xref: /freebsd/sys/conf/kern.pre.mk (revision 4f52dfbb) 
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
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+= -fno-common -fms-extensions -finline-limit=${INLINE_LIMIT}
90CFLAGS.gcc+= --param inline-unit-growth=${CFLAGS_PARAM_INLINE_UNIT_GROWTH}
91CFLAGS.gcc+= --param large-function-growth=${CFLAGS_PARAM_LARGE_FUNCTION_GROWTH}
92.if defined(CFLAGS_ARCH_PARAMS)
93CFLAGS.gcc+=${CFLAGS_ARCH_PARAMS}
94.endif
95WERROR?= -Werror
96
97# XXX LOCORE means "don't declare C stuff" not "for locore.s".
98ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS} ${ASM_CFLAGS.${.IMPSRC:T}}
99
100.if defined(PROFLEVEL) && ${PROFLEVEL} >= 1
101CFLAGS+=	-DGPROF
102CFLAGS.gcc+=	-falign-functions=16
103.if ${PROFLEVEL} >= 2
104CFLAGS+=	-DGPROF4 -DGUPROF
105PROF=		-pg
106.if ${COMPILER_TYPE} == "gcc"
107PROF+=		-mprofiler-epilogue
108.endif
109.else
110PROF=		-pg
111.endif
112.endif
113DEFINED_PROF=	${PROF}
114
115# Put configuration-specific C flags last (except for ${PROF}) so that they
116# can override the others.
117CFLAGS+=	${CONF_CFLAGS}
118
119.if defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mbuild-id}
120LDFLAGS+=	-Wl,--build-id=sha1
121.endif
122
123.if ${MACHINE_CPUARCH} == "amd64"
124LDFLAGS+=	-Wl,-z max-page-size=2097152 -Wl,-z common-page-size=4096
125.endif
126
127NORMAL_C= ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
128NORMAL_S= ${CC:N${CCACHE_BIN}} -c ${ASM_CFLAGS} ${WERROR} ${.IMPSRC}
129PROFILE_C= ${CC} -c ${CFLAGS} ${WERROR} ${.IMPSRC}
130NORMAL_C_NOWERROR= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC}
131
132NORMAL_M= ${AWK} -f $S/tools/makeobjops.awk ${.IMPSRC} -c ; \
133	  ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.PREFIX}.c
134
135NORMAL_FW= uudecode -o ${.TARGET} ${.ALLSRC}
136NORMAL_FWO= ${LD} -b binary --no-warn-mismatch -d -warn-common -r \
137	-m ${LD_EMULATION} -o ${.TARGET} ${.ALLSRC:M*.fw}
138
139# for ZSTD in the kernel (include zstd/lib/freebsd before other CFLAGS)
140ZSTD_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__ ${.IMPSRC}
141
142# Common for dtrace / zfs
143CDDL_CFLAGS=	-DFREEBSD_NAMECACHE -nostdinc -I$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
144CDDL_CFLAGS+=	-include $S/cddl/compat/opensolaris/sys/debug_compat.h
145CDDL_C=		${CC} -c ${CDDL_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
146
147# Special flags for managing the compat compiles for ZFS
148ZFS_CFLAGS=	-DBUILDING_ZFS -I$S/cddl/contrib/opensolaris/uts/common/fs/zfs
149ZFS_CFLAGS+=	-I$S/cddl/contrib/opensolaris/uts/common/fs/zfs/lua
150ZFS_CFLAGS+=	-I$S/cddl/contrib/opensolaris/uts/common/zmod
151ZFS_CFLAGS+=	-I$S/cddl/contrib/opensolaris/common/zfs
152ZFS_CFLAGS+=	${CDDL_CFLAGS}
153ZFS_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${ZFS_CFLAGS}
154ZFS_C=		${CC} -c ${ZFS_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
155ZFS_S=		${CC} -c ${ZFS_ASM_CFLAGS} ${WERROR} ${.IMPSRC}
156
157# Special flags for managing the compat compiles for DTrace
158DTRACE_CFLAGS=	-DBUILDING_DTRACE ${CDDL_CFLAGS} -I$S/cddl/dev/dtrace -I$S/cddl/dev/dtrace/${MACHINE_CPUARCH}
159.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386"
160DTRACE_CFLAGS+=	-I$S/cddl/contrib/opensolaris/uts/intel -I$S/cddl/dev/dtrace/x86
161.endif
162DTRACE_CFLAGS+=	-I$S/cddl/contrib/opensolaris/common/util -I$S -DDIS_MEM -DSMP
163DTRACE_ASM_CFLAGS=	-x assembler-with-cpp -DLOCORE ${DTRACE_CFLAGS}
164DTRACE_C=	${CC} -c ${DTRACE_CFLAGS}	${WERROR} ${PROF} ${.IMPSRC}
165DTRACE_S=	${CC} -c ${DTRACE_ASM_CFLAGS}	${WERROR} ${.IMPSRC}
166
167# Special flags for managing the compat compiles for DTrace/FBT
168FBT_CFLAGS=	-DBUILDING_DTRACE -nostdinc -I$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}
169.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386"
170FBT_CFLAGS+=	-I$S/cddl/dev/fbt/x86
171.endif
172FBT_C=		${CC} -c ${FBT_CFLAGS}		${WERROR} ${PROF} ${.IMPSRC}
173
174.if ${MK_CTF} != "no"
175NORMAL_CTFCONVERT=	${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
176.elif ${MAKE_VERSION} >= 5201111300
177NORMAL_CTFCONVERT=
178.else
179NORMAL_CTFCONVERT=	@:
180.endif
181
182# Linux Kernel Programming Interface C-flags
183LINUXKPI_INCLUDES=	-I$S/compat/linuxkpi/common/include
184LINUXKPI_C=		${NORMAL_C} ${LINUXKPI_INCLUDES}
185
186# Infiniband C flags.  Correct include paths and omit errors that linux
187# does not honor.
188OFEDINCLUDES=	-I$S/ofed/include -I$S/ofed/include/uapi ${LINUXKPI_INCLUDES}
189OFEDNOERR=	-Wno-cast-qual -Wno-pointer-arith
190OFEDCFLAGS=	${CFLAGS:N-I*} -DCONFIG_INFINIBAND_USER_MEM \
191		${OFEDINCLUDES} ${CFLAGS:M-I*} ${OFEDNOERR}
192OFED_C_NOIMP=	${CC} -c -o ${.TARGET} ${OFEDCFLAGS} ${WERROR} ${PROF}
193OFED_C=		${OFED_C_NOIMP} ${.IMPSRC}
194
195GEN_CFILES= $S/$M/$M/genassym.c ${MFILES:T:S/.m$/.c/}
196SYSTEM_CFILES= config.c env.c hints.c vnode_if.c
197SYSTEM_DEP= Makefile ${SYSTEM_OBJS}
198SYSTEM_OBJS= locore.o ${MDOBJS} ${OBJS}
199SYSTEM_OBJS+= ${SYSTEM_CFILES:.c=.o}
200SYSTEM_OBJS+= hack.pico
201
202MD_ROOT_SIZE_CONFIGURED!=	grep MD_ROOT_SIZE opt_md.h || true ; echo
203.if ${MFS_IMAGE:Uno} != "no"
204.if empty(MD_ROOT_SIZE_CONFIGURED)
205SYSTEM_OBJS+= embedfs_${MFS_IMAGE:T:R}.o
206.endif
207.endif
208SYSTEM_LD= @${LD} -m ${LD_EMULATION} -Bdynamic -T ${LDSCRIPT} ${_LDFLAGS} \
209	--no-warn-mismatch --warn-common --export-dynamic \
210	--dynamic-linker /red/herring \
211	-o ${.TARGET} -X ${SYSTEM_OBJS} vers.o
212SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \
213	${SIZE} ${.TARGET} ; chmod 755 ${.TARGET}
214SYSTEM_DEP+= ${LDSCRIPT}
215
216# Calculate path for .m files early, if needed.
217.if !defined(NO_MODULES) && !defined(__MPATH) && !make(install) && \
218    (empty(.MAKEFLAGS:M-V) || defined(NO_SKIP_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 objdump 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.armv7?=		elf32-littlearm
265EMBEDFS_FORMAT.aarch64?=	elf64-littleaarch64
266EMBEDFS_FORMAT.mips?=		elf32-tradbigmips
267EMBEDFS_FORMAT.mipsel?=		elf32-tradlittlemips
268EMBEDFS_FORMAT.mips64?=		elf64-tradbigmips
269EMBEDFS_FORMAT.mips64el?=	elf64-tradlittlemips
270EMBEDFS_FORMAT.riscv?=		elf64-littleriscv
271.endif
272.endif
273
274# Detect kernel config options that force stack frames to be turned on.
275DDB_ENABLED!=	grep DDB opt_ddb.h || true ; echo
276DTR_ENABLED!=	grep KDTRACE_FRAME opt_kdtrace.h || true ; echo
277HWPMC_ENABLED!=	grep HWPMC opt_hwpmc_hooks.h || true ; echo
278