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 169LDFLAGS+= -z notext -z ifunc-noplt 170.endif 171.endif 172 173.if ${MACHINE_CPUARCH} == "riscv" 174# Hack: Work around undefined weak symbols being out of range when linking with 175# LLD (address is a PC-relative calculation, and BFD works around this by 176# rewriting the instructions to generate an absolute address of 0); -fPIE 177# avoids this since it uses the GOT for all extern symbols, which is overly 178# inefficient for us. Drop once undefined weak symbols work with medany. 179.if ${LINKER_TYPE} == "lld" 180CFLAGS+= -fPIE 181.endif 182.endif 183 184NORMAL_C= ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.IMPSRC} 185NORMAL_S= ${CC:N${CCACHE_BIN}} -c ${ASM_CFLAGS} ${WERROR} ${.IMPSRC} 186PROFILE_C= ${CC} -c ${CFLAGS} ${WERROR} ${.IMPSRC} 187NORMAL_C_NOWERROR= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC} 188 189NORMAL_M= ${AWK} -f $S/tools/makeobjops.awk ${.IMPSRC} -c ; \ 190 ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.PREFIX}.c 191 192NORMAL_FW= uudecode -o ${.TARGET} ${.ALLSRC} 193NORMAL_FWO= ${LD} -b binary --no-warn-mismatch -d -warn-common -r \ 194 -m ${LD_EMULATION} -o ${.TARGET} ${.ALLSRC:M*.fw} 195 196# for ZSTD in the kernel (include zstd/lib/freebsd before other CFLAGS) 197ZSTD_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} 198# https://github.com/facebook/zstd/commit/812e8f2a [zstd 1.4.1] 199# "Note that [GCC] autovectorization still does not do a good job on the 200# optimized version, so it's turned off via attribute and flag. I found 201# that neither attribute nor command-line flag were entirely successful in 202# turning off vectorization, which is why there were both." 203.if ${COMPILER_TYPE} == "gcc" 204ZSTD_DECOMPRESS_BLOCK_FLAGS= -fno-tree-vectorize 205.endif 206 207# Common for dtrace / zfs 208CDDL_CFLAGS= -DFREEBSD_NAMECACHE -nostdinc -I$S/cddl/compat/opensolaris -I$S/cddl/contrib/opensolaris/uts/common -I$S -I$S/cddl/contrib/opensolaris/common ${CFLAGS} -Wno-unknown-pragmas -Wno-missing-prototypes -Wno-undef -Wno-strict-prototypes -Wno-cast-qual -Wno-parentheses -Wno-redundant-decls -Wno-missing-braces -Wno-uninitialized -Wno-unused -Wno-inline -Wno-switch -Wno-pointer-arith -Wno-unknown-pragmas 209CDDL_CFLAGS+= -include $S/cddl/compat/opensolaris/sys/debug_compat.h 210CDDL_C= ${CC} -c ${CDDL_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC} 211 212# Special flags for managing the compat compiles for ZFS 213ZFS_CFLAGS= -DBUILDING_ZFS -I$S/cddl/contrib/opensolaris/uts/common/fs/zfs 214ZFS_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/common/fs/zfs/lua 215ZFS_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/common/zmod 216ZFS_CFLAGS+= -I$S/cddl/contrib/opensolaris/common/lz4 217ZFS_CFLAGS+= -I$S/cddl/contrib/opensolaris/common/zfs 218ZFS_CFLAGS+= ${CDDL_CFLAGS} 219ZFS_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${ZFS_CFLAGS} 220ZFS_C= ${CC} -c ${ZFS_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC} 221ZFS_S= ${CC} -c ${ZFS_ASM_CFLAGS} ${WERROR} ${.IMPSRC} 222 223# Special flags for managing the compat compiles for DTrace 224DTRACE_CFLAGS= -DBUILDING_DTRACE ${CDDL_CFLAGS} -I$S/cddl/dev/dtrace -I$S/cddl/dev/dtrace/${MACHINE_CPUARCH} 225.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386" 226DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/intel -I$S/cddl/dev/dtrace/x86 227.endif 228DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/common/util -I$S -DDIS_MEM -DSMP 229DTRACE_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${DTRACE_CFLAGS} 230DTRACE_C= ${CC} -c ${DTRACE_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC} 231DTRACE_S= ${CC} -c ${DTRACE_ASM_CFLAGS} ${WERROR} ${.IMPSRC} 232 233# Special flags for managing the compat compiles for DTrace/FBT 234FBT_CFLAGS= -DBUILDING_DTRACE -nostdinc -I$S/cddl/dev/fbt/${MACHINE_CPUARCH} -I$S/cddl/dev/fbt -I$S/cddl/compat/opensolaris -I$S/cddl/contrib/opensolaris/uts/common -I$S ${CDDL_CFLAGS} 235.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386" 236FBT_CFLAGS+= -I$S/cddl/dev/fbt/x86 237.endif 238FBT_C= ${CC} -c ${FBT_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC} 239 240.if ${MK_CTF} != "no" 241NORMAL_CTFCONVERT= ${CTFCONVERT} ${CTFFLAGS} ${.TARGET} 242.elif ${MAKE_VERSION} >= 5201111300 243NORMAL_CTFCONVERT= 244.else 245NORMAL_CTFCONVERT= @: 246.endif 247 248# Linux Kernel Programming Interface C-flags 249LINUXKPI_INCLUDES= -I$S/compat/linuxkpi/common/include 250LINUXKPI_C= ${NORMAL_C} ${LINUXKPI_INCLUDES} 251 252# Infiniband C flags. Correct include paths and omit errors that linux 253# does not honor. 254OFEDINCLUDES= -I$S/ofed/include -I$S/ofed/include/uapi ${LINUXKPI_INCLUDES} 255OFEDNOERR= -Wno-cast-qual -Wno-pointer-arith 256OFEDCFLAGS= ${CFLAGS:N-I*} -DCONFIG_INFINIBAND_USER_MEM \ 257 ${OFEDINCLUDES} ${CFLAGS:M-I*} ${OFEDNOERR} 258OFED_C_NOIMP= ${CC} -c -o ${.TARGET} ${OFEDCFLAGS} ${WERROR} ${PROF} 259OFED_C= ${OFED_C_NOIMP} ${.IMPSRC} 260 261# mlxfw C flags. 262MLXFW_C= ${OFED_C_NOIMP} \ 263 -I${SRCTOP}/sys/contrib/xz-embedded/freebsd \ 264 -I${SRCTOP}/sys/contrib/xz-embedded/linux/lib/xz \ 265 ${.IMPSRC} 266 267GEN_CFILES= $S/$M/$M/genassym.c ${MFILES:T:S/.m$/.c/} 268SYSTEM_CFILES= config.c env.c hints.c vnode_if.c 269SYSTEM_DEP= Makefile ${SYSTEM_OBJS} 270SYSTEM_OBJS= locore.o ${MDOBJS} ${OBJS} 271SYSTEM_OBJS+= ${SYSTEM_CFILES:.c=.o} 272SYSTEM_OBJS+= hack.pico 273 274KEYMAP=kbdcontrol -P ${SRCTOP}/share/vt/keymaps -P ${SRCTOP}/share/syscons/keymaps 275KEYMAP_FIX=sed -e 's/^static keymap_t.* = /static keymap_t key_map = /' -e 's/^static accentmap_t.* = /static accentmap_t accent_map = /' 276 277MD_ROOT_SIZE_CONFIGURED!= grep MD_ROOT_SIZE opt_md.h || true ; echo 278.if ${MFS_IMAGE:Uno} != "no" 279.if empty(MD_ROOT_SIZE_CONFIGURED) 280SYSTEM_OBJS+= embedfs_${MFS_IMAGE:T:R}.o 281.endif 282.endif 283SYSTEM_LD_BASECMD= \ 284 ${LD} -m ${LD_EMULATION} -Bdynamic -T ${LDSCRIPT} ${_LDFLAGS} \ 285 --no-warn-mismatch --warn-common --export-dynamic \ 286 --dynamic-linker /red/herring -X 287SYSTEM_LD= @${SYSTEM_LD_BASECMD} -o ${.TARGET} ${SYSTEM_OBJS} vers.o 288SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \ 289 ${SIZE} ${.TARGET} ; chmod 755 ${.TARGET} 290SYSTEM_DEP+= ${LDSCRIPT} 291 292# Calculate path for .m files early, if needed. 293.if !defined(NO_MODULES) && !defined(__MPATH) && !make(install) && \ 294 (empty(.MAKEFLAGS:M-V) || defined(NO_SKIP_MPATH)) 295__MPATH!=find ${S:tA}/ -name \*_if.m 296.endif 297 298# MKMODULESENV is set here so that port makefiles can augment 299# them. 300 301MKMODULESENV+= MAKEOBJDIRPREFIX=${.OBJDIR}/modules KMODDIR=${KODIR} 302MKMODULESENV+= MACHINE_CPUARCH=${MACHINE_CPUARCH} 303MKMODULESENV+= MACHINE=${MACHINE} MACHINE_ARCH=${MACHINE_ARCH} 304MKMODULESENV+= MODULES_EXTRA="${MODULES_EXTRA}" WITHOUT_MODULES="${WITHOUT_MODULES}" 305MKMODULESENV+= ARCH_FLAGS="${ARCH_FLAGS}" 306.if (${KERN_IDENT} == LINT) 307MKMODULESENV+= ALL_MODULES=LINT 308.endif 309.if defined(MODULES_OVERRIDE) 310MKMODULESENV+= MODULES_OVERRIDE="${MODULES_OVERRIDE}" 311.endif 312.if defined(DEBUG) 313MKMODULESENV+= DEBUG_FLAGS="${DEBUG}" 314.endif 315.if !defined(NO_MODULES) 316MKMODULESENV+= __MPATH="${__MPATH}" 317.endif 318 319# Architecture and output format arguments for objcopy to convert image to 320# object file 321 322.if ${MFS_IMAGE:Uno} != "no" 323.if empty(MD_ROOT_SIZE_CONFIGURED) 324.if !defined(EMBEDFS_FORMAT.${MACHINE_ARCH}) 325EMBEDFS_FORMAT.${MACHINE_ARCH}!= awk -F'"' '/OUTPUT_FORMAT/ {print $$2}' ${LDSCRIPT} 326.if empty(EMBEDFS_FORMAT.${MACHINE_ARCH}) 327.undef EMBEDFS_FORMAT.${MACHINE_ARCH} 328.endif 329.endif 330 331.if !defined(EMBEDFS_ARCH.${MACHINE_ARCH}) 332EMBEDFS_ARCH.${MACHINE_ARCH}!= sed -n '/OUTPUT_ARCH/s/.*(\(.*\)).*/\1/p' ${LDSCRIPT} 333.if empty(EMBEDFS_ARCH.${MACHINE_ARCH}) 334.undef EMBEDFS_ARCH.${MACHINE_ARCH} 335.endif 336.endif 337 338EMBEDFS_FORMAT.arm?= elf32-littlearm 339EMBEDFS_FORMAT.armv6?= elf32-littlearm 340EMBEDFS_FORMAT.armv7?= elf32-littlearm 341EMBEDFS_FORMAT.aarch64?= elf64-littleaarch64 342EMBEDFS_FORMAT.mips?= elf32-tradbigmips 343EMBEDFS_FORMAT.mipsel?= elf32-tradlittlemips 344EMBEDFS_FORMAT.mips64?= elf64-tradbigmips 345EMBEDFS_FORMAT.mips64el?= elf64-tradlittlemips 346EMBEDFS_FORMAT.riscv64?= elf64-littleriscv 347.endif 348.endif 349 350# Detect kernel config options that force stack frames to be turned on. 351DDB_ENABLED!= grep DDB opt_ddb.h || true ; echo 352DTR_ENABLED!= grep KDTRACE_FRAME opt_kdtrace.h || true ; echo 353HWPMC_ENABLED!= grep HWPMC opt_hwpmc_hooks.h || true ; echo 354