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/9.2/sys/conf/kern.pre.mk 243042 2012-11-14 20:32:43Z dim $
    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 .include <bsd.compiler.mk>
    8 
    9 # backwards compat option for older systems.
   10 MACHINE_CPUARCH?=${MACHINE_ARCH:C/mipse[lb]/mips/:C/armeb/arm/:C/powerpc64/powerpc/}
   11 
   12 # Can be overridden by makeoptions or /etc/make.conf
   13 KERNEL_KO?=     kernel
   14 KERNEL?=        kernel
   15 KODIR?=         /boot/${KERNEL}
   16 LDSCRIPT_NAME?= ldscript.$M
   17 LDSCRIPT?=      $S/conf/${LDSCRIPT_NAME}
   18 
   19 M=              ${MACHINE_CPUARCH}
   20 
   21 AWK?=           awk
   22 CP?=            cp
   23 LINT?=          lint
   24 NM?=            nm
   25 OBJCOPY?=       objcopy
   26 SIZE?=          size
   27 
   28 .if defined(DEBUG)
   29 _MINUS_O=       -O
   30 CTFFLAGS+=      -g
   31 .else
   32 .if ${MACHINE_CPUARCH} == "powerpc"
   33 _MINUS_O=       -O      # gcc miscompiles some code at -O2
   34 .else
   35 _MINUS_O=       -O2
   36 .endif
   37 .endif
   38 .if ${MACHINE_CPUARCH} == "amd64"
   39 .if ${COMPILER_TYPE} != "clang"
   40 COPTFLAGS?=-O2 -frename-registers -pipe
   41 .else
   42 COPTFLAGS?=-O2 -pipe
   43 .endif
   44 .else
   45 COPTFLAGS?=${_MINUS_O} -pipe
   46 .endif
   47 .if !empty(COPTFLAGS:M-O[23s]) && empty(COPTFLAGS:M-fno-strict-aliasing)
   48 COPTFLAGS+= -fno-strict-aliasing
   49 .endif
   50 .if !defined(NO_CPU_COPTFLAGS)
   51 COPTFLAGS+= ${_CPUCFLAGS}
   52 .endif
   53 C_DIALECT= -std=c99
   54 NOSTDINC= -nostdinc
   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$S/contrib/pf
   69 
   70 # ... and the same for ath
   71 INCLUDES+= -I$S/dev/ath -I$S/dev/ath/ath_hal
   72 
   73 # ... and the same for the NgATM stuff
   74 INCLUDES+= -I$S/contrib/ngatm
   75 
   76 # ... and the same for twa
   77 INCLUDES+= -I$S/dev/twa
   78 
   79 # ... and the same for XFS
   80 INCLUDES+= -I$S/gnu/fs/xfs/FreeBSD -I$S/gnu/fs/xfs/FreeBSD/support -I$S/gnu/fs/xfs
   81 
   82 # ... and the same for cxgb and cxgbe
   83 INCLUDES+= -I$S/dev/cxgb -I$S/dev/cxgbe
   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 ${COMPILER_TYPE} != "clang"
   90 CFLAGS+= -fno-common -finline-limit=${INLINE_LIMIT}
   91 .if ${MACHINE_CPUARCH} != "mips"
   92 CFLAGS+= --param inline-unit-growth=100
   93 CFLAGS+= --param large-function-growth=1000
   94 .else
   95 # XXX Actually a gross hack just for Octeon because of the Simple Executive.
   96 CFLAGS+= --param inline-unit-growth=10000
   97 CFLAGS+= --param large-function-growth=100000
   98 CFLAGS+= --param max-inline-insns-single=10000
   99 .endif
  100 .endif
  101 WERROR?= -Werror
  102 
  103 # XXX LOCORE means "don't declare C stuff" not "for locore.s".
  104 ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS}
  105 
  106 .if ${COMPILER_TYPE} == "clang"
  107 CLANG_NO_IAS= -no-integrated-as
  108 .endif
  109 
  110 .if defined(PROFLEVEL) && ${PROFLEVEL} >= 1
  111 CFLAGS+=        -DGPROF
  112 .if ${COMPILER_TYPE} != "clang"
  113 CFLAGS+=        -falign-functions=16
  114 .endif
  115 .if ${PROFLEVEL} >= 2
  116 CFLAGS+=        -DGPROF4 -DGUPROF
  117 PROF=           -pg
  118 .if ${COMPILER_TYPE} != "clang"
  119 PROF+=          -mprofiler-epilogue
  120 .endif
  121 .else
  122 PROF=           -pg
  123 .endif
  124 .endif
  125 DEFINED_PROF=   ${PROF}
  126 
  127 # Put configuration-specific C flags last (except for ${PROF}) so that they
  128 # can override the others.
  129 CFLAGS+=        ${CONF_CFLAGS}
  130 
  131 # Optional linting. This can be overridden in /etc/make.conf.
  132 LINTFLAGS=      ${LINTOBJKERNFLAGS}
  133 
  134 NORMAL_C= ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
  135 NORMAL_S= ${CC} -c ${ASM_CFLAGS} ${WERROR} ${.IMPSRC}
  136 PROFILE_C= ${CC} -c ${CFLAGS} ${WERROR} ${.IMPSRC}
  137 NORMAL_C_NOWERROR= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC}
  138 
  139 NORMAL_M= ${AWK} -f $S/tools/makeobjops.awk ${.IMPSRC} -c ; \
  140           ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.PREFIX}.c
  141 
  142 NORMAL_FW= uudecode -o ${.TARGET} ${.ALLSRC}
  143 NORMAL_FWO= ${LD} -b binary --no-warn-mismatch -d -warn-common -r \
  144         -o ${.TARGET} ${.ALLSRC:M*.fw}
  145 
  146 .if ${MK_CTF} != "no"
  147 NORMAL_CTFCONVERT=      ${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
  148 .elif ${MAKE_VERSION} >= 9201210220
  149 NORMAL_CTFCONVERT=
  150 .else
  151 NORMAL_CTFCONVERT=      @:
  152 .endif
  153 
  154 NORMAL_LINT=    ${LINT} ${LINTFLAGS} ${CFLAGS:M-[DIU]*} ${.IMPSRC}
  155 
  156 # Infiniband C flags.  Correct include paths and omit errors that linux
  157 # does not honor.
  158 OFEDINCLUDES=   -I$S/ofed/include/
  159 OFEDNOERR=      -Wno-cast-qual -Wno-pointer-arith -fms-extensions
  160 OFEDCFLAGS=     ${CFLAGS:N-I*} ${OFEDINCLUDES} ${CFLAGS:M-I*} ${OFEDNOERR}
  161 OFED_C_NOIMP=   ${CC} -c -o ${.TARGET} ${OFEDCFLAGS} ${WERROR} ${PROF}
  162 OFED_C=         ${OFED_C_NOIMP} ${.IMPSRC}
  163 
  164 GEN_CFILES= $S/$M/$M/genassym.c ${MFILES:T:S/.m$/.c/}
  165 SYSTEM_CFILES= config.c env.c hints.c vnode_if.c
  166 SYSTEM_DEP= Makefile ${SYSTEM_OBJS}
  167 SYSTEM_OBJS= locore.o ${MDOBJS} ${OBJS}
  168 SYSTEM_OBJS+= ${SYSTEM_CFILES:.c=.o}
  169 SYSTEM_OBJS+= hack.So
  170 SYSTEM_LD= @${LD} -Bdynamic -T ${LDSCRIPT} --no-warn-mismatch \
  171         -warn-common -export-dynamic -dynamic-linker /red/herring \
  172         -o ${.TARGET} -X ${SYSTEM_OBJS} vers.o
  173 SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \
  174         ${SIZE} ${.TARGET} ; chmod 755 ${.TARGET}
  175 SYSTEM_DEP+= ${LDSCRIPT}
  176 
  177 # MKMODULESENV is set here so that port makefiles can augment
  178 # them.
  179 
  180 MKMODULESENV+=  MAKEOBJDIRPREFIX=${.OBJDIR}/modules KMODDIR=${KODIR}
  181 MKMODULESENV+=  MACHINE_CPUARCH=${MACHINE_CPUARCH}
  182 .if (${KERN_IDENT} == LINT)
  183 MKMODULESENV+=  ALL_MODULES=LINT
  184 .endif
  185 .if defined(MODULES_OVERRIDE)
  186 MKMODULESENV+=  MODULES_OVERRIDE="${MODULES_OVERRIDE}"
  187 .endif
  188 .if defined(WITHOUT_MODULES)
  189 MKMODULESENV+=  WITHOUT_MODULES="${WITHOUT_MODULES}"
  190 .endif
  191 .if defined(DEBUG)
  192 MKMODULESENV+=  DEBUG_FLAGS="${DEBUG}"
  193 .endif

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