The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/conf/kern.pre.mk

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    1 # $FreeBSD: releng/9.0/sys/conf/kern.pre.mk 224882 2011-08-15 13:33:14Z nwhitehorn $
    2 
    3 # Part of a unified Makefile for building kernels.  This part contains all
    4 # of the definitions that need to be before %BEFORE_DEPEND.
    5 
    6 .include <bsd.own.mk>
    7 
    8 # backwards compat option for older systems.
    9 MACHINE_CPUARCH?=${MACHINE_ARCH:C/mipse[lb]/mips/:C/armeb/arm/:C/powerpc64/powerpc/}
   10 
   11 # Can be overridden by makeoptions or /etc/make.conf
   12 KERNEL_KO?=     kernel
   13 KERNEL?=        kernel
   14 KODIR?=         /boot/${KERNEL}
   15 LDSCRIPT_NAME?= ldscript.$M
   16 LDSCRIPT?=      $S/conf/${LDSCRIPT_NAME}
   17 
   18 M=              ${MACHINE_CPUARCH}
   19 
   20 AWK?=           awk
   21 LINT?=          lint
   22 NM?=            nm
   23 OBJCOPY?=       objcopy
   24 SIZE?=          size
   25 
   26 .if defined(DEBUG)
   27 _MINUS_O=       -O
   28 CTFFLAGS+=      -g
   29 .else
   30 .if ${MACHINE_CPUARCH} == "powerpc"
   31 _MINUS_O=       -O      # gcc miscompiles some code at -O2
   32 .else
   33 _MINUS_O=       -O2
   34 .endif
   35 .endif
   36 .if ${MACHINE_CPUARCH} == "amd64"
   37 COPTFLAGS?=-O2 -frename-registers -pipe
   38 .else
   39 COPTFLAGS?=${_MINUS_O} -pipe
   40 .endif
   41 .if !empty(COPTFLAGS:M-O[23s]) && empty(COPTFLAGS:M-fno-strict-aliasing)
   42 COPTFLAGS+= -fno-strict-aliasing
   43 .endif
   44 .if !defined(NO_CPU_COPTFLAGS)
   45 COPTFLAGS+= ${_CPUCFLAGS}
   46 .endif
   47 C_DIALECT= -std=c99
   48 NOSTDINC= -nostdinc
   49 
   50 INCLUDES= ${NOSTDINC} ${INCLMAGIC} -I. -I$S
   51 
   52 # This hack lets us use the OpenBSD altq code without spamming a new
   53 # include path into contrib'ed source files.
   54 INCLUDES+= -I$S/contrib/altq
   55 
   56 .if make(depend) || make(kernel-depend)
   57 
   58 # ... and the same for ipfilter
   59 INCLUDES+= -I$S/contrib/ipfilter
   60 
   61 # ... and the same for pf
   62 INCLUDES+= -I$S/contrib/pf
   63 
   64 # ... and the same for ath
   65 INCLUDES+= -I$S/dev/ath -I$S/dev/ath/ath_hal
   66 
   67 # ... and the same for the NgATM stuff
   68 INCLUDES+= -I$S/contrib/ngatm
   69 
   70 # .. and the same for twa
   71 INCLUDES+= -I$S/dev/twa
   72 
   73 # ...  and XFS
   74 INCLUDES+= -I$S/gnu/fs/xfs/FreeBSD -I$S/gnu/fs/xfs/FreeBSD/support -I$S/gnu/fs/xfs
   75 
   76 # ... and the same for cxgb and cxgbe
   77 INCLUDES+= -I$S/dev/cxgb -I$S/dev/cxgbe
   78 
   79 .endif
   80 
   81 CFLAGS= ${COPTFLAGS} ${C_DIALECT} ${DEBUG} ${CWARNFLAGS}
   82 CFLAGS+= ${INCLUDES} -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h
   83 .if ${CC:T:Mclang} != "clang"
   84 CFLAGS+= -fno-common -finline-limit=${INLINE_LIMIT}
   85 .if ${MACHINE_CPUARCH} != "mips"
   86 CFLAGS+= --param inline-unit-growth=100
   87 CFLAGS+= --param large-function-growth=1000
   88 .else
   89 # XXX Actually a gross hack just for Octeon because of the Simple Executive.
   90 CFLAGS+= --param inline-unit-growth=10000
   91 CFLAGS+= --param large-function-growth=100000
   92 CFLAGS+= --param max-inline-insns-single=10000
   93 .endif
   94 .endif
   95 WERROR?= -Werror
   96 
   97 # XXX LOCORE means "don't declare C stuff" not "for locore.s".
   98 ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS}
   99 
  100 .if defined(PROFLEVEL) && ${PROFLEVEL} >= 1
  101 CFLAGS+=        -DGPROF -falign-functions=16
  102 .if ${PROFLEVEL} >= 2
  103 CFLAGS+=        -DGPROF4 -DGUPROF
  104 PROF=   -pg -mprofiler-epilogue
  105 .else
  106 PROF=   -pg
  107 .endif
  108 .endif
  109 DEFINED_PROF=   ${PROF}
  110 
  111 # Put configuration-specific C flags last (except for ${PROF}) so that they
  112 # can override the others.
  113 CFLAGS+=        ${CONF_CFLAGS}
  114 
  115 # Optional linting. This can be overridden in /etc/make.conf.
  116 LINTFLAGS=      ${LINTOBJKERNFLAGS}
  117 
  118 NORMAL_C= ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
  119 NORMAL_S= ${CC} -c ${ASM_CFLAGS} ${WERROR} ${.IMPSRC}
  120 PROFILE_C= ${CC} -c ${CFLAGS} ${WERROR} ${.IMPSRC}
  121 NORMAL_C_NOWERROR= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC}
  122 
  123 NORMAL_M= ${AWK} -f $S/tools/makeobjops.awk ${.IMPSRC} -c ; \
  124           ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.PREFIX}.c
  125 
  126 NORMAL_CTFCONVERT= [ -z "${CTFCONVERT}" -o -n "${NO_CTF}" ] || \
  127                    ${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
  128 
  129 NORMAL_LINT=    ${LINT} ${LINTFLAGS} ${CFLAGS:M-[DIU]*} ${.IMPSRC}
  130 
  131 # Infiniband C flags.  Correct include paths and omit errors that linux
  132 # does not honor.
  133 OFEDINCLUDES=   -I$S/ofed/include/
  134 OFEDNOERR=      -Wno-cast-qual -Wno-pointer-arith -fms-extensions
  135 OFEDCFLAGS=     ${CFLAGS:N-I*} ${OFEDINCLUDES} ${CFLAGS:M-I*} ${OFEDNOERR}
  136 OFED_C_NOIMP=   ${CC} -c -o ${.TARGET} ${OFEDCFLAGS} ${WERROR} ${PROF}
  137 OFED_C=         ${OFED_C_NOIMP} ${.IMPSRC}
  138 
  139 GEN_CFILES= $S/$M/$M/genassym.c ${MFILES:T:S/.m$/.c/}
  140 SYSTEM_CFILES= config.c env.c hints.c vnode_if.c
  141 SYSTEM_DEP= Makefile ${SYSTEM_OBJS}
  142 SYSTEM_OBJS= locore.o ${MDOBJS} ${OBJS}
  143 SYSTEM_OBJS+= ${SYSTEM_CFILES:.c=.o}
  144 SYSTEM_OBJS+= hack.So
  145 SYSTEM_CTFMERGE= [ -z "${CTFMERGE}" -o -n "${NO_CTF}" ] || ${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ${SYSTEM_OBJS} vers.o
  146 SYSTEM_LD= @${LD} -Bdynamic -T ${LDSCRIPT} \
  147         -warn-common -export-dynamic -dynamic-linker /red/herring \
  148         -o ${.TARGET} -X ${SYSTEM_OBJS} vers.o
  149 SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \
  150         ${SIZE} ${.TARGET} ; chmod 755 ${.TARGET}
  151 SYSTEM_DEP+= ${LDSCRIPT}
  152 
  153 # MKMODULESENV is set here so that port makefiles can augment
  154 # them.
  155 
  156 MKMODULESENV+=  MAKEOBJDIRPREFIX=${.OBJDIR}/modules KMODDIR=${KODIR}
  157 MKMODULESENV+=  MACHINE_CPUARCH=${MACHINE_CPUARCH}
  158 .if (${KERN_IDENT} == LINT)
  159 MKMODULESENV+=  ALL_MODULES=LINT
  160 .endif
  161 .if defined(MODULES_OVERRIDE)
  162 MKMODULESENV+=  MODULES_OVERRIDE="${MODULES_OVERRIDE}"
  163 .endif
  164 .if defined(WITHOUT_MODULES)
  165 MKMODULESENV+=  WITHOUT_MODULES="${WITHOUT_MODULES}"
  166 .endif
  167 .if defined(DEBUG)
  168 MKMODULESENV+=  DEBUG_FLAGS="${DEBUG}"
  169 .endif

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