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/7.3/sys/conf/kern.pre.mk 193539 2009-06-05 22:23:33Z gnn $
    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 # Can be overridden by makeoptions or /etc/make.conf
    9 KERNEL_KO?=     kernel
   10 KERNEL?=        kernel
   11 KODIR?=         /boot/${KERNEL}
   12 
   13 M=      ${MACHINE_ARCH}
   14 
   15 AWK?=           awk
   16 LINT?=          lint
   17 NM?=            nm
   18 OBJCOPY?=       objcopy
   19 SIZE?=          size
   20 
   21 .if ${CC} == "icc"
   22 COPTFLAGS?=     -O
   23 .else
   24 . if defined(DEBUG)
   25 _MINUS_O=       -O
   26 CTFFLAGS+=      -g
   27 . else
   28 _MINUS_O=       -O2
   29 . endif
   30 . if ${MACHINE_ARCH} == "amd64"
   31 COPTFLAGS?=-O2 -frename-registers -pipe
   32 . else
   33 COPTFLAGS?=${_MINUS_O} -pipe
   34 . endif
   35 . if !empty(COPTFLAGS:M-O[23s]) && empty(COPTFLAGS:M-fno-strict-aliasing)
   36 COPTFLAGS+= -fno-strict-aliasing
   37 . endif
   38 .endif
   39 .if !defined(NO_CPU_COPTFLAGS)
   40 . if ${CC} == "icc"
   41 COPTFLAGS+= ${_ICC_CPUCFLAGS:C/(-x[^M^K^W]+)[MKW]+|-x[MKW]+/\1/}
   42 . else
   43 COPTFLAGS+= ${_CPUCFLAGS}
   44 . endif
   45 .endif
   46 .if ${CC} == "icc"
   47 C_DIALECT=
   48 NOSTDINC= -X
   49 .else
   50 C_DIALECT= -std=c99
   51 NOSTDINC= -nostdinc
   52 .endif
   53 
   54 INCLUDES= ${NOSTDINC} ${INCLMAGIC} -I. -I$S
   55 
   56 # This hack lets us use the OpenBSD altq code without spamming a new
   57 # include path into contrib'ed source files.
   58 INCLUDES+= -I$S/contrib/altq
   59 
   60 .if make(depend) || make(kernel-depend)
   61 
   62 # ... and the same for ipfilter
   63 INCLUDES+= -I$S/contrib/ipfilter
   64 
   65 # ... and the same for pf
   66 INCLUDES+= -I$S/contrib/pf
   67 
   68 # ... and the same for ath
   69 INCLUDES+= -I$S/dev/ath -I$S/dev/ath/ath_hal
   70 
   71 # ... and the same for the NgATM stuff
   72 INCLUDES+= -I$S/contrib/ngatm
   73 
   74 # .. and the same for twa
   75 INCLUDES+= -I$S/dev/twa
   76 
   77 # ...  and XFS
   78 INCLUDES+= -I$S/gnu/fs/xfs/FreeBSD -I$S/gnu/fs/xfs/FreeBSD/support -I$S/gnu/fs/xfs
   79 
   80 # ...  and OpenSolaris
   81 INCLUDES+= -I$S/contrib/opensolaris/compat
   82 
   83 # ... and the same for cxgb
   84 INCLUDES+= -I$S/dev/cxgb
   85 
   86 .endif
   87 
   88 CFLAGS= ${COPTFLAGS} ${C_DIALECT} ${DEBUG} ${CWARNFLAGS}
   89 CFLAGS+= ${INCLUDES} -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h
   90 .if ${CC} != "icc"
   91 CFLAGS+= -fno-common -finline-limit=${INLINE_LIMIT}
   92 CFLAGS+= --param inline-unit-growth=100
   93 CFLAGS+= --param large-function-growth=1000
   94 .if ${MACHINE_ARCH} == "amd64" || ${MACHINE} == "i386" || \
   95     ${MACHINE_ARCH} == "ia64" || ${MACHINE_ARCH} == "powerpc" || \
   96     ${MACHINE_ARCH} == "sparc64"
   97 WERROR?= -Werror
   98 .endif
   99 .endif
  100 
  101 # XXX LOCORE means "don't declare C stuff" not "for locore.s".
  102 ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS}
  103 
  104 .if defined(PROFLEVEL) && ${PROFLEVEL} >= 1
  105 .if ${CC} == "icc"
  106 .error "Profiling doesn't work with icc yet"
  107 .endif
  108 CFLAGS+=        -DGPROF -falign-functions=16
  109 .if ${PROFLEVEL} >= 2
  110 CFLAGS+=        -DGPROF4 -DGUPROF
  111 PROF=   -pg -mprofiler-epilogue
  112 .else
  113 PROF=   -pg
  114 .endif
  115 .endif
  116 DEFINED_PROF=   ${PROF}
  117 
  118 # Put configuration-specific C flags last (except for ${PROF}) so that they
  119 # can override the others.
  120 CFLAGS+=        ${CONF_CFLAGS}
  121 
  122 # Optional linting. This can be overridden in /etc/make.conf.
  123 LINTFLAGS=      ${LINTOBJKERNFLAGS}
  124 
  125 NORMAL_C= ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
  126 NORMAL_S= ${CC} -c ${ASM_CFLAGS} ${WERROR} ${.IMPSRC}
  127 PROFILE_C= ${CC} -c ${CFLAGS} ${WERROR} ${.IMPSRC}
  128 NORMAL_C_NOWERROR= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC}
  129 
  130 NORMAL_M= ${AWK} -f $S/tools/makeobjops.awk ${.IMPSRC} -c ; \
  131           ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.PREFIX}.c
  132 
  133 .if defined(CTFCONVERT)
  134 NORMAL_CTFCONVERT= ${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
  135 .else
  136 NORMAL_CTFCONVERT=
  137 .endif
  138 
  139 NORMAL_LINT=    ${LINT} ${LINTFLAGS} ${CFLAGS:M-[DIU]*} ${.IMPSRC}
  140 
  141 GEN_CFILES= $S/$M/$M/genassym.c ${MFILES:T:S/.m$/.c/}
  142 SYSTEM_CFILES= config.c env.c hints.c vnode_if.c
  143 SYSTEM_DEP= Makefile ${SYSTEM_OBJS}
  144 SYSTEM_OBJS= locore.o ${MDOBJS} ${OBJS}
  145 SYSTEM_OBJS+= ${SYSTEM_CFILES:.c=.o}
  146 SYSTEM_OBJS+= hack.So
  147 .if defined(CTFMERGE)
  148 SYSTEM_CTFMERGE= ${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ${SYSTEM_OBJS} vers.o
  149 LD+= -g
  150 .endif
  151 SYSTEM_LD= @${LD} -Bdynamic -T $S/conf/ldscript.$M \
  152         -warn-common -export-dynamic -dynamic-linker /red/herring \
  153         -o ${.TARGET} -X ${SYSTEM_OBJS} vers.o
  154 SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \
  155         ${SIZE} ${.TARGET} ; chmod 755 ${.TARGET}
  156 SYSTEM_DEP+= $S/conf/ldscript.$M
  157 
  158 # MKMODULESENV is set here so that port makefiles can augment
  159 # them.
  160 
  161 MKMODULESENV=   MAKEOBJDIRPREFIX=${.OBJDIR}/modules KMODDIR=${KODIR}
  162 .if (${KERN_IDENT} == LINT)
  163 MKMODULESENV+=  ALL_MODULES=LINT
  164 .endif
  165 .if defined(MODULES_OVERRIDE)
  166 MKMODULESENV+=  MODULES_OVERRIDE="${MODULES_OVERRIDE}"
  167 .endif
  168 .if defined(DEBUG)
  169 MKMODULESENV+=  DEBUG_FLAGS="${DEBUG}"
  170 .endif

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