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/11.2/sys/conf/kern.pre.mk 331769 2018-03-30 18:06:29Z hselasky $ 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: ${.CURDIR} 29 30 # Can be overridden by makeoptions or /etc/make.conf 31 KERNEL_KO?= kernel 32 KERNEL?= kernel 33 KODIR?= /boot/${KERNEL} 34 LDSCRIPT_NAME?= ldscript.$M 35 LDSCRIPT?= $S/conf/${LDSCRIPT_NAME} 36 37 M= ${MACHINE} 38 39 AWK?= awk 40 CP?= cp 41 LINT?= lint 42 NM?= nm 43 OBJCOPY?= objcopy 44 SIZE?= size 45 46 .if defined(DEBUG) 47 _MINUS_O= -O 48 CTFFLAGS+= -g 49 .else 50 .if ${MACHINE_CPUARCH} == "powerpc" 51 _MINUS_O= -O # gcc miscompiles some code at -O2 52 .else 53 _MINUS_O= -O2 54 .endif 55 .endif 56 .if ${MACHINE_CPUARCH} == "amd64" 57 .if ${COMPILER_TYPE} == "clang" 58 COPTFLAGS?=-O2 -pipe 59 .else 60 COPTFLAGS?=-O2 -frename-registers -pipe 61 .endif 62 .else 63 COPTFLAGS?=${_MINUS_O} -pipe 64 .endif 65 .if !empty(COPTFLAGS:M-O[23s]) && empty(COPTFLAGS:M-fno-strict-aliasing) 66 COPTFLAGS+= -fno-strict-aliasing 67 .endif 68 .if !defined(NO_CPU_COPTFLAGS) 69 COPTFLAGS+= ${_CPUCFLAGS} 70 .endif 71 NOSTDINC= -nostdinc 72 73 INCLUDES= ${NOSTDINC} ${INCLMAGIC} -I. -I$S 74 75 CFLAGS= ${COPTFLAGS} ${DEBUG} 76 CFLAGS+= ${INCLUDES} -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h 77 CFLAGS_PARAM_INLINE_UNIT_GROWTH?=100 78 CFLAGS_PARAM_LARGE_FUNCTION_GROWTH?=1000 79 .if ${MACHINE_CPUARCH} == "mips" 80 CFLAGS_ARCH_PARAMS?=--param max-inline-insns-single=1000 81 .endif 82 CFLAGS.gcc+= -fno-common -fms-extensions -finline-limit=${INLINE_LIMIT} 83 CFLAGS.gcc+= --param inline-unit-growth=${CFLAGS_PARAM_INLINE_UNIT_GROWTH} 84 CFLAGS.gcc+= --param large-function-growth=${CFLAGS_PARAM_LARGE_FUNCTION_GROWTH} 85 .if defined(CFLAGS_ARCH_PARAMS) 86 CFLAGS.gcc+=${CFLAGS_ARCH_PARAMS} 87 .endif 88 WERROR?= -Werror 89 90 # XXX LOCORE means "don't declare C stuff" not "for locore.s". 91 ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS} ${ASM_CFLAGS.${.IMPSRC:T}} 92 93 .if defined(PROFLEVEL) && ${PROFLEVEL} >= 1 94 CFLAGS+= -DGPROF 95 CFLAGS.gcc+= -falign-functions=16 96 .if ${PROFLEVEL} >= 2 97 CFLAGS+= -DGPROF4 -DGUPROF 98 PROF= -pg 99 .if ${COMPILER_TYPE} == "gcc" 100 PROF+= -mprofiler-epilogue 101 .endif 102 .else 103 PROF= -pg 104 .endif 105 .endif 106 DEFINED_PROF= ${PROF} 107 108 # Put configuration-specific C flags last (except for ${PROF}) so that they 109 # can override the others. 110 CFLAGS+= ${CONF_CFLAGS} 111 112 .if defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mbuild-id} 113 LDFLAGS+= -Wl,--build-id=sha1 114 .endif 115 116 # Optional linting. This can be overridden in /etc/make.conf. 117 LINTFLAGS= ${LINTOBJKERNFLAGS} 118 119 NORMAL_C= ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.IMPSRC} 120 NORMAL_S= ${CC:N${CCACHE_BIN}} -c ${ASM_CFLAGS} ${WERROR} ${.IMPSRC} 121 PROFILE_C= ${CC} -c ${CFLAGS} ${WERROR} ${.IMPSRC} 122 NORMAL_C_NOWERROR= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC} 123 124 NORMAL_M= ${AWK} -f $S/tools/makeobjops.awk ${.IMPSRC} -c ; \ 125 ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.PREFIX}.c 126 127 NORMAL_FW= uudecode -o ${.TARGET} ${.ALLSRC} 128 NORMAL_FWO= ${LD} -b binary --no-warn-mismatch -d -warn-common -r \ 129 -m ${LD_EMULATION} -o ${.TARGET} ${.ALLSRC:M*.fw} 130 131 # Common for dtrace / zfs 132 CDDL_CFLAGS= -DFREEBSD_NAMECACHE -nostdinc -I$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 133 CDDL_CFLAGS+= -include $S/cddl/compat/opensolaris/sys/debug_compat.h 134 CDDL_C= ${CC} -c ${CDDL_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC} 135 136 # Special flags for managing the compat compiles for ZFS 137 ZFS_CFLAGS= -DBUILDING_ZFS -I$S/cddl/contrib/opensolaris/uts/common/fs/zfs 138 ZFS_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/common/fs/zfs/lua 139 ZFS_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/common/zmod 140 ZFS_CFLAGS+= -I$S/cddl/contrib/opensolaris/common/zfs 141 ZFS_CFLAGS+= ${CDDL_CFLAGS} 142 ZFS_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${ZFS_CFLAGS} 143 ZFS_C= ${CC} -c ${ZFS_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC} 144 ZFS_S= ${CC} -c ${ZFS_ASM_CFLAGS} ${WERROR} ${.IMPSRC} 145 146 # Special flags for managing the compat compiles for DTrace 147 DTRACE_CFLAGS= -DBUILDING_DTRACE ${CDDL_CFLAGS} -I$S/cddl/dev/dtrace -I$S/cddl/dev/dtrace/${MACHINE_CPUARCH} 148 .if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386" 149 DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/intel -I$S/cddl/dev/dtrace/x86 150 .endif 151 DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/common/util -I$S -DDIS_MEM -DSMP 152 DTRACE_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${DTRACE_CFLAGS} 153 DTRACE_C= ${CC} -c ${DTRACE_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC} 154 DTRACE_S= ${CC} -c ${DTRACE_ASM_CFLAGS} ${WERROR} ${.IMPSRC} 155 156 # Special flags for managing the compat compiles for DTrace/FBT 157 FBT_CFLAGS= -DBUILDING_DTRACE -nostdinc -I$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} 158 .if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386" 159 FBT_CFLAGS+= -I$S/cddl/dev/fbt/x86 160 .endif 161 FBT_C= ${CC} -c ${FBT_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC} 162 163 .if ${MK_CTF} != "no" 164 NORMAL_CTFCONVERT= ${CTFCONVERT} ${CTFFLAGS} ${.TARGET} 165 .elif ${MAKE_VERSION} >= 5201111300 166 NORMAL_CTFCONVERT= 167 .else 168 NORMAL_CTFCONVERT= @: 169 .endif 170 171 NORMAL_LINT= ${LINT} ${LINTFLAGS} ${CFLAGS:M-[DIU]*} ${.IMPSRC} 172 173 # Linux Kernel Programming Interface C-flags 174 LINUXKPI_INCLUDES= -I$S/compat/linuxkpi/common/include 175 LINUXKPI_C= ${NORMAL_C} ${LINUXKPI_INCLUDES} 176 177 # Infiniband C flags. Correct include paths and omit errors that linux 178 # does not honor. 179 OFEDINCLUDES= -I$S/ofed/include -I$S/ofed/include/uapi ${LINUXKPI_INCLUDES} 180 OFEDNOERR= -Wno-cast-qual -Wno-pointer-arith 181 OFEDCFLAGS= ${CFLAGS:N-I*} -DCONFIG_INFINIBAND_USER_MEM \ 182 ${OFEDINCLUDES} ${CFLAGS:M-I*} ${OFEDNOERR} 183 OFED_C_NOIMP= ${CC} -c -o ${.TARGET} ${OFEDCFLAGS} ${WERROR} ${PROF} 184 OFED_C= ${OFED_C_NOIMP} ${.IMPSRC} 185 186 GEN_CFILES= $S/$M/$M/genassym.c ${MFILES:T:S/.m$/.c/} 187 SYSTEM_CFILES= config.c env.c hints.c vnode_if.c 188 SYSTEM_DEP= Makefile ${SYSTEM_OBJS} 189 SYSTEM_OBJS= locore.o ${MDOBJS} ${OBJS} 190 SYSTEM_OBJS+= ${SYSTEM_CFILES:.c=.o} 191 SYSTEM_OBJS+= hack.pico 192 193 MD_ROOT_SIZE_CONFIGURED!= grep MD_ROOT_SIZE opt_md.h || true ; echo 194 .if ${MFS_IMAGE:Uno} != "no" 195 .if empty(MD_ROOT_SIZE_CONFIGURED) 196 SYSTEM_OBJS+= embedfs_${MFS_IMAGE:T:R}.o 197 .endif 198 .endif 199 SYSTEM_LD= @${LD} -Bdynamic -T ${LDSCRIPT} ${_LDFLAGS} --no-warn-mismatch \ 200 --warn-common --export-dynamic --dynamic-linker /red/herring \ 201 -o ${.TARGET} -X ${SYSTEM_OBJS} vers.o 202 SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \ 203 ${SIZE} ${.TARGET} ; chmod 755 ${.TARGET} 204 SYSTEM_DEP+= ${LDSCRIPT} 205 206 # Calculate path for .m files early, if needed. 207 .if !defined(NO_MODULES) && !defined(__MPATH) 208 __MPATH!=find ${S:tA}/ -name \*_if.m 209 .endif 210 211 # MKMODULESENV is set here so that port makefiles can augment 212 # them. 213 214 MKMODULESENV+= MAKEOBJDIRPREFIX=${.OBJDIR}/modules KMODDIR=${KODIR} 215 MKMODULESENV+= MACHINE_CPUARCH=${MACHINE_CPUARCH} 216 MKMODULESENV+= MACHINE=${MACHINE} MACHINE_ARCH=${MACHINE_ARCH} 217 MKMODULESENV+= MODULES_EXTRA="${MODULES_EXTRA}" WITHOUT_MODULES="${WITHOUT_MODULES}" 218 MKMODULESENV+= ARCH_FLAGS="${ARCH_FLAGS}" 219 .if (${KERN_IDENT} == LINT) 220 MKMODULESENV+= ALL_MODULES=LINT 221 .endif 222 .if defined(MODULES_OVERRIDE) 223 MKMODULESENV+= MODULES_OVERRIDE="${MODULES_OVERRIDE}" 224 .endif 225 .if defined(DEBUG) 226 MKMODULESENV+= DEBUG_FLAGS="${DEBUG}" 227 .endif 228 .if !defined(NO_MODULES) 229 MKMODULESENV+= __MPATH="${__MPATH}" 230 .endif 231 232 # Architecture and output format arguments for objdump to convert image to 233 # object file 234 235 .if ${MFS_IMAGE:Uno} != "no" 236 .if empty(MD_ROOT_SIZE_CONFIGURED) 237 .if !defined(EMBEDFS_FORMAT.${MACHINE_ARCH}) 238 EMBEDFS_FORMAT.${MACHINE_ARCH}!= awk -F'"' '/OUTPUT_FORMAT/ {print $$2}' ${LDSCRIPT} 239 .if empty(EMBEDFS_FORMAT.${MACHINE_ARCH}) 240 .undef EMBEDFS_FORMAT.${MACHINE_ARCH} 241 .endif 242 .endif 243 244 .if !defined(EMBEDFS_ARCH.${MACHINE_ARCH}) 245 EMBEDFS_ARCH.${MACHINE_ARCH}!= sed -n '/OUTPUT_ARCH/s/.*(\(.*\)).*/\1/p' ${LDSCRIPT} 246 .if empty(EMBEDFS_ARCH.${MACHINE_ARCH}) 247 .undef EMBEDFS_ARCH.${MACHINE_ARCH} 248 .endif 249 .endif 250 251 EMBEDFS_FORMAT.arm?= elf32-littlearm 252 EMBEDFS_FORMAT.armv6?= elf32-littlearm 253 EMBEDFS_FORMAT.aarch64?= elf64-littleaarch64 254 EMBEDFS_FORMAT.mips?= elf32-tradbigmips 255 EMBEDFS_FORMAT.mipsel?= elf32-tradlittlemips 256 EMBEDFS_FORMAT.mips64?= elf64-tradbigmips 257 EMBEDFS_FORMAT.mips64el?= elf64-tradlittlemips 258 EMBEDFS_FORMAT.riscv?= elf64-littleriscv 259 .endif 260 .endif 261 262 # Detect kernel config options that force stack frames to be turned on. 263 DDB_ENABLED!= grep DDB opt_ddb.h || true ; echo 264 DTR_ENABLED!= grep KDTRACE_FRAME opt_kdtrace.h || true ; echo 265 HWPMC_ENABLED!= grep HWPMC opt_hwpmc_hooks.h || true ; echo
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