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?=-O2 -pipe
  20 #COPTFLAGS?=-O -pipe -flto -fno-fat-lto-objects
  21 #COPTFLAGS?=-O -fthread-jumps -fcse-follow-jumps -fcrossjumping -frerun-cse-after-loop -fno-guess-branch-probability --param min-crossjump-insns=1 -pipe
  22 #COPTFLAGS?=-O -fcrossjumping -pipe
  23 #COPTFLAGS?=-Os -fno-strict-aliasing -pipe
  24 #COPTFLAGS?=-O2 -fno-strict-aliasing -pipe
  25 .if !defined(NO_CPU_COPTFLAGS)
  26 COPTFLAGS+= ${_CPUCFLAGS}
  27 .endif
  28 # don't use -I- so we can use proper source-relative locality for local
  29 # includes.
  30 #
  31 # -I.  - this is to access the opt_*.h and use_*.h header files generated
  32 #        in the kernel build directory.
  33 #
  34 # -Iinclude
  35 #       - this is used to access forwarding header files for
  36 #         <machine/*.h> that exist in the cpu architecture but do not
  37 #         exist in the platform (machine/) architecture.  This allows
  38 #         the platform to trivially override the cpu header files.
  39 #
  40 INCLUDES= -nostdinc -I. -Iinclude -I$S
  41 # This hack is to allow kernel compiles to succeed on machines w/out srcdist
  42 .if exists($S/../include)
  43 INCLUDES+= -I$S/../include
  44 .else
  45 INCLUDES+= -I/usr/include
  46 .endif
  47
  48 # For <openssl/headerfile>
  49 #
  50 INCLUDES+= -I$S/../crypto/libressl/include
  51
  52 # This hack lets us use the Intel ACPICA code without spamming a new
  53 # include path into 100+ source files.
  54 .include "$S/conf/acpi.mk"
  55 INCLUDES+= -I${.OBJDIR} -I"$S/${OSACPI_MI_DIR}" -I"$S/${ACPICA_DIR}/include"
  56
  57 # ... and the same for Atheros HAL
  58 INCLUDES+= -I$S/dev/netif/ath/ath_hal -I$S/contrib/dev/ath/ath_hal
  59
  60 # Same thing for drm includes
  61 INCLUDES+= -I$S/dev/drm/include
  62
  63 COPTS=  ${INCLUDES} ${IDENT} -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h
  64 CFLAGS= ${COPTFLAGS} ${KCFLAGS} ${CWARNFLAGS} ${DEBUG} ${COPTS}
  65
  66 # XXX LOCORE means "don't declare C stuff" not "for locore.s".
  67 ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS:N-flto}
  68
  69 DEFINED_PROF=   ${PROF}
  70 .if defined(PROF)
  71 CFLAGS+=        -falign-functions=16
  72 .if ${PROFLEVEL} >= 2
  73 IDENT+= -DGPROF4 -DGUPROF
  74 PROF+=  -mprofiler-epilogue
  75 .endif
  76 .endif
  77
  78 # Put configuration-specific C flags last (except for ${PROF}) so that they
  79 # can override the others.
  80 CFLAGS+=        ${CONF_CFLAGS}
  81
  82 NORMAL_C= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC}
  83 NORMAL_C_C= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC}
  84 NORMAL_S= ${CC} -c ${ASM_CFLAGS} ${.IMPSRC}
  85 PROFILE_C= ${CC} -c ${CFLAGS} ${.IMPSRC}
  86
  87 NORMAL_M= awk -f $S/tools/makeobjops.awk -- -c $<; \
  88         ${CC} -c ${CFLAGS} ${PROF} ${.PREFIX}.c
  89
  90 NORMAL_FW= uudecode -o ${.TARGET} ${.ALLSRC}
  91 NORMAL_FWO= ${LD} -b binary -d -warn-common -r -o ${.TARGET} ${.ALLSRC:M*.fw}
  92
  93 .if !defined(NO_WERROR) && (${CCVER} == "gcc47" || ${CCVER} == "gcc50")
  94 WERROR=-Werror
  95 .endif
  96
  97 GEN_CFILES= $S/platform/$P/$M/genassym.c
  98 SYSTEM_CFILES= ioconf.c config.c
  99 SYSTEM_SFILES= $S/platform/$P/$M/locore.s
 100 SYSTEM_DEP= Makefile ${SYSTEM_OBJS}
 101 SYSTEM_OBJS= locore.o ${OBJS} ioconf.o config.o hack.So
 102 SYSTEM_LD= @${CC} -nostdlib -ffreestanding -Wl,--hash-style=sysv \
 103         -Wl,-Bdynamic -Wl,-T,$S/platform/$P/conf/ldscript.$M \
 104         -Wl,--export-dynamic -Wl,--dynamic-linker,/red/herring \
 105         -o ${.TARGET} -Wl,-X ${SYSTEM_OBJS} vers.o
 106
 107 # In case of LTO provide all standard CFLAGS!
 108 .if ${CFLAGS:M-flto}
 109 SYSTEM_LD+= ${CFLAGS}
 110 # XXX this one eats a lot of ram, but needed to correctly link the kernel.
 111 # Default "balanced" might create kernel that "Fatal trap 12" on boot!!!
 112 . if !${CFLAGS:M-flto-partition=*}
 113 SYSTEM_LD+= -flto-partition=one -flto-report-wpa
 114 . endif
 115 .endif
 116
 117 # The max-page-size for gnu ld is 0x200000 on x86_64
 118 # For the gold linker, it is only 0x1000 on both x86_64 and i386
 119 # The penalty for changing the gold default for x86_64 is larger binaries
 120 # and shared libraries, and forcing them to use more address space than
 121 # required.  The only application that needs such a large page size is the
 122 # kernel itself, so leave the gold default alone and treat the kernel
 123 # page size as an exception.
 124 #
 125 .if ${P} == "pc64"
 126 SYSTEM_LD+= -Wl,-z,max-page-size=0x200000
 127 .endif
 128
 129 SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \
 130         ${SIZE} ${.TARGET} ; chmod 755 ${.TARGET}
 131 SYSTEM_DEP+= $S/platform/$P/conf/ldscript.$M
 132
 133 # Normalize output files to make it absolutely crystal clear to
 134 # anyone examining the build directory.
 135 #
 136 .if defined(DEBUG)
 137 FULLKERNEL=     ${KERNEL}.debug
 138 .if defined(INSTALLSTRIPPED)
 139 SELECTEDKERNEL= ${KERNEL}.stripped
 140 .else
 141 SELECTEDKERNEL= ${KERNEL}.debug
 142 .endif
 143 .else
 144 FULLKERNEL=     ${KERNEL}.nodebug
 145 SELECTEDKERNEL= ${KERNEL}.stripped
 146 .endif
 147
 148
 149 MKMODULESENV=   MAKEOBJDIRPREFIX=${.OBJDIR} BUILDING_WITH_KERNEL=${.OBJDIR}
 150 .if defined(MODULES_OVERRIDE)
 151 MKMODULESENV+=  MODULES_OVERRIDE="${MODULES_OVERRIDE}"
 152 .endif
 153 .if defined(DEBUG)
 154 MKMODULESENV+=  DEBUG="${DEBUG}" DEBUG_FLAGS="${DEBUG}"
 155 .endif
 156 .if defined(INSTALLSTRIPPED) || defined(INSTALLSTRIPPEDMODULES)
 157 MKMODULESENV+=  INSTALLSTRIPPEDMODULES=1
 158 .endif
 159 MKMODULESENV+=  MACHINE_ARCH=${MACHINE_ARCH} MACHINE=${MACHINE} MACHINE_PLATFORM=${MACHINE_PLATFORM}
 160