Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/conf/kern.pre.mk
Version:
- FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
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1 # $FreeBSD: releng/12.0/sys/conf/kern.pre.mk 339074 2018-10-01 18:51:08Z andrew $ 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. 12 SRCCONF?= /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) || ${MK_AUTO_OBJ} == "yes" 31 NO_OBJWALK= t 32 NO_MODULES_OBJ= t 33 .endif 34 .if !defined(NO_OBJWALK) 35 _obj= obj 36 .endif 37 38 # Can be overridden by makeoptions or /etc/make.conf 39 KERNEL_KO?= kernel 40 KERNEL?= kernel 41 KODIR?= /boot/${KERNEL} 42 LDSCRIPT_NAME?= ldscript.$M 43 LDSCRIPT?= $S/conf/${LDSCRIPT_NAME} 44 45 M= ${MACHINE} 46 47 AWK?= awk 48 CP?= cp 49 NM?= nm 50 OBJCOPY?= objcopy 51 SIZE?= size 52 53 .if defined(DEBUG) 54 _MINUS_O= -O 55 CTFFLAGS+= -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 ${COMPILER_TYPE} == "clang" 65 COPTFLAGS?=-O2 -pipe 66 .else 67 COPTFLAGS?=-O2 -frename-registers -pipe 68 .endif 69 .else 70 COPTFLAGS?=${_MINUS_O} -pipe 71 .endif 72 .if !empty(COPTFLAGS:M-O[23s]) && empty(COPTFLAGS:M-fno-strict-aliasing) 73 COPTFLAGS+= -fno-strict-aliasing 74 .endif 75 .if !defined(NO_CPU_COPTFLAGS) 76 COPTFLAGS+= ${_CPUCFLAGS} 77 .endif 78 NOSTDINC= -nostdinc 79 80 INCLUDES= ${NOSTDINC} ${INCLMAGIC} -I. -I$S -I$S/contrib/ck/include 81 82 CFLAGS= ${COPTFLAGS} ${DEBUG} 83 CFLAGS+= ${INCLUDES} -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h 84 CFLAGS_PARAM_INLINE_UNIT_GROWTH?=100 85 CFLAGS_PARAM_LARGE_FUNCTION_GROWTH?=1000 86 .if ${MACHINE_CPUARCH} == "mips" 87 CFLAGS_ARCH_PARAMS?=--param max-inline-insns-single=1000 -DMACHINE_ARCH='"${MACHINE_ARCH}"' 88 .endif 89 CFLAGS.gcc+= -fno-common -fms-extensions -finline-limit=${INLINE_LIMIT} 90 CFLAGS.gcc+= --param inline-unit-growth=${CFLAGS_PARAM_INLINE_UNIT_GROWTH} 91 CFLAGS.gcc+= --param large-function-growth=${CFLAGS_PARAM_LARGE_FUNCTION_GROWTH} 92 CFLAGS.gcc+= -fms-extensions 93 .if defined(CFLAGS_ARCH_PARAMS) 94 CFLAGS.gcc+=${CFLAGS_ARCH_PARAMS} 95 .endif 96 WERROR?= -Werror 97 98 # XXX LOCORE means "don't declare C stuff" not "for locore.s". 99 ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS} ${ASM_CFLAGS.${.IMPSRC:T}} 100 101 .if defined(PROFLEVEL) && ${PROFLEVEL} >= 1 102 CFLAGS+= -DGPROF 103 CFLAGS.gcc+= -falign-functions=16 104 .if ${PROFLEVEL} >= 2 105 CFLAGS+= -DGPROF4 -DGUPROF 106 PROF= -pg 107 .if ${COMPILER_TYPE} == "gcc" 108 PROF+= -mprofiler-epilogue 109 .endif 110 .else 111 PROF= -pg 112 .endif 113 .endif 114 DEFINED_PROF= ${PROF} 115 116 # Put configuration-specific C flags last (except for ${PROF}) so that they 117 # can override the others. 118 CFLAGS+= ${CONF_CFLAGS} 119 120 .if defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mbuild-id} 121 LDFLAGS+= -Wl,--build-id=sha1 122 .endif 123 124 .if (${MACHINE_CPUARCH} == "aarch64" || ${MACHINE_CPUARCH} == "amd64" || \ 125 ${MACHINE_CPUARCH} == "i386") && \ 126 defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mifunc} == "" 127 .error amd64/arm64/i386 kernel requires linker ifunc support 128 .endif 129 .if ${MACHINE_CPUARCH} == "amd64" 130 LDFLAGS+= -Wl,-z max-page-size=2097152 -Wl,-z common-page-size=4096 -Wl,-z -Wl,ifunc-noplt 131 .endif 132 133 NORMAL_C= ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.IMPSRC} 134 NORMAL_S= ${CC:N${CCACHE_BIN}} -c ${ASM_CFLAGS} ${WERROR} ${.IMPSRC} 135 PROFILE_C= ${CC} -c ${CFLAGS} ${WERROR} ${.IMPSRC} 136 NORMAL_C_NOWERROR= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC} 137 138 NORMAL_M= ${AWK} -f $S/tools/makeobjops.awk ${.IMPSRC} -c ; \ 139 ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.PREFIX}.c 140 141 NORMAL_FW= uudecode -o ${.TARGET} ${.ALLSRC} 142 NORMAL_FWO= ${LD} -b binary --no-warn-mismatch -d -warn-common -r \ 143 -m ${LD_EMULATION} -o ${.TARGET} ${.ALLSRC:M*.fw} 144 145 # for ZSTD in the kernel (include zstd/lib/freebsd before other CFLAGS) 146 ZSTD_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__ ${.IMPSRC} 147 148 # Common for dtrace / zfs 149 CDDL_CFLAGS= -DFREEBSD_NAMECACHE -nostdinc -I$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 150 CDDL_CFLAGS+= -include $S/cddl/compat/opensolaris/sys/debug_compat.h 151 CDDL_C= ${CC} -c ${CDDL_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC} 152 153 # Special flags for managing the compat compiles for ZFS 154 ZFS_CFLAGS= -DBUILDING_ZFS -I$S/cddl/contrib/opensolaris/uts/common/fs/zfs 155 ZFS_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/common/fs/zfs/lua 156 ZFS_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/common/zmod 157 ZFS_CFLAGS+= -I$S/cddl/contrib/opensolaris/common/zfs 158 ZFS_CFLAGS+= ${CDDL_CFLAGS} 159 ZFS_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${ZFS_CFLAGS} 160 ZFS_C= ${CC} -c ${ZFS_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC} 161 ZFS_S= ${CC} -c ${ZFS_ASM_CFLAGS} ${WERROR} ${.IMPSRC} 162 163 # Special flags for managing the compat compiles for DTrace 164 DTRACE_CFLAGS= -DBUILDING_DTRACE ${CDDL_CFLAGS} -I$S/cddl/dev/dtrace -I$S/cddl/dev/dtrace/${MACHINE_CPUARCH} 165 .if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386" 166 DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/intel -I$S/cddl/dev/dtrace/x86 167 .endif 168 DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/common/util -I$S -DDIS_MEM -DSMP 169 DTRACE_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${DTRACE_CFLAGS} 170 DTRACE_C= ${CC} -c ${DTRACE_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC} 171 DTRACE_S= ${CC} -c ${DTRACE_ASM_CFLAGS} ${WERROR} ${.IMPSRC} 172 173 # Special flags for managing the compat compiles for DTrace/FBT 174 FBT_CFLAGS= -DBUILDING_DTRACE -nostdinc -I$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} 175 .if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386" 176 FBT_CFLAGS+= -I$S/cddl/dev/fbt/x86 177 .endif 178 FBT_C= ${CC} -c ${FBT_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC} 179 180 .if ${MK_CTF} != "no" 181 NORMAL_CTFCONVERT= ${CTFCONVERT} ${CTFFLAGS} ${.TARGET} 182 .elif ${MAKE_VERSION} >= 5201111300 183 NORMAL_CTFCONVERT= 184 .else 185 NORMAL_CTFCONVERT= @: 186 .endif 187 188 # Linux Kernel Programming Interface C-flags 189 LINUXKPI_INCLUDES= -I$S/compat/linuxkpi/common/include 190 LINUXKPI_C= ${NORMAL_C} ${LINUXKPI_INCLUDES} 191 192 # Infiniband C flags. Correct include paths and omit errors that linux 193 # does not honor. 194 OFEDINCLUDES= -I$S/ofed/include -I$S/ofed/include/uapi ${LINUXKPI_INCLUDES} 195 OFEDNOERR= -Wno-cast-qual -Wno-pointer-arith 196 OFEDCFLAGS= ${CFLAGS:N-I*} -DCONFIG_INFINIBAND_USER_MEM \ 197 ${OFEDINCLUDES} ${CFLAGS:M-I*} ${OFEDNOERR} 198 OFED_C_NOIMP= ${CC} -c -o ${.TARGET} ${OFEDCFLAGS} ${WERROR} ${PROF} 199 OFED_C= ${OFED_C_NOIMP} ${.IMPSRC} 200 201 GEN_CFILES= $S/$M/$M/genassym.c ${MFILES:T:S/.m$/.c/} 202 SYSTEM_CFILES= config.c env.c hints.c vnode_if.c 203 SYSTEM_DEP= Makefile ${SYSTEM_OBJS} 204 SYSTEM_OBJS= locore.o ${MDOBJS} ${OBJS} 205 SYSTEM_OBJS+= ${SYSTEM_CFILES:.c=.o} 206 SYSTEM_OBJS+= hack.pico 207 208 MD_ROOT_SIZE_CONFIGURED!= grep MD_ROOT_SIZE opt_md.h || true ; echo 209 .if ${MFS_IMAGE:Uno} != "no" 210 .if empty(MD_ROOT_SIZE_CONFIGURED) 211 SYSTEM_OBJS+= embedfs_${MFS_IMAGE:T:R}.o 212 .endif 213 .endif 214 SYSTEM_LD= @${LD} -m ${LD_EMULATION} -Bdynamic -T ${LDSCRIPT} ${_LDFLAGS} \ 215 --no-warn-mismatch --warn-common --export-dynamic \ 216 --dynamic-linker /red/herring \ 217 -o ${.TARGET} -X ${SYSTEM_OBJS} vers.o 218 SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \ 219 ${SIZE} ${.TARGET} ; chmod 755 ${.TARGET} 220 SYSTEM_DEP+= ${LDSCRIPT} 221 222 # Calculate path for .m files early, if needed. 223 .if !defined(NO_MODULES) && !defined(__MPATH) && !make(install) && \ 224 (empty(.MAKEFLAGS:M-V) || defined(NO_SKIP_MPATH)) 225 __MPATH!=find ${S:tA}/ -name \*_if.m 226 .endif 227 228 # MKMODULESENV is set here so that port makefiles can augment 229 # them. 230 231 MKMODULESENV+= MAKEOBJDIRPREFIX=${.OBJDIR}/modules KMODDIR=${KODIR} 232 MKMODULESENV+= MACHINE_CPUARCH=${MACHINE_CPUARCH} 233 MKMODULESENV+= MACHINE=${MACHINE} MACHINE_ARCH=${MACHINE_ARCH} 234 MKMODULESENV+= MODULES_EXTRA="${MODULES_EXTRA}" WITHOUT_MODULES="${WITHOUT_MODULES}" 235 MKMODULESENV+= ARCH_FLAGS="${ARCH_FLAGS}" 236 .if (${KERN_IDENT} == LINT) 237 MKMODULESENV+= ALL_MODULES=LINT 238 .endif 239 .if defined(MODULES_OVERRIDE) 240 MKMODULESENV+= MODULES_OVERRIDE="${MODULES_OVERRIDE}" 241 .endif 242 .if defined(DEBUG) 243 MKMODULESENV+= DEBUG_FLAGS="${DEBUG}" 244 .endif 245 .if !defined(NO_MODULES) 246 MKMODULESENV+= __MPATH="${__MPATH}" 247 .endif 248 249 # Architecture and output format arguments for objcopy to convert image to 250 # object file 251 252 .if ${MFS_IMAGE:Uno} != "no" 253 .if empty(MD_ROOT_SIZE_CONFIGURED) 254 .if !defined(EMBEDFS_FORMAT.${MACHINE_ARCH}) 255 EMBEDFS_FORMAT.${MACHINE_ARCH}!= awk -F'"' '/OUTPUT_FORMAT/ {print $$2}' ${LDSCRIPT} 256 .if empty(EMBEDFS_FORMAT.${MACHINE_ARCH}) 257 .undef EMBEDFS_FORMAT.${MACHINE_ARCH} 258 .endif 259 .endif 260 261 .if !defined(EMBEDFS_ARCH.${MACHINE_ARCH}) 262 EMBEDFS_ARCH.${MACHINE_ARCH}!= sed -n '/OUTPUT_ARCH/s/.*(\(.*\)).*/\1/p' ${LDSCRIPT} 263 .if empty(EMBEDFS_ARCH.${MACHINE_ARCH}) 264 .undef EMBEDFS_ARCH.${MACHINE_ARCH} 265 .endif 266 .endif 267 268 EMBEDFS_FORMAT.arm?= elf32-littlearm 269 EMBEDFS_FORMAT.armv6?= elf32-littlearm 270 EMBEDFS_FORMAT.armv7?= elf32-littlearm 271 EMBEDFS_FORMAT.aarch64?= elf64-littleaarch64 272 EMBEDFS_FORMAT.mips?= elf32-tradbigmips 273 EMBEDFS_FORMAT.mipsel?= elf32-tradlittlemips 274 EMBEDFS_FORMAT.mips64?= elf64-tradbigmips 275 EMBEDFS_FORMAT.mips64el?= elf64-tradlittlemips 276 EMBEDFS_FORMAT.riscv?= elf64-littleriscv 277 .endif 278 .endif 279 280 # Detect kernel config options that force stack frames to be turned on. 281 DDB_ENABLED!= grep DDB opt_ddb.h || true ; echo 282 DTR_ENABLED!= grep KDTRACE_FRAME opt_kdtrace.h || true ; echo 283 HWPMC_ENABLED!= grep HWPMC opt_hwpmc_hooks.h || true ; echo
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