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/6.2/sys/conf/kern.pre.mk 164286 2006-11-14 20:42:41Z cvs2svn $
    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 # Can be overridden by makeoptions or /etc/make.conf
    7 KERNEL_KO?=     kernel
    8 KERNEL?=        kernel
    9 KODIR?=         /boot/${KERNEL}
   10 
   11 M=      ${MACHINE_ARCH}
   12 
   13 AWK?=           awk
   14 LINT?=          lint
   15 NM?=            nm
   16 OBJCOPY?=       objcopy
   17 SIZE?=          size
   18 
   19 .if ${CC} == "icc"
   20 COPTFLAGS?=     -O
   21 .else
   22 . if defined(DEBUG)
   23 _MINUS_O=       -O
   24 . else
   25 _MINUS_O=       -O2
   26 . endif
   27 . if ${MACHINE_ARCH} == "amd64"
   28 COPTFLAGS?=-O2 -frename-registers -pipe
   29 . else
   30 COPTFLAGS?=${_MINUS_O} -pipe
   31 . endif
   32 . if !empty(COPTFLAGS:M-O[23s]) && empty(COPTFLAGS:M-fno-strict-aliasing)
   33 COPTFLAGS+= -fno-strict-aliasing
   34 . endif
   35 .endif
   36 .if !defined(NO_CPU_COPTFLAGS)
   37 . if ${CC} == "icc"
   38 COPTFLAGS+= ${_ICC_CPUCFLAGS:C/(-x[^M^K^W]+)[MKW]+|-x[MKW]+/\1/}
   39 . else
   40 COPTFLAGS+= ${_CPUCFLAGS}
   41 . endif
   42 .endif
   43 .if ${CC} == "icc"
   44 NOSTDINC= -X
   45 .else
   46 NOSTDINC= -nostdinc
   47 .endif
   48 
   49 INCLUDES= ${NOSTDINC} -I- ${INCLMAGIC} -I. -I$S
   50 
   51 # This hack lets us use the OpenBSD altq code without spamming a new
   52 # include path into contrib'ed source files.
   53 INCLUDES+= -I$S/contrib/altq
   54 
   55 # ... and the same for ipfilter
   56 INCLUDES+= -I$S/contrib/ipfilter
   57 
   58 # ... and the same for pf
   59 INCLUDES+= -I$S/contrib/pf
   60 
   61 # ... and the same for Atheros HAL
   62 INCLUDES+= -I$S/dev/ath
   63 
   64 # ... and the same for the NgATM stuff
   65 INCLUDES+= -I$S/contrib/ngatm
   66 
   67 # .. and the same for twa
   68 INCLUDES+= -I$S/dev/twa
   69 
   70 CFLAGS= ${COPTFLAGS} ${CWARNFLAGS} ${DEBUG}
   71 CFLAGS+= ${INCLUDES} -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h
   72 .if ${CC} != "icc"
   73 CFLAGS+= -fno-common -finline-limit=${INLINE_LIMIT}
   74 CFLAGS+= --param inline-unit-growth=100
   75 CFLAGS+= --param large-function-growth=1000
   76 WERROR?= -Werror
   77 .endif
   78 
   79 # XXX LOCORE means "don't declare C stuff" not "for locore.s".
   80 ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS}
   81 
   82 .if defined(PROFLEVEL) && ${PROFLEVEL} >= 1
   83 .if ${CC} == "icc"
   84 .error Profiling doesn't work with ICC yet.
   85 .else
   86 CFLAGS+=        -DGPROF -falign-functions=16
   87 .endif
   88 .if ${PROFLEVEL} >= 2
   89 CFLAGS+=        -DGPROF4 -DGUPROF
   90 . if ${CC} == "icc"
   91 # XXX doesn't work yet
   92 #PROF=  -prof_gen
   93 . else
   94 PROF=   -finstrument-functions -Wno-inline
   95 . endif
   96 .else
   97 . if ${CC} == "icc"
   98 PROF=   -p
   99 . else
  100 PROF=   -pg
  101 . endif
  102 .endif
  103 .endif
  104 DEFINED_PROF=   ${PROF}
  105 
  106 # Put configuration-specific C flags last (except for ${PROF}) so that they
  107 # can override the others.
  108 CFLAGS+=        ${CONF_CFLAGS}
  109 
  110 # Optional linting. This can be overridden in /etc/make.conf.
  111 LINTFLAGS=      ${LINTOBJKERNFLAGS}
  112 
  113 NORMAL_C= ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
  114 NORMAL_S= ${CC} -c ${ASM_CFLAGS} ${WERROR} ${.IMPSRC}
  115 PROFILE_C= ${CC} -c ${CFLAGS} ${WERROR} ${.IMPSRC}
  116 NORMAL_C_NOWERROR= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC}
  117 
  118 NORMAL_M= ${AWK} -f $S/tools/makeobjops.awk ${.IMPSRC} -c ; \
  119           ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.PREFIX}.c
  120 
  121 NORMAL_LINT=    ${LINT} ${LINTFLAGS} ${CFLAGS:M-[DIU]*} ${.IMPSRC}
  122 
  123 GEN_CFILES= $S/$M/$M/genassym.c ${MFILES:T:S/.m$/.c/}
  124 SYSTEM_CFILES= config.c env.c hints.c vnode_if.c
  125 SYSTEM_DEP= Makefile ${SYSTEM_OBJS}
  126 SYSTEM_OBJS= locore.o ${MDOBJS} ${OBJS}
  127 SYSTEM_OBJS+= ${SYSTEM_CFILES:.c=.o}
  128 SYSTEM_OBJS+= hack.So
  129 SYSTEM_LD= @${LD} -Bdynamic -T $S/conf/ldscript.$M \
  130         -warn-common -export-dynamic -dynamic-linker /red/herring \
  131         -o ${.TARGET} -X ${SYSTEM_OBJS} vers.o
  132 SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \
  133         ${SIZE} ${.TARGET} ; chmod 755 ${.TARGET}
  134 SYSTEM_DEP+= $S/conf/ldscript.$M
  135 
  136 # MKMODULESENV is set here so that port makefiles can augment
  137 # them.
  138 
  139 MKMODULESENV=   MAKEOBJDIRPREFIX=${.OBJDIR}/modules KMODDIR=${KODIR}
  140 .if (${KERN_IDENT} == LINT)
  141 MKMODULESENV+=  ALL_MODULES=LINT
  142 .endif
  143 .if defined(MODULES_OVERRIDE)
  144 MKMODULESENV+=  MODULES_OVERRIDE="${MODULES_OVERRIDE}"
  145 .endif
  146 .if defined(DEBUG)
  147 MKMODULESENV+=  DEBUG_FLAGS="${DEBUG}"
  148 .endif

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