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+= -fsanitize=kernel-address \ 98 -mllvm -asan-stack=true \ 99 -mllvm -asan-instrument-dynamic-allocas=true \ 100 -mllvm -asan-globals=true \ 101 -mllvm -asan-use-after-scope=true \ 102 -mllvm -asan-instrumentation-with-call-threshold=0 103.endif 104 105KCSAN_ENABLED!= grep KCSAN opt_global.h || true ; echo 106.if !empty(KCSAN_ENABLED) 107SAN_CFLAGS+= -fsanitize=thread 108.endif 109 110KUBSAN_ENABLED!= grep KUBSAN opt_global.h || true ; echo 111.if !empty(KUBSAN_ENABLED) 112SAN_CFLAGS+= -fsanitize=undefined 113.endif 114 115COVERAGE_ENABLED!= grep COVERAGE opt_global.h || true ; echo 116.if !empty(COVERAGE_ENABLED) 117.if ${COMPILER_TYPE} == "clang" || \ 118 (${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} >= 80100) 119SAN_CFLAGS+= -fsanitize-coverage=trace-pc,trace-cmp 120.else 121SAN_CFLAGS+= -fsanitize-coverage=trace-pc 122.endif 123.endif 124 125CFLAGS+= ${SAN_CFLAGS} 126 127GCOV_ENABLED!= grep GCOV opt_global.h || true ; echo 128.if !empty(GCOV_ENABLED) 129.if ${COMPILER_TYPE} == "gcc" 130GCOV_CFLAGS+= -fprofile-arcs -ftest-coverage 131.endif 132.endif 133 134CFLAGS+= ${GCOV_CFLAGS} 135 136# Put configuration-specific C flags last so that they can override 137# the others. 138CFLAGS+= ${CONF_CFLAGS} 139 140.if defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mbuild-id} 141LDFLAGS+= --build-id=sha1 142.endif 143 144.if (${MACHINE_CPUARCH} == "aarch64" || ${MACHINE_CPUARCH} == "amd64" || \ 145 ${MACHINE_CPUARCH} == "i386" || ${MACHINE} == "powerpc") && \ 146 defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mifunc} == "" && \ 147 !make(install) 148.error amd64/arm64/i386/ppc* kernel requires linker ifunc support 149.endif 150.if ${MACHINE_CPUARCH} == "amd64" 151LDFLAGS+= -z max-page-size=2097152 152.if ${LINKER_TYPE} != "lld" 153LDFLAGS+= -z common-page-size=4096 154.else 155.if defined(LINKER_FEATURES) && !${LINKER_FEATURES:Mifunc-noplt} 156.warning "Linker ${LD} does not support -z ifunc-noplt -> ifunc calls are unoptimized." 157.else 158LDFLAGS+= -z notext -z ifunc-noplt 159.endif 160.endif 161.endif # ${MACHINE_CPUARCH} == "amd64" 162 163.if ${MACHINE_CPUARCH} == "riscv" 164# Hack: Work around undefined weak symbols being out of range when linking with 165# LLD (address is a PC-relative calculation, and BFD works around this by 166# rewriting the instructions to generate an absolute address of 0); -fPIE 167# avoids this since it uses the GOT for all extern symbols, which is overly 168# inefficient for us. Drop once undefined weak symbols work with medany. 169.if ${LINKER_TYPE} == "lld" 170CFLAGS+= -fPIE 171.endif 172.endif 173 174NORMAL_C= ${CC} -c ${CFLAGS} ${WERROR} ${.IMPSRC} 175NORMAL_S= ${CC:N${CCACHE_BIN}} -c ${ASM_CFLAGS} ${WERROR} ${.IMPSRC} 176NORMAL_C_NOWERROR= ${CC} -c ${CFLAGS} ${.IMPSRC} 177 178NORMAL_M= ${AWK} -f $S/tools/makeobjops.awk ${.IMPSRC} -c ; \ 179 ${CC} -c ${CFLAGS} ${WERROR} ${.PREFIX}.c 180 181NORMAL_FW= uudecode -o ${.TARGET} ${.ALLSRC} 182NORMAL_FWO= ${CC:N${CCACHE_BIN}} -c ${ASM_CFLAGS} ${WERROR} -o ${.TARGET} \ 183 $S/kern/firmw.S -DFIRMW_FILE="${.ALLSRC:M*.fw}" \ 184 -DFIRMW_SYMBOL="${.ALLSRC:M*.fw:C/[-.\/]/_/g}" 185 186# for ZSTD in the kernel (include zstd/lib/freebsd before other CFLAGS) 187ZSTD_C= ${CC} -c -DZSTD_HEAPMODE=1 -I$S/contrib/zstd/lib/freebsd ${CFLAGS} \ 188 -I$S/contrib/zstd/lib -I$S/contrib/zstd/lib/common ${WERROR} \ 189 -Wno-missing-prototypes -U__BMI__ -DZSTD_NO_INTRINSICS ${.IMPSRC} 190# https://github.com/facebook/zstd/commit/812e8f2a [zstd 1.4.1] 191# "Note that [GCC] autovectorization still does not do a good job on the 192# optimized version, so it's turned off via attribute and flag. I found 193# that neither attribute nor command-line flag were entirely successful in 194# turning off vectorization, which is why there were both." 195.if ${COMPILER_TYPE} == "gcc" 196ZSTD_DECOMPRESS_BLOCK_FLAGS= -fno-tree-vectorize 197.endif 198 199ZINCDIR=$S/contrib/openzfs/include 200# Common for dtrace / zfs 201CDDL_CFLAGS= \ 202 -DFREEBSD_NAMECACHE \ 203 -D_SYS_VMEM_H_ \ 204 -D__KERNEL \ 205 -D__KERNEL__ \ 206 -nostdinc \ 207 -include $S/modules/zfs/static_ccompile.h \ 208 -I${ZINCDIR} \ 209 -I${ZINCDIR}/os/freebsd \ 210 -I${ZINCDIR}/os/freebsd/spl \ 211 -I${ZINCDIR}/os/freebsd/zfs \ 212 -I$S/modules/zfs \ 213 -I$S/contrib/openzfs/module/zstd/include \ 214 ${CFLAGS} \ 215 -Wno-cast-qual \ 216 -Wno-duplicate-decl-specifier \ 217 -Wno-missing-braces \ 218 -Wno-missing-prototypes \ 219 -Wno-nested-externs \ 220 -Wno-parentheses \ 221 -Wno-pointer-arith \ 222 -Wno-redundant-decls \ 223 -Wno-strict-prototypes \ 224 -Wno-switch \ 225 -Wno-undef \ 226 -Wno-uninitialized \ 227 -Wno-unknown-pragmas \ 228 -Wno-unused \ 229 -include ${ZINCDIR}/os/freebsd/spl/sys/ccompile.h \ 230 -I$S/cddl/contrib/opensolaris/uts/common \ 231 -I$S -I$S/cddl/compat/opensolaris 232CDDL_C= ${CC} -c ${CDDL_CFLAGS} ${WERROR} ${.IMPSRC} 233 234# Special flags for managing the compat compiles for ZFS 235ZFS_CFLAGS+= ${CDDL_CFLAGS} -DBUILDING_ZFS -DHAVE_UIO_ZEROCOPY \ 236 -DWITH_NETDUMP -D__KERNEL__ -D_SYS_CONDVAR_H_ -DSMP \ 237 -DIN_FREEBSD_BASE -DHAVE_KSID 238 239.if ${MACHINE_ARCH} == "amd64" 240ZFS_CFLAGS+= -DHAVE_AVX2 -DHAVE_AVX -D__x86_64 -DHAVE_SSE2 -DHAVE_AVX512F \ 241 -DHAVE_SSSE3 -DHAVE_AVX512BW 242.endif 243 244.if ${MACHINE_ARCH} == "i386" || ${MACHINE_ARCH} == "powerpc" || \ 245 ${MACHINE_ARCH} == "powerpcspe" || ${MACHINE_ARCH} == "arm" 246ZFS_CFLAGS+= -DBITS_PER_LONG=32 247.else 248ZFS_CFLAGS+= -DBITS_PER_LONG=64 249.endif 250 251 252ZFS_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${ZFS_CFLAGS} 253ZFS_C= ${CC} -c ${ZFS_CFLAGS} ${WERROR} ${.IMPSRC} 254ZFS_RPC_C= ${CC} -c ${ZFS_CFLAGS} -DHAVE_RPC_TYPES ${WERROR} ${.IMPSRC} 255ZFS_S= ${CC} -c ${ZFS_ASM_CFLAGS} ${WERROR} ${.IMPSRC} 256 257 258 259# Special flags for managing the compat compiles for DTrace 260DTRACE_CFLAGS= -DBUILDING_DTRACE ${CDDL_CFLAGS} -I$S/cddl/dev/dtrace -I$S/cddl/dev/dtrace/${MACHINE_CPUARCH} 261.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386" 262DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/intel -I$S/cddl/dev/dtrace/x86 263.endif 264DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/common/util -I$S -DDIS_MEM -DSMP -I$S/cddl/compat/opensolaris 265DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/common 266DTRACE_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${DTRACE_CFLAGS} 267DTRACE_C= ${CC} -c ${DTRACE_CFLAGS} ${WERROR} ${.IMPSRC} 268DTRACE_S= ${CC} -c ${DTRACE_ASM_CFLAGS} ${WERROR} ${.IMPSRC} 269 270# Special flags for managing the compat compiles for DTrace/FBT 271FBT_CFLAGS= -DBUILDING_DTRACE -nostdinc -I$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 272.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386" 273FBT_CFLAGS+= -I$S/cddl/dev/fbt/x86 274.endif 275FBT_C= ${CC} -c ${FBT_CFLAGS} ${WERROR} ${.IMPSRC} 276 277.if ${MK_CTF} != "no" 278NORMAL_CTFCONVERT= ${CTFCONVERT} ${CTFFLAGS} ${.TARGET} 279.elif ${MAKE_VERSION} >= 5201111300 280NORMAL_CTFCONVERT= 281.else 282NORMAL_CTFCONVERT= @: 283.endif 284 285# Linux Kernel Programming Interface C-flags 286LINUXKPI_INCLUDES= -I$S/compat/linuxkpi/common/include 287LINUXKPI_C= ${NORMAL_C} ${LINUXKPI_INCLUDES} 288 289# Infiniband C flags. Correct include paths and omit errors that linux 290# does not honor. 291OFEDINCLUDES= -I$S/ofed/include -I$S/ofed/include/uapi ${LINUXKPI_INCLUDES} 292OFEDNOERR= -Wno-cast-qual -Wno-pointer-arith 293OFEDCFLAGS= ${CFLAGS:N-I*} -DCONFIG_INFINIBAND_USER_MEM \ 294 ${OFEDINCLUDES} ${CFLAGS:M-I*} ${OFEDNOERR} 295OFED_C_NOIMP= ${CC} -c -o ${.TARGET} ${OFEDCFLAGS} ${WERROR} 296OFED_C= ${OFED_C_NOIMP} ${.IMPSRC} 297 298# mlxfw C flags. 299MLXFW_C= ${OFED_C_NOIMP} \ 300 -I${SRCTOP}/sys/contrib/xz-embedded/freebsd \ 301 -I${SRCTOP}/sys/contrib/xz-embedded/linux/lib/xz \ 302 ${.IMPSRC} 303 304GEN_CFILES= $S/$M/$M/genassym.c ${MFILES:T:S/.m$/.c/} 305SYSTEM_CFILES= config.c env.c hints.c vnode_if.c 306SYSTEM_DEP= Makefile ${SYSTEM_OBJS} 307SYSTEM_OBJS= locore.o ${MDOBJS} ${OBJS} 308SYSTEM_OBJS+= ${SYSTEM_CFILES:.c=.o} 309SYSTEM_OBJS+= hack.pico 310 311KEYMAP=kbdcontrol -P ${SRCTOP}/share/vt/keymaps -P ${SRCTOP}/share/syscons/keymaps 312KEYMAP_FIX=sed -e 's/^static keymap_t.* = /static keymap_t key_map = /' -e 's/^static accentmap_t.* = /static accentmap_t accent_map = /' 313 314MD_ROOT_SIZE_CONFIGURED!= grep MD_ROOT_SIZE opt_md.h || true ; echo 315.if ${MFS_IMAGE:Uno} != "no" 316.if empty(MD_ROOT_SIZE_CONFIGURED) 317SYSTEM_OBJS+= embedfs_${MFS_IMAGE:T:R}.o 318.endif 319.endif 320SYSTEM_LD_BASECMD= \ 321 ${LD} -m ${LD_EMULATION} -Bdynamic -T ${LDSCRIPT} ${_LDFLAGS} \ 322 --no-warn-mismatch --warn-common --export-dynamic \ 323 --dynamic-linker /red/herring -X 324SYSTEM_LD= @${SYSTEM_LD_BASECMD} -o ${.TARGET} ${SYSTEM_OBJS} vers.o 325SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \ 326 ${SIZE} ${.TARGET} ; chmod 755 ${.TARGET} 327SYSTEM_DEP+= ${LDSCRIPT} 328 329# Calculate path for .m files early, if needed. 330.if !defined(NO_MODULES) && !defined(__MPATH) && !make(install) && \ 331 (empty(.MAKEFLAGS:M-V) || defined(NO_SKIP_MPATH)) 332__MPATH!=find ${S:tA}/ -name \*_if.m 333.endif 334 335# MKMODULESENV is set here so that port makefiles can augment 336# them. 337 338MKMODULESENV+= MAKEOBJDIRPREFIX=${.OBJDIR}/modules KMODDIR=${KODIR} 339MKMODULESENV+= MACHINE_CPUARCH=${MACHINE_CPUARCH} 340MKMODULESENV+= MACHINE=${MACHINE} MACHINE_ARCH=${MACHINE_ARCH} 341MKMODULESENV+= MODULES_EXTRA="${MODULES_EXTRA}" WITHOUT_MODULES="${WITHOUT_MODULES}" 342MKMODULESENV+= ARCH_FLAGS="${ARCH_FLAGS}" 343.if (${KERN_IDENT} == LINT) 344MKMODULESENV+= ALL_MODULES=LINT 345.endif 346.if defined(MODULES_OVERRIDE) 347MKMODULESENV+= MODULES_OVERRIDE="${MODULES_OVERRIDE}" 348.endif 349.if defined(DEBUG) 350MKMODULESENV+= DEBUG_FLAGS="${DEBUG}" 351.endif 352.if !defined(NO_MODULES) 353MKMODULESENV+= __MPATH="${__MPATH}" 354.endif 355 356# Detect kernel config options that force stack frames to be turned on. 357DDB_ENABLED!= grep DDB opt_ddb.h || true ; echo 358DTR_ENABLED!= grep KDTRACE_FRAME opt_kdtrace.h || true ; echo 359HWPMC_ENABLED!= grep HWPMC opt_hwpmc_hooks.h || true ; echo 360