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 -I$S/dev/drm/include/uapi
  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 # Put configuration-specific C flags last so that they
  70 # can override the others.
  71 CFLAGS+=        ${CONF_CFLAGS}
  72
  73 # XXX handle this explicitly, fw wrappers use implicit .c.o: rule (LINT64)
  74 .if defined(FASTER_DEPEND)
  75 CFLAGS+= -MD
  76 .endif
  77
  78 NORMAL_C= ${CC} -c ${CFLAGS} ${.IMPSRC}
  79 NORMAL_C_C= ${CC} -c ${CFLAGS} ${.IMPSRC}
  80 NORMAL_S= ${CC} -c ${ASM_CFLAGS} ${.IMPSRC}
  81
  82 NORMAL_M= awk -f $S/tools/makeobjops.awk -- -c $<; \
  83         ${CC} -c ${CFLAGS} ${.PREFIX}.c
  84
  85 NORMAL_FW= uudecode -o ${.TARGET} ${.ALLSRC}
  86 NORMAL_FWO= ${LD} -b binary -d -warn-common -r -o ${.TARGET} ${.ALLSRC:M*.fw}
  87
  88 .if !defined(NO_WERROR) && (${CCVER} == "gcc47" || ${CCVER} == "gcc50" || ${CCVER} == "gcc80")
  89 WERROR=-Werror
  90 .endif
  91
  92 GEN_CFILES= $S/platform/$P/$M/genassym.c
  93 SYSTEM_CFILES= ioconf.c config.c
  94 SYSTEM_SFILES= $S/platform/$P/$M/locore.s
  95 SYSTEM_DEP= Makefile ${SYSTEM_OBJS}
  96 SYSTEM_OBJS= locore.o ${OBJS} ioconf.o config.o hack.So
  97 SYSTEM_LD= @${CC} -nostdlib -ffreestanding -Wl,--hash-style=sysv \
  98         -Wl,-Bdynamic -Wl,-T,$S/platform/$P/conf/ldscript.$M \
  99         -Wl,--export-dynamic -Wl,--dynamic-linker,/red/herring \
 100         -o ${.TARGET} -Wl,-X ${SYSTEM_OBJS} vers.o
 101
 102 # In case of LTO provide all standard CFLAGS!
 103 .if ${CFLAGS:M-flto}
 104 SYSTEM_LD+= ${CFLAGS}
 105 ## This one eats a lot of ram, may be needed to correctly link the kernel.
 106 ## Default "balanced" might create kernel that "Fatal trap 12" on boot!!!
 107 #. if !${CFLAGS:M-flto-partition=*}
 108 #SYSTEM_LD+= -flto-partition=one -flto-report-wpa
 109 #. endif
 110 .endif
 111
 112 # The max-page-size for gnu ld is 0x200000 on x86_64
 113 # For the gold linker, it is only 0x1000 on both x86_64
 114 # The penalty for changing the gold default for x86_64 is larger binaries
 115 # and shared libraries, and forcing them to use more address space than
 116 # required.  The only application that needs such a large page size is the
 117 # kernel itself, so leave the gold default alone and treat the kernel
 118 # page size as an exception.
 119 #
 120 .if ${P} == "pc64"
 121 SYSTEM_LD+= -Wl,-z,max-page-size=0x200000
 122 .endif
 123
 124 SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \
 125         ${SIZE} ${.TARGET} ; chmod 755 ${.TARGET}
 126 SYSTEM_DEP+= $S/platform/$P/conf/ldscript.$M
 127
 128 # Normalize output files to make it absolutely crystal clear to
 129 # anyone examining the build directory.
 130 #
 131 .if defined(DEBUG)
 132 FULLKERNEL=     ${KERNEL}.debug
 133 .if defined(INSTALLSTRIPPED)
 134 SELECTEDKERNEL= ${KERNEL}.stripped
 135 .else
 136 SELECTEDKERNEL= ${KERNEL}.debug
 137 .endif
 138 .else
 139 FULLKERNEL=     ${KERNEL}.nodebug
 140 SELECTEDKERNEL= ${KERNEL}.stripped
 141 .endif
 142
 143
 144 MKMODULESENV=   MAKEOBJDIRPREFIX=${.OBJDIR} BUILDING_WITH_KERNEL=${.OBJDIR}
 145 .if defined(MODULES_OVERRIDE)
 146 MKMODULESENV+=  MODULES_OVERRIDE="${MODULES_OVERRIDE}"
 147 .endif
 148 .if defined(DEBUG)
 149 MKMODULESENV+=  DEBUG="${DEBUG}" DEBUG_FLAGS="${DEBUG}"
 150 .endif
 151 .if defined(INSTALLSTRIPPED) || defined(INSTALLSTRIPPEDMODULES)
 152 MKMODULESENV+=  INSTALLSTRIPPEDMODULES=1
 153 .endif
 154 MKMODULESENV+=  MACHINE_ARCH=${MACHINE_ARCH} MACHINE=${MACHINE} MACHINE_PLATFORM=${MACHINE_PLATFORM}
 155