3 # Part of a unified Makefile for building kernels. This part contains all
4 # of the definitions that need to be before %BEFORE_DEPEND.
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_)
19 .include <bsd.compiler.mk>
20 .include "kern.opts.mk"
22 # The kernel build always occurs in the object directory which is .CURDIR.
23 .if ${.MAKE.MODE:Unormal:Mmeta}
24 .MAKE.MODE+= curdirOk=yes
27 # The kernel build always expects .OBJDIR=.CURDIR.
30 .if defined(NO_OBJWALK) || ${MK_AUTO_OBJ} == "yes"
34 .if !defined(NO_OBJWALK)
38 # Can be overridden by makeoptions or /etc/make.conf
41 KODIR?= /boot/${KERNEL}
42 LDSCRIPT_NAME?= ldscript.$M
43 LDSCRIPT?= $S/conf/${LDSCRIPT_NAME}
57 .if ${MACHINE_CPUARCH} == "powerpc"
58 _MINUS_O= -O # gcc miscompiles some code at -O2
63 .if ${MACHINE_CPUARCH} == "amd64"
64 .if ${COMPILER_TYPE} == "clang"
67 COPTFLAGS?=-O2 -frename-registers -pipe
70 COPTFLAGS?=${_MINUS_O} -pipe
72 .if !empty(COPTFLAGS:M-O[23s]) && empty(COPTFLAGS:M-fno-strict-aliasing)
73 COPTFLAGS+= -fno-strict-aliasing
75 .if !defined(NO_CPU_COPTFLAGS)
76 COPTFLAGS+= ${_CPUCFLAGS}
80 INCLUDES= ${NOSTDINC} ${INCLMAGIC} -I. -I$S -I$S/contrib/ck/include
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}"'
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}
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}}
101 .if defined(PROFLEVEL) && ${PROFLEVEL} >= 1
103 CFLAGS.gcc+= -falign-functions=16
104 .if ${PROFLEVEL} >= 2
105 CFLAGS+= -DGPROF4 -DGUPROF
107 .if ${COMPILER_TYPE} == "gcc"
108 PROF+= -mprofiler-epilogue
114 DEFINED_PROF= ${PROF}
116 KUBSAN_ENABLED!= grep KUBSAN opt_global.h || true ; echo
117 .if !empty(KUBSAN_ENABLED)
118 SAN_CFLAGS+= -fsanitize=undefined
121 COVERAGE_ENABLED!= grep COVERAGE opt_global.h || true ; echo
122 .if !empty(COVERAGE_ENABLED)
123 .if ${COMPILER_TYPE} == "clang" || \
124 (${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} >= 80100)
125 SAN_CFLAGS+= -fsanitize-coverage=trace-pc,trace-cmp
127 SAN_CFLAGS+= -fsanitize-coverage=trace-pc
131 CFLAGS+= ${SAN_CFLAGS}
133 GCOV_ENABLED!= grep GCOV opt_global.h || true ; echo
134 .if !empty(GCOV_ENABLED)
135 .if ${COMPILER_TYPE} == "gcc"
136 GCOV_CFLAGS+= -fprofile-arcs -ftest-coverage
140 CFLAGS+= ${GCOV_CFLAGS}
142 # Put configuration-specific C flags last (except for ${PROF}) so that they
143 # can override the others.
144 CFLAGS+= ${CONF_CFLAGS}
146 .if defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mbuild-id}
147 LDFLAGS+= --build-id=sha1
150 .if (${MACHINE_CPUARCH} == "aarch64" || ${MACHINE_CPUARCH} == "amd64" || \
151 ${MACHINE_CPUARCH} == "i386") && \
152 defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mifunc} == ""
153 .error amd64/arm64/i386 kernel requires linker ifunc support
155 .if ${MACHINE_CPUARCH} == "amd64"
156 LDFLAGS+= -z max-page-size=2097152
157 .if ${LINKER_TYPE} != "lld"
158 LDFLAGS+= -z common-page-size=4096
160 LDFLAGS+= -z notext -z ifunc-noplt
164 NORMAL_C= ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
165 NORMAL_S= ${CC:N${CCACHE_BIN}} -c ${ASM_CFLAGS} ${WERROR} ${.IMPSRC}
166 PROFILE_C= ${CC} -c ${CFLAGS} ${WERROR} ${.IMPSRC}
167 NORMAL_C_NOWERROR= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC}
169 NORMAL_M= ${AWK} -f $S/tools/makeobjops.awk ${.IMPSRC} -c ; \
170 ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.PREFIX}.c
172 NORMAL_FW= uudecode -o ${.TARGET} ${.ALLSRC}
173 NORMAL_FWO= ${LD} -b binary --no-warn-mismatch -d -warn-common -r \
174 -m ${LD_EMULATION} -o ${.TARGET} ${.ALLSRC:M*.fw}
176 # for ZSTD in the kernel (include zstd/lib/freebsd before other CFLAGS)
177 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__ ${.IMPSRC}
179 # Common for dtrace / zfs
180 CDDL_CFLAGS= -DFREEBSD_NAMECACHE -nostdinc -I$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
181 CDDL_CFLAGS+= -include $S/cddl/compat/opensolaris/sys/debug_compat.h
182 CDDL_C= ${CC} -c ${CDDL_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
184 # Special flags for managing the compat compiles for ZFS
185 ZFS_CFLAGS= -DBUILDING_ZFS -I$S/cddl/contrib/opensolaris/uts/common/fs/zfs
186 ZFS_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/common/fs/zfs/lua
187 ZFS_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/common/zmod
188 ZFS_CFLAGS+= -I$S/cddl/contrib/opensolaris/common/zfs
189 ZFS_CFLAGS+= ${CDDL_CFLAGS}
190 ZFS_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${ZFS_CFLAGS}
191 ZFS_C= ${CC} -c ${ZFS_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
192 ZFS_S= ${CC} -c ${ZFS_ASM_CFLAGS} ${WERROR} ${.IMPSRC}
194 # Special flags for managing the compat compiles for DTrace
195 DTRACE_CFLAGS= -DBUILDING_DTRACE ${CDDL_CFLAGS} -I$S/cddl/dev/dtrace -I$S/cddl/dev/dtrace/${MACHINE_CPUARCH}
196 .if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386"
197 DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/uts/intel -I$S/cddl/dev/dtrace/x86
199 DTRACE_CFLAGS+= -I$S/cddl/contrib/opensolaris/common/util -I$S -DDIS_MEM -DSMP
200 DTRACE_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${DTRACE_CFLAGS}
201 DTRACE_C= ${CC} -c ${DTRACE_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
202 DTRACE_S= ${CC} -c ${DTRACE_ASM_CFLAGS} ${WERROR} ${.IMPSRC}
204 # Special flags for managing the compat compiles for DTrace/FBT
205 FBT_CFLAGS= -DBUILDING_DTRACE -nostdinc -I$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}
206 .if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386"
207 FBT_CFLAGS+= -I$S/cddl/dev/fbt/x86
209 FBT_C= ${CC} -c ${FBT_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
211 .if ${MK_CTF} != "no"
212 NORMAL_CTFCONVERT= ${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
213 .elif ${MAKE_VERSION} >= 5201111300
216 NORMAL_CTFCONVERT= @:
219 # Linux Kernel Programming Interface C-flags
220 LINUXKPI_INCLUDES= -I$S/compat/linuxkpi/common/include
221 LINUXKPI_C= ${NORMAL_C} ${LINUXKPI_INCLUDES}
223 # Infiniband C flags. Correct include paths and omit errors that linux
225 OFEDINCLUDES= -I$S/ofed/include -I$S/ofed/include/uapi ${LINUXKPI_INCLUDES}
226 OFEDNOERR= -Wno-cast-qual -Wno-pointer-arith
227 OFEDCFLAGS= ${CFLAGS:N-I*} -DCONFIG_INFINIBAND_USER_MEM \
228 ${OFEDINCLUDES} ${CFLAGS:M-I*} ${OFEDNOERR}
229 OFED_C_NOIMP= ${CC} -c -o ${.TARGET} ${OFEDCFLAGS} ${WERROR} ${PROF}
230 OFED_C= ${OFED_C_NOIMP} ${.IMPSRC}
233 MLXFW_C= ${OFED_C_NOIMP} \
234 -I${SRCTOP}/sys/contrib/xz-embedded/freebsd \
235 -I${SRCTOP}/sys/contrib/xz-embedded/linux/lib/xz \
238 GEN_CFILES= $S/$M/$M/genassym.c ${MFILES:T:S/.m$/.c/}
239 SYSTEM_CFILES= config.c env.c hints.c vnode_if.c
240 SYSTEM_DEP= Makefile ${SYSTEM_OBJS}
241 SYSTEM_OBJS= locore.o ${MDOBJS} ${OBJS}
242 SYSTEM_OBJS+= ${SYSTEM_CFILES:.c=.o}
243 SYSTEM_OBJS+= hack.pico
245 MD_ROOT_SIZE_CONFIGURED!= grep MD_ROOT_SIZE opt_md.h || true ; echo
246 .if ${MFS_IMAGE:Uno} != "no"
247 .if empty(MD_ROOT_SIZE_CONFIGURED)
248 SYSTEM_OBJS+= embedfs_${MFS_IMAGE:T:R}.o
251 SYSTEM_LD= @${LD} -m ${LD_EMULATION} -Bdynamic -T ${LDSCRIPT} ${_LDFLAGS} \
252 --no-warn-mismatch --warn-common --export-dynamic \
253 --dynamic-linker /red/herring \
254 -o ${.TARGET} -X ${SYSTEM_OBJS} vers.o
255 SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \
256 ${SIZE} ${.TARGET} ; chmod 755 ${.TARGET}
257 SYSTEM_DEP+= ${LDSCRIPT}
259 # Calculate path for .m files early, if needed.
260 .if !defined(NO_MODULES) && !defined(__MPATH) && !make(install) && \
261 (empty(.MAKEFLAGS:M-V) || defined(NO_SKIP_MPATH))
262 __MPATH!=find ${S:tA}/ -name \*_if.m
265 # MKMODULESENV is set here so that port makefiles can augment
268 MKMODULESENV+= MAKEOBJDIRPREFIX=${.OBJDIR}/modules KMODDIR=${KODIR}
269 MKMODULESENV+= MACHINE_CPUARCH=${MACHINE_CPUARCH}
270 MKMODULESENV+= MACHINE=${MACHINE} MACHINE_ARCH=${MACHINE_ARCH}
271 MKMODULESENV+= MODULES_EXTRA="${MODULES_EXTRA}" WITHOUT_MODULES="${WITHOUT_MODULES}"
272 MKMODULESENV+= ARCH_FLAGS="${ARCH_FLAGS}"
273 .if (${KERN_IDENT} == LINT)
274 MKMODULESENV+= ALL_MODULES=LINT
276 .if defined(MODULES_OVERRIDE)
277 MKMODULESENV+= MODULES_OVERRIDE="${MODULES_OVERRIDE}"
280 MKMODULESENV+= DEBUG_FLAGS="${DEBUG}"
282 .if !defined(NO_MODULES)
283 MKMODULESENV+= __MPATH="${__MPATH}"
286 # Architecture and output format arguments for objcopy to convert image to
289 .if ${MFS_IMAGE:Uno} != "no"
290 .if empty(MD_ROOT_SIZE_CONFIGURED)
291 .if !defined(EMBEDFS_FORMAT.${MACHINE_ARCH})
292 EMBEDFS_FORMAT.${MACHINE_ARCH}!= awk -F'"' '/OUTPUT_FORMAT/ {print $$2}' ${LDSCRIPT}
293 .if empty(EMBEDFS_FORMAT.${MACHINE_ARCH})
294 .undef EMBEDFS_FORMAT.${MACHINE_ARCH}
298 .if !defined(EMBEDFS_ARCH.${MACHINE_ARCH})
299 EMBEDFS_ARCH.${MACHINE_ARCH}!= sed -n '/OUTPUT_ARCH/s/.*(\(.*\)).*/\1/p' ${LDSCRIPT}
300 .if empty(EMBEDFS_ARCH.${MACHINE_ARCH})
301 .undef EMBEDFS_ARCH.${MACHINE_ARCH}
305 EMBEDFS_FORMAT.arm?= elf32-littlearm
306 EMBEDFS_FORMAT.armv6?= elf32-littlearm
307 EMBEDFS_FORMAT.armv7?= elf32-littlearm
308 EMBEDFS_FORMAT.aarch64?= elf64-littleaarch64
309 EMBEDFS_FORMAT.mips?= elf32-tradbigmips
310 EMBEDFS_FORMAT.mipsel?= elf32-tradlittlemips
311 EMBEDFS_FORMAT.mips64?= elf64-tradbigmips
312 EMBEDFS_FORMAT.mips64el?= elf64-tradlittlemips
313 EMBEDFS_FORMAT.riscv?= elf64-littleriscv
317 # Detect kernel config options that force stack frames to be turned on.
318 DDB_ENABLED!= grep DDB opt_ddb.h || true ; echo
319 DTR_ENABLED!= grep KDTRACE_FRAME opt_kdtrace.h || true ; echo
320 HWPMC_ENABLED!= grep HWPMC opt_hwpmc_hooks.h || true ; echo