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. 12SRCCONF?= /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) || ${MK_AUTO_OBJ} == "yes" 31NO_OBJWALK= t 32NO_MODULES_OBJ= t 33.endif 34.if !defined(NO_OBJWALK) 35_obj= obj 36.endif 37 38# Can be overridden by makeoptions or /etc/make.conf 39KERNEL_KO?= kernel 40KERNEL?= kernel 41KODIR?= /boot/${KERNEL} 42LDSCRIPT_NAME?= ldscript.$M 43LDSCRIPT?= $S/conf/${LDSCRIPT_NAME} 44 45M= ${MACHINE} 46 47AWK?= awk 48CP?= cp 49NM?= nm 50OBJCOPY?= objcopy 51SIZE?= 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 60CTFFLAGS+= -g 61.else 62_MINUS_O= -O2 63.endif 64.if ${MACHINE_CPUARCH} == "amd64" 65.if ${COMPILER_TYPE} == "clang" 66COPTFLAGS?=-O2 -pipe 67.else 68COPTFLAGS?=-O2 -frename-registers -pipe 69.endif 70.else 71COPTFLAGS?=${_MINUS_O} -pipe 72.endif 73.if !empty(COPTFLAGS:M-O[23s]) && empty(COPTFLAGS:M-fno-strict-aliasing) 74COPTFLAGS+= -fno-strict-aliasing 75.endif 76.if !defined(NO_CPU_COPTFLAGS) 77COPTFLAGS+= ${_CPUCFLAGS} 78.endif 79NOSTDINC= -nostdinc 80 81INCLUDES= ${NOSTDINC} ${INCLMAGIC} -I. -I$S -I$S/contrib/ck/include 82 83CFLAGS= ${COPTFLAGS} ${DEBUG} 84CFLAGS+= ${INCLUDES} -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h 85CFLAGS_PARAM_INLINE_UNIT_GROWTH?=100 86CFLAGS_PARAM_LARGE_FUNCTION_GROWTH?=1000 87.if ${MACHINE_CPUARCH} == "mips" 88CFLAGS_ARCH_PARAMS?=--param max-inline-insns-single=1000 -DMACHINE_ARCH='"${MACHINE_ARCH}"' 89.endif 90CFLAGS.gcc+= -fms-extensions -finline-limit=${INLINE_LIMIT} 91CFLAGS.gcc+= --param inline-unit-growth=${CFLAGS_PARAM_INLINE_UNIT_GROWTH} 92CFLAGS.gcc+= --param large-function-growth=${CFLAGS_PARAM_LARGE_FUNCTION_GROWTH} 93CFLAGS.gcc+= -fms-extensions 94.if defined(CFLAGS_ARCH_PARAMS) 95CFLAGS.gcc+=${CFLAGS_ARCH_PARAMS} 96.endif 97WERROR?= -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. 101CFLAGS+= -fno-common 102 103# XXX LOCORE means "don't declare C stuff" not "for locore.s". 104ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS} ${ASM_CFLAGS.${.IMPSRC:T}} 105 106.if defined(PROFLEVEL) && ${PROFLEVEL} >= 1 107CFLAGS+= -DGPROF 108CFLAGS.gcc+= -falign-functions=16 109.if ${PROFLEVEL} >= 2 110CFLAGS+= -DGPROF4 -DGUPROF 111PROF= -pg 112.if ${COMPILER_TYPE} == "gcc" 113PROF+= -mprofiler-epilogue 114.endif 115.else 116PROF= -pg 117.endif 118.endif 119DEFINED_PROF= ${PROF} 120 121KCSAN_ENABLED!= grep KCSAN opt_global.h || true ; echo 122.if !empty(KCSAN_ENABLED) 123SAN_CFLAGS+= -fsanitize=thread 124.endif 125 126KUBSAN_ENABLED!= grep KUBSAN opt_global.h || true ; echo 127.if !empty(KUBSAN_ENABLED) 128SAN_CFLAGS+= -fsanitize=undefined 129.endif 130 131COVERAGE_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) 135SAN_CFLAGS+= -fsanitize-coverage=trace-pc,trace-cmp 136.else 137SAN_CFLAGS+= -fsanitize-coverage=trace-pc 138.endif 139.endif 140 141CFLAGS+= ${SAN_CFLAGS} 142 143GCOV_ENABLED!= grep GCOV opt_global.h || true ; echo 144.if !empty(GCOV_ENABLED) 145.if ${COMPILER_TYPE} == "gcc" 146GCOV_CFLAGS+= -fprofile-arcs -ftest-coverage 147.endif 148.endif 149 150CFLAGS+= ${GCOV_CFLAGS} 151 152# Put configuration-specific C flags last (except for ${PROF}) so that they 153# can override the others. 154CFLAGS+= ${CONF_CFLAGS} 155 156.if defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mbuild-id} 157LDFLAGS+= --build-id=sha1 158.endif 159 160.if (${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" 166LDFLAGS+= -z max-page-size=2097152 167.if ${LINKER_TYPE} != "lld" 168LDFLAGS+= -z common-page-size=4096 169.else 170.if defined(LINKER_FEATURES) && !${LINKER_FEATURES:Mifunc-noplt} 171.warning "Linker ${LD} does not support -z ifunc-noplt -> ifunc calls are unoptimized." 172.else 173LDFLAGS+= -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" 185CFLAGS+= -fPIE 186.endif 187.endif 188 189NORMAL_C= ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.IMPSRC} 190NORMAL_S= ${CC:N${CCACHE_BIN}} -c ${ASM_CFLAGS} ${WERROR} ${.IMPSRC} 191PROFILE_C= ${CC} -c ${CFLAGS} ${WERROR} ${.IMPSRC} 192NORMAL_C_NOWERROR= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC} 193 194NORMAL_M= ${AWK} -f $S/tools/makeobjops.awk ${.IMPSRC} -c ; \ 195 ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.PREFIX}.c 196 197NORMAL_FW= uudecode -o ${.TARGET} ${.ALLSRC} 198NORMAL_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) 202ZSTD_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 ${COMPILER_TYPE} == "gcc" 209ZSTD_DECOMPRESS_BLOCK_FLAGS= -fno-tree-vectorize 210.endif 211 212ZINCDIR=$S/contrib/openzfs/include 213# Common for dtrace / zfs 214CDDL_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 248CDDL_C= ${CC} -c ${CDDL_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC} 249 250# Special flags for managing the compat compiles for ZFS 251ZFS_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" 256ZFS_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" 262ZFS_CFLAGS+= -DBITS_PER_LONG=32 263.else 264ZFS_CFLAGS+= -DBITS_PER_LONG=64 265.endif 266 267 268ZFS_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${ZFS_CFLAGS} 269ZFS_C= ${CC} -c ${ZFS_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC} 270ZFS_RPC_C= ${CC} -c ${ZFS_CFLAGS} -DHAVE_RPC_TYPES ${WERROR} ${PROF} ${.IMPSRC} 271ZFS_S= ${CC} -c ${ZFS_ASM_CFLAGS} ${WERROR} ${.IMPSRC} 272 273 274 275# Special flags for managing the compat compiles for DTrace 276DTRACE_CFLAGS= -DBUILDING_DTRACE ${CDDL_CFLAGS} -I$S/cddl/dev/dtrace -I$S/cddl/dev/dtrace/${MACHINE_CPUARCH} 277.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386" 278DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/intel -I$S/cddl/dev/dtrace/x86 279.endif 280DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/common/util -I$S -DDIS_MEM -DSMP -I$S/cddl/compat/opensolaris 281DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/common 282DTRACE_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${DTRACE_CFLAGS} 283DTRACE_C= ${CC} -c ${DTRACE_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC} 284DTRACE_S= ${CC} -c ${DTRACE_ASM_CFLAGS} ${WERROR} ${.IMPSRC} 285 286# Special flags for managing the compat compiles for DTrace/FBT 287FBT_CFLAGS= -DBUILDING_DTRACE -nostdinc -I$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" || ${MACHINE_CPUARCH} == "i386" 289FBT_CFLAGS+= -I$S/cddl/dev/fbt/x86 290.endif 291FBT_C= ${CC} -c ${FBT_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC} 292 293.if ${MK_CTF} != "no" 294NORMAL_CTFCONVERT= ${CTFCONVERT} ${CTFFLAGS} ${.TARGET} 295.elif ${MAKE_VERSION} >= 5201111300 296NORMAL_CTFCONVERT= 297.else 298NORMAL_CTFCONVERT= @: 299.endif 300 301# Linux Kernel Programming Interface C-flags 302LINUXKPI_INCLUDES= -I$S/compat/linuxkpi/common/include 303LINUXKPI_C= ${NORMAL_C} ${LINUXKPI_INCLUDES} 304 305# Infiniband C flags. Correct include paths and omit errors that linux 306# does not honor. 307OFEDINCLUDES= -I$S/ofed/include -I$S/ofed/include/uapi ${LINUXKPI_INCLUDES} 308OFEDNOERR= -Wno-cast-qual -Wno-pointer-arith 309OFEDCFLAGS= ${CFLAGS:N-I*} -DCONFIG_INFINIBAND_USER_MEM \ 310 ${OFEDINCLUDES} ${CFLAGS:M-I*} ${OFEDNOERR} 311OFED_C_NOIMP= ${CC} -c -o ${.TARGET} ${OFEDCFLAGS} ${WERROR} ${PROF} 312OFED_C= ${OFED_C_NOIMP} ${.IMPSRC} 313 314# mlxfw C flags. 315MLXFW_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 320GEN_CFILES= $S/$M/$M/genassym.c ${MFILES:T:S/.m$/.c/} 321SYSTEM_CFILES= config.c env.c hints.c vnode_if.c 322SYSTEM_DEP= Makefile ${SYSTEM_OBJS} 323SYSTEM_OBJS= locore.o ${MDOBJS} ${OBJS} 324SYSTEM_OBJS+= ${SYSTEM_CFILES:.c=.o} 325SYSTEM_OBJS+= hack.pico 326 327KEYMAP=kbdcontrol -P ${SRCTOP}/share/vt/keymaps -P ${SRCTOP}/share/syscons/keymaps 328KEYMAP_FIX=sed -e 's/^static keymap_t.* = /static keymap_t key_map = /' -e 's/^static accentmap_t.* = /static accentmap_t accent_map = /' 329 330MD_ROOT_SIZE_CONFIGURED!= grep MD_ROOT_SIZE opt_md.h || true ; echo 331.if ${MFS_IMAGE:Uno} != "no" 332.if empty(MD_ROOT_SIZE_CONFIGURED) 333SYSTEM_OBJS+= embedfs_${MFS_IMAGE:T:R}.o 334.endif 335.endif 336SYSTEM_LD_BASECMD= \ 337 ${LD} -m ${LD_EMULATION} -Bdynamic -T ${LDSCRIPT} ${_LDFLAGS} \ 338 --no-warn-mismatch --warn-common --export-dynamic \ 339 --dynamic-linker /red/herring -X 340SYSTEM_LD= @${SYSTEM_LD_BASECMD} -o ${.TARGET} ${SYSTEM_OBJS} vers.o 341SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \ 342 ${SIZE} ${.TARGET} ; chmod 755 ${.TARGET} 343SYSTEM_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 ${S:tA}/ -name \*_if.m 349.endif 350 351# MKMODULESENV is set here so that port makefiles can augment 352# them. 353 354MKMODULESENV+= MAKEOBJDIRPREFIX=${.OBJDIR}/modules KMODDIR=${KODIR} 355MKMODULESENV+= MACHINE_CPUARCH=${MACHINE_CPUARCH} 356MKMODULESENV+= MACHINE=${MACHINE} MACHINE_ARCH=${MACHINE_ARCH} 357MKMODULESENV+= MODULES_EXTRA="${MODULES_EXTRA}" WITHOUT_MODULES="${WITHOUT_MODULES}" 358MKMODULESENV+= ARCH_FLAGS="${ARCH_FLAGS}" 359.if (${KERN_IDENT} == LINT) 360MKMODULESENV+= ALL_MODULES=LINT 361.endif 362.if defined(MODULES_OVERRIDE) 363MKMODULESENV+= MODULES_OVERRIDE="${MODULES_OVERRIDE}" 364.endif 365.if defined(DEBUG) 366MKMODULESENV+= DEBUG_FLAGS="${DEBUG}" 367.endif 368.if !defined(NO_MODULES) 369MKMODULESENV+= __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}) 378EMBEDFS_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}) 385EMBEDFS_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 391EMBEDFS_FORMAT.arm?= elf32-littlearm 392EMBEDFS_FORMAT.armv6?= elf32-littlearm 393EMBEDFS_FORMAT.armv7?= elf32-littlearm 394EMBEDFS_FORMAT.aarch64?= elf64-littleaarch64 395EMBEDFS_FORMAT.mips?= elf32-tradbigmips 396EMBEDFS_FORMAT.mipsel?= elf32-tradlittlemips 397EMBEDFS_FORMAT.mips64?= elf64-tradbigmips 398EMBEDFS_FORMAT.mips64el?= elf64-tradlittlemips 399EMBEDFS_FORMAT.riscv64?= elf64-littleriscv 400.endif 401.endif 402 403# Detect kernel config options that force stack frames to be turned on. 404DDB_ENABLED!= grep DDB opt_ddb.h || true ; echo 405DTR_ENABLED!= grep KDTRACE_FRAME opt_kdtrace.h || true ; echo 406HWPMC_ENABLED!= grep HWPMC opt_hwpmc_hooks.h || true ; echo 407