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+= -fno-common -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 96WERROR?= -Werror 97 98# XXX LOCORE means "don't declare C stuff" not "for locore.s". 99ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS} ${ASM_CFLAGS.${.IMPSRC:T}} 100 101.if defined(PROFLEVEL) && ${PROFLEVEL} >= 1 102CFLAGS+= -DGPROF 103CFLAGS.gcc+= -falign-functions=16 104.if ${PROFLEVEL} >= 2 105CFLAGS+= -DGPROF4 -DGUPROF 106PROF= -pg 107.if ${COMPILER_TYPE} == "gcc" 108PROF+= -mprofiler-epilogue 109.endif 110.else 111PROF= -pg 112.endif 113.endif 114DEFINED_PROF= ${PROF} 115 116KUBSAN_ENABLED!= grep KUBSAN opt_global.h || true ; echo 117.if !empty(KUBSAN_ENABLED) 118SAN_CFLAGS+= -fsanitize=undefined 119.endif 120 121KCOV_ENABLED!= grep KCOV opt_kcov.h || true ; echo 122.if !empty(KCOV_ENABLED) 123SAN_CFLAGS+= -fsanitize-coverage=trace-pc,trace-cmp 124.endif 125 126CFLAGS+= ${SAN_CFLAGS} 127 128# Put configuration-specific C flags last (except for ${PROF}) so that they 129# can override the others. 130CFLAGS+= ${CONF_CFLAGS} 131 132.if defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mbuild-id} 133LDFLAGS+= -Wl,--build-id=sha1 134.endif 135 136.if (${MACHINE_CPUARCH} == "aarch64" || ${MACHINE_CPUARCH} == "amd64" || \ 137 ${MACHINE_CPUARCH} == "i386") && \ 138 defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mifunc} == "" 139.error amd64/arm64/i386 kernel requires linker ifunc support 140.endif 141.if ${MACHINE_CPUARCH} == "amd64" 142LDFLAGS+= -Wl,-z max-page-size=2097152 143.if ${LINKER_TYPE} != "lld" 144LDFLAGS+= -Wl,-z common-page-size=4096 145.else 146LDFLAGS+= -Wl,-z -Wl,ifunc-noplt 147.endif 148.endif 149 150NORMAL_C= ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.IMPSRC} 151NORMAL_S= ${CC:N${CCACHE_BIN}} -c ${ASM_CFLAGS} ${WERROR} ${.IMPSRC} 152PROFILE_C= ${CC} -c ${CFLAGS} ${WERROR} ${.IMPSRC} 153NORMAL_C_NOWERROR= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC} 154 155NORMAL_M= ${AWK} -f $S/tools/makeobjops.awk ${.IMPSRC} -c ; \ 156 ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.PREFIX}.c 157 158NORMAL_FW= uudecode -o ${.TARGET} ${.ALLSRC} 159NORMAL_FWO= ${LD} -b binary --no-warn-mismatch -d -warn-common -r \ 160 -m ${LD_EMULATION} -o ${.TARGET} ${.ALLSRC:M*.fw} 161 162# for ZSTD in the kernel (include zstd/lib/freebsd before other CFLAGS) 163ZSTD_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__ ${.IMPSRC} 164 165# Common for dtrace / zfs 166CDDL_CFLAGS= -DFREEBSD_NAMECACHE -nostdinc -I$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 167CDDL_CFLAGS+= -include $S/cddl/compat/opensolaris/sys/debug_compat.h 168CDDL_C= ${CC} -c ${CDDL_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC} 169 170# Special flags for managing the compat compiles for ZFS 171ZFS_CFLAGS= -DBUILDING_ZFS -I$S/cddl/contrib/opensolaris/uts/common/fs/zfs 172ZFS_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/common/fs/zfs/lua 173ZFS_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/common/zmod 174ZFS_CFLAGS+= -I$S/cddl/contrib/opensolaris/common/zfs 175ZFS_CFLAGS+= ${CDDL_CFLAGS} 176ZFS_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${ZFS_CFLAGS} 177ZFS_C= ${CC} -c ${ZFS_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC} 178ZFS_S= ${CC} -c ${ZFS_ASM_CFLAGS} ${WERROR} ${.IMPSRC} 179 180# Special flags for managing the compat compiles for DTrace 181DTRACE_CFLAGS= -DBUILDING_DTRACE ${CDDL_CFLAGS} -I$S/cddl/dev/dtrace -I$S/cddl/dev/dtrace/${MACHINE_CPUARCH} 182.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386" 183DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/intel -I$S/cddl/dev/dtrace/x86 184.endif 185DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/common/util -I$S -DDIS_MEM -DSMP 186DTRACE_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${DTRACE_CFLAGS} 187DTRACE_C= ${CC} -c ${DTRACE_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC} 188DTRACE_S= ${CC} -c ${DTRACE_ASM_CFLAGS} ${WERROR} ${.IMPSRC} 189 190# Special flags for managing the compat compiles for DTrace/FBT 191FBT_CFLAGS= -DBUILDING_DTRACE -nostdinc -I$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} 192.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386" 193FBT_CFLAGS+= -I$S/cddl/dev/fbt/x86 194.endif 195FBT_C= ${CC} -c ${FBT_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC} 196 197.if ${MK_CTF} != "no" 198NORMAL_CTFCONVERT= ${CTFCONVERT} ${CTFFLAGS} ${.TARGET} 199.elif ${MAKE_VERSION} >= 5201111300 200NORMAL_CTFCONVERT= 201.else 202NORMAL_CTFCONVERT= @: 203.endif 204 205# Linux Kernel Programming Interface C-flags 206LINUXKPI_INCLUDES= -I$S/compat/linuxkpi/common/include 207LINUXKPI_C= ${NORMAL_C} ${LINUXKPI_INCLUDES} 208 209# Infiniband C flags. Correct include paths and omit errors that linux 210# does not honor. 211OFEDINCLUDES= -I$S/ofed/include -I$S/ofed/include/uapi ${LINUXKPI_INCLUDES} 212OFEDNOERR= -Wno-cast-qual -Wno-pointer-arith 213OFEDCFLAGS= ${CFLAGS:N-I*} -DCONFIG_INFINIBAND_USER_MEM \ 214 ${OFEDINCLUDES} ${CFLAGS:M-I*} ${OFEDNOERR} 215OFED_C_NOIMP= ${CC} -c -o ${.TARGET} ${OFEDCFLAGS} ${WERROR} ${PROF} 216OFED_C= ${OFED_C_NOIMP} ${.IMPSRC} 217 218GEN_CFILES= $S/$M/$M/genassym.c ${MFILES:T:S/.m$/.c/} 219SYSTEM_CFILES= config.c env.c hints.c vnode_if.c 220SYSTEM_DEP= Makefile ${SYSTEM_OBJS} 221SYSTEM_OBJS= locore.o ${MDOBJS} ${OBJS} 222SYSTEM_OBJS+= ${SYSTEM_CFILES:.c=.o} 223SYSTEM_OBJS+= hack.pico 224 225MD_ROOT_SIZE_CONFIGURED!= grep MD_ROOT_SIZE opt_md.h || true ; echo 226.if ${MFS_IMAGE:Uno} != "no" 227.if empty(MD_ROOT_SIZE_CONFIGURED) 228SYSTEM_OBJS+= embedfs_${MFS_IMAGE:T:R}.o 229.endif 230.endif 231SYSTEM_LD= @${LD} -m ${LD_EMULATION} -Bdynamic -T ${LDSCRIPT} ${_LDFLAGS} \ 232 --no-warn-mismatch --warn-common --export-dynamic \ 233 --dynamic-linker /red/herring \ 234 -o ${.TARGET} -X ${SYSTEM_OBJS} vers.o 235SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \ 236 ${SIZE} ${.TARGET} ; chmod 755 ${.TARGET} 237SYSTEM_DEP+= ${LDSCRIPT} 238 239# Calculate path for .m files early, if needed. 240.if !defined(NO_MODULES) && !defined(__MPATH) && !make(install) && \ 241 (empty(.MAKEFLAGS:M-V) || defined(NO_SKIP_MPATH)) 242__MPATH!=find ${S:tA}/ -name \*_if.m 243.endif 244 245# MKMODULESENV is set here so that port makefiles can augment 246# them. 247 248MKMODULESENV+= MAKEOBJDIRPREFIX=${.OBJDIR}/modules KMODDIR=${KODIR} 249MKMODULESENV+= MACHINE_CPUARCH=${MACHINE_CPUARCH} 250MKMODULESENV+= MACHINE=${MACHINE} MACHINE_ARCH=${MACHINE_ARCH} 251MKMODULESENV+= MODULES_EXTRA="${MODULES_EXTRA}" WITHOUT_MODULES="${WITHOUT_MODULES}" 252MKMODULESENV+= ARCH_FLAGS="${ARCH_FLAGS}" 253.if (${KERN_IDENT} == LINT) 254MKMODULESENV+= ALL_MODULES=LINT 255.endif 256.if defined(MODULES_OVERRIDE) 257MKMODULESENV+= MODULES_OVERRIDE="${MODULES_OVERRIDE}" 258.endif 259.if defined(DEBUG) 260MKMODULESENV+= DEBUG_FLAGS="${DEBUG}" 261.endif 262.if !defined(NO_MODULES) 263MKMODULESENV+= __MPATH="${__MPATH}" 264.endif 265 266# Architecture and output format arguments for objcopy to convert image to 267# object file 268 269.if ${MFS_IMAGE:Uno} != "no" 270.if empty(MD_ROOT_SIZE_CONFIGURED) 271.if !defined(EMBEDFS_FORMAT.${MACHINE_ARCH}) 272EMBEDFS_FORMAT.${MACHINE_ARCH}!= awk -F'"' '/OUTPUT_FORMAT/ {print $$2}' ${LDSCRIPT} 273.if empty(EMBEDFS_FORMAT.${MACHINE_ARCH}) 274.undef EMBEDFS_FORMAT.${MACHINE_ARCH} 275.endif 276.endif 277 278.if !defined(EMBEDFS_ARCH.${MACHINE_ARCH}) 279EMBEDFS_ARCH.${MACHINE_ARCH}!= sed -n '/OUTPUT_ARCH/s/.*(\(.*\)).*/\1/p' ${LDSCRIPT} 280.if empty(EMBEDFS_ARCH.${MACHINE_ARCH}) 281.undef EMBEDFS_ARCH.${MACHINE_ARCH} 282.endif 283.endif 284 285EMBEDFS_FORMAT.arm?= elf32-littlearm 286EMBEDFS_FORMAT.armv6?= elf32-littlearm 287EMBEDFS_FORMAT.armv7?= elf32-littlearm 288EMBEDFS_FORMAT.aarch64?= elf64-littleaarch64 289EMBEDFS_FORMAT.mips?= elf32-tradbigmips 290EMBEDFS_FORMAT.mipsel?= elf32-tradlittlemips 291EMBEDFS_FORMAT.mips64?= elf64-tradbigmips 292EMBEDFS_FORMAT.mips64el?= elf64-tradlittlemips 293EMBEDFS_FORMAT.riscv?= elf64-littleriscv 294.endif 295.endif 296 297# Detect kernel config options that force stack frames to be turned on. 298DDB_ENABLED!= grep DDB opt_ddb.h || true ; echo 299DTR_ENABLED!= grep KDTRACE_FRAME opt_kdtrace.h || true ; echo 300HWPMC_ENABLED!= grep HWPMC opt_hwpmc_hooks.h || true ; echo 301