FreeBSD/Linux Kernel Cross Reference
sys/conf/kern.pre.mk

     # $FreeBSD$
     
     # Part of a unified Makefile for building kernels.  This part contains all
     # of the definitions that need to be before %BEFORE_DEPEND.
     
     # Can be overridden by makeoptions or /etc/make.conf
     KERNEL_KO?=     kernel
     KERNEL?=        kernel
     KODIR?=         /boot/${KERNEL}
    
    M=      ${MACHINE_ARCH}
    
    AWK?=           awk
    LINT?=          lint
    NM?=            nm
    OBJCOPY?=       objcopy
    SIZE?=          size
    
    .if ${CC} == "icc"
    COPTFLAGS?=     -O
    .else
    . if defined(DEBUG)
    _MINUS_O=       -O
    . else
    _MINUS_O=       -O2
    . endif
    . if ${MACHINE_ARCH} == "amd64"
    COPTFLAGS?=-O2 -frename-registers -pipe
    . else
    COPTFLAGS?=${_MINUS_O} -pipe
    . endif
    . if !empty(COPTFLAGS:M-O[23s]) && empty(COPTFLAGS:M-fno-strict-aliasing)
    COPTFLAGS+= -fno-strict-aliasing
    . endif
    .endif
    .if !defined(NO_CPU_COPTFLAGS)
    . if ${CC} == "icc"
    COPTFLAGS+= ${_ICC_CPUCFLAGS:C/(-x[^M^K^W]+)[MKW]+|-x[MKW]+/\1/}
    . else
    COPTFLAGS+= ${_CPUCFLAGS}
    . endif
    .endif
    .if ${CC} == "icc"
    NOSTDINC= -X
    .else
    NOSTDINC= -nostdinc
    .endif
    
    INCLUDES= ${NOSTDINC} -I- ${INCLMAGIC} -I. -I$S
    
    # This hack lets us use the OpenBSD altq code without spamming a new
    # include path into contrib'ed source files.
    INCLUDES+= -I$S/contrib/altq
    
    # ... and the same for ipfilter
    INCLUDES+= -I$S/contrib/ipfilter
    
    # ... and the same for pf
    INCLUDES+= -I$S/contrib/pf
    
    # ... and the same for Atheros HAL
    INCLUDES+= -I$S/dev/ath
    
    # ... and the same for the NgATM stuff
    INCLUDES+= -I$S/contrib/ngatm
    
    # .. and the same for twa
    INCLUDES+= -I$S/dev/twa
    
    # .. and the same for em
    INCLUDES+= -I$S/dev/em
    
    CFLAGS= ${COPTFLAGS} ${CWARNFLAGS} ${DEBUG}
    CFLAGS+= ${INCLUDES} -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h
    .if ${CC} != "icc"
    CFLAGS+= -fno-common -finline-limit=${INLINE_LIMIT}
    CFLAGS+= --param inline-unit-growth=100
    CFLAGS+= --param large-function-growth=1000
    WERROR?= -Werror
    .endif
    
    # XXX LOCORE means "don't declare C stuff" not "for locore.s".
    ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS}
    
    .if defined(PROFLEVEL) && ${PROFLEVEL} >= 1
    .if ${CC} == "icc"
    .error "Profiling doesn't work with icc yet"
    .endif
    CFLAGS+=        -DGPROF -falign-functions=16
    .if ${PROFLEVEL} >= 2
    CFLAGS+=        -DGPROF4 -DGUPROF
    PROF=   -pg -mprofiler-epilogue
    .else
    PROF=   -pg
    .endif
    .endif
    DEFINED_PROF=   ${PROF}
    
    # Put configuration-specific C flags last (except for ${PROF}) so that they
   # can override the others.
   CFLAGS+=        ${CONF_CFLAGS}
   
   # Optional linting. This can be overridden in /etc/make.conf.
   LINTFLAGS=      ${LINTOBJKERNFLAGS}
   
   NORMAL_C= ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
   NORMAL_S= ${CC} -c ${ASM_CFLAGS} ${WERROR} ${.IMPSRC}
   PROFILE_C= ${CC} -c ${CFLAGS} ${WERROR} ${.IMPSRC}
   NORMAL_C_NOWERROR= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC}
   
   NORMAL_M= ${AWK} -f $S/tools/makeobjops.awk ${.IMPSRC} -c ; \
             ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.PREFIX}.c
   
   NORMAL_LINT=    ${LINT} ${LINTFLAGS} ${CFLAGS:M-[DIU]*} ${.IMPSRC}
   
   GEN_CFILES= $S/$M/$M/genassym.c ${MFILES:T:S/.m$/.c/}
   SYSTEM_CFILES= config.c env.c hints.c vnode_if.c
   SYSTEM_DEP= Makefile ${SYSTEM_OBJS}
   SYSTEM_OBJS= locore.o ${MDOBJS} ${OBJS}
   SYSTEM_OBJS+= ${SYSTEM_CFILES:.c=.o}
   SYSTEM_OBJS+= hack.So
   SYSTEM_LD= @${LD} -Bdynamic -T $S/conf/ldscript.$M \
           -warn-common -export-dynamic -dynamic-linker /red/herring \
           -o ${.TARGET} -X ${SYSTEM_OBJS} vers.o
   SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \
           ${SIZE} ${.TARGET} ; chmod 755 ${.TARGET}
   SYSTEM_DEP+= $S/conf/ldscript.$M
   
   # MKMODULESENV is set here so that port makefiles can augment
   # them.
   
   MKMODULESENV=   MAKEOBJDIRPREFIX=${.OBJDIR}/modules KMODDIR=${KODIR}
   .if (${KERN_IDENT} == LINT)
   MKMODULESENV+=  ALL_MODULES=LINT
   .endif
   .if defined(MODULES_OVERRIDE)
   MKMODULESENV+=  MODULES_OVERRIDE="${MODULES_OVERRIDE}"
   .endif
   .if defined(DEBUG)
   MKMODULESENV+=  DEBUG_FLAGS="${DEBUG}"
   .endif

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