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) 125# Disable -fno-sanitize-memory-param-retval until interceptors have been 126# updated to work properly with it. 127SAN_CFLAGS+= -DSAN_NEEDS_INTERCEPTORS -DSAN_INTERCEPTOR_PREFIX=kmsan \ 128 -fsanitize=kernel-memory 129.if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 160000 130SAN_CFLAGS+= -fno-sanitize-memory-param-retval 131.endif 132.endif 133 134KUBSAN_ENABLED!= grep KUBSAN opt_global.h || true ; echo 135.if !empty(KUBSAN_ENABLED) 136SAN_CFLAGS+= -fsanitize=undefined 137.endif 138 139COVERAGE_ENABLED!= grep COVERAGE opt_global.h || true ; echo 140.if !empty(COVERAGE_ENABLED) 141.if ${COMPILER_TYPE} == "clang" || \ 142 (${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} >= 80100) 143SAN_CFLAGS+= -fsanitize-coverage=trace-pc,trace-cmp 144.else 145SAN_CFLAGS+= -fsanitize-coverage=trace-pc 146.endif 147.endif 148 149CFLAGS+= ${SAN_CFLAGS} 150 151GCOV_ENABLED!= grep GCOV opt_global.h || true ; echo 152.if !empty(GCOV_ENABLED) 153.if ${COMPILER_TYPE} == "gcc" 154GCOV_CFLAGS+= -fprofile-arcs -ftest-coverage 155.endif 156.endif 157 158CFLAGS+= ${GCOV_CFLAGS} 159 160# Put configuration-specific C flags last so that they can override 161# the others. 162CFLAGS+= ${CONF_CFLAGS} 163 164.if defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mbuild-id} 165LDFLAGS+= --build-id=sha1 166.endif 167 168.if (${MACHINE_CPUARCH} == "aarch64" || ${MACHINE_CPUARCH} == "amd64" || \ 169 ${MACHINE_CPUARCH} == "i386" || ${MACHINE} == "powerpc") && \ 170 defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mifunc} == "" && \ 171 !make(install) 172.error amd64/arm64/i386/ppc* kernel requires linker ifunc support 173.endif 174.if ${MACHINE_CPUARCH} == "amd64" 175LDFLAGS+= -z max-page-size=2097152 176.if ${LINKER_TYPE} != "lld" 177LDFLAGS+= -z common-page-size=4096 178.else 179.if defined(LINKER_FEATURES) && !${LINKER_FEATURES:Mifunc-noplt} 180.warning "Linker ${LD} does not support -z ifunc-noplt -> ifunc calls are unoptimized." 181.else 182LDFLAGS+= -z notext -z ifunc-noplt 183.endif 184.endif 185.endif # ${MACHINE_CPUARCH} == "amd64" 186 187.if ${MACHINE_CPUARCH} == "riscv" 188# Hack: Work around undefined weak symbols being out of range when linking with 189# LLD (address is a PC-relative calculation, and BFD works around this by 190# rewriting the instructions to generate an absolute address of 0); -fPIE 191# avoids this since it uses the GOT for all extern symbols, which is overly 192# inefficient for us. Drop once undefined weak symbols work with medany. 193.if ${LINKER_TYPE} == "lld" 194CFLAGS+= -fPIE 195.endif 196.endif 197 198NORMAL_C= ${CC} -c ${CFLAGS} ${WERROR} ${.IMPSRC} 199NORMAL_S= ${CC:N${CCACHE_BIN}} -c ${ASM_CFLAGS} ${WERROR} ${.IMPSRC} 200NORMAL_C_NOWERROR= ${CC} -c ${CFLAGS} ${.IMPSRC} 201 202NORMAL_M= ${AWK} -f $S/tools/makeobjops.awk ${.IMPSRC} -c ; \ 203 ${CC} -c ${CFLAGS} ${WERROR} ${.PREFIX}.c 204 205NORMAL_FW= uudecode -o ${.TARGET} ${.ALLSRC} 206NORMAL_FWO= ${CC:N${CCACHE_BIN}} -c ${ASM_CFLAGS} ${WERROR} -o ${.TARGET} \ 207 $S/kern/firmw.S -DFIRMW_FILE=\""${.ALLSRC:M*.fw}"\" \ 208 -DFIRMW_SYMBOL="${.ALLSRC:M*.fw:C/[-.\/]/_/g}" 209 210# for ZSTD in the kernel (include zstd/lib/freebsd before other CFLAGS) 211ZSTD_C= ${CC} -c -DZSTD_HEAPMODE=1 -I$S/contrib/zstd/lib/freebsd ${CFLAGS} \ 212 -I$S/contrib/zstd/lib -I$S/contrib/zstd/lib/common ${WERROR} \ 213 -Wno-missing-prototypes -U__BMI__ -DZSTD_NO_INTRINSICS ${.IMPSRC} 214# https://github.com/facebook/zstd/commit/812e8f2a [zstd 1.4.1] 215# "Note that [GCC] autovectorization still does not do a good job on the 216# optimized version, so it's turned off via attribute and flag. I found 217# that neither attribute nor command-line flag were entirely successful in 218# turning off vectorization, which is why there were both." 219.if ${COMPILER_TYPE} == "gcc" 220ZSTD_DECOMPRESS_BLOCK_FLAGS= -fno-tree-vectorize 221.endif 222 223ZINCDIR=$S/contrib/openzfs/include 224# Common for dtrace / zfs 225CDDL_CFLAGS= \ 226 -DFREEBSD_NAMECACHE \ 227 -D_SYS_VMEM_H_ \ 228 -D__KERNEL \ 229 -D__KERNEL__ \ 230 -nostdinc \ 231 -include $S/modules/zfs/static_ccompile.h \ 232 -I${ZINCDIR} \ 233 -I${ZINCDIR}/os/freebsd \ 234 -I${ZINCDIR}/os/freebsd/spl \ 235 -I${ZINCDIR}/os/freebsd/zfs \ 236 -I$S/modules/zfs \ 237 -I$S/contrib/openzfs/module/zstd/include \ 238 ${CFLAGS} \ 239 -Wno-cast-qual \ 240 -Wno-duplicate-decl-specifier \ 241 -Wno-missing-braces \ 242 -Wno-missing-prototypes \ 243 -Wno-parentheses \ 244 -Wno-pointer-arith \ 245 -Wno-strict-prototypes \ 246 -Wno-switch \ 247 -Wno-undef \ 248 -Wno-uninitialized \ 249 -Wno-unknown-pragmas \ 250 -Wno-unused \ 251 -include ${ZINCDIR}/os/freebsd/spl/sys/ccompile.h \ 252 -I$S/cddl/contrib/opensolaris/uts/common \ 253 -I$S -I$S/cddl/compat/opensolaris 254CDDL_C= ${CC} -c ${CDDL_CFLAGS} ${WERROR} ${.IMPSRC} 255 256# Special flags for managing the compat compiles for ZFS 257ZFS_CFLAGS+= -I$S/contrib/openzfs/module/icp/include \ 258 ${CDDL_CFLAGS} -DBUILDING_ZFS -DHAVE_UIO_ZEROCOPY \ 259 -DWITH_NETDUMP -D__KERNEL__ -D_SYS_CONDVAR_H_ -DSMP 260 261.if ${MACHINE_ARCH} == "amd64" 262ZFS_CFLAGS+= -D__x86_64 -DHAVE_SSE2 -DHAVE_SSSE3 -DHAVE_SSE4_1 -DHAVE_SSE4_2 \ 263 -DHAVE_AVX -DHAVE_AVX2 -DHAVE_AVX512F -DHAVE_AVX512VL -DHAVE_AVX512BW 264.endif 265 266.if ${MACHINE_ARCH} == "i386" || ${MACHINE_ARCH} == "powerpc" || \ 267 ${MACHINE_ARCH} == "powerpcspe" || ${MACHINE_ARCH} == "arm" 268ZFS_CFLAGS+= -DBITS_PER_LONG=32 269.else 270ZFS_CFLAGS+= -DBITS_PER_LONG=64 271.endif 272 273 274ZFS_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${ZFS_CFLAGS} 275ZFS_C= ${CC} -c ${ZFS_CFLAGS} ${WERROR} ${.IMPSRC} 276ZFS_RPC_C= ${CC} -c ${ZFS_CFLAGS} -DHAVE_RPC_TYPES ${WERROR} ${.IMPSRC} 277ZFS_S= ${CC} -c ${ZFS_ASM_CFLAGS} ${WERROR} ${.IMPSRC} 278 279# ATH driver 280ATH_CFLAGS= -I${SRCTOP}/sys/dev/ath ${NO_WUNUSED_BUT_SET_VARIABLE} 281ATH_C= ${CC} -c ${CFLAGS} ${WERROR} ${ATH_CFLAGS} ${.IMPSRC} 282 283# Special flags for managing the compat compiles for DTrace 284DTRACE_CFLAGS= -DBUILDING_DTRACE ${CDDL_CFLAGS} -I$S/cddl/dev/dtrace -I$S/cddl/dev/dtrace/${MACHINE_CPUARCH} 285.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386" 286DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/intel -I$S/cddl/dev/dtrace/x86 287.endif 288DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/common/util -I$S -DDIS_MEM -DSMP -I$S/cddl/compat/opensolaris 289DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/common 290DTRACE_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${DTRACE_CFLAGS} 291DTRACE_C= ${CC} -c ${DTRACE_CFLAGS} ${WERROR} ${.IMPSRC} 292DTRACE_S= ${CC} -c ${DTRACE_ASM_CFLAGS} ${WERROR} ${.IMPSRC} 293 294# zlib code supports systems that are quite old, but will fix this issue once C2x gets radified. 295# see https://github.com/madler/zlib/issues/633 for details 296ZLIB_CFLAGS= -Wno-cast-qual ${NO_WDEPRECATED_NON_PROTOTYPE} ${NO_WSTRICT_PROTOTYPES} 297ZLIB_C= ${CC} -c ${CFLAGS} ${WERROR} ${ZLIB_CFLAGS} ${.IMPSRC} 298 299# Special flags for managing the compat compiles for DTrace/FBT 300FBT_CFLAGS= -DBUILDING_DTRACE -nostdinc -I$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 301.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386" 302FBT_CFLAGS+= -I$S/cddl/dev/fbt/x86 303.endif 304FBT_C= ${CC} -c ${FBT_CFLAGS} ${WERROR} ${.IMPSRC} 305 306.if ${MK_CTF} != "no" 307NORMAL_CTFCONVERT= ${CTFCONVERT} ${CTFFLAGS} ${.TARGET} 308.elif ${MAKE_VERSION} >= 5201111300 309NORMAL_CTFCONVERT= 310.else 311NORMAL_CTFCONVERT= @: 312.endif 313 314# Linux Kernel Programming Interface C-flags 315LINUXKPI_INCLUDES= -I$S/compat/linuxkpi/common/include \ 316 -I$S/compat/linuxkpi/dummy/include 317LINUXKPI_C= ${NORMAL_C} ${LINUXKPI_INCLUDES} 318 319# Infiniband C flags. Correct include paths and omit errors that linux 320# does not honor. 321OFEDINCLUDES= -I$S/ofed/include -I$S/ofed/include/uapi ${LINUXKPI_INCLUDES} 322OFEDNOERR= -Wno-cast-qual -Wno-pointer-arith 323OFEDCFLAGS= ${CFLAGS:N-I*} -DCONFIG_INFINIBAND_USER_MEM \ 324 ${OFEDINCLUDES} ${CFLAGS:M-I*} ${OFEDNOERR} 325OFED_C_NOIMP= ${CC} -c -o ${.TARGET} ${OFEDCFLAGS} ${WERROR} 326OFED_C= ${OFED_C_NOIMP} ${.IMPSRC} 327 328# mlxfw C flags. 329MLXFW_C= ${OFED_C_NOIMP} \ 330 -I${SRCTOP}/sys/contrib/xz-embedded/freebsd \ 331 -I${SRCTOP}/sys/contrib/xz-embedded/linux/lib/xz \ 332 ${.IMPSRC} 333 334GEN_CFILES= $S/$M/$M/genassym.c ${MFILES:T:S/.m$/.c/} 335SYSTEM_CFILES= config.c env.c hints.c vnode_if.c 336SYSTEM_DEP= Makefile ${SYSTEM_OBJS} 337SYSTEM_OBJS= locore.o ${MDOBJS} ${OBJS} 338SYSTEM_OBJS+= ${SYSTEM_CFILES:.c=.o} 339SYSTEM_OBJS+= force-dynamic-hack.pico 340 341KEYMAP=kbdcontrol -P ${SRCTOP}/share/vt/keymaps -P ${SRCTOP}/share/syscons/keymaps 342KEYMAP_FIX=sed -e 's/^static keymap_t.* = /static keymap_t key_map = /' -e 's/^static accentmap_t.* = /static accentmap_t accent_map = /' 343 344MD_ROOT_SIZE_CONFIGURED!= grep MD_ROOT_SIZE opt_md.h || true ; echo 345.if ${MFS_IMAGE:Uno} != "no" 346.if empty(MD_ROOT_SIZE_CONFIGURED) 347SYSTEM_OBJS+= embedfs_${MFS_IMAGE:T:R}.o 348.endif 349.endif 350SYSTEM_LD_BASECMD= \ 351 ${LD} -m ${LD_EMULATION} -Bdynamic -T ${LDSCRIPT} ${_LDFLAGS} \ 352 --no-warn-mismatch --warn-common --export-dynamic \ 353 --dynamic-linker /red/herring -X 354SYSTEM_LD= @${SYSTEM_LD_BASECMD} -o ${.TARGET} ${SYSTEM_OBJS} vers.o 355SYSTEM_LD_TAIL= @${SIZE} ${.TARGET} ; chmod 755 ${.TARGET} 356SYSTEM_DEP+= ${LDSCRIPT} 357 358# Calculate path for .m files early, if needed. 359.if !defined(NO_MODULES) && !defined(__MPATH) && !make(install) && \ 360 (empty(.MAKEFLAGS:M-V) || defined(NO_SKIP_MPATH)) 361__MPATH!=find ${S:tA}/ -name \*_if.m 362.endif 363 364# MKMODULESENV is set here so that port makefiles can augment 365# them. 366 367MKMODULESENV+= MAKEOBJDIRPREFIX=${.OBJDIR}/modules KMODDIR=${KODIR} 368MKMODULESENV+= MACHINE_CPUARCH=${MACHINE_CPUARCH} 369MKMODULESENV+= MACHINE=${MACHINE} MACHINE_ARCH=${MACHINE_ARCH} 370MKMODULESENV+= MODULES_EXTRA="${MODULES_EXTRA}" WITHOUT_MODULES="${WITHOUT_MODULES}" 371MKMODULESENV+= ARCH_FLAGS="${ARCH_FLAGS}" 372.if (${KERN_IDENT} == LINT) 373MKMODULESENV+= ALL_MODULES=LINT 374.endif 375.if defined(MODULES_OVERRIDE) 376MKMODULESENV+= MODULES_OVERRIDE="${MODULES_OVERRIDE}" 377.endif 378.if defined(DEBUG) 379MKMODULESENV+= DEBUG_FLAGS="${DEBUG}" 380.endif 381.if !defined(NO_MODULES) 382MKMODULESENV+= __MPATH="${__MPATH}" 383.endif 384 385# Detect kernel config options that force stack frames to be turned on. 386DDB_ENABLED!= grep DDB opt_ddb.h || true ; echo 387DTRACE_ENABLED!=grep KDTRACE_FRAME opt_kdtrace.h || true ; echo 388HWPMC_ENABLED!= grep HWPMC opt_hwpmc_hooks.h || true ; echo 389