FLAGS) 173FULLPROG= ${PROG} 174.else 175FULLPROG= ${PROG}.full 176${PROG}: ${FULLPROG} ${PROG}.debug 177 ${OBJCOPY} --strip-debug --add-gnu-debuglink=${PROG}.debug \ 178 ${FULLPROG} ${.TARGET} 179${PROG}.debug: ${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 191EXPORT_SYMS?= NO 192.if ${EXPORT_SYMS} != YES 193CLEANFILES+= 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" || ${MACHINE_CPUARCH} == "amd64" 227_ILINKS+=x86 228.endif 229CLEANFILES+=${_ILINKS} 230 231all: objwarn ${PROG} 232 233beforedepend: ${_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}: ${_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/) 246SYSDIR= ${_dir} 247.endif 248.endfor 249.if !defined(SYSDIR) || !exists(${SYSDIR}/kern/) 250.error "can't find kernel source tree" 251.endif 252 253.NOPATH: ${_ILINKS} 254 255${_ILINKS}: 256 @case ${.TARGET} in \ 257 machine) \ 258 path=${SYSDIR}/${MACHINE}/include ;; \ 259 *) \ 260 path=${SYSDIR}/${.TARGET:T}/include ;; \ 261 esac ; \ 262 path=`(cd $$path && /bin/pwd)` ; \ 263 ${ECHO} ${.TARGET:T} "->" $$path ; \ 264 ln -sf $$path ${.TARGET:T} 265 266CLEANFILES+= ${PROG} ${KMOD}.kld ${OBJS} 267 268.if defined(DEBUG_FLAGS) 269CLEANFILES+= ${FULLPROG} ${PROG}.debug 270.endif 271 272.if !target(install) 273 274_INSTALLFLAGS:= ${INSTALLFLAGS} 275.for ie in ${INSTALLFLAGS_EDIT} 276_INSTALLFLAGS:= ${_INSTALLFLAGS${ie}} 277.endfor 278 279.if !target(realinstall) 280KERN_DEBUGDIR?= ${DEBUGDIR} 281realinstall: _kmodinstall 282.ORDER: beforeinstall _kmodinstall 283_kmodinstall: 284 ${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \ 285 ${_INSTALLFLAGS} ${PROG} ${DESTDIR}${KMODDIR} 286.if defined(DEBUG_FLAGS) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no" 287 ${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \ 288 ${_INSTALLFLAGS} ${PROG}.debug ${DESTDIR}${KERN_DEBUGDIR}${KMODDIR} 289.endif 290 291.include <bsd.links.mk> 292 293.if !defined(NO_XREF) 294afterinstall: _kldxref 295.ORDER: realinstall _kldxref 296.ORDER: _installlinks _kldxref 297_kldxref: 298 @if type kldxref >/dev/null 2>&1; then \ 299 ${ECHO} kldxref ${DESTDIR}${KMODDIR}; \ 300 kldxref ${DESTDIR}${KMODDIR}; \ 301 fi 302.endif 303.endif # !target(realinstall) 304 305.endif # !target(install) 306 307.if !target(load) 308load: ${PROG} 309 ${KMODLOAD} -v ${.OBJDIR}/${PROG} 310.endif 311 312.if !target(unload) 313unload: 314 ${KMODUNLOAD} -v ${PROG} 315.endif 316 317.if defined(KERNBUILDDIR) 318.PATH: ${KERNBUILDDIR} 319CFLAGS+= -I${KERNBUILDDIR} 320.for _src in ${SRCS:Mopt_*.h} 321CLEANFILES+= ${_src} 322.if !target(${_src}) 323${_src}: 324 ln -sf ${KERNBUILDDIR}/${_src} ${.TARGET} 325.endif 326.endfor 327.else 328.for _src in ${SRCS:Mopt_*.h} 329CLEANFILES+= ${_src} 330.if !target(${_src}) 331${_src}: 332 :> ${.TARGET} 333.endif 334.endfor 335.endif 336 337# Respect configuration-specific C flags. 338CFLAGS+= ${CONF_CFLAGS} 339 340.if !empty(SRCS:Mvnode_if.c) 341CLEANFILES+= vnode_if.c 342vnode_if.c: ${SYSDIR}/tools/vnode_if.awk ${SYSDIR}/kern/vnode_if.src 343 ${AWK} -f ${SYSDIR}/tools/vnode_if.awk ${SYSDIR}/kern/vnode_if.src -c 344.endif 345 346.if !empty(SRCS:Mvnode_if.h) 347CLEANFILES+= vnode_if.h vnode_if_newproto.h vnode_if_typedef.h 348vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: ${SYSDIR}/tools/vnode_if.awk \ 349 ${SYSDIR}/kern/vnode_if.src 350vnode_if.h: vnode_if_newproto.h vnode_if_typedef.h 351 ${AWK} -f ${SYSDIR}/tools/vnode_if.awk ${SYSDIR}/kern/vnode_if.src -h 352vnode_if_newproto.h: 353 ${AWK} -f ${SYSDIR}/tools/vnode_if.awk ${SYSDIR}/kern/vnode_if.src -p 354vnode_if_typedef.h: 355 ${AWK} -f ${SYSDIR}/tools/vnode_if.awk ${SYSDIR}/kern/vnode_if.src -q 356.endif 357 358# Build _if.[ch] from _if.m, and clean them when we're done. 359.if !defined(_MPATH) 360__MPATH!=find ${SYSDIR:tA}/ -name \*_if.m 361_MPATH=${__MPATH:H:O:u} 362.endif 363.PATH.m: ${_MPATH} 364.for _i in ${SRCS:M*_if.[ch]} 365#removes too much, comment out until it's more constrained. 366#CLEANFILES+= ${_i} 367.endfor # _i 368.m.c: ${SYSDIR}/tools/makeobjops.awk 369 ${AWK} -f ${SYSDIR}/tools/makeobjops.awk ${.IMPSRC} -c 370 371.m.h: ${SYSDIR}/tools/makeobjops.awk 372 ${AWK} -f ${SYSDIR}/tools/makeobjops.awk ${.IMPSRC} -h 373 374.for _i in mii pccard 375.if !empty(SRCS:M${_i}devs.h) 376CLEANFILES+= ${_i}devs.h 377${_i}devs.h: ${SYSDIR}/tools/${_i}devs2h.awk ${SYSDIR}/dev/${_i}/${_i}devs 378 ${AWK} -f ${SYSDIR}/tools/${_i}devs2h.awk ${SYSDIR}/dev/${_i}/${_i}devs 379.endif 380.endfor # _i 381 382.if !empty(SRCS:Musbdevs.h) 383CLEANFILES+= usbdevs.h 384usbdevs.h: ${SYSDIR}/tools/usbdevs2h.awk ${SYSDIR}/dev/usb/usbdevs 385 ${AWK} -f ${SYSDIR}/tools/usbdevs2h.awk ${SYSDIR}/dev/usb/usbdevs -h 386.endif 387 388.if !empty(SRCS:Musbdevs_data.h) 389CLEANFILES+= usbdevs_data.h 390usbdevs_data.h: ${SYSDIR}/tools/usbdevs2h.awk ${SYSDIR}/dev/usb/usbdevs 391 ${AWK} -f ${SYSDIR}/tools/usbdevs2h.awk ${SYSDIR}/dev/usb/usbdevs -d 392.endif 393 394.if !empty(SRCS:Macpi_quirks.h) 395CLEANFILES+= acpi_quirks.h 396acpi_quirks.h: ${SYSDIR}/tools/acpi_quirks2h.awk ${SYSDIR}/dev/acpica/acpi_quirks 397 ${AWK} -f ${SYSDIR}/tools/acpi_quirks2h.awk ${SYSDIR}/dev/acpica/acpi_quirks 398.endif 399 400.if !empty(SRCS:Massym.s) 401CLEANFILES+= assym.s genassym.o 402assym.s: genassym.o 403.if defined(KERNBUILDDIR) 404genassym.o: opt_global.h 405.endif 406assym.s: ${SYSDIR}/kern/genassym.sh 407 sh ${SYSDIR}/kern/genassym.sh genassym.o > ${.TARGET} 408genassym.o: ${SYSDIR}/${MACHINE}/${MACHINE}/genassym.c 409genassym.o: ${SRCS:Mopt_*.h} 410 ${CC} -c ${CFLAGS:N-fno-common} \ 411 ${SYSDIR}/${MACHINE}/${MACHINE}/genassym.c 412.endif 413 414lint: ${SRCS} 415 ${LINT} ${LINTKERNFLAGS} ${CFLAGS:M-[DILU]*} ${.ALLSRC:M*.c} 416 417.if defined(KERNBUILDDIR) 418${OBJS}: opt_global.h 419.endif 420 421.include <bsd.dep.mk> 422 423cleandepend: cleanilinks 424# .depend needs include links so we remove them only together. 425cleanilinks: 426 rm -f ${_ILINKS} 427 428.if !exists(${.OBJDIR}/${DEPENDFILE}) 429${OBJS}: ${SRCS:M*.h} 430.endif 431 432.include <bsd.obj.mk> 433.include "kern.mk" 434