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.elif ${MACHINE_CPUARCH} == "amd64" && \ 115 ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 180000 116# Work around https://github.com/llvm/llvm-project/issues/87923, which leads to 117# an assertion failure compiling dtrace.c with asan enabled. 118SAN_CFLAGS+= -mllvm -asan-use-stack-safety=0 119.endif 120.endif 121 122KCSAN_ENABLED!= grep KCSAN opt_global.h || true ; echo 123.if !empty(KCSAN_ENABLED) 124SAN_CFLAGS+= -DSAN_NEEDS_INTERCEPTORS -DSAN_INTERCEPTOR_PREFIX=kcsan \ 125 -fsanitize=thread 126.endif 127 128KMSAN_ENABLED!= grep KMSAN opt_global.h || true ; echo 129.if !empty(KMSAN_ENABLED) 130# Disable -fno-sanitize-memory-param-retval until interceptors have been 131# updated to work properly with it. 132SAN_CFLAGS+= -DSAN_NEEDS_INTERCEPTORS -DSAN_INTERCEPTOR_PREFIX=kmsan \ 133 -fsanitize=kernel-memory 134.if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 160000 135SAN_CFLAGS+= -fno-sanitize-memory-param-retval 136.endif 137.endif 138 139KUBSAN_ENABLED!= grep KUBSAN opt_global.h || true ; echo 140.if !empty(KUBSAN_ENABLED) 141SAN_CFLAGS+= -fsanitize=undefined 142.endif 143 144COVERAGE_ENABLED!= grep COVERAGE opt_global.h || true ; echo 145.if !empty(COVERAGE_ENABLED) 146.if ${COMPILER_TYPE} == "clang" || \ 147 (${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} >= 80100) 148SAN_CFLAGS+= -fsanitize-coverage=trace-pc,trace-cmp 149.else 150SAN_CFLAGS+= -fsanitize-coverage=trace-pc 151.endif 152.endif 153 154CFLAGS+= ${SAN_CFLAGS} 155 156GCOV_ENABLED!= grep GCOV opt_global.h || true ; echo 157.if !empty(GCOV_ENABLED) 158.if ${COMPILER_TYPE} == "gcc" 159GCOV_CFLAGS+= -fprofile-arcs -ftest-coverage 160.endif 161.endif 162 163CFLAGS+= ${GCOV_CFLAGS} 164 165# Put configuration-specific C flags last so that they can override 166# the others. 167CFLAGS+= ${CONF_CFLAGS} 168 169.if defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mbuild-id} 170LDFLAGS+= --build-id=sha1 171.endif 172 173.if (${MACHINE_CPUARCH} == "aarch64" || ${MACHINE_CPUARCH} == "amd64" || \ 174 ${MACHINE_CPUARCH} == "i386" || ${MACHINE} == "powerpc") && \ 175 defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mifunc} == "" && \ 176 !make(install) 177.error amd64/arm64/i386/ppc* kernel requires linker ifunc support 178.endif 179.if ${MACHINE_CPUARCH} == "amd64" 180LDFLAGS+= -z max-page-size=2097152 181.if ${LINKER_TYPE} != "lld" 182LDFLAGS+= -z common-page-size=4096 183.else 184.if defined(LINKER_FEATURES) && !${LINKER_FEATURES:Mifunc-noplt} 185.warning "Linker ${LD} does not support -z ifunc-noplt -> ifunc calls are unoptimized." 186.else 187LDFLAGS+= -z notext -z ifunc-noplt 188.endif 189.endif 190.endif # ${MACHINE_CPUARCH} == "amd64" 191 192.if ${MACHINE_CPUARCH} == "riscv" 193# Hack: Work around undefined weak symbols being out of range when linking with 194# LLD (address is a PC-relative calculation, and BFD works around this by 195# rewriting the instructions to generate an absolute address of 0); -fPIE 196# avoids this since it uses the GOT for all extern symbols, which is overly 197# inefficient for us. Drop once undefined weak symbols work with medany. 198.if ${LINKER_TYPE} == "lld" 199CFLAGS+= -fPIE 200.endif 201.endif 202 203NORMAL_C= ${CC} -c ${CFLAGS} ${WERROR} ${.IMPSRC} 204NORMAL_S= ${CC:N${CCACHE_BIN}} -c ${ASM_CFLAGS} ${WERROR} ${.IMPSRC} 205NORMAL_C_NOWERROR= ${CC} -c ${CFLAGS} ${.IMPSRC} 206 207NORMAL_M= ${AWK} -f $S/tools/makeobjops.awk ${.IMPSRC} -c ; \ 208 ${CC} -c ${CFLAGS} ${WERROR} ${.PREFIX}.c 209 210NORMAL_FW= uudecode -o ${.TARGET} ${.ALLSRC} 211NORMAL_FWO= ${CC:N${CCACHE_BIN}} -c ${ASM_CFLAGS} ${WERROR} -o ${.TARGET} \ 212 $S/kern/firmw.S -DFIRMW_FILE=\""${.ALLSRC:M*.fw}"\" \ 213 -DFIRMW_SYMBOL="${.ALLSRC:M*.fw:C/[-.\/]/_/g}" 214 215# for ZSTD in the kernel (include zstd/lib/freebsd before other CFLAGS) 216ZSTD_C= ${CC} -c -DZSTD_HEAPMODE=1 -I$S/contrib/zstd/lib/freebsd ${CFLAGS} \ 217 -I$S/contrib/zstd/lib -I$S/contrib/zstd/lib/common ${WERROR} \ 218 -Wno-missing-prototypes -U__BMI__ -DZSTD_NO_INTRINSICS ${.IMPSRC} 219# https://github.com/facebook/zstd/commit/812e8f2a [zstd 1.4.1] 220# "Note that [GCC] autovectorization still does not do a good job on the 221# optimized version, so it's turned off via attribute and flag. I found 222# that neither attribute nor command-line flag were entirely successful in 223# turning off vectorization, which is why there were both." 224.if ${COMPILER_TYPE} == "gcc" 225ZSTD_DECOMPRESS_BLOCK_FLAGS= -fno-tree-vectorize 226.endif 227 228ZINCDIR=$S/contrib/openzfs/include 229# Common for dtrace / zfs 230CDDL_CFLAGS= \ 231 -DFREEBSD_NAMECACHE \ 232 -D_SYS_VMEM_H_ \ 233 -D__KERNEL \ 234 -D__KERNEL__ \ 235 -nostdinc \ 236 -include $S/modules/zfs/static_ccompile.h \ 237 -I${ZINCDIR} \ 238 -I${ZINCDIR}/os/freebsd \ 239 -I${ZINCDIR}/os/freebsd/spl \ 240 -I${ZINCDIR}/os/freebsd/zfs \ 241 -I$S/modules/zfs \ 242 -I$S/contrib/openzfs/module/zstd/include \ 243 ${CFLAGS} \ 244 -Wno-cast-qual \ 245 -Wno-duplicate-decl-specifier \ 246 -Wno-missing-braces \ 247 -Wno-missing-prototypes \ 248 -Wno-parentheses \ 249 -Wno-pointer-arith \ 250 -Wno-strict-prototypes \ 251 -Wno-switch \ 252 -Wno-undef \ 253 -Wno-uninitialized \ 254 -Wno-unknown-pragmas \ 255 -Wno-unused \ 256 -include ${ZINCDIR}/os/freebsd/spl/sys/ccompile.h \ 257 -I$S/cddl/contrib/opensolaris/uts/common \ 258 -I$S -I$S/cddl/compat/opensolaris 259CDDL_C= ${CC} -c ${CDDL_CFLAGS} ${WERROR} ${.IMPSRC} 260 261# Special flags for managing the compat compiles for ZFS 262ZFS_CFLAGS+= -I$S/contrib/openzfs/module/icp/include \ 263 ${CDDL_CFLAGS} -DBUILDING_ZFS -DHAVE_UIO_ZEROCOPY \ 264 -DWITH_NETDUMP -D__KERNEL__ -D_SYS_CONDVAR_H_ -DSMP 265 266.if ${MACHINE_ARCH} == "amd64" 267ZFS_CFLAGS+= -D__x86_64 -DHAVE_SSE2 -DHAVE_SSSE3 -DHAVE_SSE4_1 -DHAVE_SSE4_2 \ 268 -DHAVE_AVX -DHAVE_AVX2 -DHAVE_AVX512F -DHAVE_AVX512VL -DHAVE_AVX512BW 269.endif 270 271.if ${MACHINE_ARCH} == "i386" || ${MACHINE_ARCH} == "powerpc" || \ 272 ${MACHINE_ARCH} == "powerpcspe" || ${MACHINE_ARCH} == "arm" 273ZFS_CFLAGS+= -DBITS_PER_LONG=32 274.else 275ZFS_CFLAGS+= -DBITS_PER_LONG=64 276.endif 277 278 279ZFS_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${ZFS_CFLAGS} 280ZFS_C= ${CC} -c ${ZFS_CFLAGS} ${WERROR} ${.IMPSRC} 281ZFS_RPC_C= ${CC} -c ${ZFS_CFLAGS} -DHAVE_RPC_TYPES ${WERROR} ${.IMPSRC} 282ZFS_S= ${CC} -c ${ZFS_ASM_CFLAGS} ${WERROR} ${.IMPSRC} 283 284# ATH driver 285ATH_CFLAGS= -I${SRCTOP}/sys/dev/ath ${NO_WUNUSED_BUT_SET_VARIABLE} 286ATH_C= ${CC} -c ${CFLAGS} ${WERROR} ${ATH_CFLAGS} ${.IMPSRC} 287 288# Special flags for managing the compat compiles for DTrace 289DTRACE_CFLAGS= -DBUILDING_DTRACE ${CDDL_CFLAGS} -I$S/cddl/dev/dtrace -I$S/cddl/dev/dtrace/${MACHINE_CPUARCH} 290.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386" 291DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/intel -I$S/cddl/dev/dtrace/x86 292.endif 293DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/common/util -I$S -DDIS_MEM -DSMP -I$S/cddl/compat/opensolaris 294DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/common 295DTRACE_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${DTRACE_CFLAGS} 296DTRACE_C= ${CC} -c ${DTRACE_CFLAGS} ${WERROR} ${.IMPSRC} 297DTRACE_S= ${CC} -c ${DTRACE_ASM_CFLAGS} ${WERROR} ${.IMPSRC} 298 299# zlib code supports systems that are quite old, but will fix this issue once C2x gets radified. 300# see https://github.com/madler/zlib/issues/633 for details 301ZLIB_CFLAGS= -Wno-cast-qual ${NO_WDEPRECATED_NON_PROTOTYPE} ${NO_WSTRICT_PROTOTYPES} 302ZLIB_C= ${CC} -c ${CFLAGS} ${WERROR} ${ZLIB_CFLAGS} ${.IMPSRC} 303 304# Special flags for managing the compat compiles for DTrace/FBT 305FBT_CFLAGS= -DBUILDING_DTRACE -nostdinc -I$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 306.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386" 307FBT_CFLAGS+= -I$S/cddl/dev/fbt/x86 308.endif 309FBT_C= ${CC} -c ${FBT_CFLAGS} ${WERROR} ${.IMPSRC} 310 311.if ${MK_CTF} != "no" 312NORMAL_CTFCONVERT= ${CTFCONVERT} ${CTFFLAGS} ${.TARGET} 313.elif ${MAKE_VERSION} >= 5201111300 314NORMAL_CTFCONVERT= 315.else 316NORMAL_CTFCONVERT= @: 317.endif 318 319# Linux Kernel Programming Interface C-flags 320LINUXKPI_INCLUDES= -I$S/compat/linuxkpi/common/include \ 321 -I$S/compat/linuxkpi/dummy/include 322LINUXKPI_C= ${NORMAL_C} ${LINUXKPI_INCLUDES} 323 324# Infiniband C flags. Correct include paths and omit errors that linux 325# does not honor. 326OFEDINCLUDES= -I$S/ofed/include -I$S/ofed/include/uapi ${LINUXKPI_INCLUDES} 327OFEDNOERR= -Wno-cast-qual -Wno-pointer-arith 328OFEDCFLAGS= ${CFLAGS:N-I*} -DCONFIG_INFINIBAND_USER_MEM \ 329 ${OFEDINCLUDES} ${CFLAGS:M-I*} ${OFEDNOERR} 330OFED_C_NOIMP= ${CC} -c -o ${.TARGET} ${OFEDCFLAGS} ${WERROR} 331OFED_C= ${OFED_C_NOIMP} ${.IMPSRC} 332 333# mlxfw C flags. 334MLXFW_C= ${OFED_C_NOIMP} \ 335 -I${SRCTOP}/sys/contrib/xz-embedded/freebsd \ 336 -I${SRCTOP}/sys/contrib/xz-embedded/linux/lib/xz \ 337 ${.IMPSRC} 338 339GEN_CFILES= $S/$M/$M/genassym.c ${MFILES:T:S/.m$/.c/} 340SYSTEM_CFILES= config.c env.c hints.c vnode_if.c 341SYSTEM_DEP= Makefile ${SYSTEM_OBJS} 342SYSTEM_OBJS= locore.o ${MDOBJS} ${OBJS} 343SYSTEM_OBJS+= ${SYSTEM_CFILES:.c=.o} 344SYSTEM_OBJS+= force-dynamic-hack.pico 345 346KEYMAP=kbdcontrol -P ${SRCTOP}/share/vt/keymaps -P ${SRCTOP}/share/syscons/keymaps 347KEYMAP_FIX=sed -e 's/^static keymap_t.* = /static keymap_t key_map = /' -e 's/^static accentmap_t.* = /static accentmap_t accent_map = /' 348 349MD_ROOT_SIZE_CONFIGURED!= grep MD_ROOT_SIZE opt_md.h || true ; echo 350.if ${MFS_IMAGE:Uno} != "no" 351.if empty(MD_ROOT_SIZE_CONFIGURED) 352SYSTEM_OBJS+= embedfs_${MFS_IMAGE:T:R}.o 353.endif 354.endif 355SYSTEM_LD_BASECMD= \ 356 ${LD} -m ${LD_EMULATION} -Bdynamic -T ${LDSCRIPT} ${_LDFLAGS} \ 357 --no-warn-mismatch --warn-common --export-dynamic \ 358 --dynamic-linker /red/herring -X 359SYSTEM_LD= @${SYSTEM_LD_BASECMD} -o ${.TARGET} ${SYSTEM_OBJS} vers.o 360SYSTEM_LD_TAIL= @${SIZE} ${.TARGET} ; chmod 755 ${.TARGET} 361SYSTEM_DEP+= ${LDSCRIPT} 362 363# Calculate path for .m files early, if needed. 364.if !defined(NO_MODULES) && !defined(__MPATH) && !make(install) && \ 365 (empty(.MAKEFLAGS:M-V) || defined(NO_SKIP_MPATH)) 366__MPATH!=find ${S:tA}/ -name \*_if.m 367.endif 368 369# MKMODULESENV is set here so that port makefiles can augment 370# them. 371 372MKMODULESENV+= MAKEOBJDIRPREFIX=${.OBJDIR}/modules KMODDIR=${KODIR} 373MKMODULESENV+= MACHINE_CPUARCH=${MACHINE_CPUARCH} 374MKMODULESENV+= MACHINE=${MACHINE} MACHINE_ARCH=${MACHINE_ARCH} 375MKMODULESENV+= MODULES_EXTRA="${MODULES_EXTRA}" WITHOUT_MODULES="${WITHOUT_MODULES}" 376MKMODULESENV+= ARCH_FLAGS="${ARCH_FLAGS}" 377.if (${KERN_IDENT} == LINT) 378MKMODULESENV+= ALL_MODULES=LINT 379.endif 380.if defined(MODULES_OVERRIDE) 381MKMODULESENV+= MODULES_OVERRIDE="${MODULES_OVERRIDE}" 382.endif 383.if defined(DEBUG) 384MKMODULESENV+= DEBUG_FLAGS="${DEBUG}" 385.endif 386.if !defined(NO_MODULES) 387MKMODULESENV+= __MPATH="${__MPATH}" 388.endif 389 390# Detect kernel config options that force stack frames to be turned on. 391DDB_ENABLED!= grep DDB opt_ddb.h || true ; echo 392DTRACE_ENABLED!=grep KDTRACE_FRAME opt_kdtrace.h || true ; echo 393HWPMC_ENABLED!= grep HWPMC opt_hwpmc_hooks.h || true ; echo 394