sys/conf/kern.pre.mk

   1 # $FreeBSD$
   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 # Allow user to configure things that only effect src tree builds.
   7 # Note: This is duplicated from src.sys.mk to ensure that we include
   8 # /etc/src.conf when building the kernel. Kernels can be built without
   9 # the rest of /usr/src, but they still always process SRCCONF even though
  10 # the normal mechanisms to prevent that (compiling out of tree) won't
  11 # work. To ensure they do work, we have to duplicate thee few lines here.
  12 SRCCONF?=       /etc/src.conf
  13 .if (exists(${SRCCONF}) || ${SRCCONF} != "/etc/src.conf") && !target(_srcconf_included_)
  14 .include "${SRCCONF}"
  15 _srcconf_included_:
  16 .endif
  17
  18 .include <bsd.own.mk>
  19 .include <bsd.compiler.mk>
  20 .include "kern.opts.mk"
  21
  22 # The kernel build always occurs in the object directory which is .CURDIR.
  23 .if ${.MAKE.MODE:Unormal:Mmeta}
  24 .MAKE.MODE+=    curdirOk=yes
  25 .endif
  26
  27 # The kernel build always expects .OBJDIR=.CURDIR.
  28 .OBJDIR: ${.CURDIR}
  29
  30 .if defined(NO_OBJWALK) || ${MK_AUTO_OBJ} == "yes"
  31 NO_OBJWALK=             t
  32 NO_MODULES_OBJ= t
  33 .endif
  34 .if !defined(NO_OBJWALK)
  35 _obj=           obj
  36 .endif
  37
  38 # Can be overridden by makeoptions or /etc/make.conf
  39 KERNEL_KO?=     kernel
  40 KERNEL?=        kernel
  41 KODIR?=         /boot/${KERNEL}
  42 LDSCRIPT_NAME?= ldscript.$M
  43 LDSCRIPT?=      $S/conf/${LDSCRIPT_NAME}
  44
  45 M=              ${MACHINE}
  46
  47 AWK?=           awk
  48 CP?=            cp
  49 NM?=            nm
  50 OBJCOPY?=       objcopy
  51 SIZE?=          size
  52
  53 .if defined(DEBUG)
  54 _MINUS_O=       -O
  55 CTFFLAGS+=      -g
  56 .else
  57 .if ${MACHINE_CPUARCH} == "powerpc"
  58 _MINUS_O=       -O      # gcc miscompiles some code at -O2
  59 .else
  60 _MINUS_O=       -O2
  61 .endif
  62 .endif
  63 .if ${MACHINE_CPUARCH} == "amd64"
  64 .if ${COMPILER_TYPE} == "clang"
  65 COPTFLAGS?=-O2 -pipe
  66 .else
  67 COPTFLAGS?=-O2 -frename-registers -pipe
  68 .endif
  69 .else
  70 COPTFLAGS?=${_MINUS_O} -pipe
  71 .endif
  72 .if !empty(COPTFLAGS:M-O[23s]) && empty(COPTFLAGS:M-fno-strict-aliasing)
  73 COPTFLAGS+= -fno-strict-aliasing
  74 .endif
  75 .if !defined(NO_CPU_COPTFLAGS)
  76 COPTFLAGS+= ${_CPUCFLAGS}
  77 .endif
  78 NOSTDINC= -nostdinc
  79
  80 INCLUDES= ${NOSTDINC} ${INCLMAGIC} -I. -I$S -I$S/contrib/ck/include
  81
  82 CFLAGS= ${COPTFLAGS} ${DEBUG}
  83 CFLAGS+= ${INCLUDES} -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h
  84 CFLAGS_PARAM_INLINE_UNIT_GROWTH?=100
  85 CFLAGS_PARAM_LARGE_FUNCTION_GROWTH?=1000
  86 .if ${MACHINE_CPUARCH} == "mips"
  87 CFLAGS_ARCH_PARAMS?=--param max-inline-insns-single=1000 -DMACHINE_ARCH='"${MACHINE_ARCH}"'
  88 .endif
  89 CFLAGS.gcc+= -fno-common -fms-extensions -finline-limit=${INLINE_LIMIT}
  90 CFLAGS.gcc+= --param inline-unit-growth=${CFLAGS_PARAM_INLINE_UNIT_GROWTH}
  91 CFLAGS.gcc+= --param large-function-growth=${CFLAGS_PARAM_LARGE_FUNCTION_GROWTH}
  92 CFLAGS.gcc+= -fms-extensions
  93 .if defined(CFLAGS_ARCH_PARAMS)
  94 CFLAGS.gcc+=${CFLAGS_ARCH_PARAMS}
  95 .endif
  96 WERROR?= -Werror
  97
  98 # XXX LOCORE means "don't declare C stuff" not "for locore.s".
  99 ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS} ${ASM_CFLAGS.${.IMPSRC:T}}
 100
 101 .if defined(PROFLEVEL) && ${PROFLEVEL} >= 1
 102 CFLAGS+=        -DGPROF
 103 CFLAGS.gcc+=    -falign-functions=16
 104 .if ${PROFLEVEL} >= 2
 105 CFLAGS+=        -DGPROF4 -DGUPROF
 106 PROF=           -pg
 107 .if ${COMPILER_TYPE} == "gcc"
 108 PROF+=          -mprofiler-epilogue
 109 .endif
 110 .else
 111 PROF=           -pg
 112 .endif
 113 .endif
 114 DEFINED_PROF=   ${PROF}
 115
 116 # Put configuration-specific C flags last (except for ${PROF}) so that they
 117 # can override the others.
 118 CFLAGS+=        ${CONF_CFLAGS}
 119
 120 .if defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mbuild-id}
 121 LDFLAGS+=       -Wl,--build-id=sha1
 122 .endif
 123
 124 .if ${MACHINE_CPUARCH} == "amd64"
 125 .if defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mifunc} == ""
 126 .error amd64 kernel requires linker ifunc support
 127 .endif
 128 LDFLAGS+=       -Wl,-z max-page-size=2097152 -Wl,-z common-page-size=4096
 129 .endif
 130
 131 NORMAL_C= ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
 132 NORMAL_S= ${CC:N${CCACHE_BIN}} -c ${ASM_CFLAGS} ${WERROR} ${.IMPSRC}
 133 PROFILE_C= ${CC} -c ${CFLAGS} ${WERROR} ${.IMPSRC}
 134 NORMAL_C_NOWERROR= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC}
 135
 136 NORMAL_M= ${AWK} -f $S/tools/makeobjops.awk ${.IMPSRC} -c ; \
 137           ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.PREFIX}.c
 138
 139 NORMAL_FW= uudecode -o ${.TARGET} ${.ALLSRC}
 140 NORMAL_FWO= ${LD} -b binary --no-warn-mismatch -d -warn-common -r \
 141         -m ${LD_EMULATION} -o ${.TARGET} ${.ALLSRC:M*.fw}
 142
 143 # for ZSTD in the kernel (include zstd/lib/freebsd before other CFLAGS)
 144 ZSTD_C= ${CC} -c -DZSTD_HEAPMODE=1 -I$S/contrib/zstd/lib/freebsd ${CFLAGS} -I$S/contrib/zstd/lib -I$S/contrib/zstd/lib/common ${WERROR} -Wno-inline -Wno-missing-prototypes ${PROF} -U__BMI__ ${.IMPSRC}
 145
 146 # Common for dtrace / zfs
 147 CDDL_CFLAGS=    -DFREEBSD_NAMECACHE -nostdinc -I$S/cddl/compat/opensolaris -I$S/cddl/contrib/opensolaris/uts/common -I$S -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
 148 CDDL_CFLAGS+=   -include $S/cddl/compat/opensolaris/sys/debug_compat.h
 149 CDDL_C=         ${CC} -c ${CDDL_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
 150
 151 # Special flags for managing the compat compiles for ZFS
 152 ZFS_CFLAGS=     -DBUILDING_ZFS -I$S/cddl/contrib/opensolaris/uts/common/fs/zfs
 153 ZFS_CFLAGS+=    -I$S/cddl/contrib/opensolaris/uts/common/fs/zfs/lua
 154 ZFS_CFLAGS+=    -I$S/cddl/contrib/opensolaris/uts/common/zmod
 155 ZFS_CFLAGS+=    -I$S/cddl/contrib/opensolaris/common/zfs
 156 ZFS_CFLAGS+=    ${CDDL_CFLAGS}
 157 ZFS_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${ZFS_CFLAGS}
 158 ZFS_C=          ${CC} -c ${ZFS_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
 159 ZFS_S=          ${CC} -c ${ZFS_ASM_CFLAGS} ${WERROR} ${.IMPSRC}
 160
 161 # Special flags for managing the compat compiles for DTrace
 162 DTRACE_CFLAGS=  -DBUILDING_DTRACE ${CDDL_CFLAGS} -I$S/cddl/dev/dtrace -I$S/cddl/dev/dtrace/${MACHINE_CPUARCH}
 163 .if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386"
 164 DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/intel -I$S/cddl/dev/dtrace/x86
 165 .endif
 166 DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/common/util -I$S -DDIS_MEM -DSMP
 167 DTRACE_ASM_CFLAGS=      -x assembler-with-cpp -DLOCORE ${DTRACE_CFLAGS}
 168 DTRACE_C=       ${CC} -c ${DTRACE_CFLAGS}       ${WERROR} ${PROF} ${.IMPSRC}
 169 DTRACE_S=       ${CC} -c ${DTRACE_ASM_CFLAGS}   ${WERROR} ${.IMPSRC}
 170
 171 # Special flags for managing the compat compiles for DTrace/FBT
 172 FBT_CFLAGS=     -DBUILDING_DTRACE -nostdinc -I$S/cddl/dev/fbt/${MACHINE_CPUARCH} -I$S/cddl/dev/fbt -I$S/cddl/compat/opensolaris -I$S/cddl/contrib/opensolaris/uts/common -I$S ${CDDL_CFLAGS}
 173 .if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386"
 174 FBT_CFLAGS+=    -I$S/cddl/dev/fbt/x86
 175 .endif
 176 FBT_C=          ${CC} -c ${FBT_CFLAGS}          ${WERROR} ${PROF} ${.IMPSRC}
 177
 178 .if ${MK_CTF} != "no"
 179 NORMAL_CTFCONVERT=      ${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
 180 .elif ${MAKE_VERSION} >= 5201111300
 181 NORMAL_CTFCONVERT=
 182 .else
 183 NORMAL_CTFCONVERT=      @:
 184 .endif
 185
 186 # Linux Kernel Programming Interface C-flags
 187 LINUXKPI_INCLUDES=      -I$S/compat/linuxkpi/common/include
 188 LINUXKPI_C=             ${NORMAL_C} ${LINUXKPI_INCLUDES}
 189
 190 # Infiniband C flags.  Correct include paths and omit errors that linux
 191 # does not honor.
 192 OFEDINCLUDES=   -I$S/ofed/include -I$S/ofed/include/uapi ${LINUXKPI_INCLUDES}
 193 OFEDNOERR=      -Wno-cast-qual -Wno-pointer-arith
 194 OFEDCFLAGS=     ${CFLAGS:N-I*} -DCONFIG_INFINIBAND_USER_MEM \
 195                 ${OFEDINCLUDES} ${CFLAGS:M-I*} ${OFEDNOERR}
 196 OFED_C_NOIMP=   ${CC} -c -o ${.TARGET} ${OFEDCFLAGS} ${WERROR} ${PROF}
 197 OFED_C=         ${OFED_C_NOIMP} ${.IMPSRC}
 198
 199 GEN_CFILES= $S/$M/$M/genassym.c ${MFILES:T:S/.m$/.c/}
 200 SYSTEM_CFILES= config.c env.c hints.c vnode_if.c
 201 SYSTEM_DEP= Makefile ${SYSTEM_OBJS}
 202 SYSTEM_OBJS= locore.o ${MDOBJS} ${OBJS}
 203 SYSTEM_OBJS+= ${SYSTEM_CFILES:.c=.o}
 204 SYSTEM_OBJS+= hack.pico
 205
 206 MD_ROOT_SIZE_CONFIGURED!=       grep MD_ROOT_SIZE opt_md.h || true ; echo
 207 .if ${MFS_IMAGE:Uno} != "no"
 208 .if empty(MD_ROOT_SIZE_CONFIGURED)
 209 SYSTEM_OBJS+= embedfs_${MFS_IMAGE:T:R}.o
 210 .endif
 211 .endif
 212 SYSTEM_LD= @${LD} -m ${LD_EMULATION} -Bdynamic -T ${LDSCRIPT} ${_LDFLAGS} \
 213         --no-warn-mismatch --warn-common --export-dynamic \
 214         --dynamic-linker /red/herring \
 215         -o ${.TARGET} -X ${SYSTEM_OBJS} vers.o
 216 SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \
 217         ${SIZE} ${.TARGET} ; chmod 755 ${.TARGET}
 218 SYSTEM_DEP+= ${LDSCRIPT}
 219
 220 # Calculate path for .m files early, if needed.
 221 .if !defined(NO_MODULES) && !defined(__MPATH) && !make(install) && \
 222     (empty(.MAKEFLAGS:M-V) || defined(NO_SKIP_MPATH))
 223 __MPATH!=find ${S:tA}/ -name \*_if.m
 224 .endif
 225
 226 # MKMODULESENV is set here so that port makefiles can augment
 227 # them.
 228
 229 MKMODULESENV+=  MAKEOBJDIRPREFIX=${.OBJDIR}/modules KMODDIR=${KODIR}
 230 MKMODULESENV+=  MACHINE_CPUARCH=${MACHINE_CPUARCH}
 231 MKMODULESENV+=  MACHINE=${MACHINE} MACHINE_ARCH=${MACHINE_ARCH}
 232 MKMODULESENV+=  MODULES_EXTRA="${MODULES_EXTRA}" WITHOUT_MODULES="${WITHOUT_MODULES}"
 233 MKMODULESENV+=  ARCH_FLAGS="${ARCH_FLAGS}"
 234 .if (${KERN_IDENT} == LINT)
 235 MKMODULESENV+=  ALL_MODULES=LINT
 236 .endif
 237 .if defined(MODULES_OVERRIDE)
 238 MKMODULESENV+=  MODULES_OVERRIDE="${MODULES_OVERRIDE}"
 239 .endif
 240 .if defined(DEBUG)
 241 MKMODULESENV+=  DEBUG_FLAGS="${DEBUG}"
 242 .endif
 243 .if !defined(NO_MODULES)
 244 MKMODULESENV+=  __MPATH="${__MPATH}"
 245 .endif
 246
 247 # Architecture and output format arguments for objcopy to convert image to
 248 # object file
 249
 250 .if ${MFS_IMAGE:Uno} != "no"
 251 .if empty(MD_ROOT_SIZE_CONFIGURED)
 252 .if !defined(EMBEDFS_FORMAT.${MACHINE_ARCH})
 253 EMBEDFS_FORMAT.${MACHINE_ARCH}!= awk -F'"' '/OUTPUT_FORMAT/ {print $$2}' ${LDSCRIPT}
 254 .if empty(EMBEDFS_FORMAT.${MACHINE_ARCH})
 255 .undef EMBEDFS_FORMAT.${MACHINE_ARCH}
 256 .endif
 257 .endif
 258
 259 .if !defined(EMBEDFS_ARCH.${MACHINE_ARCH})
 260 EMBEDFS_ARCH.${MACHINE_ARCH}!= sed -n '/OUTPUT_ARCH/s/.*(\(.*\)).*/\1/p' ${LDSCRIPT}
 261 .if empty(EMBEDFS_ARCH.${MACHINE_ARCH})
 262 .undef EMBEDFS_ARCH.${MACHINE_ARCH}
 263 .endif
 264 .endif
 265
 266 EMBEDFS_FORMAT.arm?=            elf32-littlearm
 267 EMBEDFS_FORMAT.armv6?=          elf32-littlearm
 268 EMBEDFS_FORMAT.armv7?=          elf32-littlearm
 269 EMBEDFS_FORMAT.aarch64?=        elf64-littleaarch64
 270 EMBEDFS_FORMAT.mips?=           elf32-tradbigmips
 271 EMBEDFS_FORMAT.mipsel?=         elf32-tradlittlemips
 272 EMBEDFS_FORMAT.mips64?=         elf64-tradbigmips
 273 EMBEDFS_FORMAT.mips64el?=       elf64-tradlittlemips
 274 EMBEDFS_FORMAT.riscv?=          elf64-littleriscv
 275 .endif
 276 .endif
 277
 278 # Detect kernel config options that force stack frames to be turned on.
 279 DDB_ENABLED!=   grep DDB opt_ddb.h || true ; echo
 280 DTR_ENABLED!=   grep KDTRACE_FRAME opt_kdtrace.h || true ; echo
 281 HWPMC_ENABLED!= grep HWPMC opt_hwpmc_hooks.h || true ; echo