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

     # $FreeBSD: releng/5.2/sys/conf/kern.pre.mk 122116 2003-11-05 12:20:16Z bde $
     
     # 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
    
    COPTFLAGS?=-O -pipe
    .if !defined(NO_CPU_COPTFLAGS)
    COPTFLAGS+= ${_CPUCFLAGS}
    .endif
    INCLUDES= -nostdinc -I- ${INCLMAGIC} -I. -I$S
    
    # This hack lets us use the Intel ACPICA code without spamming a new 
    # include path into 100+ source files.
    INCLUDES+= -I$S/contrib/dev/acpica
    
    # ... and the same for ipfilter
    INCLUDES+= -I$S/contrib/ipfilter
    
    # ... and the same for Atheros HAL
    INCLUDES+= -I$S/contrib/dev/ath -I$S/contrib/dev/ath/freebsd
    
    # ... and the same for the NgATM stuff
    INCLUDES+= -I$S/contrib/ngatm
    
    COPTS=  ${INCLUDES} -D_KERNEL -include opt_global.h
    CFLAGS= ${COPTFLAGS} ${CWARNFLAGS} ${DEBUG} ${COPTS}
    CFLAGS+= -fno-common -finline-limit=${INLINE_LIMIT} -fno-strict-aliasing
    WERROR?= -Werror
    
    # 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
    CFLAGS+=        -DGPROF -falign-functions=16
    .if ${PROFLEVEL} >= 2
    CFLAGS+=        -DGPROF4 -DGUPROF
    # XXX -Wno-inline is to break some warnings.
    PROF=   -finstrument-functions -Wno-inline
    .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
    SYSTEM_CFILES= config.c env.c hints.c majors.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} ${FMT} -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} ${FMT} ${.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="${DEBUG}" DEBUG_FLAGS="${DEBUG}"
   .endif

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