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 # If a different binutils is installed in /usr/local it probably
   9 # won't recognize LDVER or use the default, creating an incompatibility
  10 # between buildkernel and nativekernel as well as between buildkernel and
  11 # manual make's inside /usr/obj/usr/src/sys/KERNEL_CONFIG.
  12 #
  13 # /usr/local/bin must be removed from the path.
  14 #
  15 RMLDPATH=/usr/local/bin
  16 PATH:=${PATH:C/${RMLDPATH}//g}
  17 .export PATH
  18
  19 fubar:
  20         echo ${PATH}
  21
  22 # build this target if none is specified on the command line
  23 .MAIN:  all
  24
  25 # Set the platform and machine architectures
  26 #
  27 P=      ${MACHINE_PLATFORM}
  28 M=      ${MACHINE_ARCH}
  29
  30 SIZE?=          size
  31 OBJCOPY?=       objcopy
  32
  33 COPTFLAGS?=-O2 -pipe
  34 #COPTFLAGS?=-O -pipe -flto -fno-fat-lto-objects
  35 #COPTFLAGS?=-O -fthread-jumps -fcse-follow-jumps -fcrossjumping -frerun-cse-after-loop -fno-guess-branch-probability --param min-crossjump-insns=1 -pipe
  36 #COPTFLAGS?=-O -fcrossjumping -pipe
  37 #COPTFLAGS?=-Os -fno-strict-aliasing -pipe
  38 #COPTFLAGS?=-O2 -fno-strict-aliasing -pipe
  39 .if !defined(NO_CPU_COPTFLAGS)
  40 COPTFLAGS+= ${_CPUCFLAGS}
  41 .endif
  42 # don't use -I- so we can use proper source-relative locality for local
  43 # includes.
  44 #
  45 # -I.  - this is to access the opt_*.h and use_*.h header files generated
  46 #        in the kernel build directory.
  47 #
  48 # -Iinclude
  49 #       - this is used to access forwarding header files for
  50 #         <machine/*.h> that exist in the cpu architecture but do not
  51 #         exist in the platform (machine/) architecture.  This allows
  52 #         the platform to trivially override the cpu header files.
  53 #
  54 INCLUDES= -nostdinc -I. -Iinclude -I$S
  55 # This hack is to allow kernel compiles to succeed on machines w/out srcdist
  56 .if exists($S/../include)
  57 INCLUDES+= -I$S/../include
  58 .else
  59 INCLUDES+= -I/usr/include
  60 .endif
  61
  62 # This hack lets us use the Intel ACPICA code without spamming a new
  63 # include path into 100+ source files.
  64 .include "$S/conf/acpi.mk"
  65 INCLUDES+= -I${.OBJDIR} -I"$S/${OSACPI_MI_DIR}" -I"$S/${ACPICA_DIR}/include"
  66
  67 # ... and the same for Atheros HAL
  68 INCLUDES+= -I$S/dev/netif/ath/ath_hal -I$S/contrib/dev/ath/ath_hal
  69
  70 # Same thing for drm includes
  71 INCLUDES+= -I$S/dev/drm/include
  72 INCLUDES+= -I$S/dev/drm/include/drm
  73 INCLUDES+= -I$S/dev/drm/include/uapi
  74 INCLUDES+= -I$S/dev/drm/amd/include
  75
  76 COPTS=  ${INCLUDES} ${IDENT} -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h
  77 CFLAGS= ${COPTFLAGS} ${KCFLAGS} ${CWARNFLAGS} ${DEBUG} ${COPTS}
  78
  79 # XXX LOCORE means "don't declare C stuff" not "for locore.s".
  80 ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS:N-flto}
  81
  82 # Put configuration-specific C flags last so that they
  83 # can override the others.
  84 CFLAGS+=        ${CONF_CFLAGS}
  85
  86 # XXX handle this explicitly, fw wrappers use implicit .c.o: rule (LINT64)
  87 .if defined(FASTER_DEPEND)
  88 CFLAGS+= -MD
  89 .endif
  90
  91 NORMAL_C= ${CC} -c ${CFLAGS} ${.IMPSRC}
  92 NORMAL_C_C= ${CC} -c ${CFLAGS} ${.IMPSRC}
  93 NORMAL_S= ${CC} -c ${ASM_CFLAGS} ${.IMPSRC}
  94
  95 NORMAL_M= awk -f $S/tools/makeobjops.awk -- -c $<; \
  96         ${CC} -c ${CFLAGS} ${.PREFIX}.c
  97
  98 NORMAL_FW= uudecode -o ${.TARGET} ${.ALLSRC}
  99 NORMAL_FWO= ${LD} -b binary -d -warn-common -r -o ${.TARGET} ${.ALLSRC:M*.fw}
 100
 101 .if !defined(NO_WERROR) && (${CCVER} == "gcc47" || ${CCVER} == "gcc80")
 102 WERROR=-Werror
 103 .endif
 104
 105 GEN_CFILES= $S/platform/$P/$M/genassym.c
 106 SYSTEM_CFILES= ioconf.c config.c
 107 SYSTEM_SFILES= $S/platform/$P/$M/locore.s
 108 SYSTEM_DEP= Makefile ${SYSTEM_OBJS}
 109 SYSTEM_OBJS= locore.o ${OBJS} ioconf.o config.o hack.So
 110 SYSTEM_LD= @${CC} -nostdlib -ffreestanding -Wl,--hash-style=sysv \
 111         -Wl,-Bdynamic -Wl,-T,$S/platform/$P/conf/ldscript.$M \
 112         -Wl,--export-dynamic -Wl,--dynamic-linker,/red/herring \
 113         -o ${.TARGET} -Wl,-X ${SYSTEM_OBJS} vers.o
 114
 115 # In case of LTO provide all standard CFLAGS!
 116 .if ${CFLAGS:M-flto}
 117 SYSTEM_LD+= ${CFLAGS}
 118 ## This one eats a lot of ram, may be needed to correctly link the kernel.
 119 ## Default "balanced" might create kernel that "Fatal trap 12" on boot!!!
 120 #. if !${CFLAGS:M-flto-partition=*}
 121 #SYSTEM_LD+= -flto-partition=one -flto-report-wpa
 122 #. endif
 123 .endif
 124
 125 # The max-page-size for gnu ld is 0x200000 on x86_64
 126 # For the gold linker, it is only 0x1000 on both x86_64
 127 # The penalty for changing the gold default for x86_64 is larger binaries
 128 # and shared libraries, and forcing them to use more address space than
 129 # required.  The only application that needs such a large page size is the
 130 # kernel itself, so leave the gold default alone and treat the kernel
 131 # page size as an exception.
 132 #
 133 .if ${P} == "pc64"
 134 SYSTEM_LD+= -Wl,-z,max-page-size=0x200000
 135 .endif
 136
 137 SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \
 138         ${SIZE} ${.TARGET} ; chmod 755 ${.TARGET}
 139 SYSTEM_DEP+= $S/platform/$P/conf/ldscript.$M
 140
 141 # Normalize output files to make it absolutely crystal clear to
 142 # anyone examining the build directory.
 143 #
 144 .if defined(DEBUG)
 145 FULLKERNEL=     ${KERNEL}.debug
 146 .if defined(INSTALLSTRIPPED)
 147 SELECTEDKERNEL= ${KERNEL}.stripped
 148 .else
 149 SELECTEDKERNEL= ${KERNEL}.debug
 150 .endif
 151 .else
 152 FULLKERNEL=     ${KERNEL}.nodebug
 153 SELECTEDKERNEL= ${KERNEL}.stripped
 154 .endif
 155
 156
 157 MKMODULESENV=   MAKEOBJDIRPREFIX=${.OBJDIR} BUILDING_WITH_KERNEL=${.OBJDIR}
 158 .if defined(MODULES_OVERRIDE)
 159 MKMODULESENV+=  MODULES_OVERRIDE="${MODULES_OVERRIDE}"
 160 .endif
 161 .if defined(DEBUG)
 162 MKMODULESENV+=  DEBUG="${DEBUG}" DEBUG_FLAGS="${DEBUG}"
 163 .endif
 164 .if defined(INSTALLSTRIPPED) || defined(INSTALLSTRIPPEDMODULES)
 165 MKMODULESENV+=  INSTALLSTRIPPEDMODULES=1
 166 .endif
 167 MKMODULESENV+=  MACHINE_ARCH=${MACHINE_ARCH} MACHINE=${MACHINE} MACHINE_PLATFORM=${MACHINE_PLATFORM}
 168