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/10.2/sys/conf/kern.pre.mk 284091 2015-06-06 18:21:16Z ian $
    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?=${MACHINE_ARCH:C/mips(n32|64)?(el)?/mips/:C/arm(v6)?(eb)?/arm/:C/powerpc64/powerpc/}
   11 
   12 # Can be overridden by makeoptions or /etc/make.conf
   13 KERNEL_KO?=     kernel
   14 KERNEL?=        kernel
   15 KODIR?=         /boot/${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 ath
   68 INCLUDES+= -I$S/dev/ath -I$S/dev/ath/ath_hal -I$S/contrib/dev/ath/ath_hal
   69 
   70 # ... and the same for the NgATM stuff
   71 INCLUDES+= -I$S/contrib/ngatm
   72 
   73 # ... and the same for twa
   74 INCLUDES+= -I$S/dev/twa
   75 
   76 # ... and the same for cxgb and cxgbe
   77 INCLUDES+= -I$S/dev/cxgb -I$S/dev/cxgbe
   78 
   79 .endif
   80 
   81 CFLAGS= ${COPTFLAGS} ${C_DIALECT} ${DEBUG} ${CWARNFLAGS}
   82 CFLAGS+= ${INCLUDES} -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h
   83 .if ${COMPILER_TYPE} != "clang"
   84 CFLAGS+= -fno-common -finline-limit=${INLINE_LIMIT}
   85 .if ${MACHINE_CPUARCH} != "mips"
   86 CFLAGS+= --param inline-unit-growth=100
   87 CFLAGS+= --param large-function-growth=1000
   88 .else
   89 # XXX Actually a gross hack just for Octeon because of the Simple Executive.
   90 CFLAGS+= --param inline-unit-growth=10000
   91 CFLAGS+= --param large-function-growth=100000
   92 CFLAGS+= --param max-inline-insns-single=10000
   93 .endif
   94 .endif
   95 WERROR?= -Werror
   96 
   97 # XXX LOCORE means "don't declare C stuff" not "for locore.s".
   98 ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS}
   99 
  100 .if ${COMPILER_TYPE} == "clang"
  101 CLANG_NO_IAS= -no-integrated-as
  102 .else
  103 GCC_MS_EXTENSIONS= -fms-extensions
  104 .endif
  105 
  106 .if defined(PROFLEVEL) && ${PROFLEVEL} >= 1
  107 CFLAGS+=        -DGPROF
  108 .if ${COMPILER_TYPE} != "clang"
  109 CFLAGS+=        -falign-functions=16
  110 .endif
  111 .if ${PROFLEVEL} >= 2
  112 CFLAGS+=        -DGPROF4 -DGUPROF
  113 PROF=           -pg
  114 .if ${COMPILER_TYPE} != "clang"
  115 PROF+=          -mprofiler-epilogue
  116 .endif
  117 .else
  118 PROF=           -pg
  119 .endif
  120 .endif
  121 DEFINED_PROF=   ${PROF}
  122 
  123 # Put configuration-specific C flags last (except for ${PROF}) so that they
  124 # can override the others.
  125 CFLAGS+=        ${CONF_CFLAGS}
  126 
  127 # Optional linting. This can be overridden in /etc/make.conf.
  128 LINTFLAGS=      ${LINTOBJKERNFLAGS}
  129 
  130 NORMAL_C= ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
  131 NORMAL_S= ${CC} -c ${ASM_CFLAGS} ${WERROR} ${.IMPSRC}
  132 PROFILE_C= ${CC} -c ${CFLAGS} ${WERROR} ${.IMPSRC}
  133 NORMAL_C_NOWERROR= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC}
  134 
  135 NORMAL_M= ${AWK} -f $S/tools/makeobjops.awk ${.IMPSRC} -c ; \
  136           ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.PREFIX}.c
  137 
  138 NORMAL_FW= uudecode -o ${.TARGET} ${.ALLSRC}
  139 NORMAL_FWO= ${LD} -b binary --no-warn-mismatch -d -warn-common -r \
  140         -o ${.TARGET} ${.ALLSRC:M*.fw}
  141 
  142 # Special flags for managing the compat compiles for ZFS
  143 ZFS_CFLAGS=     -DFREEBSD_NAMECACHE -DBUILDING_ZFS -nostdinc -I$S/cddl/compat/opensolaris -I$S/cddl/contrib/opensolaris/uts/common/fs/zfs -I$S/cddl/contrib/opensolaris/uts/common/zmod -I$S/cddl/contrib/opensolaris/uts/common -I$S -I$S/cddl/contrib/opensolaris/common/zfs -I$S/cddl/contrib/opensolaris/common ${CFLAGS} -Wno-unknown-pragmas -Wno-missing-prototypes -Wno-undef -Wno-strict-prototypes -Wno-cast-qual -Wno-parentheses -Wno-redundant-decls -Wno-missing-braces -Wno-uninitialized -Wno-unused -Wno-inline -Wno-switch -Wno-pointer-arith -Wno-unknown-pragmas
  144 ZFS_CFLAGS+=    -include $S/cddl/compat/opensolaris/sys/debug_compat.h
  145 ZFS_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${ZFS_CFLAGS}
  146 ZFS_C=          ${CC} -c ${ZFS_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
  147 ZFS_S=          ${CC} -c ${ZFS_ASM_CFLAGS} ${WERROR} ${.IMPSRC}
  148 
  149 .if ${MK_CTF} != "no"
  150 NORMAL_CTFCONVERT=      ${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
  151 .elif ${MAKE_VERSION} >= 5201111300
  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} ${LDFLAGS} --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 MKMODULESENV+=  MODULES_EXTRA="${MODULES_EXTRA}" WITHOUT_MODULES="${WITHOUT_MODULES}"
  186 .if (${KERN_IDENT} == LINT)
  187 MKMODULESENV+=  ALL_MODULES=LINT
  188 .endif
  189 .if defined(MODULES_OVERRIDE)
  190 MKMODULESENV+=  MODULES_OVERRIDE="${MODULES_OVERRIDE}"
  191 .endif
  192 .if defined(DEBUG)
  193 MKMODULESENV+=  DEBUG_FLAGS="${DEBUG}"
  194 .endif
  195 
  196 # Are various things configured?
  197 DDB_ENABLED!=   grep DDB opt_ddb.h || true ; echo
  198 DTR_ENABLED!=   grep KDTRACE_FRAME opt_kdtrace.h || true ; echo
  199 HWPMC_ENABLED!= grep HWPMC opt_hwpmc_hooks.h || true ; echo

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