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 KUBSAN_ENABLED!=        grep KUBSAN opt_global.h || true ; echo
 117 .if !empty(KUBSAN_ENABLED)
 118 SAN_CFLAGS+=    -fsanitize=undefined
 119 .endif
 120
 121 COVERAGE_ENABLED!=      grep COVERAGE opt_global.h || true ; echo
 122 .if !empty(COVERAGE_ENABLED)
 123 .if ${COMPILER_TYPE} == "clang" || \
 124     (${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} >= 80100)
 125 SAN_CFLAGS+=    -fsanitize-coverage=trace-pc,trace-cmp
 126 .else
 127 SAN_CFLAGS+=    -fsanitize-coverage=trace-pc
 128 .endif
 129 .endif
 130
 131 CFLAGS+=        ${SAN_CFLAGS}
 132
 133 GCOV_ENABLED!=  grep GCOV opt_global.h || true ; echo
 134 .if !empty(GCOV_ENABLED)
 135 .if ${COMPILER_TYPE} == "gcc"
 136 GCOV_CFLAGS+=    -fprofile-arcs -ftest-coverage
 137 .endif
 138 .endif
 139
 140 CFLAGS+=        ${GCOV_CFLAGS}
 141
 142 # Put configuration-specific C flags last (except for ${PROF}) so that they
 143 # can override the others.
 144 CFLAGS+=        ${CONF_CFLAGS}
 145
 146 .if defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mbuild-id}
 147 LDFLAGS+=       --build-id=sha1
 148 .endif
 149
 150 .if (${MACHINE_CPUARCH} == "aarch64" || ${MACHINE_CPUARCH} == "amd64" || \
 151     ${MACHINE_CPUARCH} == "i386") && \
 152     defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mifunc} == ""
 153 .error amd64/arm64/i386 kernel requires linker ifunc support
 154 .endif
 155 .if ${MACHINE_CPUARCH} == "amd64"
 156 LDFLAGS+=       -z max-page-size=2097152
 157 .if ${LINKER_TYPE} != "lld"
 158 LDFLAGS+=       -z common-page-size=4096
 159 .else
 160 LDFLAGS+=       -z notext -z ifunc-noplt
 161 .endif
 162 .endif
 163
 164 NORMAL_C= ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
 165 NORMAL_S= ${CC:N${CCACHE_BIN}} -c ${ASM_CFLAGS} ${WERROR} ${.IMPSRC}
 166 PROFILE_C= ${CC} -c ${CFLAGS} ${WERROR} ${.IMPSRC}
 167 NORMAL_C_NOWERROR= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC}
 168
 169 NORMAL_M= ${AWK} -f $S/tools/makeobjops.awk ${.IMPSRC} -c ; \
 170           ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.PREFIX}.c
 171
 172 NORMAL_FW= uudecode -o ${.TARGET} ${.ALLSRC}
 173 NORMAL_FWO= ${LD} -b binary --no-warn-mismatch -d -warn-common -r \
 174         -m ${LD_EMULATION} -o ${.TARGET} ${.ALLSRC:M*.fw}
 175
 176 # for ZSTD in the kernel (include zstd/lib/freebsd before other CFLAGS)
 177 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}
 178 # https://github.com/facebook/zstd/commit/812e8f2a [zstd 1.4.1]
 179 # "Note that [GCC] autovectorization still does not do a good job on the
 180 # optimized version, so it's turned off via attribute and flag.  I found
 181 # that neither attribute nor command-line flag were entirely successful in
 182 # turning off vectorization, which is why there were both."
 183 .if ${COMPILER_TYPE} == "gcc"
 184 ZSTD_DECOMPRESS_BLOCK_FLAGS= -fno-tree-vectorize
 185 .endif
 186
 187 # Common for dtrace / zfs
 188 CDDL_CFLAGS=    -DFREEBSD_NAMECACHE -nostdinc -I$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
 189 CDDL_CFLAGS+=   -include $S/cddl/compat/opensolaris/sys/debug_compat.h
 190 CDDL_C=         ${CC} -c ${CDDL_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
 191
 192 # Special flags for managing the compat compiles for ZFS
 193 ZFS_CFLAGS=     -DBUILDING_ZFS -I$S/cddl/contrib/opensolaris/uts/common/fs/zfs
 194 ZFS_CFLAGS+=    -I$S/cddl/contrib/opensolaris/uts/common/fs/zfs/lua
 195 ZFS_CFLAGS+=    -I$S/cddl/contrib/opensolaris/uts/common/zmod
 196 ZFS_CFLAGS+=    -I$S/cddl/contrib/opensolaris/common/zfs
 197 ZFS_CFLAGS+=    ${CDDL_CFLAGS}
 198 ZFS_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${ZFS_CFLAGS}
 199 ZFS_C=          ${CC} -c ${ZFS_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
 200 ZFS_S=          ${CC} -c ${ZFS_ASM_CFLAGS} ${WERROR} ${.IMPSRC}
 201
 202 # Special flags for managing the compat compiles for DTrace
 203 DTRACE_CFLAGS=  -DBUILDING_DTRACE ${CDDL_CFLAGS} -I$S/cddl/dev/dtrace -I$S/cddl/dev/dtrace/${MACHINE_CPUARCH}
 204 .if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386"
 205 DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/intel -I$S/cddl/dev/dtrace/x86
 206 .endif
 207 DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/common/util -I$S -DDIS_MEM -DSMP
 208 DTRACE_ASM_CFLAGS=      -x assembler-with-cpp -DLOCORE ${DTRACE_CFLAGS}
 209 DTRACE_C=       ${CC} -c ${DTRACE_CFLAGS}       ${WERROR} ${PROF} ${.IMPSRC}
 210 DTRACE_S=       ${CC} -c ${DTRACE_ASM_CFLAGS}   ${WERROR} ${.IMPSRC}
 211
 212 # Special flags for managing the compat compiles for DTrace/FBT
 213 FBT_CFLAGS=     -DBUILDING_DTRACE -nostdinc -I$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}
 214 .if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386"
 215 FBT_CFLAGS+=    -I$S/cddl/dev/fbt/x86
 216 .endif
 217 FBT_C=          ${CC} -c ${FBT_CFLAGS}          ${WERROR} ${PROF} ${.IMPSRC}
 218
 219 .if ${MK_CTF} != "no"
 220 NORMAL_CTFCONVERT=      ${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
 221 .elif ${MAKE_VERSION} >= 5201111300
 222 NORMAL_CTFCONVERT=
 223 .else
 224 NORMAL_CTFCONVERT=      @:
 225 .endif
 226
 227 # Linux Kernel Programming Interface C-flags
 228 LINUXKPI_INCLUDES=      -I$S/compat/linuxkpi/common/include
 229 LINUXKPI_C=             ${NORMAL_C} ${LINUXKPI_INCLUDES}
 230
 231 # Infiniband C flags.  Correct include paths and omit errors that linux
 232 # does not honor.
 233 OFEDINCLUDES=   -I$S/ofed/include -I$S/ofed/include/uapi ${LINUXKPI_INCLUDES}
 234 OFEDNOERR=      -Wno-cast-qual -Wno-pointer-arith
 235 OFEDCFLAGS=     ${CFLAGS:N-I*} -DCONFIG_INFINIBAND_USER_MEM \
 236                 ${OFEDINCLUDES} ${CFLAGS:M-I*} ${OFEDNOERR}
 237 OFED_C_NOIMP=   ${CC} -c -o ${.TARGET} ${OFEDCFLAGS} ${WERROR} ${PROF}
 238 OFED_C=         ${OFED_C_NOIMP} ${.IMPSRC}
 239
 240 # mlxfw C flags.
 241 MLXFW_C=        ${OFED_C_NOIMP} \
 242                 -I${SRCTOP}/sys/contrib/xz-embedded/freebsd \
 243                 -I${SRCTOP}/sys/contrib/xz-embedded/linux/lib/xz \
 244                 ${.IMPSRC}
 245
 246 GEN_CFILES= $S/$M/$M/genassym.c ${MFILES:T:S/.m$/.c/}
 247 SYSTEM_CFILES= config.c env.c hints.c vnode_if.c
 248 SYSTEM_DEP= Makefile ${SYSTEM_OBJS}
 249 SYSTEM_OBJS= locore.o ${MDOBJS} ${OBJS}
 250 SYSTEM_OBJS+= ${SYSTEM_CFILES:.c=.o}
 251 SYSTEM_OBJS+= hack.pico
 252
 253 MD_ROOT_SIZE_CONFIGURED!=       grep MD_ROOT_SIZE opt_md.h || true ; echo
 254 .if ${MFS_IMAGE:Uno} != "no"
 255 .if empty(MD_ROOT_SIZE_CONFIGURED)
 256 SYSTEM_OBJS+= embedfs_${MFS_IMAGE:T:R}.o
 257 .endif
 258 .endif
 259 SYSTEM_LD= @${LD} -m ${LD_EMULATION} -Bdynamic -T ${LDSCRIPT} ${_LDFLAGS} \
 260         --no-warn-mismatch --warn-common --export-dynamic \
 261         --dynamic-linker /red/herring \
 262         -o ${.TARGET} -X ${SYSTEM_OBJS} vers.o
 263 SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \
 264         ${SIZE} ${.TARGET} ; chmod 755 ${.TARGET}
 265 SYSTEM_DEP+= ${LDSCRIPT}
 266
 267 # Calculate path for .m files early, if needed.
 268 .if !defined(NO_MODULES) && !defined(__MPATH) && !make(install) && \
 269     (empty(.MAKEFLAGS:M-V) || defined(NO_SKIP_MPATH))
 270 __MPATH!=find ${S:tA}/ -name \*_if.m
 271 .endif
 272
 273 # MKMODULESENV is set here so that port makefiles can augment
 274 # them.
 275
 276 MKMODULESENV+=  MAKEOBJDIRPREFIX=${.OBJDIR}/modules KMODDIR=${KODIR}
 277 MKMODULESENV+=  MACHINE_CPUARCH=${MACHINE_CPUARCH}
 278 MKMODULESENV+=  MACHINE=${MACHINE} MACHINE_ARCH=${MACHINE_ARCH}
 279 MKMODULESENV+=  MODULES_EXTRA="${MODULES_EXTRA}" WITHOUT_MODULES="${WITHOUT_MODULES}"
 280 MKMODULESENV+=  ARCH_FLAGS="${ARCH_FLAGS}"
 281 .if (${KERN_IDENT} == LINT)
 282 MKMODULESENV+=  ALL_MODULES=LINT
 283 .endif
 284 .if defined(MODULES_OVERRIDE)
 285 MKMODULESENV+=  MODULES_OVERRIDE="${MODULES_OVERRIDE}"
 286 .endif
 287 .if defined(DEBUG)
 288 MKMODULESENV+=  DEBUG_FLAGS="${DEBUG}"
 289 .endif
 290 .if !defined(NO_MODULES)
 291 MKMODULESENV+=  __MPATH="${__MPATH}"
 292 .endif
 293
 294 # Architecture and output format arguments for objcopy to convert image to
 295 # object file
 296
 297 .if ${MFS_IMAGE:Uno} != "no"
 298 .if empty(MD_ROOT_SIZE_CONFIGURED)
 299 .if !defined(EMBEDFS_FORMAT.${MACHINE_ARCH})
 300 EMBEDFS_FORMAT.${MACHINE_ARCH}!= awk -F'"' '/OUTPUT_FORMAT/ {print $$2}' ${LDSCRIPT}
 301 .if empty(EMBEDFS_FORMAT.${MACHINE_ARCH})
 302 .undef EMBEDFS_FORMAT.${MACHINE_ARCH}
 303 .endif
 304 .endif
 305
 306 .if !defined(EMBEDFS_ARCH.${MACHINE_ARCH})
 307 EMBEDFS_ARCH.${MACHINE_ARCH}!= sed -n '/OUTPUT_ARCH/s/.*(\(.*\)).*/\1/p' ${LDSCRIPT}
 308 .if empty(EMBEDFS_ARCH.${MACHINE_ARCH})
 309 .undef EMBEDFS_ARCH.${MACHINE_ARCH}
 310 .endif
 311 .endif
 312
 313 EMBEDFS_FORMAT.arm?=            elf32-littlearm
 314 EMBEDFS_FORMAT.armv6?=          elf32-littlearm
 315 EMBEDFS_FORMAT.armv7?=          elf32-littlearm
 316 EMBEDFS_FORMAT.aarch64?=        elf64-littleaarch64
 317 EMBEDFS_FORMAT.mips?=           elf32-tradbigmips
 318 EMBEDFS_FORMAT.mipsel?=         elf32-tradlittlemips
 319 EMBEDFS_FORMAT.mips64?=         elf64-tradbigmips
 320 EMBEDFS_FORMAT.mips64el?=       elf64-tradlittlemips
 321 EMBEDFS_FORMAT.riscv?=          elf64-littleriscv
 322 .endif
 323 .endif
 324
 325 # Detect kernel config options that force stack frames to be turned on.
 326 DDB_ENABLED!=   grep DDB opt_ddb.h || true ; echo
 327 DTR_ENABLED!=   grep KDTRACE_FRAME opt_kdtrace.h || true ; echo
 328 HWPMC_ENABLED!= grep HWPMC opt_hwpmc_hooks.h || true ; echo