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 .if ${MACHINE_ARCH} == "powerpc" || ${MACHINE_ARCH} == "powerpcspe"
  55 # Work around clang 11 miscompile on 32 bit powerpc.
  56 _MINUS_O=       -O2
  57 .else
  58 _MINUS_O=       -O
  59 .endif
  60 CTFFLAGS+=      -g
  61 .else
  62 _MINUS_O=       -O2
  63 .endif
  64 .if ${MACHINE_CPUARCH} == "amd64"
  65 .if ${COMPILER_TYPE} == "clang"
  66 COPTFLAGS?=-O2 -pipe
  67 .else
  68 COPTFLAGS?=-O2 -frename-registers -pipe
  69 .endif
  70 .else
  71 COPTFLAGS?=${_MINUS_O} -pipe
  72 .endif
  73 .if !empty(COPTFLAGS:M-O[23s]) && empty(COPTFLAGS:M-fno-strict-aliasing)
  74 COPTFLAGS+= -fno-strict-aliasing
  75 .endif
  76 .if !defined(NO_CPU_COPTFLAGS)
  77 COPTFLAGS+= ${_CPUCFLAGS}
  78 .endif
  79 NOSTDINC= -nostdinc
  80
  81 INCLUDES= ${NOSTDINC} ${INCLMAGIC} -I. -I$S -I$S/contrib/ck/include
  82
  83 CFLAGS= ${COPTFLAGS} ${DEBUG}
  84 CFLAGS+= ${INCLUDES} -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h
  85 CFLAGS_PARAM_INLINE_UNIT_GROWTH?=100
  86 CFLAGS_PARAM_LARGE_FUNCTION_GROWTH?=1000
  87 .if ${MACHINE_CPUARCH} == "mips"
  88 CFLAGS_ARCH_PARAMS?=--param max-inline-insns-single=1000 -DMACHINE_ARCH='"${MACHINE_ARCH}"'
  89 .endif
  90 CFLAGS.gcc+= -fms-extensions -finline-limit=${INLINE_LIMIT}
  91 CFLAGS.gcc+= --param inline-unit-growth=${CFLAGS_PARAM_INLINE_UNIT_GROWTH}
  92 CFLAGS.gcc+= --param large-function-growth=${CFLAGS_PARAM_LARGE_FUNCTION_GROWTH}
  93 CFLAGS.gcc+= -fms-extensions
  94 .if defined(CFLAGS_ARCH_PARAMS)
  95 CFLAGS.gcc+=${CFLAGS_ARCH_PARAMS}
  96 .endif
  97 WERROR?=        -Werror
  98 # The following should be removed no earlier than LLVM11 being imported into the
  99 # tree, to ensure we don't regress the build.  LLVM11 and GCC10 will switch the
 100 # default over to -fno-common, making this redundant.
 101 CFLAGS+=        -fno-common
 102
 103 # XXX LOCORE means "don't declare C stuff" not "for locore.s".
 104 ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS} ${ASM_CFLAGS.${.IMPSRC:T}}
 105
 106 .if defined(PROFLEVEL) && ${PROFLEVEL} >= 1
 107 CFLAGS+=        -DGPROF
 108 CFLAGS.gcc+=    -falign-functions=16
 109 .if ${PROFLEVEL} >= 2
 110 CFLAGS+=        -DGPROF4 -DGUPROF
 111 PROF=           -pg
 112 .if ${COMPILER_TYPE} == "gcc"
 113 PROF+=          -mprofiler-epilogue
 114 .endif
 115 .else
 116 PROF=           -pg
 117 .endif
 118 .endif
 119 DEFINED_PROF=   ${PROF}
 120
 121 KCSAN_ENABLED!= grep KCSAN opt_global.h || true ; echo
 122 .if !empty(KCSAN_ENABLED)
 123 SAN_CFLAGS+=    -fsanitize=thread
 124 .endif
 125
 126 KUBSAN_ENABLED!=        grep KUBSAN opt_global.h || true ; echo
 127 .if !empty(KUBSAN_ENABLED)
 128 SAN_CFLAGS+=    -fsanitize=undefined
 129 .endif
 130
 131 COVERAGE_ENABLED!=      grep COVERAGE opt_global.h || true ; echo
 132 .if !empty(COVERAGE_ENABLED)
 133 .if ${COMPILER_TYPE} == "clang" || \
 134     (${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} >= 80100)
 135 SAN_CFLAGS+=    -fsanitize-coverage=trace-pc,trace-cmp
 136 .else
 137 SAN_CFLAGS+=    -fsanitize-coverage=trace-pc
 138 .endif
 139 .endif
 140
 141 CFLAGS+=        ${SAN_CFLAGS}
 142
 143 GCOV_ENABLED!=  grep GCOV opt_global.h || true ; echo
 144 .if !empty(GCOV_ENABLED)
 145 .if ${COMPILER_TYPE} == "gcc"
 146 GCOV_CFLAGS+=    -fprofile-arcs -ftest-coverage
 147 .endif
 148 .endif
 149
 150 CFLAGS+=        ${GCOV_CFLAGS}
 151
 152 # Put configuration-specific C flags last (except for ${PROF}) so that they
 153 # can override the others.
 154 CFLAGS+=        ${CONF_CFLAGS}
 155
 156 .if defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mbuild-id}
 157 LDFLAGS+=       --build-id=sha1
 158 .endif
 159
 160 .if (${MACHINE_CPUARCH} == "aarch64" || ${MACHINE_CPUARCH} == "amd64" || \
 161     ${MACHINE_CPUARCH} == "i386" || ${MACHINE} == "powerpc") && \
 162     defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mifunc} == ""
 163 .error amd64/arm64/i386/ppc* kernel requires linker ifunc support
 164 .endif
 165 .if ${MACHINE_CPUARCH} == "amd64"
 166 LDFLAGS+=       -z max-page-size=2097152
 167 .if ${LINKER_TYPE} != "lld"
 168 LDFLAGS+=       -z common-page-size=4096
 169 .else
 170 .if defined(LINKER_FEATURES) && !${LINKER_FEATURES:Mifunc-noplt}
 171 .warning "Linker ${LD} does not support -z ifunc-noplt -> ifunc calls are unoptimized."
 172 .else
 173 LDFLAGS+=       -z notext -z ifunc-noplt
 174 .endif
 175 .endif
 176 .endif  # ${MACHINE_CPUARCH} == "amd64"
 177
 178 .if ${MACHINE_CPUARCH} == "riscv"
 179 # Hack: Work around undefined weak symbols being out of range when linking with
 180 # LLD (address is a PC-relative calculation, and BFD works around this by
 181 # rewriting the instructions to generate an absolute address of 0); -fPIE
 182 # avoids this since it uses the GOT for all extern symbols, which is overly
 183 # inefficient for us. Drop once undefined weak symbols work with medany.
 184 .if ${LINKER_TYPE} == "lld"
 185 CFLAGS+=        -fPIE
 186 .endif
 187 .endif
 188
 189 NORMAL_C= ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
 190 NORMAL_S= ${CC:N${CCACHE_BIN}} -c ${ASM_CFLAGS} ${WERROR} ${.IMPSRC}
 191 PROFILE_C= ${CC} -c ${CFLAGS} ${WERROR} ${.IMPSRC}
 192 NORMAL_C_NOWERROR= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC}
 193
 194 NORMAL_M= ${AWK} -f $S/tools/makeobjops.awk ${.IMPSRC} -c ; \
 195           ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.PREFIX}.c
 196
 197 NORMAL_FW= uudecode -o ${.TARGET} ${.ALLSRC}
 198 NORMAL_FWO= ${LD} -b binary --no-warn-mismatch -d -warn-common -r \
 199         -m ${LD_EMULATION} -o ${.TARGET} ${.ALLSRC:M*.fw}
 200
 201 # for ZSTD in the kernel (include zstd/lib/freebsd before other CFLAGS)
 202 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}
 203 # https://github.com/facebook/zstd/commit/812e8f2a [zstd 1.4.1]
 204 # "Note that [GCC] autovectorization still does not do a good job on the
 205 # optimized version, so it's turned off via attribute and flag.  I found
 206 # that neither attribute nor command-line flag were entirely successful in
 207 # turning off vectorization, which is why there were both."
 208 .if ${COMPILER_TYPE} == "gcc"
 209 ZSTD_DECOMPRESS_BLOCK_FLAGS= -fno-tree-vectorize
 210 .endif
 211
 212 ZINCDIR=$S/contrib/openzfs/include
 213 # Common for dtrace / zfs
 214 CDDL_CFLAGS=    \
 215         -DFREEBSD_NAMECACHE \
 216         -D_SYS_VMEM_H_ \
 217         -D__KERNEL \
 218         -D__KERNEL__ \
 219         -nostdinc \
 220         -include $S/modules/zfs/static_ccompile.h \
 221         -I${ZINCDIR} \
 222         -I${ZINCDIR}/spl \
 223         -I${ZINCDIR}/os/freebsd \
 224         -I${ZINCDIR}/os/freebsd/spl \
 225         -I${ZINCDIR}/os/freebsd/zfs  \
 226         -I$S/modules/zfs \
 227         -I$S/contrib/openzfs/module/zstd/include \
 228         -I$S/contrib/openzfs/module/zstd/lib/freebsd/ \
 229         ${CFLAGS} \
 230         -Wno-unknown-pragmas \
 231         -Wno-missing-prototypes \
 232         -Wno-undef \
 233         -Wno-strict-prototypes \
 234         -Wno-cast-qual \
 235         -Wno-parentheses \
 236         -Wno-redundant-decls \
 237         -Wno-missing-braces \
 238         -Wno-uninitialized \
 239         -Wno-unused \
 240         -Wno-inline \
 241         -Wno-switch \
 242         -Wno-pointer-arith \
 243         -Wno-unknown-pragmas \
 244         -Wno-duplicate-decl-specifier \
 245         -include ${ZINCDIR}/os/freebsd/spl/sys/ccompile.h \
 246         -I$S/cddl/contrib/opensolaris/uts/common \
 247         -I$S -I$S/cddl/compat/opensolaris
 248 CDDL_C=         ${CC} -c ${CDDL_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
 249
 250 # Special flags for managing the compat compiles for ZFS
 251 ZFS_CFLAGS+=    ${CDDL_CFLAGS} -DBUILDING_ZFS -DHAVE_UIO_ZEROCOPY \
 252         -DWITH_NETDUMP -D__KERNEL__ -D_SYS_CONDVAR_H_ -DSMP \
 253         -DIN_FREEBSD_BASE -DHAVE_KSID
 254
 255 .if ${MACHINE_ARCH} == "amd64"
 256 ZFS_CFLAGS+= -DHAVE_AVX2 -DHAVE_AVX -D__x86_64 -DHAVE_SSE2 -DHAVE_AVX512F \
 257         -DHAVE_SSSE3 -DHAVE_AVX512BW
 258 .endif
 259
 260 .if ${MACHINE_ARCH} == "i386" || ${MACHINE_ARCH} == "powerpc" || \
 261         ${MACHINE_ARCH} == "powerpcspe" || ${MACHINE_ARCH} == "arm"
 262 ZFS_CFLAGS+= -DBITS_PER_LONG=32
 263 .else
 264 ZFS_CFLAGS+= -DBITS_PER_LONG=64
 265 .endif
 266
 267
 268 ZFS_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${ZFS_CFLAGS}
 269 ZFS_C=          ${CC} -c ${ZFS_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
 270 ZFS_RPC_C=      ${CC} -c ${ZFS_CFLAGS} -DHAVE_RPC_TYPES ${WERROR} ${PROF} ${.IMPSRC}
 271 ZFS_S=          ${CC} -c ${ZFS_ASM_CFLAGS} ${WERROR} ${.IMPSRC}
 272
 273
 274
 275 # Special flags for managing the compat compiles for DTrace
 276 DTRACE_CFLAGS=  -DBUILDING_DTRACE ${CDDL_CFLAGS} -I$S/cddl/dev/dtrace -I$S/cddl/dev/dtrace/${MACHINE_CPUARCH}
 277 .if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386"
 278 DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/intel -I$S/cddl/dev/dtrace/x86
 279 .endif
 280 DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/common/util -I$S -DDIS_MEM -DSMP -I$S/cddl/compat/opensolaris
 281 DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/common
 282 DTRACE_ASM_CFLAGS=      -x assembler-with-cpp -DLOCORE ${DTRACE_CFLAGS}
 283 DTRACE_C=       ${CC} -c ${DTRACE_CFLAGS}       ${WERROR} ${PROF} ${.IMPSRC}
 284 DTRACE_S=       ${CC} -c ${DTRACE_ASM_CFLAGS}   ${WERROR} ${.IMPSRC}
 285
 286 # Special flags for managing the compat compiles for DTrace/FBT
 287 FBT_CFLAGS=     -DBUILDING_DTRACE -nostdinc -I$S/cddl/dev/fbt/${MACHINE_CPUARCH} -I$S/cddl/dev/fbt ${CDDL_CFLAGS} -I$S/cddl/compat/opensolaris -I$S/cddl/contrib/opensolaris/uts/common
 288 .if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386"
 289 FBT_CFLAGS+=    -I$S/cddl/dev/fbt/x86
 290 .endif
 291 FBT_C=          ${CC} -c ${FBT_CFLAGS}          ${WERROR} ${PROF} ${.IMPSRC}
 292
 293 .if ${MK_CTF} != "no"
 294 NORMAL_CTFCONVERT=      ${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
 295 .elif ${MAKE_VERSION} >= 5201111300
 296 NORMAL_CTFCONVERT=
 297 .else
 298 NORMAL_CTFCONVERT=      @:
 299 .endif
 300
 301 # Linux Kernel Programming Interface C-flags
 302 LINUXKPI_INCLUDES=      -I$S/compat/linuxkpi/common/include
 303 LINUXKPI_C=             ${NORMAL_C} ${LINUXKPI_INCLUDES}
 304
 305 # Infiniband C flags.  Correct include paths and omit errors that linux
 306 # does not honor.
 307 OFEDINCLUDES=   -I$S/ofed/include -I$S/ofed/include/uapi ${LINUXKPI_INCLUDES}
 308 OFEDNOERR=      -Wno-cast-qual -Wno-pointer-arith
 309 OFEDCFLAGS=     ${CFLAGS:N-I*} -DCONFIG_INFINIBAND_USER_MEM \
 310                 ${OFEDINCLUDES} ${CFLAGS:M-I*} ${OFEDNOERR}
 311 OFED_C_NOIMP=   ${CC} -c -o ${.TARGET} ${OFEDCFLAGS} ${WERROR} ${PROF}
 312 OFED_C=         ${OFED_C_NOIMP} ${.IMPSRC}
 313
 314 # mlxfw C flags.
 315 MLXFW_C=        ${OFED_C_NOIMP} \
 316                 -I${SRCTOP}/sys/contrib/xz-embedded/freebsd \
 317                 -I${SRCTOP}/sys/contrib/xz-embedded/linux/lib/xz \
 318                 ${.IMPSRC}
 319
 320 GEN_CFILES= $S/$M/$M/genassym.c ${MFILES:T:S/.m$/.c/}
 321 SYSTEM_CFILES= config.c env.c hints.c vnode_if.c
 322 SYSTEM_DEP= Makefile ${SYSTEM_OBJS}
 323 SYSTEM_OBJS= locore.o ${MDOBJS} ${OBJS}
 324 SYSTEM_OBJS+= ${SYSTEM_CFILES:.c=.o}
 325 SYSTEM_OBJS+= hack.pico
 326
 327 KEYMAP=kbdcontrol -P ${SRCTOP}/share/vt/keymaps -P ${SRCTOP}/share/syscons/keymaps
 328 KEYMAP_FIX=sed -e 's/^static keymap_t.* = /static keymap_t key_map = /' -e 's/^static accentmap_t.* = /static accentmap_t accent_map = /'
 329
 330 MD_ROOT_SIZE_CONFIGURED!=       grep MD_ROOT_SIZE opt_md.h || true ; echo
 331 .if ${MFS_IMAGE:Uno} != "no"
 332 .if empty(MD_ROOT_SIZE_CONFIGURED)
 333 SYSTEM_OBJS+= embedfs_${MFS_IMAGE:T:R}.o
 334 .endif
 335 .endif
 336 SYSTEM_LD_BASECMD= \
 337         ${LD} -m ${LD_EMULATION} -Bdynamic -T ${LDSCRIPT} ${_LDFLAGS} \
 338         --no-warn-mismatch --warn-common --export-dynamic \
 339         --dynamic-linker /red/herring -X
 340 SYSTEM_LD= @${SYSTEM_LD_BASECMD} -o ${.TARGET} ${SYSTEM_OBJS} vers.o
 341 SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \
 342         ${SIZE} ${.TARGET} ; chmod 755 ${.TARGET}
 343 SYSTEM_DEP+= ${LDSCRIPT}
 344
 345 # Calculate path for .m files early, if needed.
 346 .if !defined(NO_MODULES) && !defined(__MPATH) && !make(install) && \
 347     (empty(.MAKEFLAGS:M-V) || defined(NO_SKIP_MPATH))
 348 __MPATH!=find ${S:tA}/ -name \*_if.m
 349 .endif
 350
 351 # MKMODULESENV is set here so that port makefiles can augment
 352 # them.
 353
 354 MKMODULESENV+=  MAKEOBJDIRPREFIX=${.OBJDIR}/modules KMODDIR=${KODIR}
 355 MKMODULESENV+=  MACHINE_CPUARCH=${MACHINE_CPUARCH}
 356 MKMODULESENV+=  MACHINE=${MACHINE} MACHINE_ARCH=${MACHINE_ARCH}
 357 MKMODULESENV+=  MODULES_EXTRA="${MODULES_EXTRA}" WITHOUT_MODULES="${WITHOUT_MODULES}"
 358 MKMODULESENV+=  ARCH_FLAGS="${ARCH_FLAGS}"
 359 .if (${KERN_IDENT} == LINT)
 360 MKMODULESENV+=  ALL_MODULES=LINT
 361 .endif
 362 .if defined(MODULES_OVERRIDE)
 363 MKMODULESENV+=  MODULES_OVERRIDE="${MODULES_OVERRIDE}"
 364 .endif
 365 .if defined(DEBUG)
 366 MKMODULESENV+=  DEBUG_FLAGS="${DEBUG}"
 367 .endif
 368 .if !defined(NO_MODULES)
 369 MKMODULESENV+=  __MPATH="${__MPATH}"
 370 .endif
 371
 372 # Architecture and output format arguments for objcopy to convert image to
 373 # object file
 374
 375 .if ${MFS_IMAGE:Uno} != "no"
 376 .if empty(MD_ROOT_SIZE_CONFIGURED)
 377 .if !defined(EMBEDFS_FORMAT.${MACHINE_ARCH})
 378 EMBEDFS_FORMAT.${MACHINE_ARCH}!= awk -F'"' '/OUTPUT_FORMAT/ {print $$2}' ${LDSCRIPT}
 379 .if empty(EMBEDFS_FORMAT.${MACHINE_ARCH})
 380 .undef EMBEDFS_FORMAT.${MACHINE_ARCH}
 381 .endif
 382 .endif
 383
 384 .if !defined(EMBEDFS_ARCH.${MACHINE_ARCH})
 385 EMBEDFS_ARCH.${MACHINE_ARCH}!= sed -n '/OUTPUT_ARCH/s/.*(\(.*\)).*/\1/p' ${LDSCRIPT}
 386 .if empty(EMBEDFS_ARCH.${MACHINE_ARCH})
 387 .undef EMBEDFS_ARCH.${MACHINE_ARCH}
 388 .endif
 389 .endif
 390
 391 EMBEDFS_FORMAT.arm?=            elf32-littlearm
 392 EMBEDFS_FORMAT.armv6?=          elf32-littlearm
 393 EMBEDFS_FORMAT.armv7?=          elf32-littlearm
 394 EMBEDFS_FORMAT.aarch64?=        elf64-littleaarch64
 395 EMBEDFS_FORMAT.mips?=           elf32-tradbigmips
 396 EMBEDFS_FORMAT.mipsel?=         elf32-tradlittlemips
 397 EMBEDFS_FORMAT.mips64?=         elf64-tradbigmips
 398 EMBEDFS_FORMAT.mips64el?=       elf64-tradlittlemips
 399 EMBEDFS_FORMAT.riscv64?=        elf64-littleriscv
 400 .endif
 401 .endif
 402
 403 # Detect kernel config options that force stack frames to be turned on.
 404 DDB_ENABLED!=   grep DDB opt_ddb.h || true ; echo
 405 DTR_ENABLED!=   grep KDTRACE_FRAME opt_kdtrace.h || true ; echo
 406 HWPMC_ENABLED!= grep HWPMC opt_hwpmc_hooks.h || true ; echo