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 96.if ${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} < 50000 97WERROR?= -Wno-error 98.else 99WERROR?= -Werror 100.endif 101# The following should be removed no earlier than LLVM11 being imported into the 102# tree, to ensure we don't regress the build. LLVM11 and GCC10 will switch the 103# default over to -fno-common, making this redundant. 104CFLAGS+= -fno-common 105 106# XXX LOCORE means "don't declare C stuff" not "for locore.s". 107ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS} ${ASM_CFLAGS.${.IMPSRC:T}} 108 109.if defined(PROFLEVEL) && ${PROFLEVEL} >= 1 110CFLAGS+= -DGPROF 111CFLAGS.gcc+= -falign-functions=16 112.if ${PROFLEVEL} >= 2 113CFLAGS+= -DGPROF4 -DGUPROF 114PROF= -pg 115.if ${COMPILER_TYPE} == "gcc" 116PROF+= -mprofiler-epilogue 117.endif 118.else 119PROF= -pg 120.endif 121.endif 122DEFINED_PROF= ${PROF} 123 124KCSAN_ENABLED!= grep KCSAN opt_global.h || true ; echo 125.if !empty(KCSAN_ENABLED) 126SAN_CFLAGS+= -fsanitize=thread 127.endif 128 129KUBSAN_ENABLED!= grep KUBSAN opt_global.h || true ; echo 130.if !empty(KUBSAN_ENABLED) 131SAN_CFLAGS+= -fsanitize=undefined 132.endif 133 134COVERAGE_ENABLED!= grep COVERAGE opt_global.h || true ; echo 135.if !empty(COVERAGE_ENABLED) 136.if ${COMPILER_TYPE} == "clang" || \ 137 (${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} >= 80100) 138SAN_CFLAGS+= -fsanitize-coverage=trace-pc,trace-cmp 139.else 140SAN_CFLAGS+= -fsanitize-coverage=trace-pc 141.endif 142.endif 143 144CFLAGS+= ${SAN_CFLAGS} 145 146GCOV_ENABLED!= grep GCOV opt_global.h || true ; echo 147.if !empty(GCOV_ENABLED) 148.if ${COMPILER_TYPE} == "gcc" 149GCOV_CFLAGS+= -fprofile-arcs -ftest-coverage 150.endif 151.endif 152 153CFLAGS+= ${GCOV_CFLAGS} 154 155# Put configuration-specific C flags last (except for ${PROF}) so that they 156# can override the others. 157CFLAGS+= ${CONF_CFLAGS} 158 159.if defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mbuild-id} 160LDFLAGS+= --build-id=sha1 161.endif 162 163.if (${MACHINE_CPUARCH} == "aarch64" || ${MACHINE_CPUARCH} == "amd64" || \ 164 ${MACHINE_CPUARCH} == "i386") && \ 165 defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mifunc} == "" 166.error amd64/arm64/i386 kernel requires linker ifunc support 167.endif 168.if ${MACHINE_CPUARCH} == "amd64" 169LDFLAGS+= -z max-page-size=2097152 170.if ${LINKER_TYPE} != "lld" 171LDFLAGS+= -z common-page-size=4096 172.else 173LDFLAGS+= -z notext -z ifunc-noplt 174.endif 175.endif 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 ${COMPILER_TYPE} == "gcc" 208ZSTD_DECOMPRESS_BLOCK_FLAGS= -fno-tree-vectorize 209.endif 210 211# Common for dtrace / zfs 212CDDL_CFLAGS= -DFREEBSD_NAMECACHE -nostdinc -I$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 213CDDL_CFLAGS+= -include $S/cddl/compat/opensolaris/sys/debug_compat.h 214CDDL_C= ${CC} -c ${CDDL_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC} 215 216# Special flags for managing the compat compiles for ZFS 217ZFS_CFLAGS= -DBUILDING_ZFS -I$S/cddl/contrib/opensolaris/uts/common/fs/zfs 218ZFS_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/common/fs/zfs/lua 219ZFS_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/common/zmod 220ZFS_CFLAGS+= -I$S/cddl/contrib/opensolaris/common/lz4 221ZFS_CFLAGS+= -I$S/cddl/contrib/opensolaris/common/zfs 222ZFS_CFLAGS+= ${CDDL_CFLAGS} 223ZFS_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${ZFS_CFLAGS} 224ZFS_C= ${CC} -c ${ZFS_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC} 225ZFS_S= ${CC} -c ${ZFS_ASM_CFLAGS} ${WERROR} ${.IMPSRC} 226 227# Special flags for managing the compat compiles for DTrace 228DTRACE_CFLAGS= -DBUILDING_DTRACE ${CDDL_CFLAGS} -I$S/cddl/dev/dtrace -I$S/cddl/dev/dtrace/${MACHINE_CPUARCH} 229.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386" 230DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/intel -I$S/cddl/dev/dtrace/x86 231.endif 232DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/common/util -I$S -DDIS_MEM -DSMP 233DTRACE_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${DTRACE_CFLAGS} 234DTRACE_C= ${CC} -c ${DTRACE_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC} 235DTRACE_S= ${CC} -c ${DTRACE_ASM_CFLAGS} ${WERROR} ${.IMPSRC} 236 237# Special flags for managing the compat compiles for DTrace/FBT 238FBT_CFLAGS= -DBUILDING_DTRACE -nostdinc -I$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} 239.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386" 240FBT_CFLAGS+= -I$S/cddl/dev/fbt/x86 241.endif 242FBT_C= ${CC} -c ${FBT_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC} 243 244.if ${MK_CTF} != "no" 245NORMAL_CTFCONVERT= ${CTFCONVERT} ${CTFFLAGS} ${.TARGET} 246.elif ${MAKE_VERSION} >= 5201111300 247NORMAL_CTFCONVERT= 248.else 249NORMAL_CTFCONVERT= @: 250.endif 251 252# Linux Kernel Programming Interface C-flags 253LINUXKPI_INCLUDES= -I$S/compat/linuxkpi/common/include 254LINUXKPI_C= ${NORMAL_C} ${LINUXKPI_INCLUDES} 255 256# Infiniband C flags. Correct include paths and omit errors that linux 257# does not honor. 258OFEDINCLUDES= -I$S/ofed/include -I$S/ofed/include/uapi ${LINUXKPI_INCLUDES} 259OFEDNOERR= -Wno-cast-qual -Wno-pointer-arith 260OFEDCFLAGS= ${CFLAGS:N-I*} -DCONFIG_INFINIBAND_USER_MEM \ 261 ${OFEDINCLUDES} ${CFLAGS:M-I*} ${OFEDNOERR} 262OFED_C_NOIMP= ${CC} -c -o ${.TARGET} ${OFEDCFLAGS} ${WERROR} ${PROF} 263OFED_C= ${OFED_C_NOIMP} ${.IMPSRC} 264 265# mlxfw C flags. 266MLXFW_C= ${OFED_C_NOIMP} \ 267 -I${SRCTOP}/sys/contrib/xz-embedded/freebsd \ 268 -I${SRCTOP}/sys/contrib/xz-embedded/linux/lib/xz \ 269 ${.IMPSRC} 270 271GEN_CFILES= $S/$M/$M/genassym.c ${MFILES:T:S/.m$/.c/} 272SYSTEM_CFILES= config.c env.c hints.c vnode_if.c 273SYSTEM_DEP= Makefile ${SYSTEM_OBJS} 274SYSTEM_OBJS= locore.o ${MDOBJS} ${OBJS} 275SYSTEM_OBJS+= ${SYSTEM_CFILES:.c=.o} 276SYSTEM_OBJS+= hack.pico 277 278KEYMAP=kbdcontrol -P ${SRCTOP}/share/vt/keymaps -P ${SRCTOP}/share/syscons/keymaps 279KEYMAP_FIX=sed -e 's/^static keymap_t.* = /static keymap_t key_map = /' -e 's/^static accentmap_t.* = /static accentmap_t accent_map = /' 280 281MD_ROOT_SIZE_CONFIGURED!= grep MD_ROOT_SIZE opt_md.h || true ; echo 282.if ${MFS_IMAGE:Uno} != "no" 283.if empty(MD_ROOT_SIZE_CONFIGURED) 284SYSTEM_OBJS+= embedfs_${MFS_IMAGE:T:R}.o 285.endif 286.endif 287SYSTEM_LD_BASECMD= \ 288 ${LD} -m ${LD_EMULATION} -Bdynamic -T ${LDSCRIPT} ${_LDFLAGS} \ 289 --no-warn-mismatch --warn-common --export-dynamic \ 290 --dynamic-linker /red/herring -X 291SYSTEM_LD= @${SYSTEM_LD_BASECMD} -o ${.TARGET} ${SYSTEM_OBJS} vers.o 292SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \ 293 ${SIZE} ${.TARGET} ; chmod 755 ${.TARGET} 294SYSTEM_DEP+= ${LDSCRIPT} 295 296# Calculate path for .m files early, if needed. 297.if !defined(NO_MODULES) && !defined(__MPATH) && !make(install) && \ 298 (empty(.MAKEFLAGS:M-V) || defined(NO_SKIP_MPATH)) 299__MPATH!=find ${S:tA}/ -name \*_if.m 300.endif 301 302# MKMODULESENV is set here so that port makefiles can augment 303# them. 304 305MKMODULESENV+= MAKEOBJDIRPREFIX=${.OBJDIR}/modules KMODDIR=${KODIR} 306MKMODULESENV+= MACHINE_CPUARCH=${MACHINE_CPUARCH} 307MKMODULESENV+= MACHINE=${MACHINE} MACHINE_ARCH=${MACHINE_ARCH} 308MKMODULESENV+= MODULES_EXTRA="${MODULES_EXTRA}" WITHOUT_MODULES="${WITHOUT_MODULES}" 309MKMODULESENV+= ARCH_FLAGS="${ARCH_FLAGS}" 310.if (${KERN_IDENT} == LINT) 311MKMODULESENV+= ALL_MODULES=LINT 312.endif 313.if defined(MODULES_OVERRIDE) 314MKMODULESENV+= MODULES_OVERRIDE="${MODULES_OVERRIDE}" 315.endif 316.if defined(DEBUG) 317MKMODULESENV+= DEBUG_FLAGS="${DEBUG}" 318.endif 319.if !defined(NO_MODULES) 320MKMODULESENV+= __MPATH="${__MPATH}" 321.endif 322 323# Architecture and output format arguments for objcopy to convert image to 324# object file 325 326.if ${MFS_IMAGE:Uno} != "no" 327.if empty(MD_ROOT_SIZE_CONFIGURED) 328.if !defined(EMBEDFS_FORMAT.${MACHINE_ARCH}) 329EMBEDFS_FORMAT.${MACHINE_ARCH}!= awk -F'"' '/OUTPUT_FORMAT/ {print $$2}' ${LDSCRIPT} 330.if empty(EMBEDFS_FORMAT.${MACHINE_ARCH}) 331.undef EMBEDFS_FORMAT.${MACHINE_ARCH} 332.endif 333.endif 334 335.if !defined(EMBEDFS_ARCH.${MACHINE_ARCH}) 336EMBEDFS_ARCH.${MACHINE_ARCH}!= sed -n '/OUTPUT_ARCH/s/.*(\(.*\)).*/\1/p' ${LDSCRIPT} 337.if empty(EMBEDFS_ARCH.${MACHINE_ARCH}) 338.undef EMBEDFS_ARCH.${MACHINE_ARCH} 339.endif 340.endif 341 342EMBEDFS_FORMAT.arm?= elf32-littlearm 343EMBEDFS_FORMAT.armv6?= elf32-littlearm 344EMBEDFS_FORMAT.armv7?= elf32-littlearm 345EMBEDFS_FORMAT.aarch64?= elf64-littleaarch64 346EMBEDFS_FORMAT.mips?= elf32-tradbigmips 347EMBEDFS_FORMAT.mipsel?= elf32-tradlittlemips 348EMBEDFS_FORMAT.mips64?= elf64-tradbigmips 349EMBEDFS_FORMAT.mips64el?= elf64-tradlittlemips 350EMBEDFS_FORMAT.riscv64?= elf64-littleriscv 351.endif 352.endif 353 354# Detect kernel config options that force stack frames to be turned on. 355DDB_ENABLED!= grep DDB opt_ddb.h || true ; echo 356DTR_ENABLED!= grep KDTRACE_FRAME opt_kdtrace.h || true ; echo 357HWPMC_ENABLED!= grep HWPMC opt_hwpmc_hooks.h || true ; echo 358