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_MINUS_O= -O 55CTFFLAGS+= -g 56.else 57.if ${MACHINE_CPUARCH} == "powerpc" 58_MINUS_O= -O # gcc miscompiles some code at -O2 59.else 60_MINUS_O= -O2 61.endif 62.endif 63.if ${MACHINE_CPUARCH} == "amd64" 64.if ${COMPILER_TYPE} == "clang" 65COPTFLAGS?=-O2 -pipe 66.else 67COPTFLAGS?=-O2 -frename-registers -pipe 68.endif 69.else 70COPTFLAGS?=${_MINUS_O} -pipe 71.endif 72.if !empty(COPTFLAGS:M-O[23s]) && empty(COPTFLAGS:M-fno-strict-aliasing) 73COPTFLAGS+= -fno-strict-aliasing 74.endif 75.if !defined(NO_CPU_COPTFLAGS) 76COPTFLAGS+= ${_CPUCFLAGS} 77.endif 78NOSTDINC= -nostdinc 79 80INCLUDES= ${NOSTDINC} ${INCLMAGIC} -I. -I$S -I$S/contrib/ck/include 81 82CFLAGS= ${COPTFLAGS} ${DEBUG} 83CFLAGS+= ${INCLUDES} -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h 84CFLAGS_PARAM_INLINE_UNIT_GROWTH?=100 85CFLAGS_PARAM_LARGE_FUNCTION_GROWTH?=1000 86.if ${MACHINE_CPUARCH} == "mips" 87CFLAGS_ARCH_PARAMS?=--param max-inline-insns-single=1000 -DMACHINE_ARCH='"${MACHINE_ARCH}"' 88.endif 89CFLAGS.gcc+= -fms-extensions -finline-limit=${INLINE_LIMIT} 90CFLAGS.gcc+= --param inline-unit-growth=${CFLAGS_PARAM_INLINE_UNIT_GROWTH} 91CFLAGS.gcc+= --param large-function-growth=${CFLAGS_PARAM_LARGE_FUNCTION_GROWTH} 92CFLAGS.gcc+= -fms-extensions 93.if defined(CFLAGS_ARCH_PARAMS) 94CFLAGS.gcc+=${CFLAGS_ARCH_PARAMS} 95.endif 96WERROR?= -Werror 97# The following should be removed no earlier than LLVM11 being imported into the 98# tree, to ensure we don't regress the build. LLVM11 and GCC10 will switch the 99# default over to -fno-common, making this redundant. 100CFLAGS+= -fno-common 101 102# XXX LOCORE means "don't declare C stuff" not "for locore.s". 103ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS} ${ASM_CFLAGS.${.IMPSRC:T}} 104 105.if defined(PROFLEVEL) && ${PROFLEVEL} >= 1 106CFLAGS+= -DGPROF 107CFLAGS.gcc+= -falign-functions=16 108.if ${PROFLEVEL} >= 2 109CFLAGS+= -DGPROF4 -DGUPROF 110PROF= -pg 111.if ${COMPILER_TYPE} == "gcc" 112PROF+= -mprofiler-epilogue 113.endif 114.else 115PROF= -pg 116.endif 117.endif 118DEFINED_PROF= ${PROF} 119 120KCSAN_ENABLED!= grep KCSAN opt_global.h || true ; echo 121.if !empty(KCSAN_ENABLED) 122SAN_CFLAGS+= -fsanitize=thread 123.endif 124 125KUBSAN_ENABLED!= grep KUBSAN opt_global.h || true ; echo 126.if !empty(KUBSAN_ENABLED) 127SAN_CFLAGS+= -fsanitize=undefined 128.endif 129 130COVERAGE_ENABLED!= grep COVERAGE opt_global.h || true ; echo 131.if !empty(COVERAGE_ENABLED) 132.if ${COMPILER_TYPE} == "clang" || \ 133 (${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} >= 80100) 134SAN_CFLAGS+= -fsanitize-coverage=trace-pc,trace-cmp 135.else 136SAN_CFLAGS+= -fsanitize-coverage=trace-pc 137.endif 138.endif 139 140CFLAGS+= ${SAN_CFLAGS} 141 142GCOV_ENABLED!= grep GCOV opt_global.h || true ; echo 143.if !empty(GCOV_ENABLED) 144.if ${COMPILER_TYPE} == "gcc" 145GCOV_CFLAGS+= -fprofile-arcs -ftest-coverage 146.endif 147.endif 148 149CFLAGS+= ${GCOV_CFLAGS} 150 151# Put configuration-specific C flags last (except for ${PROF}) so that they 152# can override the others. 153CFLAGS+= ${CONF_CFLAGS} 154 155.if defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mbuild-id} 156LDFLAGS+= --build-id=sha1 157.endif 158 159.if (${MACHINE_CPUARCH} == "aarch64" || ${MACHINE_CPUARCH} == "amd64" || \ 160 ${MACHINE_CPUARCH} == "i386" || ${MACHINE} == "powerpc") && \ 161 defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mifunc} == "" 162.error amd64/arm64/i386/ppc* kernel requires linker ifunc support 163.endif 164.if ${MACHINE_CPUARCH} == "amd64" 165LDFLAGS+= -z max-page-size=2097152 166.if ${LINKER_TYPE} != "lld" 167LDFLAGS+= -z common-page-size=4096 168.else 169.if defined(LINKER_FEATURES) && !${LINKER_FEATURES:Mifunc-noplt} 170.warning "Linker ${LD} does not support -z ifunc-noplt -> ifunc calls are unoptimized." 171.else 172LDFLAGS+= -z notext -z ifunc-noplt 173.endif 174.endif 175.endif # ${MACHINE_CPUARCH} == "amd64" 176 177.if ${MACHINE_CPUARCH} == "riscv" 178# Hack: Work around undefined weak symbols being out of range when linking with 179# LLD (address is a PC-relative calculation, and BFD works around this by 180# rewriting the instructions to generate an absolute address of 0); -fPIE 181# avoids this since it uses the GOT for all extern symbols, which is overly 182# inefficient for us. Drop once undefined weak symbols work with medany. 183.if ${LINKER_TYPE} == "lld" 184CFLAGS+= -fPIE 185.endif 186.endif 187 188NORMAL_C= ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.IMPSRC} 189NORMAL_S= ${CC:N${CCACHE_BIN}} -c ${ASM_CFLAGS} ${WERROR} ${.IMPSRC} 190PROFILE_C= ${CC} -c ${CFLAGS} ${WERROR} ${.IMPSRC} 191NORMAL_C_NOWERROR= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC} 192 193NORMAL_M= ${AWK} -f $S/tools/makeobjops.awk ${.IMPSRC} -c ; \ 194 ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.PREFIX}.c 195 196NORMAL_FW= uudecode -o ${.TARGET} ${.ALLSRC} 197NORMAL_FWO= ${LD} -b binary --no-warn-mismatch -d -warn-common -r \ 198 -m ${LD_EMULATION} -o ${.TARGET} ${.ALLSRC:M*.fw} 199 200# for ZSTD in the kernel (include zstd/lib/freebsd before other CFLAGS) 201ZSTD_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} 202# https://github.com/facebook/zstd/commit/812e8f2a [zstd 1.4.1] 203# "Note that [GCC] autovectorization still does not do a good job on the 204# optimized version, so it's turned off via attribute and flag. I found 205# that neither attribute nor command-line flag were entirely successful in 206# turning off vectorization, which is why there were both." 207.if ${COMPILER_TYPE} == "gcc" 208ZSTD_DECOMPRESS_BLOCK_FLAGS= -fno-tree-vectorize 209.endif 210 211ZINCDIR=$S/contrib/openzfs/include 212# Common for dtrace / zfs 213CDDL_CFLAGS= \ 214 -DFREEBSD_NAMECACHE \ 215 -D_SYS_VMEM_H_ \ 216 -D__KERNEL \ 217 -D__KERNEL__ \ 218 -nostdinc \ 219 -include $S/modules/zfs/static_ccompile.h \ 220 -I${ZINCDIR} \ 221 -I${ZINCDIR}/spl \ 222 -I${ZINCDIR}/os/freebsd \ 223 -I${ZINCDIR}/os/freebsd/spl \ 224 -I${ZINCDIR}/os/freebsd/zfs \ 225 -I$S/modules/zfs \ 226 -I$S/contrib/openzfs/module/zstd/include \ 227 -I$S/contrib/openzfs/module/zstd/lib/freebsd/ \ 228 ${CFLAGS} \ 229 -Wno-unknown-pragmas \ 230 -Wno-missing-prototypes \ 231 -Wno-undef \ 232 -Wno-strict-prototypes \ 233 -Wno-cast-qual \ 234 -Wno-parentheses \ 235 -Wno-redundant-decls \ 236 -Wno-missing-braces \ 237 -Wno-uninitialized \ 238 -Wno-unused \ 239 -Wno-inline \ 240 -Wno-switch \ 241 -Wno-pointer-arith \ 242 -Wno-unknown-pragmas \ 243 -Wno-duplicate-decl-specifier \ 244 -include ${ZINCDIR}/os/freebsd/spl/sys/ccompile.h \ 245 -I$S/cddl/contrib/opensolaris/uts/common \ 246 -I$S -I$S/cddl/compat/opensolaris 247CDDL_C= ${CC} -c ${CDDL_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC} 248 249# Special flags for managing the compat compiles for ZFS 250ZFS_CFLAGS+= ${CDDL_CFLAGS} -DBUILDING_ZFS -DHAVE_UIO_ZEROCOPY \ 251 -DWITH_NETDUMP -D__KERNEL__ -D_SYS_CONDVAR_H_ -DSMP \ 252 -DIN_FREEBSD_BASE -DHAVE_KSID 253 254.if ${MACHINE_ARCH} == "amd64" 255ZFS_CFLAGS+= -DHAVE_AVX2 -DHAVE_AVX -D__x86_64 -DHAVE_SSE2 -DHAVE_AVX512F \ 256 -DHAVE_SSSE3 -DHAVE_AVX512BW 257.endif 258 259.if ${MACHINE_ARCH} == "i386" || ${MACHINE_ARCH} == "powerpc" || \ 260 ${MACHINE_ARCH} == "arm" 261ZFS_CFLAGS+= -DBITS_PER_LONG=32 262.else 263ZFS_CFLAGS+= -DBITS_PER_LONG=64 264.endif 265 266 267ZFS_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${ZFS_CFLAGS} 268ZFS_C= ${CC} -c ${ZFS_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC} 269ZFS_RPC_C= ${CC} -c ${ZFS_CFLAGS} -DHAVE_RPC_TYPES ${WERROR} ${PROF} ${.IMPSRC} 270ZFS_S= ${CC} -c ${ZFS_ASM_CFLAGS} ${WERROR} ${.IMPSRC} 271 272 273 274# Special flags for managing the compat compiles for DTrace 275DTRACE_CFLAGS= -DBUILDING_DTRACE ${CDDL_CFLAGS} -I$S/cddl/dev/dtrace -I$S/cddl/dev/dtrace/${MACHINE_CPUARCH} 276.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386" 277DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/intel -I$S/cddl/dev/dtrace/x86 278.endif 279DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/common/util -I$S -DDIS_MEM -DSMP -I$S/cddl/compat/opensolaris 280DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/common 281DTRACE_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${DTRACE_CFLAGS} 282DTRACE_C= ${CC} -c ${DTRACE_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC} 283DTRACE_S= ${CC} -c ${DTRACE_ASM_CFLAGS} ${WERROR} ${.IMPSRC} 284 285# Special flags for managing the compat compiles for DTrace/FBT 286FBT_CFLAGS= -DBUILDING_DTRACE -nostdinc -I$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 287.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386" 288FBT_CFLAGS+= -I$S/cddl/dev/fbt/x86 289.endif 290FBT_C= ${CC} -c ${FBT_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC} 291 292.if ${MK_CTF} != "no" 293NORMAL_CTFCONVERT= ${CTFCONVERT} ${CTFFLAGS} ${.TARGET} 294.elif ${MAKE_VERSION} >= 5201111300 295NORMAL_CTFCONVERT= 296.else 297NORMAL_CTFCONVERT= @: 298.endif 299 300# Linux Kernel Programming Interface C-flags 301LINUXKPI_INCLUDES= -I$S/compat/linuxkpi/common/include 302LINUXKPI_C= ${NORMAL_C} ${LINUXKPI_INCLUDES} 303 304# Infiniband C flags. Correct include paths and omit errors that linux 305# does not honor. 306OFEDINCLUDES= -I$S/ofed/include -I$S/ofed/include/uapi ${LINUXKPI_INCLUDES} 307OFEDNOERR= -Wno-cast-qual -Wno-pointer-arith 308OFEDCFLAGS= ${CFLAGS:N-I*} -DCONFIG_INFINIBAND_USER_MEM \ 309 ${OFEDINCLUDES} ${CFLAGS:M-I*} ${OFEDNOERR} 310OFED_C_NOIMP= ${CC} -c -o ${.TARGET} ${OFEDCFLAGS} ${WERROR} ${PROF} 311OFED_C= ${OFED_C_NOIMP} ${.IMPSRC} 312 313# mlxfw C flags. 314MLXFW_C= ${OFED_C_NOIMP} \ 315 -I${SRCTOP}/sys/contrib/xz-embedded/freebsd \ 316 -I${SRCTOP}/sys/contrib/xz-embedded/linux/lib/xz \ 317 ${.IMPSRC} 318 319GEN_CFILES= $S/$M/$M/genassym.c ${MFILES:T:S/.m$/.c/} 320SYSTEM_CFILES= config.c env.c hints.c vnode_if.c 321SYSTEM_DEP= Makefile ${SYSTEM_OBJS} 322SYSTEM_OBJS= locore.o ${MDOBJS} ${OBJS} 323SYSTEM_OBJS+= ${SYSTEM_CFILES:.c=.o} 324SYSTEM_OBJS+= hack.pico 325 326KEYMAP=kbdcontrol -P ${SRCTOP}/share/vt/keymaps -P ${SRCTOP}/share/syscons/keymaps 327KEYMAP_FIX=sed -e 's/^static keymap_t.* = /static keymap_t key_map = /' -e 's/^static accentmap_t.* = /static accentmap_t accent_map = /' 328 329MD_ROOT_SIZE_CONFIGURED!= grep MD_ROOT_SIZE opt_md.h || true ; echo 330.if ${MFS_IMAGE:Uno} != "no" 331.if empty(MD_ROOT_SIZE_CONFIGURED) 332SYSTEM_OBJS+= embedfs_${MFS_IMAGE:T:R}.o 333.endif 334.endif 335SYSTEM_LD_BASECMD= \ 336 ${LD} -m ${LD_EMULATION} -Bdynamic -T ${LDSCRIPT} ${_LDFLAGS} \ 337 --no-warn-mismatch --warn-common --export-dynamic \ 338 --dynamic-linker /red/herring -X 339SYSTEM_LD= @${SYSTEM_LD_BASECMD} -o ${.TARGET} ${SYSTEM_OBJS} vers.o 340SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \ 341 ${SIZE} ${.TARGET} ; chmod 755 ${.TARGET} 342SYSTEM_DEP+= ${LDSCRIPT} 343 344# Calculate path for .m files early, if needed. 345.if !defined(NO_MODULES) && !defined(__MPATH) && !make(install) && \ 346 (empty(.MAKEFLAGS:M-V) || defined(NO_SKIP_MPATH)) 347__MPATH!=find ${S:tA}/ -name \*_if.m 348.endif 349 350# MKMODULESENV is set here so that port makefiles can augment 351# them. 352 353MKMODULESENV+= MAKEOBJDIRPREFIX=${.OBJDIR}/modules KMODDIR=${KODIR} 354MKMODULESENV+= MACHINE_CPUARCH=${MACHINE_CPUARCH} 355MKMODULESENV+= MACHINE=${MACHINE} MACHINE_ARCH=${MACHINE_ARCH} 356MKMODULESENV+= MODULES_EXTRA="${MODULES_EXTRA}" WITHOUT_MODULES="${WITHOUT_MODULES}" 357MKMODULESENV+= ARCH_FLAGS="${ARCH_FLAGS}" 358.if (${KERN_IDENT} == LINT) 359MKMODULESENV+= ALL_MODULES=LINT 360.endif 361.if defined(MODULES_OVERRIDE) 362MKMODULESENV+= MODULES_OVERRIDE="${MODULES_OVERRIDE}" 363.endif 364.if defined(DEBUG) 365MKMODULESENV+= DEBUG_FLAGS="${DEBUG}" 366.endif 367.if !defined(NO_MODULES) 368MKMODULESENV+= __MPATH="${__MPATH}" 369.endif 370 371# Architecture and output format arguments for objcopy to convert image to 372# object file 373 374.if ${MFS_IMAGE:Uno} != "no" 375.if empty(MD_ROOT_SIZE_CONFIGURED) 376.if !defined(EMBEDFS_FORMAT.${MACHINE_ARCH}) 377EMBEDFS_FORMAT.${MACHINE_ARCH}!= awk -F'"' '/OUTPUT_FORMAT/ {print $$2}' ${LDSCRIPT} 378.if empty(EMBEDFS_FORMAT.${MACHINE_ARCH}) 379.undef EMBEDFS_FORMAT.${MACHINE_ARCH} 380.endif 381.endif 382 383.if !defined(EMBEDFS_ARCH.${MACHINE_ARCH}) 384EMBEDFS_ARCH.${MACHINE_ARCH}!= sed -n '/OUTPUT_ARCH/s/.*(\(.*\)).*/\1/p' ${LDSCRIPT} 385.if empty(EMBEDFS_ARCH.${MACHINE_ARCH}) 386.undef EMBEDFS_ARCH.${MACHINE_ARCH} 387.endif 388.endif 389 390EMBEDFS_FORMAT.arm?= elf32-littlearm 391EMBEDFS_FORMAT.armv6?= elf32-littlearm 392EMBEDFS_FORMAT.armv7?= elf32-littlearm 393EMBEDFS_FORMAT.aarch64?= elf64-littleaarch64 394EMBEDFS_FORMAT.mips?= elf32-tradbigmips 395EMBEDFS_FORMAT.mipsel?= elf32-tradlittlemips 396EMBEDFS_FORMAT.mips64?= elf64-tradbigmips 397EMBEDFS_FORMAT.mips64el?= elf64-tradlittlemips 398EMBEDFS_FORMAT.riscv64?= elf64-littleriscv 399.endif 400.endif 401 402# Detect kernel config options that force stack frames to be turned on. 403DDB_ENABLED!= grep DDB opt_ddb.h || true ; echo 404DTR_ENABLED!= grep KDTRACE_FRAME opt_kdtrace.h || true ; echo 405HWPMC_ENABLED!= grep HWPMC opt_hwpmc_hooks.h || true ; echo 406