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+= -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 96.if ${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} < 50000 97WERROR?= -Wno-error 98.else 99WERROR?= -Werror 100.endif 101# The following should be removed no earlier than LLVM11 being imported into the 102# tree, to ensure we don't regress the build. LLVM11 and GCC10 will switch the 103# default over to -fno-common, making this redundant. 104CFLAGS+= -fno-common 105 106# XXX LOCORE means "don't declare C stuff" not "for locore.s". 107ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS} ${ASM_CFLAGS.${.IMPSRC:T}} 108 109.if defined(PROFLEVEL) && ${PROFLEVEL} >= 1 110CFLAGS+= -DGPROF 111CFLAGS.gcc+= -falign-functions=16 112.if ${PROFLEVEL} >= 2 113CFLAGS+= -DGPROF4 -DGUPROF 114PROF= -pg 115.if ${COMPILER_TYPE} == "gcc" 116PROF+= -mprofiler-epilogue 117.endif 118.else 119PROF= -pg 120.endif 121.endif 122DEFINED_PROF= ${PROF} 123 124# Put configuration-specific C flags last (except for ${PROF}) so that they 125# can override the others. 126CFLAGS+= ${CONF_CFLAGS} 127 128.if defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mbuild-id} 129LDFLAGS+= --build-id=sha1 130.endif 131 132.if (${MACHINE_CPUARCH} == "aarch64" || ${MACHINE_CPUARCH} == "amd64" || \ 133 ${MACHINE_CPUARCH} == "i386") && \ 134 defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mifunc} == "" && \ 135 !make(install) 136.error amd64/arm64/i386 kernel requires linker ifunc support 137.endif 138.if ${MACHINE_CPUARCH} == "amd64" 139LDFLAGS+= -z max-page-size=2097152 140.if ${LINKER_TYPE} != "lld" 141LDFLAGS+= -z common-page-size=4096 142.else 143LDFLAGS+= -z notext -z ifunc-noplt 144.endif 145.endif 146 147.if ${MACHINE_CPUARCH} == "riscv" 148# Hack: Work around undefined weak symbols being out of range when linking with 149# LLD (address is a PC-relative calculation, and BFD works around this by 150# rewriting the instructions to generate an absolute address of 0); -fPIE 151# avoids this since it uses the GOT for all extern symbols, which is overly 152# inefficient for us. Drop once undefined weak symbols work with medany. 153.if ${LINKER_TYPE} == "lld" 154CFLAGS+= -fPIE 155.endif 156.endif 157 158NORMAL_C= ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.IMPSRC} 159NORMAL_S= ${CC:N${CCACHE_BIN}} -c ${ASM_CFLAGS} ${WERROR} ${.IMPSRC} 160PROFILE_C= ${CC} -c ${CFLAGS} ${WERROR} ${.IMPSRC} 161NORMAL_C_NOWERROR= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC} 162 163NORMAL_M= ${AWK} -f $S/tools/makeobjops.awk ${.IMPSRC} -c ; \ 164 ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.PREFIX}.c 165 166NORMAL_FW= uudecode -o ${.TARGET} ${.ALLSRC} 167NORMAL_FWO= ${LD} -b binary --no-warn-mismatch -d -warn-common -r \ 168 -m ${LD_EMULATION} -o ${.TARGET} ${.ALLSRC:M*.fw} 169 170# for ZSTD in the kernel (include zstd/lib/freebsd before other CFLAGS) 171ZSTD_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__ ${.IMPSRC} 172 173# Common for dtrace / zfs 174CDDL_CFLAGS= -DFREEBSD_NAMECACHE -nostdinc -I$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 175CDDL_CFLAGS+= -include $S/cddl/compat/opensolaris/sys/debug_compat.h 176CDDL_C= ${CC} -c ${CDDL_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC} 177 178# Special flags for managing the compat compiles for ZFS 179ZFS_CFLAGS= -DBUILDING_ZFS -I$S/cddl/contrib/opensolaris/uts/common/fs/zfs 180ZFS_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/common/fs/zfs/lua 181ZFS_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/common/zmod 182ZFS_CFLAGS+= -I$S/cddl/contrib/opensolaris/common/lz4 183ZFS_CFLAGS+= -I$S/cddl/contrib/opensolaris/common/zfs 184ZFS_CFLAGS+= ${CDDL_CFLAGS} 185ZFS_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${ZFS_CFLAGS} 186ZFS_C= ${CC} -c ${ZFS_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC} 187ZFS_S= ${CC} -c ${ZFS_ASM_CFLAGS} ${WERROR} ${.IMPSRC} 188 189# Special flags for managing the compat compiles for DTrace 190DTRACE_CFLAGS= -DBUILDING_DTRACE ${CDDL_CFLAGS} -I$S/cddl/dev/dtrace -I$S/cddl/dev/dtrace/${MACHINE_CPUARCH} 191.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386" 192DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/intel -I$S/cddl/dev/dtrace/x86 193.endif 194DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/common/util -I$S -DDIS_MEM -DSMP 195DTRACE_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${DTRACE_CFLAGS} 196DTRACE_C= ${CC} -c ${DTRACE_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC} 197DTRACE_S= ${CC} -c ${DTRACE_ASM_CFLAGS} ${WERROR} ${.IMPSRC} 198 199# Special flags for managing the compat compiles for DTrace/FBT 200FBT_CFLAGS= -DBUILDING_DTRACE -nostdinc -I$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} 201.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386" 202FBT_CFLAGS+= -I$S/cddl/dev/fbt/x86 203.endif 204FBT_C= ${CC} -c ${FBT_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC} 205 206.if ${MK_CTF} != "no" 207NORMAL_CTFCONVERT= ${CTFCONVERT} ${CTFFLAGS} ${.TARGET} 208.elif ${MAKE_VERSION} >= 5201111300 209NORMAL_CTFCONVERT= 210.else 211NORMAL_CTFCONVERT= @: 212.endif 213 214# Linux Kernel Programming Interface C-flags 215LINUXKPI_INCLUDES= -I$S/compat/linuxkpi/common/include 216LINUXKPI_C= ${NORMAL_C} ${LINUXKPI_INCLUDES} 217 218# Infiniband C flags. Correct include paths and omit errors that linux 219# does not honor. 220OFEDINCLUDES= -I$S/ofed/include -I$S/ofed/include/uapi ${LINUXKPI_INCLUDES} 221OFEDNOERR= -Wno-cast-qual -Wno-pointer-arith 222OFEDCFLAGS= ${CFLAGS:N-I*} -DCONFIG_INFINIBAND_USER_MEM \ 223 ${OFEDINCLUDES} ${CFLAGS:M-I*} ${OFEDNOERR} 224OFED_C_NOIMP= ${CC} -c -o ${.TARGET} ${OFEDCFLAGS} ${WERROR} ${PROF} 225OFED_C= ${OFED_C_NOIMP} ${.IMPSRC} 226 227# mlxfw C flags. 228MLXFW_C= ${OFED_C_NOIMP} \ 229 -I${SRCTOP}/sys/contrib/xz-embedded/freebsd \ 230 -I${SRCTOP}/sys/contrib/xz-embedded/linux/lib/xz \ 231 ${.IMPSRC} 232 233GEN_CFILES= $S/$M/$M/genassym.c ${MFILES:T:S/.m$/.c/} 234SYSTEM_CFILES= config.c env.c hints.c vnode_if.c 235SYSTEM_DEP= Makefile ${SYSTEM_OBJS} 236SYSTEM_OBJS= locore.o ${MDOBJS} ${OBJS} 237SYSTEM_OBJS+= ${SYSTEM_CFILES:.c=.o} 238SYSTEM_OBJS+= hack.pico 239 240MD_ROOT_SIZE_CONFIGURED!= grep MD_ROOT_SIZE opt_md.h || true ; echo 241.if ${MFS_IMAGE:Uno} != "no" 242.if empty(MD_ROOT_SIZE_CONFIGURED) 243SYSTEM_OBJS+= embedfs_${MFS_IMAGE:T:R}.o 244.endif 245.endif 246SYSTEM_LD= @${LD} -m ${LD_EMULATION} -Bdynamic -T ${LDSCRIPT} ${_LDFLAGS} \ 247 --no-warn-mismatch --warn-common --export-dynamic \ 248 --dynamic-linker /red/herring \ 249 -o ${.TARGET} -X ${SYSTEM_OBJS} vers.o 250SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \ 251 ${SIZE} ${.TARGET} ; chmod 755 ${.TARGET} 252SYSTEM_DEP+= ${LDSCRIPT} 253 254# Calculate path for .m files early, if needed. 255.if !defined(NO_MODULES) && !defined(__MPATH) && !make(install) && \ 256 (empty(.MAKEFLAGS:M-V) || defined(NO_SKIP_MPATH)) 257__MPATH!=find ${S:tA}/ -name \*_if.m 258.endif 259 260# MKMODULESENV is set here so that port makefiles can augment 261# them. 262 263MKMODULESENV+= MAKEOBJDIRPREFIX=${.OBJDIR}/modules KMODDIR=${KODIR} 264MKMODULESENV+= MACHINE_CPUARCH=${MACHINE_CPUARCH} 265MKMODULESENV+= MACHINE=${MACHINE} MACHINE_ARCH=${MACHINE_ARCH} 266MKMODULESENV+= MODULES_EXTRA="${MODULES_EXTRA}" WITHOUT_MODULES="${WITHOUT_MODULES}" 267MKMODULESENV+= ARCH_FLAGS="${ARCH_FLAGS}" 268.if (${KERN_IDENT} == LINT) 269MKMODULESENV+= ALL_MODULES=LINT 270.endif 271.if defined(MODULES_OVERRIDE) 272MKMODULESENV+= MODULES_OVERRIDE="${MODULES_OVERRIDE}" 273.endif 274.if defined(DEBUG) 275MKMODULESENV+= DEBUG_FLAGS="${DEBUG}" 276.endif 277.if !defined(NO_MODULES) 278MKMODULESENV+= __MPATH="${__MPATH}" 279.endif 280 281# Detect kernel config options that force stack frames to be turned on. 282DDB_ENABLED!= grep DDB opt_ddb.h || true ; echo 283DTR_ENABLED!= grep KDTRACE_FRAME opt_kdtrace.h || true ; echo 284HWPMC_ENABLED!= grep HWPMC opt_hwpmc_hooks.h || true ; echo 285