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 77.if ${MACHINE_CPUARCH} == "mips" 78CFLAGS_ARCH_PARAMS?=--param max-inline-insns-single=1000 -DMACHINE_ARCH='"${MACHINE_ARCH}"' 79.endif 80CFLAGS.gcc+= -fms-extensions -finline-limit=${INLINE_LIMIT} 81CFLAGS.gcc+= --param inline-unit-growth=${CFLAGS_PARAM_INLINE_UNIT_GROWTH} 82CFLAGS.gcc+= --param large-function-growth=${CFLAGS_PARAM_LARGE_FUNCTION_GROWTH} 83CFLAGS.gcc+= -fms-extensions 84.if defined(CFLAGS_ARCH_PARAMS) 85CFLAGS.gcc+=${CFLAGS_ARCH_PARAMS} 86.endif 87WERROR?= -Werror 88# The following should be removed no earlier than LLVM11 being imported into the 89# tree, to ensure we don't regress the build. LLVM11 and GCC10 will switch the 90# default over to -fno-common, making this redundant. 91CFLAGS+= -fno-common 92 93# XXX LOCORE means "don't declare C stuff" not "for locore.s". 94ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS} ${ASM_CFLAGS.${.IMPSRC:T}} 95 96COMPAT_FREEBSD32_ENABLED!= grep COMPAT_FREEBSD32 opt_global.h || true ; echo 97 98KASAN_ENABLED!= grep KASAN opt_global.h || true ; echo 99.if !empty(KASAN_ENABLED) 100SAN_CFLAGS+= -DSAN_NEEDS_INTERCEPTORS -DSAN_INTERCEPTOR_PREFIX=kasan \ 101 -fsanitize=kernel-address \ 102 -mllvm -asan-stack=true \ 103 -mllvm -asan-instrument-dynamic-allocas=true \ 104 -mllvm -asan-globals=true \ 105 -mllvm -asan-use-after-scope=true \ 106 -mllvm -asan-instrumentation-with-call-threshold=0 \ 107 -mllvm -asan-instrument-byval=false 108.endif 109 110KCSAN_ENABLED!= grep KCSAN opt_global.h || true ; echo 111.if !empty(KCSAN_ENABLED) 112SAN_CFLAGS+= -DSAN_NEEDS_INTERCEPTORS -DSAN_INTERCEPTOR_PREFIX=kcsan \ 113 -fsanitize=thread 114.endif 115 116KMSAN_ENABLED!= grep KMSAN opt_global.h || true ; echo 117.if !empty(KMSAN_ENABLED) 118SAN_CFLAGS+= -DSAN_NEEDS_INTERCEPTORS -DSAN_INTERCEPTOR_PREFIX=kmsan \ 119 -fsanitize=kernel-memory 120.endif 121 122KUBSAN_ENABLED!= grep KUBSAN opt_global.h || true ; echo 123.if !empty(KUBSAN_ENABLED) 124SAN_CFLAGS+= -fsanitize=undefined 125.endif 126 127COVERAGE_ENABLED!= grep COVERAGE opt_global.h || true ; echo 128.if !empty(COVERAGE_ENABLED) 129.if ${COMPILER_TYPE} == "clang" || \ 130 (${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} >= 80100) 131SAN_CFLAGS+= -fsanitize-coverage=trace-pc,trace-cmp 132.else 133SAN_CFLAGS+= -fsanitize-coverage=trace-pc 134.endif 135.endif 136 137CFLAGS+= ${SAN_CFLAGS} 138 139GCOV_ENABLED!= grep GCOV opt_global.h || true ; echo 140.if !empty(GCOV_ENABLED) 141.if ${COMPILER_TYPE} == "gcc" 142GCOV_CFLAGS+= -fprofile-arcs -ftest-coverage 143.endif 144.endif 145 146CFLAGS+= ${GCOV_CFLAGS} 147 148# Put configuration-specific C flags last so that they can override 149# the others. 150CFLAGS+= ${CONF_CFLAGS} 151 152.if defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mbuild-id} 153LDFLAGS+= --build-id=sha1 154.endif 155 156.if (${MACHINE_CPUARCH} == "aarch64" || ${MACHINE_CPUARCH} == "amd64" || \ 157 ${MACHINE_CPUARCH} == "i386" || ${MACHINE} == "powerpc") && \ 158 defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mifunc} == "" && \ 159 !make(install) 160.error amd64/arm64/i386/ppc* kernel requires linker ifunc support 161.endif 162.if ${MACHINE_CPUARCH} == "amd64" 163LDFLAGS+= -z max-page-size=2097152 164.if ${LINKER_TYPE} != "lld" 165LDFLAGS+= -z common-page-size=4096 166.else 167.if defined(LINKER_FEATURES) && !${LINKER_FEATURES:Mifunc-noplt} 168.warning "Linker ${LD} does not support -z ifunc-noplt -> ifunc calls are unoptimized." 169.else 170LDFLAGS+= -z notext -z ifunc-noplt 171.endif 172.endif 173.endif # ${MACHINE_CPUARCH} == "amd64" 174 175.if ${MACHINE_CPUARCH} == "riscv" 176# Hack: Work around undefined weak symbols being out of range when linking with 177# LLD (address is a PC-relative calculation, and BFD works around this by 178# rewriting the instructions to generate an absolute address of 0); -fPIE 179# avoids this since it uses the GOT for all extern symbols, which is overly 180# inefficient for us. Drop once undefined weak symbols work with medany. 181.if ${LINKER_TYPE} == "lld" 182CFLAGS+= -fPIE 183.endif 184.endif 185 186NORMAL_C= ${CC} -c ${CFLAGS} ${WERROR} ${.IMPSRC} 187NORMAL_S= ${CC:N${CCACHE_BIN}} -c ${ASM_CFLAGS} ${WERROR} ${.IMPSRC} 188NORMAL_C_NOWERROR= ${CC} -c ${CFLAGS} ${.IMPSRC} 189 190NORMAL_M= ${AWK} -f $S/tools/makeobjops.awk ${.IMPSRC} -c ; \ 191 ${CC} -c ${CFLAGS} ${WERROR} ${.PREFIX}.c 192 193NORMAL_FW= uudecode -o ${.TARGET} ${.ALLSRC} 194NORMAL_FWO= ${CC:N${CCACHE_BIN}} -c ${ASM_CFLAGS} ${WERROR} -o ${.TARGET} \ 195 $S/kern/firmw.S -DFIRMW_FILE="${.ALLSRC:M*.fw}" \ 196 -DFIRMW_SYMBOL="${.ALLSRC:M*.fw:C/[-.\/]/_/g}" 197 198# for ZSTD in the kernel (include zstd/lib/freebsd before other CFLAGS) 199ZSTD_C= ${CC} -c -DZSTD_HEAPMODE=1 -I$S/contrib/zstd/lib/freebsd ${CFLAGS} \ 200 -I$S/contrib/zstd/lib -I$S/contrib/zstd/lib/common ${WERROR} \ 201 -Wno-missing-prototypes -U__BMI__ -DZSTD_NO_INTRINSICS ${.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${ZINCDIR}/os/freebsd \ 222 -I${ZINCDIR}/os/freebsd/spl \ 223 -I${ZINCDIR}/os/freebsd/zfs \ 224 -I$S/modules/zfs \ 225 -I$S/contrib/openzfs/module/zstd/include \ 226 ${CFLAGS} \ 227 -Wno-cast-qual \ 228 -Wno-duplicate-decl-specifier \ 229 -Wno-missing-braces \ 230 -Wno-missing-prototypes \ 231 -Wno-nested-externs \ 232 -Wno-parentheses \ 233 -Wno-pointer-arith \ 234 -Wno-redundant-decls \ 235 -Wno-strict-prototypes \ 236 -Wno-switch \ 237 -Wno-undef \ 238 -Wno-uninitialized \ 239 -Wno-unknown-pragmas \ 240 -Wno-unused \ 241 -include ${ZINCDIR}/os/freebsd/spl/sys/ccompile.h \ 242 -I$S/cddl/contrib/opensolaris/uts/common \ 243 -I$S -I$S/cddl/compat/opensolaris 244CDDL_C= ${CC} -c ${CDDL_CFLAGS} ${WERROR} ${.IMPSRC} 245 246# Special flags for managing the compat compiles for ZFS 247ZFS_CFLAGS+= ${CDDL_CFLAGS} -DBUILDING_ZFS -DHAVE_UIO_ZEROCOPY \ 248 -DWITH_NETDUMP -D__KERNEL__ -D_SYS_CONDVAR_H_ -DSMP \ 249 -DIN_FREEBSD_BASE -DHAVE_KSID 250 251.if ${MACHINE_ARCH} == "amd64" 252ZFS_CFLAGS+= -DHAVE_AVX2 -DHAVE_AVX -D__x86_64 -DHAVE_SSE2 -DHAVE_AVX512F \ 253 -DHAVE_SSSE3 -DHAVE_AVX512BW 254.endif 255 256.if ${MACHINE_ARCH} == "i386" || ${MACHINE_ARCH} == "powerpc" || \ 257 ${MACHINE_ARCH} == "powerpcspe" || ${MACHINE_ARCH} == "arm" 258ZFS_CFLAGS+= -DBITS_PER_LONG=32 259.else 260ZFS_CFLAGS+= -DBITS_PER_LONG=64 261.endif 262 263 264ZFS_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${ZFS_CFLAGS} 265ZFS_C= ${CC} -c ${ZFS_CFLAGS} ${WERROR} ${.IMPSRC} 266ZFS_RPC_C= ${CC} -c ${ZFS_CFLAGS} -DHAVE_RPC_TYPES ${WERROR} ${.IMPSRC} 267ZFS_S= ${CC} -c ${ZFS_ASM_CFLAGS} ${WERROR} ${.IMPSRC} 268 269 270 271# Special flags for managing the compat compiles for DTrace 272DTRACE_CFLAGS= -DBUILDING_DTRACE ${CDDL_CFLAGS} -I$S/cddl/dev/dtrace -I$S/cddl/dev/dtrace/${MACHINE_CPUARCH} 273.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386" 274DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/intel -I$S/cddl/dev/dtrace/x86 275.endif 276DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/common/util -I$S -DDIS_MEM -DSMP -I$S/cddl/compat/opensolaris 277DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/common 278DTRACE_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${DTRACE_CFLAGS} 279DTRACE_C= ${CC} -c ${DTRACE_CFLAGS} ${WERROR} ${.IMPSRC} 280DTRACE_S= ${CC} -c ${DTRACE_ASM_CFLAGS} ${WERROR} ${.IMPSRC} 281 282# Special flags for managing the compat compiles for DTrace/FBT 283FBT_CFLAGS= -DBUILDING_DTRACE -nostdinc -I$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 284.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386" 285FBT_CFLAGS+= -I$S/cddl/dev/fbt/x86 286.endif 287FBT_C= ${CC} -c ${FBT_CFLAGS} ${WERROR} ${.IMPSRC} 288 289.if ${MK_CTF} != "no" 290NORMAL_CTFCONVERT= ${CTFCONVERT} ${CTFFLAGS} ${.TARGET} 291.elif ${MAKE_VERSION} >= 5201111300 292NORMAL_CTFCONVERT= 293.else 294NORMAL_CTFCONVERT= @: 295.endif 296 297# Linux Kernel Programming Interface C-flags 298LINUXKPI_INCLUDES= -I$S/compat/linuxkpi/common/include 299LINUXKPI_C= ${NORMAL_C} ${LINUXKPI_INCLUDES} 300 301# Infiniband C flags. Correct include paths and omit errors that linux 302# does not honor. 303OFEDINCLUDES= -I$S/ofed/include -I$S/ofed/include/uapi ${LINUXKPI_INCLUDES} 304OFEDNOERR= -Wno-cast-qual -Wno-pointer-arith -Wno-redundant-decls 305OFEDCFLAGS= ${CFLAGS:N-I*} -DCONFIG_INFINIBAND_USER_MEM \ 306 ${OFEDINCLUDES} ${CFLAGS:M-I*} ${OFEDNOERR} 307OFED_C_NOIMP= ${CC} -c -o ${.TARGET} ${OFEDCFLAGS} ${WERROR} 308OFED_C= ${OFED_C_NOIMP} ${.IMPSRC} 309 310# mlxfw C flags. 311MLXFW_C= ${OFED_C_NOIMP} \ 312 -I${SRCTOP}/sys/contrib/xz-embedded/freebsd \ 313 -I${SRCTOP}/sys/contrib/xz-embedded/linux/lib/xz \ 314 ${.IMPSRC} 315 316GEN_CFILES= $S/$M/$M/genassym.c ${MFILES:T:S/.m$/.c/} 317SYSTEM_CFILES= config.c env.c hints.c vnode_if.c 318SYSTEM_DEP= Makefile ${SYSTEM_OBJS} 319SYSTEM_OBJS= locore.o ${MDOBJS} ${OBJS} 320SYSTEM_OBJS+= ${SYSTEM_CFILES:.c=.o} 321SYSTEM_OBJS+= hack.pico 322 323KEYMAP=kbdcontrol -P ${SRCTOP}/share/vt/keymaps -P ${SRCTOP}/share/syscons/keymaps 324KEYMAP_FIX=sed -e 's/^static keymap_t.* = /static keymap_t key_map = /' -e 's/^static accentmap_t.* = /static accentmap_t accent_map = /' 325 326MD_ROOT_SIZE_CONFIGURED!= grep MD_ROOT_SIZE opt_md.h || true ; echo 327.if ${MFS_IMAGE:Uno} != "no" 328.if empty(MD_ROOT_SIZE_CONFIGURED) 329SYSTEM_OBJS+= embedfs_${MFS_IMAGE:T:R}.o 330.endif 331.endif 332SYSTEM_LD_BASECMD= \ 333 ${LD} -m ${LD_EMULATION} -Bdynamic -T ${LDSCRIPT} ${_LDFLAGS} \ 334 --no-warn-mismatch --warn-common --export-dynamic \ 335 --dynamic-linker /red/herring -X 336SYSTEM_LD= @${SYSTEM_LD_BASECMD} -o ${.TARGET} ${SYSTEM_OBJS} vers.o 337SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \ 338 ${SIZE} ${.TARGET} ; chmod 755 ${.TARGET} 339SYSTEM_DEP+= ${LDSCRIPT} 340 341# Calculate path for .m files early, if needed. 342.if !defined(NO_MODULES) && !defined(__MPATH) && !make(install) && \ 343 (empty(.MAKEFLAGS:M-V) || defined(NO_SKIP_MPATH)) 344__MPATH!=find ${S:tA}/ -name \*_if.m 345.endif 346 347# MKMODULESENV is set here so that port makefiles can augment 348# them. 349 350MKMODULESENV+= MAKEOBJDIRPREFIX=${.OBJDIR}/modules KMODDIR=${KODIR} 351MKMODULESENV+= MACHINE_CPUARCH=${MACHINE_CPUARCH} 352MKMODULESENV+= MACHINE=${MACHINE} MACHINE_ARCH=${MACHINE_ARCH} 353MKMODULESENV+= MODULES_EXTRA="${MODULES_EXTRA}" WITHOUT_MODULES="${WITHOUT_MODULES}" 354MKMODULESENV+= ARCH_FLAGS="${ARCH_FLAGS}" 355.if (${KERN_IDENT} == LINT) 356MKMODULESENV+= ALL_MODULES=LINT 357.endif 358.if defined(MODULES_OVERRIDE) 359MKMODULESENV+= MODULES_OVERRIDE="${MODULES_OVERRIDE}" 360.endif 361.if defined(DEBUG) 362MKMODULESENV+= DEBUG_FLAGS="${DEBUG}" 363.endif 364.if !defined(NO_MODULES) 365MKMODULESENV+= __MPATH="${__MPATH}" 366.endif 367 368# Detect kernel config options that force stack frames to be turned on. 369DDB_ENABLED!= grep DDB opt_ddb.h || true ; echo 370DTR_ENABLED!= grep KDTRACE_FRAME opt_kdtrace.h || true ; echo 371HWPMC_ENABLED!= grep HWPMC opt_hwpmc_hooks.h || true ; echo 372