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 # $FreeBSD$
    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 .sinclude <bsd.compiler.mk>
    8 
    9 # backwards compat option for older systems.
   10 MACHINE_CPUARCH?=${MACHINE_ARCH:C/mipse[lb]/mips/:C/armeb/arm/:C/powerpc64/powerpc/}
   11 COMPILER_TYPE?="gcc"
   12 
   13 # Can be overridden by makeoptions or /etc/make.conf
   14 KERNEL_KO?=     kernel
   15 KERNEL?=        kernel
   16 KODIR?=         /boot/${KERNEL}
   17 LDSCRIPT_NAME?= ldscript.$M
   18 LDSCRIPT?=      $S/conf/${LDSCRIPT_NAME}
   19 
   20 M=              ${MACHINE_CPUARCH}
   21 
   22 AWK?=           awk
   23 CP?=            cp
   24 LINT?=          lint
   25 NM?=            nm
   26 OBJCOPY?=       objcopy
   27 SIZE?=          size
   28 
   29 .if defined(DEBUG)
   30 _MINUS_O=       -O
   31 CTFFLAGS+=      -g
   32 .else
   33 .if ${MACHINE_CPUARCH} == "powerpc"
   34 _MINUS_O=       -O      # gcc miscompiles some code at -O2
   35 .else
   36 _MINUS_O=       -O2
   37 .endif
   38 .endif
   39 .if ${MACHINE_CPUARCH} == "amd64"
   40 .if ${COMPILER_TYPE} != "clang"
   41 COPTFLAGS?=-O2 -frename-registers -pipe
   42 .else
   43 COPTFLAGS?=-O2 -pipe
   44 .endif
   45 .else
   46 COPTFLAGS?=${_MINUS_O} -pipe
   47 .endif
   48 .if !empty(COPTFLAGS:M-O[23s]) && empty(COPTFLAGS:M-fno-strict-aliasing)
   49 COPTFLAGS+= -fno-strict-aliasing
   50 .endif
   51 .if !defined(NO_CPU_COPTFLAGS)
   52 COPTFLAGS+= ${_CPUCFLAGS}
   53 .endif
   54 C_DIALECT= -std=c99
   55 NOSTDINC= -nostdinc
   56 
   57 INCLUDES= ${NOSTDINC} ${INCLMAGIC} -I. -I$S
   58 
   59 # This hack lets us use the OpenBSD altq code without spamming a new
   60 # include path into contrib'ed source files.
   61 INCLUDES+= -I$S/contrib/altq
   62 
   63 .if make(depend) || make(kernel-depend)
   64 
   65 # ... and the same for ipfilter
   66 INCLUDES+= -I$S/contrib/ipfilter
   67 
   68 # ... and the same for pf
   69 INCLUDES+= -I$S/contrib/pf
   70 
   71 # ... and the same for ath
   72 INCLUDES+= -I$S/dev/ath -I$S/dev/ath/ath_hal
   73 
   74 # ... and the same for the NgATM stuff
   75 INCLUDES+= -I$S/contrib/ngatm
   76 
   77 # ... and the same for twa
   78 INCLUDES+= -I$S/dev/twa
   79 
   80 # ... and the same for XFS
   81 INCLUDES+= -I$S/gnu/fs/xfs/FreeBSD -I$S/gnu/fs/xfs/FreeBSD/support -I$S/gnu/fs/xfs
   82 
   83 # ... and the same for cxgb and cxgbe
   84 INCLUDES+= -I$S/dev/cxgb -I$S/dev/cxgbe
   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 ${COMPILER_TYPE} != "clang"
   91 CFLAGS+= -fno-common -finline-limit=${INLINE_LIMIT}
   92 .if ${MACHINE_CPUARCH} != "mips"
   93 CFLAGS+= --param inline-unit-growth=100
   94 CFLAGS+= --param large-function-growth=1000
   95 .else
   96 # XXX Actually a gross hack just for Octeon because of the Simple Executive.
   97 CFLAGS+= --param inline-unit-growth=10000
   98 CFLAGS+= --param large-function-growth=100000
   99 CFLAGS+= --param max-inline-insns-single=10000
  100 .endif
  101 .endif
  102 WERROR?= -Werror
  103 
  104 # XXX LOCORE means "don't declare C stuff" not "for locore.s".
  105 ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS}
  106 
  107 .if ${COMPILER_TYPE} == "clang"
  108 CLANG_NO_IAS= -no-integrated-as
  109 .else
  110 GCC_MS_EXTENSIONS= -fms-extensions
  111 .endif
  112 
  113 .if defined(PROFLEVEL) && ${PROFLEVEL} >= 1
  114 CFLAGS+=        -DGPROF
  115 .if ${COMPILER_TYPE} != "clang"
  116 CFLAGS+=        -falign-functions=16
  117 .endif
  118 .if ${PROFLEVEL} >= 2
  119 CFLAGS+=        -DGPROF4 -DGUPROF
  120 PROF=           -pg
  121 .if ${COMPILER_TYPE} != "clang"
  122 PROF+=          -mprofiler-epilogue
  123 .endif
  124 .else
  125 PROF=           -pg
  126 .endif
  127 .endif
  128 DEFINED_PROF=   ${PROF}
  129 
  130 # Put configuration-specific C flags last (except for ${PROF}) so that they
  131 # can override the others.
  132 CFLAGS+=        ${CONF_CFLAGS}
  133 
  134 # Optional linting. This can be overridden in /etc/make.conf.
  135 LINTFLAGS=      ${LINTOBJKERNFLAGS}
  136 
  137 NORMAL_C= ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
  138 NORMAL_S= ${CC} -c ${ASM_CFLAGS} ${WERROR} ${.IMPSRC}
  139 PROFILE_C= ${CC} -c ${CFLAGS} ${WERROR} ${.IMPSRC}
  140 NORMAL_C_NOWERROR= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC}
  141 
  142 NORMAL_M= ${AWK} -f $S/tools/makeobjops.awk ${.IMPSRC} -c ; \
  143           ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.PREFIX}.c
  144 
  145 NORMAL_FW= uudecode -o ${.TARGET} ${.ALLSRC}
  146 NORMAL_FWO= ${LD} -b binary --no-warn-mismatch -d -warn-common -r \
  147         -o ${.TARGET} ${.ALLSRC:M*.fw}
  148 
  149 .if ${MK_CTF} != "no"
  150 NORMAL_CTFCONVERT=      ${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
  151 .elif ${MAKE_VERSION} >= 9201210220
  152 NORMAL_CTFCONVERT=
  153 .else
  154 NORMAL_CTFCONVERT=      @:
  155 .endif
  156 
  157 NORMAL_LINT=    ${LINT} ${LINTFLAGS} ${CFLAGS:M-[DIU]*} ${.IMPSRC}
  158 
  159 # Infiniband C flags.  Correct include paths and omit errors that linux
  160 # does not honor.
  161 OFEDINCLUDES=   -I$S/ofed/include/
  162 OFEDNOERR=      -Wno-cast-qual -Wno-pointer-arith ${GCC_MS_EXTENSIONS}
  163 OFEDCFLAGS=     ${CFLAGS:N-I*} ${OFEDINCLUDES} ${CFLAGS:M-I*} ${OFEDNOERR}
  164 OFED_C_NOIMP=   ${CC} -c -o ${.TARGET} ${OFEDCFLAGS} ${WERROR} ${PROF}
  165 OFED_C=         ${OFED_C_NOIMP} ${.IMPSRC}
  166 
  167 GEN_CFILES= $S/$M/$M/genassym.c ${MFILES:T:S/.m$/.c/}
  168 SYSTEM_CFILES= config.c env.c hints.c vnode_if.c
  169 SYSTEM_DEP= Makefile ${SYSTEM_OBJS}
  170 SYSTEM_OBJS= locore.o ${MDOBJS} ${OBJS}
  171 SYSTEM_OBJS+= ${SYSTEM_CFILES:.c=.o}
  172 SYSTEM_OBJS+= hack.So
  173 SYSTEM_LD= @${LD} -Bdynamic -T ${LDSCRIPT} --no-warn-mismatch \
  174         -warn-common -export-dynamic -dynamic-linker /red/herring \
  175         -o ${.TARGET} -X ${SYSTEM_OBJS} vers.o
  176 SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \
  177         ${SIZE} ${.TARGET} ; chmod 755 ${.TARGET}
  178 SYSTEM_DEP+= ${LDSCRIPT}
  179 
  180 # MKMODULESENV is set here so that port makefiles can augment
  181 # them.
  182 
  183 MKMODULESENV+=  MAKEOBJDIRPREFIX=${.OBJDIR}/modules KMODDIR=${KODIR}
  184 MKMODULESENV+=  MACHINE_CPUARCH=${MACHINE_CPUARCH}
  185 .if (${KERN_IDENT} == LINT)
  186 MKMODULESENV+=  ALL_MODULES=LINT
  187 .endif
  188 .if defined(MODULES_OVERRIDE)
  189 MKMODULESENV+=  MODULES_OVERRIDE="${MODULES_OVERRIDE}"
  190 .endif
  191 .if defined(WITHOUT_MODULES)
  192 MKMODULESENV+=  WITHOUT_MODULES="${WITHOUT_MODULES}"
  193 .endif
  194 .if defined(DEBUG)
  195 MKMODULESENV+=  DEBUG_FLAGS="${DEBUG}"
  196 .endif

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