1 2# Part of a unified Makefile for building kernels. This part contains all 3# of the definitions that need to be before %BEFORE_DEPEND. 4 5# Allow user to configure things that only effect src tree builds. 6# Note: This is duplicated from src.sys.mk to ensure that we include 7# /etc/src.conf when building the kernel. Kernels can be built without 8# the rest of /usr/src, but they still always process SRCCONF even though 9# the normal mechanisms to prevent that (compiling out of tree) won't 10# work. To ensure they do work, we have to duplicate thee few lines here. 11SRCCONF?= /etc/src.conf 12.if (exists(${SRCCONF}) || ${SRCCONF} != "/etc/src.conf") && !target(_srcconf_included_) 13.include "${SRCCONF}" 14_srcconf_included_: 15.endif 16 17.include <bsd.own.mk> 18.include <bsd.compiler.mk> 19.include "kern.opts.mk" 20.-include <local.kern.pre.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+= ${INCLUDES} -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h 75CFLAGS_PARAM_INLINE_UNIT_GROWTH?=100 76CFLAGS_PARAM_LARGE_FUNCTION_GROWTH?=1000 77CFLAGS.gcc+= -fms-extensions -finline-limit=${INLINE_LIMIT} 78CFLAGS.gcc+= --param inline-unit-growth=${CFLAGS_PARAM_INLINE_UNIT_GROWTH} 79CFLAGS.gcc+= --param large-function-growth=${CFLAGS_PARAM_LARGE_FUNCTION_GROWTH} 80CFLAGS.gcc+= -fms-extensions 81.if defined(CFLAGS_ARCH_PARAMS) 82CFLAGS.gcc+=${CFLAGS_ARCH_PARAMS} 83.endif 84WERROR?= -Werror 85# The following should be removed no earlier than LLVM11 being imported into the 86# tree, to ensure we don't regress the build. LLVM11 and GCC10 will switch the 87# default over to -fno-common, making this redundant. 88CFLAGS+= -fno-common 89 90# XXX LOCORE means "don't declare C stuff" not "for locore.s". 91ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS} ${ASM_CFLAGS.${.IMPSRC:T}} 92 93COMPAT_FREEBSD32_ENABLED!= grep COMPAT_FREEBSD32 opt_global.h || true ; echo 94 95KASAN_ENABLED!= grep KASAN opt_global.h || true ; echo 96KMSAN_ENABLED!= grep KMSAN opt_global.h || true ; echo 97KUBSAN_ENABLED!= grep KUBSAN opt_global.h || true ; echo 98COVERAGE_ENABLED!= grep COVERAGE opt_global.h || true ; echo 99 100GCOV_ENABLED!= grep GCOV opt_global.h || true ; echo 101.if !empty(GCOV_ENABLED) 102.if ${COMPILER_TYPE} == "gcc" 103GCOV_CFLAGS+= -fprofile-arcs -ftest-coverage 104.endif 105.endif 106 107CFLAGS+= ${GCOV_CFLAGS} 108 109# Put configuration-specific C flags last so that they can override 110# the others. 111CFLAGS+= ${CONF_CFLAGS} 112 113.if defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mbuild-id} 114LDFLAGS+= --build-id=sha1 115.endif 116 117.if (${MACHINE_CPUARCH} == "aarch64" || ${MACHINE_CPUARCH} == "amd64" || \ 118 ${MACHINE_CPUARCH} == "i386" || ${MACHINE} == "powerpc") && \ 119 defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mifunc} == "" && \ 120 !make(install) 121.error amd64/arm64/i386/ppc* kernel requires linker ifunc support 122.endif 123.if ${MACHINE_CPUARCH} == "amd64" 124LDFLAGS+= -z max-page-size=2097152 125.if ${LINKER_TYPE} != "lld" 126LDFLAGS+= -z common-page-size=4096 127.else 128.if defined(LINKER_FEATURES) && !${LINKER_FEATURES:Mifunc-noplt} 129.warning "Linker ${LD} does not support -z ifunc-noplt -> ifunc calls are unoptimized." 130.else 131LDFLAGS+= -z notext -z ifunc-noplt 132.endif 133.endif 134.endif # ${MACHINE_CPUARCH} == "amd64" 135 136.if ${MACHINE_CPUARCH} == "riscv" 137# Hack: Work around undefined weak symbols being out of range when linking with 138# LLD (address is a PC-relative calculation, and BFD works around this by 139# rewriting the instructions to generate an absolute address of 0); -fPIE 140# avoids this since it uses the GOT for all extern symbols, which is overly 141# inefficient for us. Drop once undefined weak symbols work with medany. 142.if ${LINKER_TYPE} == "lld" 143CFLAGS+= -fPIE 144.endif 145.endif 146 147NORMAL_C= ${CC} -c ${CFLAGS} ${WERROR} ${.IMPSRC} 148NORMAL_S= ${CC:N${CCACHE_BIN}} -c ${ASM_CFLAGS} ${WERROR} ${.IMPSRC} 149NORMAL_C_NOWERROR= ${CC} -c ${CFLAGS} ${.IMPSRC} 150 151NORMAL_M= ${AWK} -f $S/tools/makeobjops.awk ${.IMPSRC} -c ; \ 152 ${CC} -c ${CFLAGS} ${WERROR} ${.PREFIX}.c 153 154NORMAL_FW= uudecode -o ${.TARGET} ${.ALLSRC} 155NORMAL_FWO= ${CC:N${CCACHE_BIN}} -c ${ASM_CFLAGS} ${WERROR} -o ${.TARGET} \ 156 $S/kern/firmw.S -DFIRMW_FILE=\""${.ALLSRC:M*.fw}"\" \ 157 -DFIRMW_SYMBOL="${.ALLSRC:M*.fw:C/[-.\/]/_/g}" 158 159# Remove sanitizer arguments. Some -fno-sanitize* and -fasan-shadow-offset* 160# arguments become an error if the appropriate sanitizer is not enabled. 161NOSAN_C= ${NORMAL_C:N-fsanitize*:N-fno-sanitize*:N-fasan-shadow-offset*} 162 163# for ZSTD in the kernel (include zstd/lib/freebsd before other CFLAGS) 164ZSTD_C= ${CC} -c -DZSTD_HEAPMODE=1 -I$S/contrib/zstd/lib/freebsd ${CFLAGS} \ 165 -I$S/contrib/zstd/lib -I$S/contrib/zstd/lib/common ${WERROR} \ 166 -Wno-missing-prototypes -U__BMI__ -DZSTD_NO_INTRINSICS ${.IMPSRC} 167# https://github.com/facebook/zstd/commit/812e8f2a [zstd 1.4.1] 168# "Note that [GCC] autovectorization still does not do a good job on the 169# optimized version, so it's turned off via attribute and flag. I found 170# that neither attribute nor command-line flag were entirely successful in 171# turning off vectorization, which is why there were both." 172.if ${COMPILER_TYPE} == "gcc" 173ZSTD_DECOMPRESS_BLOCK_FLAGS= -fno-tree-vectorize 174.endif 175 176ZINCDIR=$S/contrib/openzfs/include 177# Common for dtrace / zfs 178CDDL_CFLAGS= \ 179 -DFREEBSD_NAMECACHE \ 180 -D_SYS_VMEM_H_ \ 181 -D__KERNEL \ 182 -D__KERNEL__ \ 183 -nostdinc \ 184 -include $S/modules/zfs/static_ccompile.h \ 185 -I${ZINCDIR} \ 186 -I${ZINCDIR}/os/freebsd \ 187 -I${ZINCDIR}/os/freebsd/spl \ 188 -I${ZINCDIR}/os/freebsd/zfs \ 189 -I$S/modules/zfs \ 190 -I$S/contrib/openzfs/module/zstd/include \ 191 ${CFLAGS} \ 192 -Wno-cast-qual \ 193 -Wno-duplicate-decl-specifier \ 194 -Wno-missing-braces \ 195 -Wno-missing-prototypes \ 196 -Wno-parentheses \ 197 -Wno-pointer-arith \ 198 -Wno-strict-prototypes \ 199 -Wno-switch \ 200 -Wno-undef \ 201 -Wno-uninitialized \ 202 -Wno-unknown-pragmas \ 203 -Wno-unused \ 204 -include ${ZINCDIR}/os/freebsd/spl/sys/ccompile.h \ 205 -I$S/cddl/contrib/opensolaris/uts/common \ 206 -I$S -I$S/cddl/compat/opensolaris 207CDDL_C= ${CC} -c ${CDDL_CFLAGS} ${WERROR} ${.IMPSRC} 208 209# Special flags for managing the compat compiles for ZFS 210ZFS_CFLAGS+= -I$S/contrib/openzfs/module/icp/include \ 211 ${CDDL_CFLAGS} -DBUILDING_ZFS -DHAVE_UIO_ZEROCOPY \ 212 -DWITH_NETDUMP -D__KERNEL__ -D_SYS_CONDVAR_H_ -DSMP 213 214.if ${MACHINE_ARCH} == "amd64" 215ZFS_CFLAGS+= -D__x86_64 -DHAVE_SSE2 -DHAVE_SSSE3 -DHAVE_SSE4_1 -DHAVE_SSE4_2 \ 216 -DHAVE_AVX -DHAVE_AVX2 -DHAVE_AVX512F -DHAVE_AVX512VL -DHAVE_AVX512BW 217.endif 218 219.if ${MACHINE_ARCH} == "i386" || ${MACHINE_ARCH} == "powerpc" || \ 220 ${MACHINE_ARCH} == "powerpcspe" || ${MACHINE_ARCH} == "arm" 221ZFS_CFLAGS+= -DBITS_PER_LONG=32 222.else 223ZFS_CFLAGS+= -DBITS_PER_LONG=64 224.endif 225 226 227ZFS_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${ZFS_CFLAGS} 228ZFS_C= ${CC} -c ${ZFS_CFLAGS} ${WERROR} ${.IMPSRC} 229ZFS_RPC_C= ${CC} -c ${ZFS_CFLAGS} -DHAVE_RPC_TYPES ${WERROR} ${.IMPSRC} 230ZFS_S= ${CC} -c ${ZFS_ASM_CFLAGS} ${WERROR} ${.IMPSRC} 231 232# ATH driver 233ATH_CFLAGS= -I${SRCTOP}/sys/dev/ath ${NO_WUNUSED_BUT_SET_VARIABLE} 234ATH_C= ${CC} -c ${CFLAGS} ${WERROR} ${ATH_CFLAGS} ${.IMPSRC} 235 236# Special flags for managing the compat compiles for DTrace 237DTRACE_CFLAGS= -DBUILDING_DTRACE ${CDDL_CFLAGS} -I$S/cddl/dev/dtrace -I$S/cddl/dev/dtrace/${MACHINE_CPUARCH} 238.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386" 239DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/intel -I$S/cddl/dev/dtrace/x86 240.endif 241DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/common/util -I$S -DDIS_MEM -DSMP -I$S/cddl/compat/opensolaris 242DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/common 243DTRACE_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${DTRACE_CFLAGS} 244DTRACE_C= ${CC} -c ${DTRACE_CFLAGS} ${WERROR} ${.IMPSRC} 245DTRACE_S= ${CC} -c ${DTRACE_ASM_CFLAGS} ${WERROR} ${.IMPSRC} 246 247# zlib code supports systems that are quite old, but will fix this issue once C2x gets radified. 248# see https://github.com/madler/zlib/issues/633 for details 249ZLIB_CFLAGS= -Wno-cast-qual ${NO_WDEPRECATED_NON_PROTOTYPE} ${NO_WSTRICT_PROTOTYPES} 250ZLIB_C= ${CC} -c ${CFLAGS} ${WERROR} ${ZLIB_CFLAGS} ${.IMPSRC} 251 252# Special flags for managing the compat compiles for DTrace/FBT 253FBT_CFLAGS= -DBUILDING_DTRACE -nostdinc -I$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 254.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386" 255FBT_CFLAGS+= -I$S/cddl/dev/fbt/x86 256.endif 257FBT_C= ${CC} -c ${FBT_CFLAGS} ${WERROR} ${.IMPSRC} 258 259.if ${MK_CTF} != "no" 260NORMAL_CTFCONVERT= ${CTFCONVERT} ${CTFFLAGS} ${.TARGET} 261.elif ${MAKE_VERSION} >= 5201111300 262NORMAL_CTFCONVERT= 263.else 264NORMAL_CTFCONVERT= @: 265.endif 266 267# Linux Kernel Programming Interface C-flags 268LINUXKPI_INCLUDES= -I$S/compat/linuxkpi/common/include \ 269 -I$S/compat/linuxkpi/dummy/include \ 270 -include $S/compat/linuxkpi/common/include/linux/kconfig.h 271LINUXKPI_C= ${NORMAL_C} ${LINUXKPI_INCLUDES} 272 273# Infiniband C flags. Correct include paths and omit errors that linux 274# does not honor. 275OFEDINCLUDES= -I$S/ofed/include -I$S/ofed/include/uapi ${LINUXKPI_INCLUDES} 276OFEDNOERR= -Wno-cast-qual -Wno-pointer-arith 277OFEDCFLAGS= ${CFLAGS:N-I*} -DCONFIG_INFINIBAND_USER_MEM \ 278 ${OFEDINCLUDES} ${CFLAGS:M-I*} ${OFEDNOERR} 279OFED_C_NOIMP= ${CC} -c -o ${.TARGET} ${OFEDCFLAGS} ${WERROR} 280OFED_C= ${OFED_C_NOIMP} ${.IMPSRC} 281 282# mlxfw C flags. 283MLXFW_C= ${OFED_C_NOIMP} \ 284 -I${SRCTOP}/sys/contrib/xz-embedded/freebsd \ 285 -I${SRCTOP}/sys/contrib/xz-embedded/linux/lib/xz \ 286 ${.IMPSRC} 287# BNXT Driver 288BNXT_CFLAGS= -I$S/dev/bnxt/bnxt_en ${OFEDCFLAGS} 289BNXT_C_NOIMP= ${CC} -c -o ${.TARGET} ${BNXT_CFLAGS} ${WERROR} 290BNXT_C= ${BNXT_C_NOIMP} ${.IMPSRC} 291 292GEN_CFILES= $S/$M/$M/genassym.c ${MFILES:T:S/.m$/.c/} 293SYSTEM_CFILES= config.c env.c hints.c vnode_if.c 294SYSTEM_DEP= Makefile ${SYSTEM_OBJS} 295SYSTEM_OBJS= locore.o ${MDOBJS} ${OBJS} 296SYSTEM_OBJS+= ${SYSTEM_CFILES:.c=.o} 297SYSTEM_OBJS+= force-dynamic-hack.pico 298 299KEYMAP=kbdcontrol -P ${SRCTOP}/share/vt/keymaps -P ${SRCTOP}/share/syscons/keymaps 300KEYMAP_FIX=sed -e 's/^static keymap_t.* = /static keymap_t key_map = /' -e 's/^static accentmap_t.* = /static accentmap_t accent_map = /' 301 302MD_ROOT_SIZE_CONFIGURED!= grep MD_ROOT_SIZE opt_md.h || true ; echo 303.if ${MFS_IMAGE:Uno} != "no" 304.if empty(MD_ROOT_SIZE_CONFIGURED) 305SYSTEM_OBJS+= embedfs_${MFS_IMAGE:T:R}.o 306.endif 307.endif 308SYSTEM_LD_BASECMD= \ 309 ${LD} -m ${LD_EMULATION} -Bdynamic -L $S/conf -T ${LDSCRIPT} ${_LDFLAGS} \ 310 --no-warn-mismatch --warn-common --export-dynamic \ 311 --dynamic-linker /red/herring -X 312SYSTEM_LD= @${SYSTEM_LD_BASECMD} -o ${.TARGET} ${SYSTEM_OBJS} vers.o 313SYSTEM_LD_TAIL= @${SIZE} ${.TARGET} ; chmod 755 ${.TARGET} 314SYSTEM_DEP+= ${LDSCRIPT} 315 316# Calculate path for .m files early, if needed. 317.if !defined(NO_MODULES) && !defined(__MPATH) && !make(install) && \ 318 (empty(.MAKEFLAGS:M-V) || defined(NO_SKIP_MPATH)) 319__MPATH!=find ${S:tA}/ -name \*_if.m 320.endif 321 322# MKMODULESENV is set here so that port makefiles can augment 323# them. 324 325MKMODULESENV+= MAKEOBJDIRPREFIX=${.OBJDIR}/modules KMODDIR=${KODIR} 326MKMODULESENV+= MACHINE_CPUARCH=${MACHINE_CPUARCH} 327MKMODULESENV+= MACHINE=${MACHINE} MACHINE_ARCH=${MACHINE_ARCH} 328MKMODULESENV+= MODULES_EXTRA="${MODULES_EXTRA}" WITHOUT_MODULES="${WITHOUT_MODULES}" 329MKMODULESENV+= ARCH_FLAGS="${ARCH_FLAGS}" 330.if (${KERN_IDENT} == LINT) 331MKMODULESENV+= ALL_MODULES=LINT 332.endif 333.if defined(MODULES_OVERRIDE) 334MKMODULESENV+= MODULES_OVERRIDE="${MODULES_OVERRIDE}" 335.endif 336.if defined(DEBUG) 337MKMODULESENV+= DEBUG_FLAGS="${DEBUG}" 338.endif 339.if !defined(NO_MODULES) 340MKMODULESENV+= __MPATH="${__MPATH}" 341.endif 342 343# Detect kernel config options that force stack frames to be turned on. 344DDB_ENABLED!= grep DDB opt_ddb.h || true ; echo 345DTRACE_ENABLED!=grep KDTRACE_FRAME opt_kdtrace.h || true ; echo 346HWPMC_ENABLED!= grep HWPMC opt_hwpmc_hooks.h || true ; echo 347