1 2# Part of a unified Makefile for building kernels. This part contains all 3# of the definitions that need to be before %BEFORE_DEPEND. 4 5# Allow user to configure things that only effect src tree builds. 6# Note: This is duplicated from src.sys.mk to ensure that we include 7# /etc/src.conf when building the kernel. Kernels can be built without 8# the rest of /usr/src, but they still always process SRCCONF even though 9# the normal mechanisms to prevent that (compiling out of tree) won't 10# work. To ensure they do work, we have to duplicate thee few lines here. 11SRCCONF?= /etc/src.conf 12.if (exists(${SRCCONF}) || ${SRCCONF} != "/etc/src.conf") && !target(_srcconf_included_) 13.include "${SRCCONF}" 14_srcconf_included_: 15.endif 16 17.include <bsd.own.mk> 18.include <bsd.compiler.mk> 19.include "kern.opts.mk" 20 21# The kernel build always occurs in the object directory which is .CURDIR. 22.if ${.MAKE.MODE:Unormal:Mmeta} 23.MAKE.MODE+= curdirOk=yes 24.endif 25 26# The kernel build always expects .OBJDIR=.CURDIR. 27.OBJDIR: ${.CURDIR} 28 29.if defined(NO_OBJWALK) || ${MK_AUTO_OBJ} == "yes" 30NO_OBJWALK= t 31NO_MODULES_OBJ= t 32.endif 33.if !defined(NO_OBJWALK) 34_obj= obj 35.endif 36 37# Can be overridden by makeoptions or /etc/make.conf 38KERNEL_KO?= kernel 39KERNEL?= kernel 40KODIR?= /boot/${KERNEL} 41LDSCRIPT_NAME?= ldscript.$M 42LDSCRIPT?= $S/conf/${LDSCRIPT_NAME} 43 44M= ${MACHINE} 45 46AWK?= awk 47CP?= cp 48ELFDUMP?= elfdump 49NM?= nm 50OBJCOPY?= objcopy 51SIZE?= size 52 53.if defined(DEBUG) 54CTFFLAGS+= -g 55.endif 56.if ${MACHINE_CPUARCH} == "amd64" && ${COMPILER_TYPE} != "clang" 57_COPTFLAGS_EXTRA=-frename-registers 58.else 59_COPTFLAGS_EXTRA= 60.endif 61COPTFLAGS?=-O2 -pipe ${_COPTFLAGS_EXTRA} 62.if !empty(COPTFLAGS:M-O[23s]) && empty(COPTFLAGS:M-fno-strict-aliasing) 63COPTFLAGS+= -fno-strict-aliasing 64.endif 65.if !defined(NO_CPU_COPTFLAGS) 66COPTFLAGS+= ${_CPUCFLAGS} 67.endif 68NOSTDINC= -nostdinc 69 70INCLUDES= ${NOSTDINC} ${INCLMAGIC} -I. -I$S -I$S/contrib/ck/include 71 72CFLAGS= ${COPTFLAGS} ${DEBUG} 73CFLAGS+= ${INCLUDES} -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h 74CFLAGS_PARAM_INLINE_UNIT_GROWTH?=100 75CFLAGS_PARAM_LARGE_FUNCTION_GROWTH?=1000 76CFLAGS.gcc+= -fms-extensions -finline-limit=${INLINE_LIMIT} 77CFLAGS.gcc+= --param inline-unit-growth=${CFLAGS_PARAM_INLINE_UNIT_GROWTH} 78CFLAGS.gcc+= --param large-function-growth=${CFLAGS_PARAM_LARGE_FUNCTION_GROWTH} 79CFLAGS.gcc+= -fms-extensions 80.if defined(CFLAGS_ARCH_PARAMS) 81CFLAGS.gcc+=${CFLAGS_ARCH_PARAMS} 82.endif 83WERROR?= -Werror 84# The following should be removed no earlier than LLVM11 being imported into the 85# tree, to ensure we don't regress the build. LLVM11 and GCC10 will switch the 86# default over to -fno-common, making this redundant. 87CFLAGS+= -fno-common 88 89# XXX LOCORE means "don't declare C stuff" not "for locore.s". 90ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS} ${ASM_CFLAGS.${.IMPSRC:T}} 91 92COMPAT_FREEBSD32_ENABLED!= grep COMPAT_FREEBSD32 opt_global.h || true ; echo 93 94KASAN_ENABLED!= grep KASAN opt_global.h || true ; echo 95.if !empty(KASAN_ENABLED) 96SAN_CFLAGS+= -DSAN_NEEDS_INTERCEPTORS -DSAN_INTERCEPTOR_PREFIX=kasan \ 97 -fsanitize=kernel-address \ 98 -mllvm -asan-stack=true \ 99 -mllvm -asan-instrument-dynamic-allocas=true \ 100 -mllvm -asan-globals=true \ 101 -mllvm -asan-use-after-scope=true \ 102 -mllvm -asan-instrumentation-with-call-threshold=0 \ 103 -mllvm -asan-instrument-byval=false 104 105.if ${MACHINE_CPUARCH} == "aarch64" 106# KASAN/ARM64 TODO: -asan-mapping-offset is calculated from: 107# (VM_KERNEL_MIN_ADDRESS >> KASAN_SHADOW_SCALE_SHIFT) + $offset = KASAN_MIN_ADDRESS 108# 109# This is different than amd64, where we have a different 110# KASAN_MIN_ADDRESS, and this offset value should eventually be 111# upstreamed similar to: https://reviews.llvm.org/D98285 112# 113SAN_CFLAGS+= -mllvm -asan-mapping-offset=0xdfff208000000000 114.endif 115.endif 116 117KCSAN_ENABLED!= grep KCSAN opt_global.h || true ; echo 118.if !empty(KCSAN_ENABLED) 119SAN_CFLAGS+= -DSAN_NEEDS_INTERCEPTORS -DSAN_INTERCEPTOR_PREFIX=kcsan \ 120 -fsanitize=thread 121.endif 122 123KMSAN_ENABLED!= grep KMSAN opt_global.h || true ; echo 124.if !empty(KMSAN_ENABLED) 125SAN_CFLAGS+= -DSAN_NEEDS_INTERCEPTORS -DSAN_INTERCEPTOR_PREFIX=kmsan \ 126 -fsanitize=kernel-memory 127.endif 128 129KUBSAN_ENABLED!= grep KUBSAN opt_global.h || true ; echo 130.if !empty(KUBSAN_ENABLED) 131SAN_CFLAGS+= -fsanitize=undefined 132.endif 133 134COVERAGE_ENABLED!= grep COVERAGE opt_global.h || true ; echo 135.if !empty(COVERAGE_ENABLED) 136.if ${COMPILER_TYPE} == "clang" || \ 137 (${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} >= 80100) 138SAN_CFLAGS+= -fsanitize-coverage=trace-pc,trace-cmp 139.else 140SAN_CFLAGS+= -fsanitize-coverage=trace-pc 141.endif 142.endif 143 144CFLAGS+= ${SAN_CFLAGS} 145 146GCOV_ENABLED!= grep GCOV opt_global.h || true ; echo 147.if !empty(GCOV_ENABLED) 148.if ${COMPILER_TYPE} == "gcc" 149GCOV_CFLAGS+= -fprofile-arcs -ftest-coverage 150.endif 151.endif 152 153CFLAGS+= ${GCOV_CFLAGS} 154 155# Put configuration-specific C flags last so that they can override 156# the others. 157CFLAGS+= ${CONF_CFLAGS} 158 159.if defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mbuild-id} 160LDFLAGS+= --build-id=sha1 161.endif 162 163.if (${MACHINE_CPUARCH} == "aarch64" || ${MACHINE_CPUARCH} == "amd64" || \ 164 ${MACHINE_CPUARCH} == "i386" || ${MACHINE} == "powerpc") && \ 165 defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mifunc} == "" && \ 166 !make(install) 167.error amd64/arm64/i386/ppc* kernel requires linker ifunc support 168.endif 169.if ${MACHINE_CPUARCH} == "amd64" 170LDFLAGS+= -z max-page-size=2097152 171.if ${LINKER_TYPE} != "lld" 172LDFLAGS+= -z common-page-size=4096 173.else 174.if defined(LINKER_FEATURES) && !${LINKER_FEATURES:Mifunc-noplt} 175.warning "Linker ${LD} does not support -z ifunc-noplt -> ifunc calls are unoptimized." 176.else 177LDFLAGS+= -z notext -z ifunc-noplt 178.endif 179.endif 180.endif # ${MACHINE_CPUARCH} == "amd64" 181 182.if ${MACHINE_CPUARCH} == "riscv" 183# Hack: Work around undefined weak symbols being out of range when linking with 184# LLD (address is a PC-relative calculation, and BFD works around this by 185# rewriting the instructions to generate an absolute address of 0); -fPIE 186# avoids this since it uses the GOT for all extern symbols, which is overly 187# inefficient for us. Drop once undefined weak symbols work with medany. 188.if ${LINKER_TYPE} == "lld" 189CFLAGS+= -fPIE 190.endif 191.endif 192 193NORMAL_C= ${CC} -c ${CFLAGS} ${WERROR} ${.IMPSRC} 194NORMAL_S= ${CC:N${CCACHE_BIN}} -c ${ASM_CFLAGS} ${WERROR} ${.IMPSRC} 195NORMAL_C_NOWERROR= ${CC} -c ${CFLAGS} ${.IMPSRC} 196 197NORMAL_M= ${AWK} -f $S/tools/makeobjops.awk ${.IMPSRC} -c ; \ 198 ${CC} -c ${CFLAGS} ${WERROR} ${.PREFIX}.c 199 200NORMAL_FW= uudecode -o ${.TARGET} ${.ALLSRC} 201NORMAL_FWO= ${CC:N${CCACHE_BIN}} -c ${ASM_CFLAGS} ${WERROR} -o ${.TARGET} \ 202 $S/kern/firmw.S -DFIRMW_FILE=\""${.ALLSRC:M*.fw}"\" \ 203 -DFIRMW_SYMBOL="${.ALLSRC:M*.fw:C/[-.\/]/_/g}" 204 205# for ZSTD in the kernel (include zstd/lib/freebsd before other CFLAGS) 206ZSTD_C= ${CC} -c -DZSTD_HEAPMODE=1 -I$S/contrib/zstd/lib/freebsd ${CFLAGS} \ 207 -I$S/contrib/zstd/lib -I$S/contrib/zstd/lib/common ${WERROR} \ 208 -Wno-missing-prototypes -U__BMI__ -DZSTD_NO_INTRINSICS ${.IMPSRC} 209# https://github.com/facebook/zstd/commit/812e8f2a [zstd 1.4.1] 210# "Note that [GCC] autovectorization still does not do a good job on the 211# optimized version, so it's turned off via attribute and flag. I found 212# that neither attribute nor command-line flag were entirely successful in 213# turning off vectorization, which is why there were both." 214.if ${COMPILER_TYPE} == "gcc" 215ZSTD_DECOMPRESS_BLOCK_FLAGS= -fno-tree-vectorize 216.endif 217 218ZINCDIR=$S/contrib/openzfs/include 219# Common for dtrace / zfs 220CDDL_CFLAGS= \ 221 -DFREEBSD_NAMECACHE \ 222 -D_SYS_VMEM_H_ \ 223 -D__KERNEL \ 224 -D__KERNEL__ \ 225 -nostdinc \ 226 -include $S/modules/zfs/static_ccompile.h \ 227 -I${ZINCDIR} \ 228 -I${ZINCDIR}/os/freebsd \ 229 -I${ZINCDIR}/os/freebsd/spl \ 230 -I${ZINCDIR}/os/freebsd/zfs \ 231 -I$S/modules/zfs \ 232 -I$S/contrib/openzfs/module/zstd/include \ 233 ${CFLAGS} \ 234 -Wno-cast-qual \ 235 -Wno-duplicate-decl-specifier \ 236 -Wno-missing-braces \ 237 -Wno-missing-prototypes \ 238 -Wno-parentheses \ 239 -Wno-pointer-arith \ 240 -Wno-strict-prototypes \ 241 -Wno-switch \ 242 -Wno-undef \ 243 -Wno-uninitialized \ 244 -Wno-unknown-pragmas \ 245 -Wno-unused \ 246 -include ${ZINCDIR}/os/freebsd/spl/sys/ccompile.h \ 247 -I$S/cddl/contrib/opensolaris/uts/common \ 248 -I$S -I$S/cddl/compat/opensolaris 249CDDL_C= ${CC} -c ${CDDL_CFLAGS} ${WERROR} ${.IMPSRC} 250 251# Special flags for managing the compat compiles for ZFS 252ZFS_CFLAGS+= -I$S/contrib/openzfs/module/icp/include \ 253 ${CDDL_CFLAGS} -DBUILDING_ZFS -DHAVE_UIO_ZEROCOPY \ 254 -DWITH_NETDUMP -D__KERNEL__ -D_SYS_CONDVAR_H_ -DSMP 255 256.if ${MACHINE_ARCH} == "amd64" 257ZFS_CFLAGS+= -D__x86_64 -DHAVE_SSE2 -DHAVE_SSSE3 -DHAVE_SSE4_1 -DHAVE_SSE4_2 \ 258 -DHAVE_AVX -DHAVE_AVX2 -DHAVE_AVX512F -DHAVE_AVX512VL -DHAVE_AVX512BW 259.endif 260 261.if ${MACHINE_ARCH} == "i386" || ${MACHINE_ARCH} == "powerpc" || \ 262 ${MACHINE_ARCH} == "powerpcspe" || ${MACHINE_ARCH} == "arm" 263ZFS_CFLAGS+= -DBITS_PER_LONG=32 264.else 265ZFS_CFLAGS+= -DBITS_PER_LONG=64 266.endif 267 268 269ZFS_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${ZFS_CFLAGS} 270ZFS_C= ${CC} -c ${ZFS_CFLAGS} ${WERROR} ${.IMPSRC} 271ZFS_RPC_C= ${CC} -c ${ZFS_CFLAGS} -DHAVE_RPC_TYPES ${WERROR} ${.IMPSRC} 272ZFS_S= ${CC} -c ${ZFS_ASM_CFLAGS} ${WERROR} ${.IMPSRC} 273 274# ATH driver 275ATH_CFLAGS= -I${SRCTOP}/sys/dev/ath ${NO_WUNUSED_BUT_SET_VARIABLE} 276ATH_C= ${CC} -c ${CFLAGS} ${WERROR} ${ATH_CFLAGS} ${.IMPSRC} 277 278# Special flags for managing the compat compiles for DTrace 279DTRACE_CFLAGS= -DBUILDING_DTRACE ${CDDL_CFLAGS} -I$S/cddl/dev/dtrace -I$S/cddl/dev/dtrace/${MACHINE_CPUARCH} 280.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386" 281DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/intel -I$S/cddl/dev/dtrace/x86 282.endif 283DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/common/util -I$S -DDIS_MEM -DSMP -I$S/cddl/compat/opensolaris 284DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/common 285DTRACE_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${DTRACE_CFLAGS} 286DTRACE_C= ${CC} -c ${DTRACE_CFLAGS} ${WERROR} ${.IMPSRC} 287DTRACE_S= ${CC} -c ${DTRACE_ASM_CFLAGS} ${WERROR} ${.IMPSRC} 288 289# zlib code supports systems that are quite old, but will fix this issue once C2x gets radified. 290# see https://github.com/madler/zlib/issues/633 for details 291ZLIB_CFLAGS= -Wno-cast-qual ${NO_WDEPRECATED_NON_PROTOTYPE} ${NO_WSTRICT_PROTOTYPES} 292ZLIB_C= ${CC} -c ${CFLAGS} ${WERROR} ${ZLIB_CFLAGS} ${.IMPSRC} 293 294# Special flags for managing the compat compiles for DTrace/FBT 295FBT_CFLAGS= -DBUILDING_DTRACE -nostdinc -I$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 296.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386" 297FBT_CFLAGS+= -I$S/cddl/dev/fbt/x86 298.endif 299FBT_C= ${CC} -c ${FBT_CFLAGS} ${WERROR} ${.IMPSRC} 300 301.if ${MK_CTF} != "no" 302NORMAL_CTFCONVERT= ${CTFCONVERT} ${CTFFLAGS} ${.TARGET} 303.elif ${MAKE_VERSION} >= 5201111300 304NORMAL_CTFCONVERT= 305.else 306NORMAL_CTFCONVERT= @: 307.endif 308 309# Linux Kernel Programming Interface C-flags 310LINUXKPI_INCLUDES= -I$S/compat/linuxkpi/common/include \ 311 -I$S/compat/linuxkpi/dummy/include 312LINUXKPI_C= ${NORMAL_C} ${LINUXKPI_INCLUDES} 313 314# Infiniband C flags. Correct include paths and omit errors that linux 315# does not honor. 316OFEDINCLUDES= -I$S/ofed/include -I$S/ofed/include/uapi ${LINUXKPI_INCLUDES} 317OFEDNOERR= -Wno-cast-qual -Wno-pointer-arith 318OFEDCFLAGS= ${CFLAGS:N-I*} -DCONFIG_INFINIBAND_USER_MEM \ 319 ${OFEDINCLUDES} ${CFLAGS:M-I*} ${OFEDNOERR} 320OFED_C_NOIMP= ${CC} -c -o ${.TARGET} ${OFEDCFLAGS} ${WERROR} 321OFED_C= ${OFED_C_NOIMP} ${.IMPSRC} 322 323# mlxfw C flags. 324MLXFW_C= ${OFED_C_NOIMP} \ 325 -I${SRCTOP}/sys/contrib/xz-embedded/freebsd \ 326 -I${SRCTOP}/sys/contrib/xz-embedded/linux/lib/xz \ 327 ${.IMPSRC} 328 329GEN_CFILES= $S/$M/$M/genassym.c ${MFILES:T:S/.m$/.c/} 330SYSTEM_CFILES= config.c env.c hints.c vnode_if.c 331SYSTEM_DEP= Makefile ${SYSTEM_OBJS} 332SYSTEM_OBJS= locore.o ${MDOBJS} ${OBJS} 333SYSTEM_OBJS+= ${SYSTEM_CFILES:.c=.o} 334SYSTEM_OBJS+= force-dynamic-hack.pico 335 336KEYMAP=kbdcontrol -P ${SRCTOP}/share/vt/keymaps -P ${SRCTOP}/share/syscons/keymaps 337KEYMAP_FIX=sed -e 's/^static keymap_t.* = /static keymap_t key_map = /' -e 's/^static accentmap_t.* = /static accentmap_t accent_map = /' 338 339MD_ROOT_SIZE_CONFIGURED!= grep MD_ROOT_SIZE opt_md.h || true ; echo 340.if ${MFS_IMAGE:Uno} != "no" 341.if empty(MD_ROOT_SIZE_CONFIGURED) 342SYSTEM_OBJS+= embedfs_${MFS_IMAGE:T:R}.o 343.endif 344.endif 345SYSTEM_LD_BASECMD= \ 346 ${LD} -m ${LD_EMULATION} -Bdynamic -T ${LDSCRIPT} ${_LDFLAGS} \ 347 --no-warn-mismatch --warn-common --export-dynamic \ 348 --dynamic-linker /red/herring -X 349SYSTEM_LD= @${SYSTEM_LD_BASECMD} -o ${.TARGET} ${SYSTEM_OBJS} vers.o 350SYSTEM_LD_TAIL= @${SIZE} ${.TARGET} ; chmod 755 ${.TARGET} 351SYSTEM_DEP+= ${LDSCRIPT} 352 353# Calculate path for .m files early, if needed. 354.if !defined(NO_MODULES) && !defined(__MPATH) && !make(install) && \ 355 (empty(.MAKEFLAGS:M-V) || defined(NO_SKIP_MPATH)) 356__MPATH!=find ${S:tA}/ -name \*_if.m 357.endif 358 359# MKMODULESENV is set here so that port makefiles can augment 360# them. 361 362MKMODULESENV+= MAKEOBJDIRPREFIX=${.OBJDIR}/modules KMODDIR=${KODIR} 363MKMODULESENV+= MACHINE_CPUARCH=${MACHINE_CPUARCH} 364MKMODULESENV+= MACHINE=${MACHINE} MACHINE_ARCH=${MACHINE_ARCH} 365MKMODULESENV+= MODULES_EXTRA="${MODULES_EXTRA}" WITHOUT_MODULES="${WITHOUT_MODULES}" 366MKMODULESENV+= ARCH_FLAGS="${ARCH_FLAGS}" 367.if (${KERN_IDENT} == LINT) 368MKMODULESENV+= ALL_MODULES=LINT 369.endif 370.if defined(MODULES_OVERRIDE) 371MKMODULESENV+= MODULES_OVERRIDE="${MODULES_OVERRIDE}" 372.endif 373.if defined(DEBUG) 374MKMODULESENV+= DEBUG_FLAGS="${DEBUG}" 375.endif 376.if !defined(NO_MODULES) 377MKMODULESENV+= __MPATH="${__MPATH}" 378.endif 379 380# Detect kernel config options that force stack frames to be turned on. 381DDB_ENABLED!= grep DDB opt_ddb.h || true ; echo 382DTRACE_ENABLED!=grep KDTRACE_FRAME opt_kdtrace.h || true ; echo 383HWPMC_ENABLED!= grep HWPMC opt_hwpmc_hooks.h || true ; echo 384