1# $FreeBSD: stable/11/sys/conf/kern.pre.mk 360656 2020-05-05 11:14:28Z dim $
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: ${.CURDIR}
29
30# Can be overridden by makeoptions or /etc/make.conf
31KERNEL_KO?=	kernel
32KERNEL?=	kernel
33KODIR?=		/boot/${KERNEL}
34LDSCRIPT_NAME?=	ldscript.$M
35LDSCRIPT?=	$S/conf/${LDSCRIPT_NAME}
36
37M=		${MACHINE}
38
39AWK?=		awk
40CP?=		cp
41LINT?=		lint
42NM?=		nm
43OBJCOPY?=	objcopy
44SIZE?=		size
45
46.if defined(DEBUG)
47_MINUS_O=	-O
48CTFFLAGS+=	-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 ${COMPILER_TYPE} == "clang"
58COPTFLAGS?=-O2 -pipe
59.else
60COPTFLAGS?=-O2 -frename-registers -pipe
61.endif
62.else
63COPTFLAGS?=${_MINUS_O} -pipe
64.endif
65.if !empty(COPTFLAGS:M-O[23s]) && empty(COPTFLAGS:M-fno-strict-aliasing)
66COPTFLAGS+= -fno-strict-aliasing
67.endif
68.if !defined(NO_CPU_COPTFLAGS)
69COPTFLAGS+= ${_CPUCFLAGS}
70.endif
71NOSTDINC= -nostdinc
72
73INCLUDES= ${NOSTDINC} ${INCLMAGIC} -I. -I$S
74
75CFLAGS=	${COPTFLAGS} ${DEBUG}
76CFLAGS+= ${INCLUDES} -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h
77CFLAGS_PARAM_INLINE_UNIT_GROWTH?=100
78CFLAGS_PARAM_LARGE_FUNCTION_GROWTH?=1000
79.if ${MACHINE_CPUARCH} == "mips"
80CFLAGS_ARCH_PARAMS?=--param max-inline-insns-single=1000
81.endif
82CFLAGS.gcc+= -fno-common -fms-extensions -finline-limit=${INLINE_LIMIT}
83CFLAGS.gcc+= --param inline-unit-growth=${CFLAGS_PARAM_INLINE_UNIT_GROWTH}
84CFLAGS.gcc+= --param large-function-growth=${CFLAGS_PARAM_LARGE_FUNCTION_GROWTH}
85.if defined(CFLAGS_ARCH_PARAMS)
86CFLAGS.gcc+=${CFLAGS_ARCH_PARAMS}
87.endif
88.if ${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} < 50000
89WERROR?=	-Wno-error
90.else
91WERROR?=	-Werror
92.endif
93
94# XXX LOCORE means "don't declare C stuff" not "for locore.s".
95ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS} ${ASM_CFLAGS.${.IMPSRC:T}} 
96
97.if defined(PROFLEVEL) && ${PROFLEVEL} >= 1
98CFLAGS+=	-DGPROF
99CFLAGS.gcc+=	-falign-functions=16
100.if ${PROFLEVEL} >= 2
101CFLAGS+=	-DGPROF4 -DGUPROF
102PROF=		-pg
103.if ${COMPILER_TYPE} == "gcc"
104PROF+=		-mprofiler-epilogue
105.endif
106.else
107PROF=		-pg
108.endif
109.endif
110DEFINED_PROF=	${PROF}
111
112# Put configuration-specific C flags last (except for ${PROF}) so that they
113# can override the others.
114CFLAGS+=	${CONF_CFLAGS}
115
116.if defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mbuild-id}
117LDFLAGS+=	-Wl,--build-id=sha1
118.endif
119
120# Optional linting. This can be overridden in /etc/make.conf.
121LINTFLAGS=	${LINTOBJKERNFLAGS}
122
123NORMAL_C= ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
124NORMAL_S= ${CC:N${CCACHE_BIN}} -c ${ASM_CFLAGS} ${WERROR} ${.IMPSRC}
125PROFILE_C= ${CC} -c ${CFLAGS} ${WERROR} ${.IMPSRC}
126NORMAL_C_NOWERROR= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC}
127
128NORMAL_M= ${AWK} -f $S/tools/makeobjops.awk ${.IMPSRC} -c ; \
129	  ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.PREFIX}.c
130
131NORMAL_FW= uudecode -o ${.TARGET} ${.ALLSRC}
132NORMAL_FWO= ${LD} -b binary --no-warn-mismatch -d -warn-common -r \
133	-m ${LD_EMULATION} -o ${.TARGET} ${.ALLSRC:M*.fw}
134
135# Common for dtrace / zfs
136CDDL_CFLAGS=	-DFREEBSD_NAMECACHE -nostdinc -I$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
137CDDL_CFLAGS+=	-include $S/cddl/compat/opensolaris/sys/debug_compat.h
138CDDL_C=		${CC} -c ${CDDL_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
139
140# Special flags for managing the compat compiles for ZFS
141ZFS_CFLAGS=	-DBUILDING_ZFS -I$S/cddl/contrib/opensolaris/uts/common/fs/zfs
142ZFS_CFLAGS+=	-I$S/cddl/contrib/opensolaris/uts/common/fs/zfs/lua
143ZFS_CFLAGS+=	-I$S/cddl/contrib/opensolaris/uts/common/zmod
144ZFS_CFLAGS+=	-I$S/cddl/contrib/opensolaris/common/zfs
145ZFS_CFLAGS+=	${CDDL_CFLAGS}
146ZFS_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${ZFS_CFLAGS}
147ZFS_C=		${CC} -c ${ZFS_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
148ZFS_S=		${CC} -c ${ZFS_ASM_CFLAGS} ${WERROR} ${.IMPSRC}
149
150# Special flags for managing the compat compiles for DTrace
151DTRACE_CFLAGS=	-DBUILDING_DTRACE ${CDDL_CFLAGS} -I$S/cddl/dev/dtrace -I$S/cddl/dev/dtrace/${MACHINE_CPUARCH}
152.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386"
153DTRACE_CFLAGS+=	-I$S/cddl/contrib/opensolaris/uts/intel -I$S/cddl/dev/dtrace/x86
154.endif
155DTRACE_CFLAGS+=	-I$S/cddl/contrib/opensolaris/common/util -I$S -DDIS_MEM -DSMP
156DTRACE_ASM_CFLAGS=	-x assembler-with-cpp -DLOCORE ${DTRACE_CFLAGS}
157DTRACE_C=	${CC} -c ${DTRACE_CFLAGS}	${WERROR} ${PROF} ${.IMPSRC}
158DTRACE_S=	${CC} -c ${DTRACE_ASM_CFLAGS}	${WERROR} ${.IMPSRC}
159
160# Special flags for managing the compat compiles for DTrace/FBT
161FBT_CFLAGS=	-DBUILDING_DTRACE -nostdinc -I$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}
162.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386"
163FBT_CFLAGS+=	-I$S/cddl/dev/fbt/x86
164.endif
165FBT_C=		${CC} -c ${FBT_CFLAGS}		${WERROR} ${PROF} ${.IMPSRC}
166
167.if ${MK_CTF} != "no"
168NORMAL_CTFCONVERT=	${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
169.elif ${MAKE_VERSION} >= 5201111300
170NORMAL_CTFCONVERT=
171.else
172NORMAL_CTFCONVERT=	@:
173.endif
174
175NORMAL_LINT=	${LINT} ${LINTFLAGS} ${CFLAGS:M-[DIU]*} ${.IMPSRC}
176
177# Linux Kernel Programming Interface C-flags
178LINUXKPI_INCLUDES=	-I$S/compat/linuxkpi/common/include
179LINUXKPI_C=		${NORMAL_C} ${LINUXKPI_INCLUDES}
180
181# Infiniband C flags.  Correct include paths and omit errors that linux
182# does not honor.
183OFEDINCLUDES=	-I$S/ofed/include -I$S/ofed/include/uapi ${LINUXKPI_INCLUDES}
184OFEDNOERR=	-Wno-cast-qual -Wno-pointer-arith
185OFEDCFLAGS=	${CFLAGS:N-I*} -DCONFIG_INFINIBAND_USER_MEM \
186		${OFEDINCLUDES} ${CFLAGS:M-I*} ${OFEDNOERR}
187OFED_C_NOIMP=	${CC} -c -o ${.TARGET} ${OFEDCFLAGS} ${WERROR} ${PROF}
188OFED_C=		${OFED_C_NOIMP} ${.IMPSRC}
189
190# mlxfw C flags.
191MLXFW_C=	${OFED_C_NOIMP} \
192		-I$S/contrib/xz-embedded/freebsd \
193		-I$S/contrib/xz-embedded/linux/lib/xz \
194		${.IMPSRC}
195
196GEN_CFILES= $S/$M/$M/genassym.c ${MFILES:T:S/.m$/.c/}
197SYSTEM_CFILES= config.c env.c hints.c vnode_if.c
198SYSTEM_DEP= Makefile ${SYSTEM_OBJS}
199SYSTEM_OBJS= locore.o ${MDOBJS} ${OBJS}
200SYSTEM_OBJS+= ${SYSTEM_CFILES:.c=.o}
201SYSTEM_OBJS+= hack.pico
202
203MD_ROOT_SIZE_CONFIGURED!=	grep MD_ROOT_SIZE opt_md.h || true ; echo
204.if ${MFS_IMAGE:Uno} != "no"
205.if empty(MD_ROOT_SIZE_CONFIGURED)
206SYSTEM_OBJS+= embedfs_${MFS_IMAGE:T:R}.o
207.endif
208.endif
209SYSTEM_LD= @${LD} -m ${LD_EMULATION} -Bdynamic -T ${LDSCRIPT} ${_LDFLAGS} \
210	--no-warn-mismatch --warn-common --export-dynamic \
211	--dynamic-linker /red/herring \
212	-o ${.TARGET} -X ${SYSTEM_OBJS} vers.o
213SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \
214	${SIZE} ${.TARGET} ; chmod 755 ${.TARGET}
215SYSTEM_DEP+= ${LDSCRIPT}
216
217# Calculate path for .m files early, if needed.
218.if !defined(NO_MODULES) && !defined(__MPATH)
219__MPATH!=find ${S:tA}/ -name \*_if.m
220.endif
221
222# MKMODULESENV is set here so that port makefiles can augment
223# them.
224
225MKMODULESENV+=	MAKEOBJDIRPREFIX=${.OBJDIR}/modules KMODDIR=${KODIR}
226MKMODULESENV+=	MACHINE_CPUARCH=${MACHINE_CPUARCH}
227MKMODULESENV+=	MACHINE=${MACHINE} MACHINE_ARCH=${MACHINE_ARCH}
228MKMODULESENV+=	MODULES_EXTRA="${MODULES_EXTRA}" WITHOUT_MODULES="${WITHOUT_MODULES}"
229MKMODULESENV+=	ARCH_FLAGS="${ARCH_FLAGS}"
230.if (${KERN_IDENT} == LINT)
231MKMODULESENV+=	ALL_MODULES=LINT
232.endif
233.if defined(MODULES_OVERRIDE)
234MKMODULESENV+=	MODULES_OVERRIDE="${MODULES_OVERRIDE}"
235.endif
236.if defined(DEBUG)
237MKMODULESENV+=	DEBUG_FLAGS="${DEBUG}"
238.endif
239.if !defined(NO_MODULES)
240MKMODULESENV+=	__MPATH="${__MPATH}"
241.endif
242
243# Architecture and output format arguments for objcopy to convert image to
244# object file
245
246.if ${MFS_IMAGE:Uno} != "no"
247.if empty(MD_ROOT_SIZE_CONFIGURED)
248.if !defined(EMBEDFS_FORMAT.${MACHINE_ARCH})
249EMBEDFS_FORMAT.${MACHINE_ARCH}!= awk -F'"' '/OUTPUT_FORMAT/ {print $$2}' ${LDSCRIPT}
250.if empty(EMBEDFS_FORMAT.${MACHINE_ARCH})
251.undef EMBEDFS_FORMAT.${MACHINE_ARCH}
252.endif
253.endif
254
255.if !defined(EMBEDFS_ARCH.${MACHINE_ARCH})
256EMBEDFS_ARCH.${MACHINE_ARCH}!= sed -n '/OUTPUT_ARCH/s/.*(\(.*\)).*/\1/p' ${LDSCRIPT}
257.if empty(EMBEDFS_ARCH.${MACHINE_ARCH})
258.undef EMBEDFS_ARCH.${MACHINE_ARCH}
259.endif
260.endif
261
262EMBEDFS_FORMAT.arm?=		elf32-littlearm
263EMBEDFS_FORMAT.armv6?=		elf32-littlearm
264EMBEDFS_FORMAT.aarch64?=	elf64-littleaarch64
265EMBEDFS_FORMAT.mips?=		elf32-tradbigmips
266EMBEDFS_FORMAT.mipsel?=		elf32-tradlittlemips
267EMBEDFS_FORMAT.mips64?=		elf64-tradbigmips
268EMBEDFS_FORMAT.mips64el?=	elf64-tradlittlemips
269EMBEDFS_FORMAT.riscv64?=	elf64-littleriscv
270.endif
271.endif
272
273# Detect kernel config options that force stack frames to be turned on.
274DDB_ENABLED!=	grep DDB opt_ddb.h || true ; echo
275DTR_ENABLED!=	grep KDTRACE_FRAME opt_kdtrace.h || true ; echo
276HWPMC_ENABLED!=	grep HWPMC opt_hwpmc_hooks.h || true ; echo
277