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# PROG The name of the kernel module to build. 32# If not supplied, ${KMOD}.ko is used. 33# 34# SRCS List of source files. 35# 36# FIRMWS List of firmware images in format filename:shortname:version 37# 38# FIRMWARE_LICENSE 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 41# 42# DESTDIR The tree where the module gets installed. [not set] 43# 44# +++ targets +++ 45# 46# install: 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 51# is executed. 52# 53# load: 54# Load a module. 55# 56# unload: 57# Unload a module. 58# 59 60AWK?= awk 61KMODLOAD?= /sbin/kldload 62KMODUNLOAD?= /sbin/kldunload 63OBJCOPY?= objcopy 64 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> 70.include "config.mk" 71 72.SUFFIXES: .out .o .c .cc .cxx .C .y .l .s .S .m 73 74# amd64 and mips use direct linking for kmod, all others use shared binaries 75.if ${MACHINE_CPUARCH} != amd64 && ${MACHINE_CPUARCH} != mips 76__KLD_SHARED=yes 77.else 78__KLD_SHARED=no 79.endif 80 81.if !empty(CFLAGS:M-O[23s]) && empty(CFLAGS:M-fno-strict-aliasing) 82CFLAGS+= -fno-strict-aliasing 83.endif 84WERROR?= -Werror 85CFLAGS+= ${WERROR} 86CFLAGS+= -D_KERNEL 87CFLAGS+= -DKLD_MODULE 88 89# Don't use any standard or source-relative include directories. 90NOSTDINC= -nostdinc 91CFLAGS:= ${CFLAGS:N-I*} ${NOSTDINC} ${INCLMAGIC} ${CFLAGS:M-I*} 92.if defined(KERNBUILDDIR) 93CFLAGS+= -DHAVE_KERNEL_OPTION_HEADERS -include ${KERNBUILDDIR}/opt_global.h 94.endif 95 96# Add -I paths for system headers. Individual module makefiles don't 97# need any -I paths for this. Similar defaults for .PATH can't be 98# set because there are no standard paths for non-headers. 99CFLAGS+= -I. -I${SYSDIR} 100 101CFLAGS.gcc+= -finline-limit=${INLINE_LIMIT} 102CFLAGS.gcc+= -fms-extensions 103CFLAGS.gcc+= --param inline-unit-growth=100 104CFLAGS.gcc+= --param large-function-growth=1000 105 106# Disallow common variables, and if we end up with commons from 107# somewhere unexpected, allocate storage for them in the module itself. 108CFLAGS+= -fno-common 109LDFLAGS+= -d -warn-common 110 111CFLAGS+= ${DEBUG_FLAGS} 112.if ${MACHINE_CPUARCH} == amd64 113CFLAGS+= -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer 114.endif 115 116# Temporary workaround for PR 196407, which contains the fascinating details. 117# Don't allow clang to use fpu instructions or registers in kernel modules. 118.if ${MACHINE_CPUARCH} == arm 119CFLAGS.clang+= -mllvm -arm-use-movt=0 120CFLAGS.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= ${PROG}.debug 176${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 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}.symbols 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) 280realinstall: _kmodinstall 281.ORDER: beforeinstall _kmodinstall 282_kmodinstall: 283 ${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \ 284 ${_INSTALLFLAGS} ${PROG} ${DESTDIR}${KMODDIR} 285.if defined(DEBUG_FLAGS) && !defined(INSTALL_NODEBUG) && ${MK_KERNEL_SYMBOLS} != "no" 286 ${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \ 287 ${_INSTALLFLAGS} ${PROG}.symbols ${DESTDIR}${KMODDIR} 288.endif 289 290.include <bsd.links.mk> 291 292.if !defined(NO_XREF) 293afterinstall: _kldxref 294.ORDER: realinstall _kldxref 295.ORDER: _installlinks _kldxref 296_kldxref: 297 @if type kldxref >/dev/null 2>&1; then \ 298 ${ECHO} kldxref ${DESTDIR}${KMODDIR}; \ 299 kldxref ${DESTDIR}${KMODDIR}; \ 300 fi 301.endif 302.endif # !target(realinstall) 303 304.endif # !target(install) 305 306.if !target(load) 307load: ${PROG} 308 ${KMODLOAD} -v ${.OBJDIR}/${PROG} 309.endif 310 311.if !target(unload) 312unload: 313 ${KMODUNLOAD} -v ${PROG} 314.endif 315 316.if defined(KERNBUILDDIR) 317.PATH: ${KERNBUILDDIR} 318CFLAGS+= -I${KERNBUILDDIR} 319.for _src in ${SRCS:Mopt_*.h} 320CLEANFILES+= ${_src} 321.if !target(${_src}) 322${_src}: 323 ln -sf ${KERNBUILDDIR}/${_src} ${.TARGET} 324.endif 325.endfor 326.else 327.for _src in ${SRCS:Mopt_*.h} 328CLEANFILES+= ${_src} 329.if !target(${_src}) 330${_src}: 331 :> ${.TARGET} 332.endif 333.endfor 334.endif 335 336# Respect configuration-specific C flags. 337CFLAGS+= ${CONF_CFLAGS} 338 339.if !empty(SRCS:Mvnode_if.c) 340CLEANFILES+= vnode_if.c 341vnode_if.c: ${SYSDIR}/tools/vnode_if.awk ${SYSDIR}/kern/vnode_if.src 342 ${AWK} -f ${SYSDIR}/tools/vnode_if.awk ${SYSDIR}/kern/vnode_if.src -c 343.endif 344 345.if !empty(SRCS:Mvnode_if.h) 346CLEANFILES+= vnode_if.h vnode_if_newproto.h vnode_if_typedef.h 347vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: ${SYSDIR}/tools/vnode_if.awk \ 348 ${SYSDIR}/kern/vnode_if.src 349vnode_if.h: vnode_if_newproto.h vnode_if_typedef.h 350 ${AWK} -f ${SYSDIR}/tools/vnode_if.awk ${SYSDIR}/kern/vnode_if.src -h 351vnode_if_newproto.h: 352 ${AWK} -f ${SYSDIR}/tools/vnode_if.awk ${SYSDIR}/kern/vnode_if.src -p 353vnode_if_typedef.h: 354 ${AWK} -f ${SYSDIR}/tools/vnode_if.awk ${SYSDIR}/kern/vnode_if.src -q 355.endif 356 357# Build _if.[ch] from _if.m, and clean them when we're done. 358.if !defined(_MPATH) 359__MPATH!=find ${SYSDIR:tA}/ -name \*_if.m 360_MPATH=${__MPATH:H:O:u} 361.endif 362.PATH.m: ${_MPATH} 363.for _i in ${SRCS:M*_if.[ch]} 364#removes too much, comment out until it's more constrained. 365#CLEANFILES+= ${_i} 366.endfor # _i 367.m.c: ${SYSDIR}/tools/makeobjops.awk 368 ${AWK} -f ${SYSDIR}/tools/makeobjops.awk ${.IMPSRC} -c 369 370.m.h: ${SYSDIR}/tools/makeobjops.awk 371 ${AWK} -f ${SYSDIR}/tools/makeobjops.awk ${.IMPSRC} -h 372 373.for _i in mii pccard 374.if !empty(SRCS:M${_i}devs.h) 375CLEANFILES+= ${_i}devs.h 376${_i}devs.h: ${SYSDIR}/tools/${_i}devs2h.awk ${SYSDIR}/dev/${_i}/${_i}devs 377 ${AWK} -f ${SYSDIR}/tools/${_i}devs2h.awk ${SYSDIR}/dev/${_i}/${_i}devs 378.endif 379.endfor # _i 380 381.if !empty(SRCS:Musbdevs.h) 382CLEANFILES+= usbdevs.h 383usbdevs.h: ${SYSDIR}/tools/usbdevs2h.awk ${SYSDIR}/dev/usb/usbdevs 384 ${AWK} -f ${SYSDIR}/tools/usbdevs2h.awk ${SYSDIR}/dev/usb/usbdevs -h 385.endif 386 387.if !empty(SRCS:Musbdevs_data.h) 388CLEANFILES+= usbdevs_data.h 389usbdevs_data.h: ${SYSDIR}/tools/usbdevs2h.awk ${SYSDIR}/dev/usb/usbdevs 390 ${AWK} -f ${SYSDIR}/tools/usbdevs2h.awk ${SYSDIR}/dev/usb/usbdevs -d 391.endif 392 393.if !empty(SRCS:Macpi_quirks.h) 394CLEANFILES+= acpi_quirks.h 395acpi_quirks.h: ${SYSDIR}/tools/acpi_quirks2h.awk ${SYSDIR}/dev/acpica/acpi_quirks 396 ${AWK} -f ${SYSDIR}/tools/acpi_quirks2h.awk ${SYSDIR}/dev/acpica/acpi_quirks 397.endif 398 399.if !empty(SRCS:Massym.s) 400CLEANFILES+= assym.s genassym.o 401assym.s: genassym.o 402.if defined(KERNBUILDDIR) 403genassym.o: opt_global.h 404.endif 405assym.s: ${SYSDIR}/kern/genassym.sh 406 sh ${SYSDIR}/kern/genassym.sh genassym.o > ${.TARGET} 407genassym.o: ${SYSDIR}/${MACHINE}/${MACHINE}/genassym.c 408genassym.o: ${SRCS:Mopt_*.h} 409 ${CC} -c ${CFLAGS:N-fno-common} \ 410 ${SYSDIR}/${MACHINE}/${MACHINE}/genassym.c 411.endif 412 413lint: ${SRCS} 414 ${LINT} ${LINTKERNFLAGS} ${CFLAGS:M-[DILU]*} ${.ALLSRC:M*.c} 415 416.if defined(KERNBUILDDIR) 417${OBJS}: opt_global.h 418.endif 419 420.include <bsd.dep.mk> 421 422cleandepend: cleanilinks 423# .depend needs include links so we remove them only together. 424cleanilinks: 425 rm -f ${_ILINKS} 426 427.if !exists(${.OBJDIR}/${DEPENDFILE}) 428${OBJS}: ${SRCS:M*.h} 429.endif 430 431.include <bsd.obj.mk> 432.include "kern.mk" 433