sys/conf/kern.pre.mk

   1 #
   2 # This Makefile covers the top part of the MI kernel build instructions
   3 #
   4
   5 # Can be overridden by makeoptions or /etc/make.conf
   6 KERNEL?=        kernel
   7
   8 # build this target if none is specified on the command line
   9 .MAIN:  all
  10
  11 # Set the platform and machine architectures
  12 #
  13 P=      ${MACHINE_PLATFORM}
  14 M=      ${MACHINE_ARCH}
  15
  16 SIZE?=          size
  17 OBJCOPY?=       objcopy
  18
  19 COPTFLAGS?=-O -pipe
  20 #COPTFLAGS?=-O -fthread-jumps -fcse-follow-jumps -fcrossjumping -frerun-cse-after-loop -fno-guess-branch-probability --param min-crossjump-insns=1 -pipe
  21 #COPTFLAGS?=-O -fcrossjumping -pipe
  22 #COPTFLAGS?=-Os -fno-strict-aliasing -pipe
  23 #COPTFLAGS?=-O2 -fno-strict-aliasing -pipe
  24 .if !defined(NO_CPU_COPTFLAGS)
  25 COPTFLAGS+= ${_CPUCFLAGS}
  26 .endif
  27 # don't use -I- so we can use proper source-relative locality for local
  28 # includes.
  29 #
  30 # -I.  - this is to access the opt_*.h and use_*.h header files generated
  31 #        in the kernel build directory.
  32 #
  33 # -Iinclude
  34 #       - this is used to access forwarding header files for
  35 #         <machine/*.h> that exist in the cpu architecture but do not
  36 #         exist in the platform (machine/) architecture.  This allows
  37 #         the platform to trivially override the cpu header files.
  38 #
  39 INCLUDES= -nostdinc -I. -Iinclude -I$S
  40 # This hack is to allow kernel compiles to succeed on machines w/out srcdist
  41 .if exists($S/../include)
  42 INCLUDES+= -I$S/../include
  43 .else
  44 INCLUDES+= -I/usr/include
  45 .endif
  46
  47 # This hack lets us use the Intel ACPICA code without spamming a new
  48 # include path into 100+ source files.
  49 .include "$S/conf/acpi.mk"
  50 INCLUDES+= -I${.OBJDIR} -I"$S/${OSACPI_MI_DIR}" -I"$S/${ACPICA_DIR}/include"
  51
  52 # ... and the same for Atheros HAL
  53 INCLUDES+= -I$S/dev/netif/ath/hal -I$S/dev/netif/ath/hal/ath_hal
  54
  55 COPTS=  ${INCLUDES} ${IDENT} -D_KERNEL -include opt_global.h
  56 CFLAGS= ${COPTFLAGS} ${CWARNFLAGS} ${DEBUG} ${COPTS}
  57
  58 # XXX LOCORE means "don't declare C stuff" not "for locore.s".
  59 ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS}
  60
  61 DEFINED_PROF=   ${PROF}
  62 .if defined(PROF)
  63 CFLAGS+=        -falign-functions=16
  64 .if ${PROFLEVEL} >= 2
  65 IDENT+= -DGPROF4 -DGUPROF
  66 PROF+=  -mprofiler-epilogue
  67 .endif
  68 .endif
  69
  70 # Put configuration-specific C flags last (except for ${PROF}) so that they
  71 # can override the others.
  72 CFLAGS+=        ${CONF_CFLAGS}
  73
  74 NORMAL_C= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC}
  75 NORMAL_C_C= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC}
  76 NORMAL_S= ${CC} -c ${ASM_CFLAGS} ${.IMPSRC}
  77 PROFILE_C= ${CC} -c ${CFLAGS} ${.IMPSRC}
  78
  79 NORMAL_M= awk -f $S/tools/makeobjops.awk -- -c $<; \
  80         ${CC} -c ${CFLAGS} ${PROF} ${.PREFIX}.c
  81
  82 .if !defined(NO_WERROR) && (${CCVER} == "gcc41" || ${CCVER} == "gcc44")
  83 WERROR=-Werror
  84 .endif
  85
  86 GEN_CFILES= $S/platform/$P/$M/genassym.c
  87 SYSTEM_CFILES= ioconf.c config.c
  88 SYSTEM_SFILES= $S/platform/$P/$M/locore.s
  89 SYSTEM_DEP= Makefile ${SYSTEM_OBJS}
  90 SYSTEM_OBJS= locore.o ${OBJS} ioconf.o config.o hack.So
  91 SYSTEM_LD= @${LD} -Bdynamic -T $S/platform/$P/conf/ldscript.$M \
  92         -export-dynamic -dynamic-linker /red/herring \
  93         -o ${.TARGET} -X ${SYSTEM_OBJS} vers.o
  94
  95 # The max-page-size for gnu ld is 0x200000 on x86_64
  96 # For the gold linker, it is only 0x1000 on both x86_64 and i386
  97 # The penalty for changing the gold default for x86_64 is larger binaries
  98 # and shared libraries, and forcing them to use more address space than
  99 # required.  The only application that needs such a large page size is the
 100 # kernel itself, so leave the gold default alone and treat the kernel
 101 # page size as an exception.
 102 #
 103 .if ${P} == "pc64" || ${P} == "vkernel64"
 104 SYSTEM_LD+= -z max-page-size=0x200000
 105 .elif ${P} == "pc32" || ${P} == "vkernel"
 106 SYSTEM_LD+= -z max-page-size=0x1000
 107 .endif
 108
 109 SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \
 110         ${SIZE} ${.TARGET} ; chmod 755 ${.TARGET}
 111 SYSTEM_DEP+= $S/platform/$P/conf/ldscript.$M
 112
 113 # Normalize output files to make it absolutely crystal clear to
 114 # anyone examining the build directory.
 115 #
 116 .if defined(DEBUG)
 117 FULLKERNEL=     ${KERNEL}.debug
 118 .if defined(INSTALLSTRIPPED)
 119 SELECTEDKERNEL= ${KERNEL}.stripped
 120 .else
 121 SELECTEDKERNEL= ${KERNEL}.debug
 122 .endif
 123 .else
 124 FULLKERNEL=     ${KERNEL}.nodebug
 125 SELECTEDKERNEL= ${KERNEL}.stripped
 126 .endif
 127
 128
 129 MKMODULESENV=   MAKEOBJDIRPREFIX=${.OBJDIR} BUILDING_WITH_KERNEL=${.OBJDIR}
 130 .if defined(MODULES_OVERRIDE)
 131 MKMODULESENV+=  MODULES_OVERRIDE="${MODULES_OVERRIDE}"
 132 .endif
 133 .if defined(DEBUG)
 134 MKMODULESENV+=  DEBUG="${DEBUG}" DEBUG_FLAGS="${DEBUG}"
 135 .endif
 136 .if defined(INSTALLSTRIPPED) || defined(INSTALLSTRIPPEDMODULES)
 137 MKMODULESENV+=  INSTALLSTRIPPEDMODULES=1
 138 .endif
 139 MKMODULESENV+=  MACHINE_ARCH=${MACHINE_ARCH} MACHINE=${MACHINE} MACHINE_PLATFORM=${MACHINE_PLATFORM}
 140