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 49ELFDUMP?= elfdump 50NM?= nm 51OBJCOPY?= objcopy 52SIZE?= size 53 54.if defined(DEBUG) 55CTFFLAGS+= -g 56.endif 57.if ${MACHINE_CPUARCH} == "amd64" && ${COMPILER_TYPE} != "clang" 58_COPTFLAGS_EXTRA=-frename-registers 59.else 60_COPTFLAGS_EXTRA= 61.endif 62COPTFLAGS?=-O2 -pipe ${_COPTFLAGS_EXTRA} 63.if !empty(COPTFLAGS:M-O[23s]) && empty(COPTFLAGS:M-fno-strict-aliasing) 64COPTFLAGS+= -fno-strict-aliasing 65.endif 66.if !defined(NO_CPU_COPTFLAGS) 67COPTFLAGS+= ${_CPUCFLAGS} 68.endif 69NOSTDINC= -nostdinc 70 71INCLUDES= ${NOSTDINC} ${INCLMAGIC} -I. -I$S -I$S/contrib/ck/include 72 73CFLAGS= ${COPTFLAGS} ${DEBUG} 74CFLAGS+= ${INCLUDES} -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h 75CFLAGS_PARAM_INLINE_UNIT_GROWTH?=100 76CFLAGS_PARAM_LARGE_FUNCTION_GROWTH?=1000 77CFLAGS.gcc+= -fms-extensions -finline-limit=${INLINE_LIMIT} 78CFLAGS.gcc+= --param inline-unit-growth=${CFLAGS_PARAM_INLINE_UNIT_GROWTH} 79CFLAGS.gcc+= --param large-function-growth=${CFLAGS_PARAM_LARGE_FUNCTION_GROWTH} 80CFLAGS.gcc+= -fms-extensions 81.if defined(CFLAGS_ARCH_PARAMS) 82CFLAGS.gcc+=${CFLAGS_ARCH_PARAMS} 83.endif 84WERROR?= -Werror 85# The following should be removed no earlier than LLVM11 being imported into the 86# tree, to ensure we don't regress the build. LLVM11 and GCC10 will switch the 87# default over to -fno-common, making this redundant. 88CFLAGS+= -fno-common 89 90# XXX LOCORE means "don't declare C stuff" not "for locore.s". 91ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS} ${ASM_CFLAGS.${.IMPSRC:T}} 92 93COMPAT_FREEBSD32_ENABLED!= grep COMPAT_FREEBSD32 opt_global.h || true ; echo 94 95KASAN_ENABLED!= grep KASAN opt_global.h || true ; echo 96.if !empty(KASAN_ENABLED) 97SAN_CFLAGS+= -DSAN_NEEDS_INTERCEPTORS -DSAN_INTERCEPTOR_PREFIX=kasan \ 98 -fsanitize=kernel-address \ 99 -mllvm -asan-stack=true \ 100 -mllvm -asan-instrument-dynamic-allocas=true \ 101 -mllvm -asan-globals=true \ 102 -mllvm -asan-use-after-scope=true \ 103 -mllvm -asan-instrumentation-with-call-threshold=0 \ 104 -mllvm -asan-instrument-byval=false 105 106.if ${MACHINE_CPUARCH} == "aarch64" 107# KASAN/ARM64 TODO: -asan-mapping-offset is calculated from: 108# (VM_KERNEL_MIN_ADDRESS >> KASAN_SHADOW_SCALE_SHIFT) + $offset = KASAN_MIN_ADDRESS 109# 110# This is different than amd64, where we have a different 111# KASAN_MIN_ADDRESS, and this offset value should eventually be 112# upstreamed similar to: https://reviews.llvm.org/D98285 113# 114SAN_CFLAGS+= -mllvm -asan-mapping-offset=0xdfff208000000000 115.endif 116.endif 117 118KCSAN_ENABLED!= grep KCSAN opt_global.h || true ; echo 119.if !empty(KCSAN_ENABLED) 120SAN_CFLAGS+= -DSAN_NEEDS_INTERCEPTORS -DSAN_INTERCEPTOR_PREFIX=kcsan \ 121 -fsanitize=thread 122.endif 123 124KMSAN_ENABLED!= grep KMSAN opt_global.h || true ; echo 125.if !empty(KMSAN_ENABLED) 126SAN_CFLAGS+= -DSAN_NEEDS_INTERCEPTORS -DSAN_INTERCEPTOR_PREFIX=kmsan \ 127 -fsanitize=kernel-memory 128.endif 129 130KUBSAN_ENABLED!= grep KUBSAN opt_global.h || true ; echo 131.if !empty(KUBSAN_ENABLED) 132SAN_CFLAGS+= -fsanitize=undefined 133.endif 134 135COVERAGE_ENABLED!= grep COVERAGE opt_global.h || true ; echo 136.if !empty(COVERAGE_ENABLED) 137.if ${COMPILER_TYPE} == "clang" || \ 138 (${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} >= 80100) 139SAN_CFLAGS+= -fsanitize-coverage=trace-pc,trace-cmp 140.else 141SAN_CFLAGS+= -fsanitize-coverage=trace-pc 142.endif 143.endif 144 145CFLAGS+= ${SAN_CFLAGS} 146 147GCOV_ENABLED!= grep GCOV opt_global.h || true ; echo 148.if !empty(GCOV_ENABLED) 149.if ${COMPILER_TYPE} == "gcc" 150GCOV_CFLAGS+= -fprofile-arcs -ftest-coverage 151.endif 152.endif 153 154CFLAGS+= ${GCOV_CFLAGS} 155 156# Put configuration-specific C flags last so that they can override 157# the others. 158CFLAGS+= ${CONF_CFLAGS} 159 160.if defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mbuild-id} 161LDFLAGS+= --build-id=sha1 162.endif 163 164.if (${MACHINE_CPUARCH} == "aarch64" || ${MACHINE_CPUARCH} == "amd64" || \ 165 ${MACHINE_CPUARCH} == "i386" || ${MACHINE} == "powerpc") && \ 166 defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mifunc} == "" && \ 167 !make(install) 168.error amd64/arm64/i386/ppc* kernel requires linker ifunc support 169.endif 170.if ${MACHINE_CPUARCH} == "amd64" 171LDFLAGS+= -z max-page-size=2097152 172.if ${LINKER_TYPE} != "lld" 173LDFLAGS+= -z common-page-size=4096 174.else 175.if defined(LINKER_FEATURES) && !${LINKER_FEATURES:Mifunc-noplt} 176.warning "Linker ${LD} does not support -z ifunc-noplt -> ifunc calls are unoptimized." 177.else 178LDFLAGS+= -z notext -z ifunc-noplt 179.endif 180.endif 181.endif # ${MACHINE_CPUARCH} == "amd64" 182 183.if ${MACHINE_CPUARCH} == "riscv" 184# Hack: Work around undefined weak symbols being out of range when linking with 185# LLD (address is a PC-relative calculation, and BFD works around this by 186# rewriting the instructions to generate an absolute address of 0); -fPIE 187# avoids this since it uses the GOT for all extern symbols, which is overly 188# inefficient for us. Drop once undefined weak symbols work with medany. 189.if ${LINKER_TYPE} == "lld" 190CFLAGS+= -fPIE 191.endif 192.endif 193 194NORMAL_C= ${CC} -c ${CFLAGS} ${WERROR} ${.IMPSRC} 195NORMAL_S= ${CC:N${CCACHE_BIN}} -c ${ASM_CFLAGS} ${WERROR} ${.IMPSRC} 196NORMAL_C_NOWERROR= ${CC} -c ${CFLAGS} ${.IMPSRC} 197 198NORMAL_M= ${AWK} -f $S/tools/makeobjops.awk ${.IMPSRC} -c ; \ 199 ${CC} -c ${CFLAGS} ${WERROR} ${.PREFIX}.c 200 201NORMAL_FW= uudecode -o ${.TARGET} ${.ALLSRC} 202NORMAL_FWO= ${CC:N${CCACHE_BIN}} -c ${ASM_CFLAGS} ${WERROR} -o ${.TARGET} \ 203 $S/kern/firmw.S -DFIRMW_FILE="${.ALLSRC:M*.fw}" \ 204 -DFIRMW_SYMBOL="${.ALLSRC:M*.fw:C/[-.\/]/_/g}" 205 206# for ZSTD in the kernel (include zstd/lib/freebsd before other CFLAGS) 207ZSTD_C= ${CC} -c -DZSTD_HEAPMODE=1 -I$S/contrib/zstd/lib/freebsd ${CFLAGS} \ 208 -I$S/contrib/zstd/lib -I$S/contrib/zstd/lib/common ${WERROR} \ 209 -Wno-missing-prototypes -U__BMI__ -DZSTD_NO_INTRINSICS ${.IMPSRC} 210# https://github.com/facebook/zstd/commit/812e8f2a [zstd 1.4.1] 211# "Note that [GCC] autovectorization still does not do a good job on the 212# optimized version, so it's turned off via attribute and flag. I found 213# that neither attribute nor command-line flag were entirely successful in 214# turning off vectorization, which is why there were both." 215.if ${COMPILER_TYPE} == "gcc" 216ZSTD_DECOMPRESS_BLOCK_FLAGS= -fno-tree-vectorize 217.endif 218 219ZINCDIR=$S/contrib/openzfs/include 220# Common for dtrace / zfs 221CDDL_CFLAGS= \ 222 -DFREEBSD_NAMECACHE \ 223 -D_SYS_VMEM_H_ \ 224 -D__KERNEL \ 225 -D__KERNEL__ \ 226 -nostdinc \ 227 -include $S/modules/zfs/static_ccompile.h \ 228 -I${ZINCDIR} \ 229 -I${ZINCDIR}/os/freebsd \ 230 -I${ZINCDIR}/os/freebsd/spl \ 231 -I${ZINCDIR}/os/freebsd/zfs \ 232 -I$S/modules/zfs \ 233 -I$S/contrib/openzfs/module/zstd/include \ 234 ${CFLAGS} \ 235 -Wno-cast-qual \ 236 -Wno-duplicate-decl-specifier \ 237 -Wno-missing-braces \ 238 -Wno-missing-prototypes \ 239 -Wno-parentheses \ 240 -Wno-pointer-arith \ 241 -Wno-strict-prototypes \ 242 -Wno-switch \ 243 -Wno-undef \ 244 -Wno-uninitialized \ 245 -Wno-unknown-pragmas \ 246 -Wno-unused \ 247 -include ${ZINCDIR}/os/freebsd/spl/sys/ccompile.h \ 248 -I$S/cddl/contrib/opensolaris/uts/common \ 249 -I$S -I$S/cddl/compat/opensolaris 250CDDL_C= ${CC} -c ${CDDL_CFLAGS} ${WERROR} ${.IMPSRC} 251 252# Special flags for managing the compat compiles for ZFS 253ZFS_CFLAGS+= -I$S/contrib/openzfs/module/icp/include \ 254 ${CDDL_CFLAGS} -DBUILDING_ZFS -DHAVE_UIO_ZEROCOPY \ 255 -DWITH_NETDUMP -D__KERNEL__ -D_SYS_CONDVAR_H_ -DSMP \ 256 -DIN_FREEBSD_BASE 257 258.if ${MACHINE_ARCH} == "amd64" 259ZFS_CFLAGS+= -D__x86_64 -DHAVE_SSE2 -DHAVE_SSSE3 -DHAVE_SSE4_1 -DHAVE_SSE4_2 \ 260 -DHAVE_AVX -DHAVE_AVX2 -DHAVE_AVX512F -DHAVE_AVX512VL -DHAVE_AVX512BW 261.endif 262 263.if ${MACHINE_ARCH} == "i386" || ${MACHINE_ARCH} == "powerpc" || \ 264 ${MACHINE_ARCH} == "powerpcspe" || ${MACHINE_ARCH} == "arm" 265ZFS_CFLAGS+= -DBITS_PER_LONG=32 266.else 267ZFS_CFLAGS+= -DBITS_PER_LONG=64 268.endif 269 270 271ZFS_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${ZFS_CFLAGS} 272ZFS_C= ${CC} -c ${ZFS_CFLAGS} ${WERROR} ${.IMPSRC} 273ZFS_RPC_C= ${CC} -c ${ZFS_CFLAGS} -DHAVE_RPC_TYPES ${WERROR} ${.IMPSRC} 274ZFS_S= ${CC} -c ${ZFS_ASM_CFLAGS} ${WERROR} ${.IMPSRC} 275 276# ATH driver 277ATH_CFLAGS= -I${SRCTOP}/sys/dev/ath ${NO_WUNUSED_BUT_SET_VARIABLE} 278ATH_C= ${CC} -c ${CFLAGS} ${WERROR} ${ATH_CFLAGS} ${.IMPSRC} 279 280# Special flags for managing the compat compiles for DTrace 281DTRACE_CFLAGS= -DBUILDING_DTRACE ${CDDL_CFLAGS} -I$S/cddl/dev/dtrace -I$S/cddl/dev/dtrace/${MACHINE_CPUARCH} 282.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386" 283DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/intel -I$S/cddl/dev/dtrace/x86 284.endif 285DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/common/util -I$S -DDIS_MEM -DSMP -I$S/cddl/compat/opensolaris 286DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/common 287DTRACE_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${DTRACE_CFLAGS} 288DTRACE_C= ${CC} -c ${DTRACE_CFLAGS} ${WERROR} ${.IMPSRC} 289DTRACE_S= ${CC} -c ${DTRACE_ASM_CFLAGS} ${WERROR} ${.IMPSRC} 290 291# zlib code supports systems that are quite old, but will fix this issue once C2x gets radified. 292# see https://github.com/madler/zlib/issues/633 for details 293ZLIB_CFLAGS= -Wno-cast-qual ${NO_WDEPRECATED_NON_PROTOTYPE} ${NO_WSTRICT_PROTOTYPES} 294ZLIB_C= ${CC} -c ${CFLAGS} ${WERROR} ${ZLIB_CFLAGS} ${.IMPSRC} 295 296# Special flags for managing the compat compiles for DTrace/FBT 297FBT_CFLAGS= -DBUILDING_DTRACE -nostdinc -I$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 298.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386" 299FBT_CFLAGS+= -I$S/cddl/dev/fbt/x86 300.endif 301FBT_C= ${CC} -c ${FBT_CFLAGS} ${WERROR} ${.IMPSRC} 302 303.if ${MK_CTF} != "no" 304NORMAL_CTFCONVERT= ${CTFCONVERT} ${CTFFLAGS} ${.TARGET} 305.elif ${MAKE_VERSION} >= 5201111300 306NORMAL_CTFCONVERT= 307.else 308NORMAL_CTFCONVERT= @: 309.endif 310 311# Linux Kernel Programming Interface C-flags 312LINUXKPI_INCLUDES= -I$S/compat/linuxkpi/common/include \ 313 -I$S/compat/linuxkpi/dummy/include 314LINUXKPI_C= ${NORMAL_C} ${LINUXKPI_INCLUDES} 315 316# Infiniband C flags. Correct include paths and omit errors that linux 317# does not honor. 318OFEDINCLUDES= -I$S/ofed/include -I$S/ofed/include/uapi ${LINUXKPI_INCLUDES} 319OFEDNOERR= -Wno-cast-qual -Wno-pointer-arith 320OFEDCFLAGS= ${CFLAGS:N-I*} -DCONFIG_INFINIBAND_USER_MEM \ 321 ${OFEDINCLUDES} ${CFLAGS:M-I*} ${OFEDNOERR} 322OFED_C_NOIMP= ${CC} -c -o ${.TARGET} ${OFEDCFLAGS} ${WERROR} 323OFED_C= ${OFED_C_NOIMP} ${.IMPSRC} 324 325# mlxfw C flags. 326MLXFW_C= ${OFED_C_NOIMP} \ 327 -I${SRCTOP}/sys/contrib/xz-embedded/freebsd \ 328 -I${SRCTOP}/sys/contrib/xz-embedded/linux/lib/xz \ 329 ${.IMPSRC} 330 331GEN_CFILES= $S/$M/$M/genassym.c ${MFILES:T:S/.m$/.c/} 332SYSTEM_CFILES= config.c env.c hints.c vnode_if.c 333SYSTEM_DEP= Makefile ${SYSTEM_OBJS} 334SYSTEM_OBJS= locore.o ${MDOBJS} ${OBJS} 335SYSTEM_OBJS+= ${SYSTEM_CFILES:.c=.o} 336SYSTEM_OBJS+= force-dynamic-hack.pico 337 338KEYMAP=kbdcontrol -P ${SRCTOP}/share/vt/keymaps -P ${SRCTOP}/share/syscons/keymaps 339KEYMAP_FIX=sed -e 's/^static keymap_t.* = /static keymap_t key_map = /' -e 's/^static accentmap_t.* = /static accentmap_t accent_map = /' 340 341MD_ROOT_SIZE_CONFIGURED!= grep MD_ROOT_SIZE opt_md.h || true ; echo 342.if ${MFS_IMAGE:Uno} != "no" 343.if empty(MD_ROOT_SIZE_CONFIGURED) 344SYSTEM_OBJS+= embedfs_${MFS_IMAGE:T:R}.o 345.endif 346.endif 347SYSTEM_LD_BASECMD= \ 348 ${LD} -m ${LD_EMULATION} -Bdynamic -T ${LDSCRIPT} ${_LDFLAGS} \ 349 --no-warn-mismatch --warn-common --export-dynamic \ 350 --dynamic-linker /red/herring -X 351SYSTEM_LD= @${SYSTEM_LD_BASECMD} -o ${.TARGET} ${SYSTEM_OBJS} vers.o 352SYSTEM_LD_TAIL= @${SIZE} ${.TARGET} ; chmod 755 ${.TARGET} 353SYSTEM_DEP+= ${LDSCRIPT} 354 355# Calculate path for .m files early, if needed. 356.if !defined(NO_MODULES) && !defined(__MPATH) && !make(install) && \ 357 (empty(.MAKEFLAGS:M-V) || defined(NO_SKIP_MPATH)) 358__MPATH!=find ${S:tA}/ -name \*_if.m 359.endif 360 361# MKMODULESENV is set here so that port makefiles can augment 362# them. 363 364MKMODULESENV+= MAKEOBJDIRPREFIX=${.OBJDIR}/modules KMODDIR=${KODIR} 365MKMODULESENV+= MACHINE_CPUARCH=${MACHINE_CPUARCH} 366MKMODULESENV+= MACHINE=${MACHINE} MACHINE_ARCH=${MACHINE_ARCH} 367MKMODULESENV+= MODULES_EXTRA="${MODULES_EXTRA}" WITHOUT_MODULES="${WITHOUT_MODULES}" 368MKMODULESENV+= ARCH_FLAGS="${ARCH_FLAGS}" 369.if (${KERN_IDENT} == LINT) 370MKMODULESENV+= ALL_MODULES=LINT 371.endif 372.if defined(MODULES_OVERRIDE) 373MKMODULESENV+= MODULES_OVERRIDE="${MODULES_OVERRIDE}" 374.endif 375.if defined(DEBUG) 376MKMODULESENV+= DEBUG_FLAGS="${DEBUG}" 377.endif 378.if !defined(NO_MODULES) 379MKMODULESENV+= __MPATH="${__MPATH}" 380.endif 381 382# Detect kernel config options that force stack frames to be turned on. 383DDB_ENABLED!= grep DDB opt_ddb.h || true ; echo 384DTRACE_ENABLED!=grep KDTRACE_FRAME opt_kdtrace.h || true ; echo 385HWPMC_ENABLED!= grep HWPMC opt_hwpmc_hooks.h || true ; echo 386