xref: /freebsd/sys/conf/kern.pre.mk (revision d6b92ffa) 
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.if defined(NO_OBJ) || ${MK_AUTO_OBJ} == "yes"
28NO_OBJ=		t
29NO_MODULES_OBJ=	t
30.endif
31.if !defined(NO_OBJ)
32_obj=		obj
33.endif
34
35# Can be overridden by makeoptions or /etc/make.conf
36KERNEL_KO?=	kernel
37KERNEL?=	kernel
38KODIR?=		/boot/${KERNEL}
39LDSCRIPT_NAME?=	ldscript.$M
40LDSCRIPT?=	$S/conf/${LDSCRIPT_NAME}
41
42M=		${MACHINE}
43
44AWK?=		awk
45CP?=		cp
46LINT?=		lint
47NM?=		nm
48OBJCOPY?=	objcopy
49SIZE?=		size
50
51.if defined(DEBUG)
52_MINUS_O=	-O
53CTFFLAGS+=	-g
54.else
55.if ${MACHINE_CPUARCH} == "powerpc"
56_MINUS_O=	-O	# gcc miscompiles some code at -O2
57.else
58_MINUS_O=	-O2
59.endif
60.endif
61.if ${MACHINE_CPUARCH} == "amd64"
62.if ${COMPILER_TYPE} == "clang"
63COPTFLAGS?=-O2 -pipe
64.else
65COPTFLAGS?=-O2 -frename-registers -pipe
66.endif
67.else
68COPTFLAGS?=${_MINUS_O} -pipe
69.endif
70.if !empty(COPTFLAGS:M-O[23s]) && empty(COPTFLAGS:M-fno-strict-aliasing)
71COPTFLAGS+= -fno-strict-aliasing
72.endif
73.if !defined(NO_CPU_COPTFLAGS)
74COPTFLAGS+= ${_CPUCFLAGS}
75.endif
76NOSTDINC= -nostdinc
77
78INCLUDES= ${NOSTDINC} ${INCLMAGIC} -I. -I$S
79
80CFLAGS=	${COPTFLAGS} ${DEBUG}
81CFLAGS+= ${INCLUDES} -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h
82CFLAGS_PARAM_INLINE_UNIT_GROWTH?=100
83CFLAGS_PARAM_LARGE_FUNCTION_GROWTH?=1000
84.if ${MACHINE_CPUARCH} == "mips"
85CFLAGS_ARCH_PARAMS?=--param max-inline-insns-single=1000 -DMACHINE_ARCH='"${MACHINE_ARCH}"'
86.endif
87CFLAGS.gcc+= -fno-common -fms-extensions -finline-limit=${INLINE_LIMIT}
88CFLAGS.gcc+= --param inline-unit-growth=${CFLAGS_PARAM_INLINE_UNIT_GROWTH}
89CFLAGS.gcc+= --param large-function-growth=${CFLAGS_PARAM_LARGE_FUNCTION_GROWTH}
90.if defined(CFLAGS_ARCH_PARAMS)
91CFLAGS.gcc+=${CFLAGS_ARCH_PARAMS}
92.endif
93WERROR?= -Werror
94
95# XXX LOCORE means "don't declare C stuff" not "for locore.s".
96ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS} ${ASM_CFLAGS.${.IMPSRC:T}}
97
98.if defined(PROFLEVEL) && ${PROFLEVEL} >= 1
99CFLAGS+=	-DGPROF
100CFLAGS.gcc+=	-falign-functions=16
101.if ${PROFLEVEL} >= 2
102CFLAGS+=	-DGPROF4 -DGUPROF
103PROF=		-pg
104.if ${COMPILER_TYPE} == "gcc"
105PROF+=		-mprofiler-epilogue
106.endif
107.else
108PROF=		-pg
109.endif
110.endif
111DEFINED_PROF=	${PROF}
112
113# Put configuration-specific C flags last (except for ${PROF}) so that they
114# can override the others.
115CFLAGS+=	${CONF_CFLAGS}
116
117.if defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mbuild-id}
118LDFLAGS+=	-Wl,--build-id=sha1
119.endif
120
121# Optional linting. This can be overridden in /etc/make.conf.
122LINTFLAGS=	${LINTOBJKERNFLAGS}
123
124NORMAL_C= ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
125NORMAL_S= ${CC:N${CCACHE_BIN}} -c ${ASM_CFLAGS} ${WERROR} ${.IMPSRC}
126PROFILE_C= ${CC} -c ${CFLAGS} ${WERROR} ${.IMPSRC}
127NORMAL_C_NOWERROR= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC}
128
129NORMAL_M= ${AWK} -f $S/tools/makeobjops.awk ${.IMPSRC} -c ; \
130	  ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.PREFIX}.c
131
132NORMAL_FW= uudecode -o ${.TARGET} ${.ALLSRC}
133NORMAL_FWO= ${LD} -b binary --no-warn-mismatch -d -warn-common -r \
134	-m ${LD_EMULATION} -o ${.TARGET} ${.ALLSRC:M*.fw}
135
136# Common for dtrace / zfs
137CDDL_CFLAGS=	-DFREEBSD_NAMECACHE -nostdinc -I$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
138CDDL_CFLAGS+=	-include $S/cddl/compat/opensolaris/sys/debug_compat.h
139CDDL_C=		${CC} -c ${CDDL_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
140
141# Special flags for managing the compat compiles for ZFS
142ZFS_CFLAGS=	-DBUILDING_ZFS -I$S/cddl/contrib/opensolaris/uts/common/fs/zfs -I$S/cddl/contrib/opensolaris/uts/common/zmod -I$S/cddl/contrib/opensolaris/common/zfs ${CDDL_CFLAGS}
143ZFS_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${ZFS_CFLAGS}
144ZFS_C=		${CC} -c ${ZFS_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
145ZFS_S=		${CC} -c ${ZFS_ASM_CFLAGS} ${WERROR} ${.IMPSRC}
146
147# Special flags for managing the compat compiles for DTrace
148DTRACE_CFLAGS=	-DBUILDING_DTRACE ${CDDL_CFLAGS} -I$S/cddl/dev/dtrace -I$S/cddl/dev/dtrace/${MACHINE_CPUARCH}
149.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386"
150DTRACE_CFLAGS+=	-I$S/cddl/contrib/opensolaris/uts/intel -I$S/cddl/dev/dtrace/x86
151.endif
152DTRACE_CFLAGS+=	-I$S/cddl/contrib/opensolaris/common/util -I$S -DDIS_MEM -DSMP
153DTRACE_ASM_CFLAGS=	-x assembler-with-cpp -DLOCORE ${DTRACE_CFLAGS}
154DTRACE_C=	${CC} -c ${DTRACE_CFLAGS}	${WERROR} ${PROF} ${.IMPSRC}
155DTRACE_S=	${CC} -c ${DTRACE_ASM_CFLAGS}	${WERROR} ${.IMPSRC}
156
157# Special flags for managing the compat compiles for DTrace/FBT
158FBT_CFLAGS=	-DBUILDING_DTRACE -nostdinc -I$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}
159.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386"
160FBT_CFLAGS+=	-I$S/cddl/dev/fbt/x86
161.endif
162FBT_C=		${CC} -c ${FBT_CFLAGS}		${WERROR} ${PROF} ${.IMPSRC}
163
164.if ${MK_CTF} != "no"
165NORMAL_CTFCONVERT=	${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
166.elif ${MAKE_VERSION} >= 5201111300
167NORMAL_CTFCONVERT=
168.else
169NORMAL_CTFCONVERT=	@:
170.endif
171
172NORMAL_LINT=	${LINT} ${LINTFLAGS} ${CFLAGS:M-[DIU]*} ${.IMPSRC}
173
174# Linux Kernel Programming Interface C-flags
175LINUXKPI_INCLUDES=	-I$S/compat/linuxkpi/common/include
176LINUXKPI_C=		${NORMAL_C} ${LINUXKPI_INCLUDES}
177
178# Infiniband C flags.  Correct include paths and omit errors that linux
179# does not honor.
180OFEDINCLUDES=	-I$S/ofed/include ${LINUXKPI_INCLUDES}
181OFEDNOERR=	-Wno-cast-qual -Wno-pointer-arith
182OFEDCFLAGS=	${CFLAGS:N-I*} ${OFEDINCLUDES} ${CFLAGS:M-I*} ${OFEDNOERR}
183OFED_C_NOIMP=	${CC} -c -o ${.TARGET} ${OFEDCFLAGS} ${WERROR} ${PROF}
184OFED_C=		${OFED_C_NOIMP} ${.IMPSRC}
185
186GEN_CFILES= $S/$M/$M/genassym.c ${MFILES:T:S/.m$/.c/}
187SYSTEM_CFILES= config.c env.c hints.c vnode_if.c
188SYSTEM_DEP= Makefile ${SYSTEM_OBJS}
189SYSTEM_OBJS= locore.o ${MDOBJS} ${OBJS}
190SYSTEM_OBJS+= ${SYSTEM_CFILES:.c=.o}
191SYSTEM_OBJS+= hack.pico
192
193MD_ROOT_SIZE_CONFIGURED!=	grep MD_ROOT_SIZE opt_md.h || true ; echo
194.if ${MFS_IMAGE:Uno} != "no"
195.if empty(MD_ROOT_SIZE_CONFIGURED)
196SYSTEM_OBJS+= embedfs_${MFS_IMAGE:T:R}.o
197.endif
198.endif
199SYSTEM_LD= @${LD} -m ${LD_EMULATION} -Bdynamic -T ${LDSCRIPT} ${_LDFLAGS} \
200	--no-warn-mismatch --warn-common --export-dynamic \
201	--dynamic-linker /red/herring \
202	-o ${.TARGET} -X ${SYSTEM_OBJS} vers.o
203SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \
204	${SIZE} ${.TARGET} ; chmod 755 ${.TARGET}
205SYSTEM_DEP+= ${LDSCRIPT}
206
207# Calculate path for .m files early, if needed.
208.if !defined(NO_MODULES) && !defined(__MPATH) && !make(install)
209__MPATH!=find ${S:tA}/ -name \*_if.m
210.endif
211
212# MKMODULESENV is set here so that port makefiles can augment
213# them.
214
215MKMODULESENV+=	MAKEOBJDIRPREFIX=${.OBJDIR}/modules KMODDIR=${KODIR}
216MKMODULESENV+=	MACHINE_CPUARCH=${MACHINE_CPUARCH}
217MKMODULESENV+=	MACHINE=${MACHINE} MACHINE_ARCH=${MACHINE_ARCH}
218MKMODULESENV+=	MODULES_EXTRA="${MODULES_EXTRA}" WITHOUT_MODULES="${WITHOUT_MODULES}"
219MKMODULESENV+=	ARCH_FLAGS="${ARCH_FLAGS}"
220.if (${KERN_IDENT} == LINT)
221MKMODULESENV+=	ALL_MODULES=LINT
222.endif
223.if defined(MODULES_OVERRIDE)
224MKMODULESENV+=	MODULES_OVERRIDE="${MODULES_OVERRIDE}"
225.endif
226.if defined(DEBUG)
227MKMODULESENV+=	DEBUG_FLAGS="${DEBUG}"
228.endif
229.if !defined(NO_MODULES)
230MKMODULESENV+=	__MPATH="${__MPATH}"
231.endif
232
233# Architecture and output format arguments for objdump to convert image to
234# object file
235
236.if ${MFS_IMAGE:Uno} != "no"
237.if empty(MD_ROOT_SIZE_CONFIGURED)
238.if !defined(EMBEDFS_FORMAT.${MACHINE_ARCH})
239EMBEDFS_FORMAT.${MACHINE_ARCH}!= awk -F'"' '/OUTPUT_FORMAT/ {print $$2}' ${LDSCRIPT}
240.if empty(EMBEDFS_FORMAT.${MACHINE_ARCH})
241.undef EMBEDFS_FORMAT.${MACHINE_ARCH}
242.endif
243.endif
244
245.if !defined(EMBEDFS_ARCH.${MACHINE_ARCH})
246EMBEDFS_ARCH.${MACHINE_ARCH}!= sed -n '/OUTPUT_ARCH/s/.*(\(.*\)).*/\1/p' ${LDSCRIPT}
247.if empty(EMBEDFS_ARCH.${MACHINE_ARCH})
248.undef EMBEDFS_ARCH.${MACHINE_ARCH}
249.endif
250.endif
251
252EMBEDFS_FORMAT.arm?=		elf32-littlearm
253EMBEDFS_FORMAT.armv6?=		elf32-littlearm
254EMBEDFS_FORMAT.aarch64?=	elf64-littleaarch64
255EMBEDFS_FORMAT.mips?=		elf32-tradbigmips
256EMBEDFS_FORMAT.mipsel?=		elf32-tradlittlemips
257EMBEDFS_FORMAT.mips64?=		elf64-tradbigmips
258EMBEDFS_FORMAT.mips64el?=	elf64-tradlittlemips
259EMBEDFS_FORMAT.riscv?=		elf64-littleriscv
260.endif
261.endif
262
263# Detect kernel config options that force stack frames to be turned on.
264DDB_ENABLED!=	grep DDB opt_ddb.h || true ; echo
265DTR_ENABLED!=	grep KDTRACE_FRAME opt_kdtrace.h || true ; echo
266HWPMC_ENABLED!=	grep HWPMC opt_hwpmc_hooks.h || true ; echo
267