FreeBSD/Linux Kernel Cross Reference
sys/conf/kmod.mk

     #       From: @(#)bsd.prog.mk   5.26 (Berkeley) 6/25/91
     # $FreeBSD: releng/8.2/sys/conf/kmod.mk 215938 2010-11-27 12:26:40Z jchandra $
     #
     # The include file <bsd.kmod.mk> handles building and installing loadable
     # kernel modules.
     #
     #
     # +++ variables +++
     #
    # CLEANFILES    Additional files to remove for the clean and cleandir targets.
    #
    # EXPORT_SYMS   A list of symbols that should be exported from the module,
    #               or the name of a file containing a list of symbols, or YES
    #               to export all symbols.  If not defined, no symbols are
    #               exported.
    #
    # KMOD          The name of the kernel module to build.
    #
    # KMODDIR       Base path for kernel modules (see kld(4)). [/boot/kernel]
    #
    # KMODOWN       Module file owner. [${BINOWN}]
    #
    # KMODGRP       Module file group. [${BINGRP}]
    #
    # KMODMODE      Module file mode. [${BINMODE}]
    #
    # KMODLOAD      Command to load a kernel module [/sbin/kldload]
    #
    # KMODUNLOAD    Command to unload a kernel module [/sbin/kldunload]
    #
    # MFILES        Optionally a list of interfaces used by the module.
    #               This file contains a default list of interfaces.
    #
    # PROG          The name of the kernel module to build.
    #               If not supplied, ${KMOD}.ko is used.
    #
    # SRCS          List of source files.
    #
    # FIRMWS        List of firmware images in format filename:shortname:version
    #
    # FIRMWARE_LICENSE
    #               Set to the name of the license the user has to agree on in
    #               order to use this firmware. See /usr/share/doc/legal
    #
    # DESTDIR       The tree where the module gets installed. [not set]
    #
    # +++ targets +++
    #
    #       install:
    #               install the kernel module; if the Makefile
    #               does not itself define the target install, the targets
    #               beforeinstall and afterinstall may also be used to cause
    #               actions immediately before and after the install target
    #               is executed.
    #
    #       load:
    #               Load a module.
    #
    #       unload:
    #               Unload a module.
    #
    
    AWK?=           awk
    KMODLOAD?=      /sbin/kldload
    KMODUNLOAD?=    /sbin/kldunload
    OBJCOPY?=       objcopy
    
    .if defined(KMODDEPS)
    .error "Do not use KMODDEPS on 5.0+; use MODULE_VERSION/MODULE_DEPEND"
    .endif
    
    .include <bsd.init.mk>
    
    .SUFFIXES: .out .o .c .cc .cxx .C .y .l .s .S
    
    .if ${CC} == "icc"
    CFLAGS:=        ${CFLAGS:C/(-x[^M^K^W]+)[MKW]+|-x[MKW]+/\1/}
    .else
    . if !empty(CFLAGS:M-O[23s]) && empty(CFLAGS:M-fno-strict-aliasing)
    CFLAGS+=        -fno-strict-aliasing
    . endif
    WERROR?=        -Werror
    .endif
    CFLAGS+=        ${WERROR}
    CFLAGS+=        -D_KERNEL
    CFLAGS+=        -DKLD_MODULE
    
    # Don't use any standard or source-relative include directories.
    .if ${CC} == "icc"
    NOSTDINC=       -X
    .else
    CSTD=           c99
    NOSTDINC=       -nostdinc
    .endif
    CFLAGS:=        ${CFLAGS:N-I*} ${NOSTDINC} ${INCLMAGIC} ${CFLAGS:M-I*}
    .if defined(KERNBUILDDIR)
    CFLAGS+=        -DHAVE_KERNEL_OPTION_HEADERS -include ${KERNBUILDDIR}/opt_global.h
    .endif
    
   # Add -I paths for system headers.  Individual module makefiles don't
   # need any -I paths for this.  Similar defaults for .PATH can't be
   # set because there are no standard paths for non-headers.
   CFLAGS+=        -I. -I@
   
   # Add -I path for altq headers as they are included via net/if_var.h
   # for example.
   CFLAGS+=        -I@/contrib/altq
   
   .if ${CC} != "icc"
   CFLAGS+=        -finline-limit=${INLINE_LIMIT}
   CFLAGS+= --param inline-unit-growth=100
   CFLAGS+= --param large-function-growth=1000
   .endif
   
   # Disallow common variables, and if we end up with commons from
   # somewhere unexpected, allocate storage for them in the module itself.
   .if ${CC} != "icc"
   CFLAGS+=        -fno-common
   .endif
   LDFLAGS+=       -d -warn-common
   
   CFLAGS+=        ${DEBUG_FLAGS}
   .if ${MACHINE_ARCH} == amd64
   CFLAGS+=        -fno-omit-frame-pointer
   .endif
   
   .if ${MACHINE_ARCH} == "powerpc"
   CFLAGS+=        -mlongcall -fno-omit-frame-pointer
   .endif
   
   .if ${MACHINE_ARCH} == "mips"
   CFLAGS+=        -G0 -fno-pic -mno-abicalls -mlong-calls
   .endif
   
   .if defined(FIRMWS)
   .if !exists(@)
   ${KMOD:S/$/.c/}: @
   .else
   ${KMOD:S/$/.c/}: @/tools/fw_stub.awk
   .endif
           ${AWK} -f @/tools/fw_stub.awk ${FIRMWS} -m${KMOD} -c${KMOD:S/$/.c/g} \
               ${FIRMWARE_LICENSE:C/.+/-l/}${FIRMWARE_LICENSE}
   
   SRCS+=  ${KMOD:S/$/.c/}
   CLEANFILES+=    ${KMOD:S/$/.c/}
   
   .for _firmw in ${FIRMWS}
   ${_firmw:C/\:.*$/.fwo/}:        ${_firmw:C/\:.*$//}
           @${ECHO} ${_firmw:C/\:.*$//} ${.ALLSRC:M*${_firmw:C/\:.*$//}}
           @if [ -e ${_firmw:C/\:.*$//} ]; then                    \
                   ${LD} -b binary --no-warn-mismatch ${LDFLAGS}   \
                       -r -d -o ${.TARGET} ${_firmw:C/\:.*$//};    \
           else                                                    \
                   ln -s ${.ALLSRC:M*${_firmw:C/\:.*$//}} ${_firmw:C/\:.*$//}; \
                   ${LD} -b binary --no-warn-mismatch ${LDFLAGS}   \
                       -r -d -o ${.TARGET} ${_firmw:C/\:.*$//};    \
                   rm ${_firmw:C/\:.*$//};                         \
           fi
   
   OBJS+=  ${_firmw:C/\:.*$/.fwo/}
   .endfor
   .endif
   
   OBJS+=  ${SRCS:N*.h:R:S/$/.o/g}
   
   .if !defined(PROG)
   PROG=   ${KMOD}.ko
   .endif
   
   .if !defined(DEBUG_FLAGS)
   FULLPROG=       ${PROG}
   .else
   FULLPROG=       ${PROG}.debug
   ${PROG}: ${FULLPROG} ${PROG}.symbols
           ${OBJCOPY} --strip-debug --add-gnu-debuglink=${PROG}.symbols\
               ${FULLPROG} ${.TARGET}
   ${PROG}.symbols: ${FULLPROG}
           ${OBJCOPY} --only-keep-debug ${FULLPROG} ${.TARGET}
   .endif
   
   .if ${MACHINE_ARCH} != amd64 && ${MACHINE_ARCH} != mips
   ${FULLPROG}: ${KMOD}.kld
           ${LD} -Bshareable ${LDFLAGS} -o ${.TARGET} ${KMOD}.kld
   .if !defined(DEBUG_FLAGS)
           ${OBJCOPY} --strip-debug ${.TARGET}
   .endif
   .endif
   
   EXPORT_SYMS?=   NO
   .if ${EXPORT_SYMS} != YES
   CLEANFILES+=    export_syms
   .endif
   
   .if ${MACHINE_ARCH} != amd64 && ${MACHINE_ARCH} != mips
   ${KMOD}.kld: ${OBJS}
   .else
   ${FULLPROG}: ${OBJS}
   .endif
           ${LD} ${LDFLAGS} -r -d -o ${.TARGET} ${OBJS}
   .if defined(EXPORT_SYMS)
   .if ${EXPORT_SYMS} != YES
   .if ${EXPORT_SYMS} == NO
           :> export_syms
   .elif !exists(${.CURDIR}/${EXPORT_SYMS})
           echo ${EXPORT_SYMS} > export_syms
   .else
           grep -v '^#' < ${EXPORT_SYMS} > export_syms
   .endif
           awk -f ${SYSDIR}/conf/kmod_syms.awk ${.TARGET} \
               export_syms | xargs -J% ${OBJCOPY} % ${.TARGET}
   .endif
   .endif
   .if !defined(DEBUG_FLAGS) && \
       (${MACHINE_ARCH} == amd64 || ${MACHINE_ARCH} == mips)
           ${OBJCOPY} --strip-debug ${.TARGET}
   .endif
   
   _ILINKS=@ machine
   .if ${MACHINE} != ${MACHINE_ARCH}
   _ILINKS+=${MACHINE_ARCH}
   .endif
   
   all: objwarn ${PROG}
   
   beforedepend: ${_ILINKS}
   
   # Ensure that the links exist without depending on it when it exists which
   # causes all the modules to be rebuilt when the directory pointed to changes.
   .for _link in ${_ILINKS}
   .if !exists(${.OBJDIR}/${_link})
   ${OBJS}: ${_link}
   .endif
   .endfor
   
   # Search for kernel source tree in standard places.
   .for _dir in ${.CURDIR}/../.. ${.CURDIR}/../../.. /sys /usr/src/sys
   .if !defined(SYSDIR) && exists(${_dir}/kern/)
   SYSDIR= ${_dir}
   .endif
   .endfor
   .if !defined(SYSDIR) || !exists(${SYSDIR}/kern/)
   .error "can't find kernel source tree"
   .endif
   
   ${_ILINKS}:
           @case ${.TARGET} in \
           ${MACHINE_ARCH}) \
                   path=${SYSDIR}/${MACHINE_ARCH}/include ;; \
           machine) \
                   path=${SYSDIR}/${MACHINE}/include ;; \
           @) \
                   path=${SYSDIR} ;; \
           esac ; \
           path=`(cd $$path && /bin/pwd)` ; \
           ${ECHO} ${.TARGET} "->" $$path ; \
           ln -sf $$path ${.TARGET}
   
   CLEANFILES+= ${PROG} ${KMOD}.kld ${OBJS}
   
   .if defined(DEBUG_FLAGS)
   CLEANFILES+= ${FULLPROG} ${PROG}.symbols
   .endif
   
   .if !target(install)
   
   _INSTALLFLAGS:= ${INSTALLFLAGS}
   .for ie in ${INSTALLFLAGS_EDIT}
   _INSTALLFLAGS:= ${_INSTALLFLAGS${ie}}
   .endfor
   
   .if !target(realinstall)
   realinstall: _kmodinstall
   .ORDER: beforeinstall _kmodinstall
   _kmodinstall:
           ${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
               ${_INSTALLFLAGS} ${PROG} ${DESTDIR}${KMODDIR}
   .if defined(DEBUG_FLAGS) && !defined(INSTALL_NODEBUG)
           ${INSTALL} -o ${KMODOWN} -g ${KMODGRP} -m ${KMODMODE} \
               ${_INSTALLFLAGS} ${PROG}.symbols ${DESTDIR}${KMODDIR}
   .endif
   
   .include <bsd.links.mk>
   
   .if !defined(NO_XREF)
   afterinstall: _kldxref
   .ORDER: realinstall _kldxref
   .ORDER: _installlinks _kldxref
   _kldxref:
           @if type kldxref >/dev/null 2>&1; then \
                   ${ECHO} kldxref ${DESTDIR}${KMODDIR}; \
                   kldxref ${DESTDIR}${KMODDIR}; \
           fi
   .endif
   .endif # !target(realinstall)
   
   .endif # !target(install)
   
   .if !target(load)
   load: ${PROG}
           ${KMODLOAD} -v ${.OBJDIR}/${PROG}
   .endif
   
   .if !target(unload)
   unload:
           ${KMODUNLOAD} -v ${PROG}
   .endif
   
   .if defined(KERNBUILDDIR)
   .PATH: ${KERNBUILDDIR}
   CFLAGS+=        -I${KERNBUILDDIR}
   .for _src in ${SRCS:Mopt_*.h}
   CLEANFILES+=    ${_src}
   .if !target(${_src})
   ${_src}:
           ln -sf ${KERNBUILDDIR}/${_src} ${.TARGET}
   .endif
   .endfor
   .else
   .for _src in ${SRCS:Mopt_*.h}
   CLEANFILES+=    ${_src}
   .if !target(${_src})
   ${_src}:
           :> ${.TARGET}
   .endif
   .endfor
   .endif
   
   MFILES?= dev/acpica/acpi_if.m dev/acpi_support/acpi_wmi_if.m \
           dev/agp/agp_if.m dev/ata/ata_if.m dev/eisa/eisa_if.m \
           dev/iicbus/iicbb_if.m dev/iicbus/iicbus_if.m \
           dev/mmc/mmcbr_if.m dev/mmc/mmcbus_if.m \
           dev/mii/miibus_if.m dev/mvs/mvs_if.m dev/ofw/ofw_bus_if.m \
           dev/pccard/card_if.m dev/pccard/power_if.m dev/pci/pci_if.m \
           dev/pci/pcib_if.m dev/ppbus/ppbus_if.m dev/smbus/smbus_if.m \
           dev/sound/pcm/ac97_if.m dev/sound/pcm/channel_if.m \
           dev/sound/pcm/feeder_if.m dev/sound/pcm/mixer_if.m \
           dev/sound/midi/mpu_if.m dev/sound/midi/mpufoi_if.m \
           dev/sound/midi/synth_if.m dev/usb/usb_if.m isa/isa_if.m \
           kern/bus_if.m kern/clock_if.m \
           kern/cpufreq_if.m kern/device_if.m kern/serdev_if.m \
           libkern/iconv_converter_if.m opencrypto/cryptodev_if.m \
           pc98/pc98/canbus_if.m
   
   .for _srcsrc in ${MFILES}
   .for _ext in c h
   .for _src in ${SRCS:M${_srcsrc:T:R}.${_ext}}
   CLEANFILES+=    ${_src}
   .if !target(${_src})
   .if !exists(@)
   ${_src}: @
   .else
   ${_src}: @/tools/makeobjops.awk @/${_srcsrc}
   .endif
           ${AWK} -f @/tools/makeobjops.awk @/${_srcsrc} -${_ext}
   .endif
   .endfor # _src
   .endfor # _ext
   .endfor # _srcsrc
   
   .if !empty(SRCS:Mvnode_if.c)
   CLEANFILES+=    vnode_if.c
   .if !exists(@)
   vnode_if.c: @
   .else
   vnode_if.c: @/tools/vnode_if.awk @/kern/vnode_if.src
   .endif
           ${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -c
   .endif
   
   .if !empty(SRCS:Mvnode_if.h)
   CLEANFILES+=    vnode_if.h vnode_if_newproto.h vnode_if_typedef.h
   .if !exists(@)
   vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: @
   .else
   vnode_if.h vnode_if_newproto.h vnode_if_typedef.h: @/tools/vnode_if.awk \
       @/kern/vnode_if.src
   .endif
   vnode_if.h: vnode_if_newproto.h vnode_if_typedef.h
           ${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -h
   vnode_if_newproto.h:
           ${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -p
   vnode_if_typedef.h:
           ${AWK} -f @/tools/vnode_if.awk @/kern/vnode_if.src -q
   .endif
   
   .for _i in mii pccard
   .if !empty(SRCS:M${_i}devs.h)
   CLEANFILES+=    ${_i}devs.h
   .if !exists(@)
   ${_i}devs.h: @
   .else
   ${_i}devs.h: @/tools/${_i}devs2h.awk @/dev/${_i}/${_i}devs
   .endif
           ${AWK} -f @/tools/${_i}devs2h.awk @/dev/${_i}/${_i}devs
   .endif
   .endfor # _i
   
   .if !empty(SRCS:Musbdevs.h)
   CLEANFILES+=    usbdevs.h
   .if !exists(@)
   usbdevs.h: @
   .else
   usbdevs.h: @/tools/usbdevs2h.awk @/dev/usb/usbdevs
   .endif
           ${AWK} -f @/tools/usbdevs2h.awk @/dev/usb/usbdevs -h
   .endif
   
   .if !empty(SRCS:Musbdevs_data.h)
   CLEANFILES+=    usbdevs_data.h
   .if !exists(@)
   usbdevs_data.h: @
   .else
   usbdevs_data.h: @/tools/usbdevs2h.awk @/dev/usb/usbdevs
   .endif
           ${AWK} -f @/tools/usbdevs2h.awk @/dev/usb/usbdevs -d
   .endif
   
   .if !empty(SRCS:Macpi_quirks.h)
   CLEANFILES+=    acpi_quirks.h
   .if !exists(@)
   acpi_quirks.h: @
   .else
   acpi_quirks.h: @/tools/acpi_quirks2h.awk @/dev/acpica/acpi_quirks
   .endif
           ${AWK} -f @/tools/acpi_quirks2h.awk @/dev/acpica/acpi_quirks
   .endif
   
   .if !empty(SRCS:Massym.s)
   CLEANFILES+=    assym.s genassym.o
   assym.s: genassym.o
   .if defined(KERNBUILDDIR)
   genassym.o: opt_global.h
   .endif
   .if !exists(@)
   assym.s: @
   .else
   assym.s: @/kern/genassym.sh
   .endif
           sh @/kern/genassym.sh genassym.o > ${.TARGET}
   .if exists(@)
   genassym.o: @/${MACHINE_ARCH}/${MACHINE_ARCH}/genassym.c
   .endif
   genassym.o: @ machine ${SRCS:Mopt_*.h}
           ${CC} -c ${CFLAGS:N-fno-common} \
               @/${MACHINE_ARCH}/${MACHINE_ARCH}/genassym.c
   .endif
   
   lint: ${SRCS}
           ${LINT} ${LINTKERNFLAGS} ${CFLAGS:M-[DILU]*} ${.ALLSRC:M*.c}
   
   .if defined(KERNBUILDDIR)
   ${OBJS}: opt_global.h
   .endif
   
   .include <bsd.dep.mk>
   
   cleandepend: cleanilinks
   # .depend needs include links so we remove them only together.
   cleanilinks:
           rm -f ${_ILINKS}
   
   .if !exists(${.OBJDIR}/${DEPENDFILE})
   ${OBJS}: ${SRCS:M*.h}
   .endif
   
   .include <bsd.obj.mk>
   .include "kern.mk"

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