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