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

Version: -  FREEBSD  -  FREEBSD-13-STABLE  -  FREEBSD-13-0  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  l41  -  OPENBSD  -  linux-2.6  -  MK84  -  PLAN9  -  xnu-8792 
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    1 # $FreeBSD$
    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 SRCCONF?=       /etc/src.conf
    7 .if exists(${SRCCONF})
    8 .include "${SRCCONF}"
    9 .endif
   10 
   11 # Can be overridden by makeoptions or /etc/make.conf
   12 KERNEL_KO?=     kernel
   13 KERNEL?=        kernel
   14 KODIR?=         /boot/${KERNEL}
   15 
   16 M=      ${MACHINE_ARCH}
   17 
   18 AWK?=           awk
   19 LINT?=          lint
   20 NM?=            nm
   21 OBJCOPY?=       objcopy
   22 SIZE?=          size
   23 
   24 .if ${CC} == "icc"
   25 COPTFLAGS?=     -O
   26 .else
   27 . if defined(DEBUG)
   28 _MINUS_O=       -O
   29 . else
   30 _MINUS_O=       -O2
   31 . endif
   32 . if ${MACHINE_ARCH} == "amd64"
   33 COPTFLAGS?=-O2 -frename-registers -pipe
   34 . else
   35 COPTFLAGS?=${_MINUS_O} -pipe
   36 . endif
   37 . if !empty(COPTFLAGS:M-O[23s]) && empty(COPTFLAGS:M-fno-strict-aliasing)
   38 COPTFLAGS+= -fno-strict-aliasing
   39 . endif
   40 .endif
   41 .if !defined(NO_CPU_COPTFLAGS)
   42 . if ${CC} == "icc"
   43 COPTFLAGS+= ${_ICC_CPUCFLAGS:C/(-x[^M^K^W]+)[MKW]+|-x[MKW]+/\1/}
   44 . else
   45 COPTFLAGS+= ${_CPUCFLAGS}
   46 . endif
   47 .endif
   48 .if ${CC} == "icc"
   49 C_DIALECT=
   50 NOSTDINC= -X
   51 .else
   52 C_DIALECT= -std=c99
   53 NOSTDINC= -nostdinc
   54 .endif
   55 
   56 INCLUDES= ${NOSTDINC} ${INCLMAGIC} -I. -I$S
   57 
   58 # This hack lets us use the OpenBSD altq code without spamming a new
   59 # include path into contrib'ed source files.
   60 INCLUDES+= -I$S/contrib/altq
   61 
   62 .if make(depend) || make(kernel-depend)
   63 
   64 # ... and the same for ipfilter
   65 INCLUDES+= -I$S/contrib/ipfilter
   66 
   67 # ... and the same for pf
   68 INCLUDES+= -I$S/contrib/pf
   69 
   70 # ... and the same for Atheros HAL
   71 INCLUDES+= -I$S/dev/ath
   72 
   73 # ... and the same for the NgATM stuff
   74 INCLUDES+= -I$S/contrib/ngatm
   75 
   76 # .. and the same for twa
   77 INCLUDES+= -I$S/dev/twa
   78 
   79 # ...  and XFS
   80 INCLUDES+= -I$S/gnu/fs/xfs/FreeBSD -I$S/gnu/fs/xfs/FreeBSD/support -I$S/gnu/fs/xfs
   81 
   82 # ...  and OpenSolaris
   83 INCLUDES+= -I$S/contrib/opensolaris/compat
   84 
   85 .endif
   86 
   87 CFLAGS= ${COPTFLAGS} ${C_DIALECT} ${DEBUG} ${CWARNFLAGS}
   88 CFLAGS+= ${INCLUDES} -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h
   89 .if ${CC} != "icc"
   90 CFLAGS+= -fno-common -finline-limit=${INLINE_LIMIT}
   91 CFLAGS+= --param inline-unit-growth=100
   92 CFLAGS+= --param large-function-growth=1000
   93 .if ${MACHINE_ARCH} == "amd64" || ${MACHINE} == "i386" || \
   94     ${MACHINE_ARCH} == "ia64" || ${MACHINE_ARCH} == "powerpc" || \
   95     ${MACHINE_ARCH} == "sparc64"
   96 WERROR?= -Werror
   97 .endif
   98 .endif
   99 
  100 # XXX LOCORE means "don't declare C stuff" not "for locore.s".
  101 ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS}
  102 
  103 .if defined(PROFLEVEL) && ${PROFLEVEL} >= 1
  104 .if ${CC} == "icc"
  105 .error "Profiling doesn't work with icc yet"
  106 .endif
  107 CFLAGS+=        -DGPROF -falign-functions=16
  108 .if ${PROFLEVEL} >= 2
  109 CFLAGS+=        -DGPROF4 -DGUPROF
  110 PROF=   -pg -mprofiler-epilogue
  111 .else
  112 PROF=   -pg
  113 .endif
  114 .endif
  115 DEFINED_PROF=   ${PROF}
  116 
  117 # Put configuration-specific C flags last (except for ${PROF}) so that they
  118 # can override the others.
  119 CFLAGS+=        ${CONF_CFLAGS}
  120 
  121 # Optional linting. This can be overridden in /etc/make.conf.
  122 LINTFLAGS=      ${LINTOBJKERNFLAGS}
  123 
  124 NORMAL_C= ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
  125 NORMAL_S= ${CC} -c ${ASM_CFLAGS} ${WERROR} ${.IMPSRC}
  126 PROFILE_C= ${CC} -c ${CFLAGS} ${WERROR} ${.IMPSRC}
  127 NORMAL_C_NOWERROR= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC}
  128 
  129 NORMAL_M= ${AWK} -f $S/tools/makeobjops.awk ${.IMPSRC} -c ; \
  130           ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.PREFIX}.c
  131 
  132 .if defined(CTFCONVERT)
  133 NORMAL_CTFCONVERT= ${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
  134 .else
  135 NORMAL_CTFCONVERT=
  136 .endif
  137 
  138 NORMAL_LINT=    ${LINT} ${LINTFLAGS} ${CFLAGS:M-[DIU]*} ${.IMPSRC}
  139 
  140 GEN_CFILES= $S/$M/$M/genassym.c ${MFILES:T:S/.m$/.c/}
  141 SYSTEM_CFILES= config.c env.c hints.c vnode_if.c
  142 SYSTEM_DEP= Makefile ${SYSTEM_OBJS}
  143 SYSTEM_OBJS= locore.o ${MDOBJS} ${OBJS}
  144 SYSTEM_OBJS+= ${SYSTEM_CFILES:.c=.o}
  145 SYSTEM_OBJS+= hack.So
  146 .if defined(CTFMERGE)
  147 SYSTEM_CTFMERGE= ${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ${SYSTEM_OBJS} vers.o
  148 LD+= -g
  149 .endif
  150 SYSTEM_LD= @${LD} -Bdynamic -T $S/conf/ldscript.$M \
  151         -warn-common -export-dynamic -dynamic-linker /red/herring \
  152         -o ${.TARGET} -X ${SYSTEM_OBJS} vers.o
  153 SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \
  154         ${SIZE} ${.TARGET} ; chmod 755 ${.TARGET}
  155 SYSTEM_DEP+= $S/conf/ldscript.$M
  156 
  157 # MKMODULESENV is set here so that port makefiles can augment
  158 # them.
  159 
  160 MKMODULESENV=   MAKEOBJDIRPREFIX=${.OBJDIR}/modules KMODDIR=${KODIR}
  161 .if (${KERN_IDENT} == LINT)
  162 MKMODULESENV+=  ALL_MODULES=LINT
  163 .endif
  164 .if defined(MODULES_OVERRIDE)
  165 MKMODULESENV+=  MODULES_OVERRIDE="${MODULES_OVERRIDE}"
  166 .endif
  167 .if defined(DEBUG)
  168 MKMODULESENV+=  DEBUG_FLAGS="${DEBUG}"
  169 .endif

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