xref: /freebsd/sys/conf/kern.pre.mk (revision 5dae51da3da0cc94d17bd67b308fad304ebec7e0) 
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 ${.MAKE.MODE:Unormal:Mmeta}
24.MAKE.MODE+=	curdirOk=yes
25.endif
26
27# Can be overridden by makeoptions or /etc/make.conf
28KERNEL_KO?=	kernel
29KERNEL?=	kernel
30KODIR?=		/boot/${KERNEL}
31LDSCRIPT_NAME?=	ldscript.$M
32LDSCRIPT?=	$S/conf/${LDSCRIPT_NAME}
33
34M=		${MACHINE}
35
36AWK?=		awk
37CP?=		cp
38LINT?=		lint
39NM?=		nm
40OBJCOPY?=	objcopy
41SIZE?=		size
42
43.if defined(DEBUG)
44_MINUS_O=	-O
45CTFFLAGS+=	-g
46.else
47.if ${MACHINE_CPUARCH} == "powerpc"
48_MINUS_O=	-O	# gcc miscompiles some code at -O2
49.else
50_MINUS_O=	-O2
51.endif
52.endif
53.if ${MACHINE_CPUARCH} == "amd64"
54.if ${COMPILER_TYPE} == "clang"
55COPTFLAGS?=-O2 -pipe
56.else
57COPTFLAGS?=-O2 -frename-registers -pipe
58.endif
59.else
60COPTFLAGS?=${_MINUS_O} -pipe
61.endif
62.if !empty(COPTFLAGS:M-O[23s]) && empty(COPTFLAGS:M-fno-strict-aliasing)
63COPTFLAGS+= -fno-strict-aliasing
64.endif
65.if !defined(NO_CPU_COPTFLAGS)
66COPTFLAGS+= ${_CPUCFLAGS}
67.endif
68NOSTDINC= -nostdinc
69
70INCLUDES= ${NOSTDINC} ${INCLMAGIC} -I. -I$S
71
72CFLAGS=	${COPTFLAGS} ${DEBUG}
73CFLAGS+= ${INCLUDES} -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h
74CFLAGS_PARAM_INLINE_UNIT_GROWTH?=100
75CFLAGS_PARAM_LARGE_FUNCTION_GROWTH?=1000
76.if ${MACHINE_CPUARCH} == "mips"
77CFLAGS_ARCH_PARAMS?=--param max-inline-insns-single=1000
78.endif
79CFLAGS.gcc+= -fno-common -fms-extensions -finline-limit=${INLINE_LIMIT}
80CFLAGS.gcc+= --param inline-unit-growth=${CFLAGS_PARAM_INLINE_UNIT_GROWTH}
81CFLAGS.gcc+= --param large-function-growth=${CFLAGS_PARAM_LARGE_FUNCTION_GROWTH}
82.if defined(CFLAGS_ARCH_PARAMS)
83CFLAGS.gcc+=${CFLAGS_ARCH_PARAMS}
84.endif
85WERROR?= -Werror
86
87# XXX LOCORE means "don't declare C stuff" not "for locore.s".
88ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS} ${ASM_CFLAGS.${.IMPSRC:T}}
89
90.if defined(PROFLEVEL) && ${PROFLEVEL} >= 1
91CFLAGS+=	-DGPROF
92CFLAGS.gcc+=	-falign-functions=16
93.if ${PROFLEVEL} >= 2
94CFLAGS+=	-DGPROF4 -DGUPROF
95PROF=		-pg
96.if ${COMPILER_TYPE} == "gcc"
97PROF+=		-mprofiler-epilogue
98.endif
99.else
100PROF=		-pg
101.endif
102.endif
103DEFINED_PROF=	${PROF}
104
105# Put configuration-specific C flags last (except for ${PROF}) so that they
106# can override the others.
107CFLAGS+=	${CONF_CFLAGS}
108
109# Optional linting. This can be overridden in /etc/make.conf.
110LINTFLAGS=	${LINTOBJKERNFLAGS}
111
112NORMAL_C= ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
113NORMAL_S= ${CC:N${CCACHE_BIN}} -c ${ASM_CFLAGS} ${WERROR} ${.IMPSRC}
114PROFILE_C= ${CC} -c ${CFLAGS} ${WERROR} ${.IMPSRC}
115NORMAL_C_NOWERROR= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC}
116
117NORMAL_M= ${AWK} -f $S/tools/makeobjops.awk ${.IMPSRC} -c ; \
118	  ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.PREFIX}.c
119
120NORMAL_FW= uudecode -o ${.TARGET} ${.ALLSRC}
121NORMAL_FWO= ${LD} -b binary --no-warn-mismatch -d -warn-common -r \
122	-m ${LD_EMULATION} -o ${.TARGET} ${.ALLSRC:M*.fw}
123
124# Common for dtrace / zfs
125CDDL_CFLAGS=	-DFREEBSD_NAMECACHE -nostdinc -I$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
126CDDL_CFLAGS+=	-include $S/cddl/compat/opensolaris/sys/debug_compat.h
127CDDL_C=		${CC} -c ${CDDL_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
128
129# Special flags for managing the compat compiles for ZFS
130ZFS_CFLAGS=	-DBUILDING_ZFS -I$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}
131ZFS_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${ZFS_CFLAGS}
132ZFS_C=		${CC} -c ${ZFS_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
133ZFS_S=		${CC} -c ${ZFS_ASM_CFLAGS} ${WERROR} ${.IMPSRC}
134
135# Special flags for managing the compat compiles for DTrace
136DTRACE_CFLAGS=	-DBUILDING_DTRACE ${CDDL_CFLAGS} -I$S/cddl/dev/dtrace -I$S/cddl/dev/dtrace/${MACHINE_CPUARCH}
137.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386"
138DTRACE_CFLAGS+=	-I$S/cddl/contrib/opensolaris/uts/intel -I$S/cddl/dev/dtrace/x86
139.endif
140DTRACE_CFLAGS+=	-I$S/cddl/contrib/opensolaris/common/util -I$S -DDIS_MEM -DSMP
141DTRACE_ASM_CFLAGS=	-x assembler-with-cpp -DLOCORE ${DTRACE_CFLAGS}
142DTRACE_C=	${CC} -c ${DTRACE_CFLAGS}	${WERROR} ${PROF} ${.IMPSRC}
143DTRACE_S=	${CC} -c ${DTRACE_ASM_CFLAGS}	${WERROR} ${.IMPSRC}
144
145# Special flags for managing the compat compiles for DTrace/FBT
146FBT_CFLAGS=	-DBUILDING_DTRACE -nostdinc -I$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}
147.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386"
148FBT_CFLAGS+=	-I$S/cddl/dev/fbt/x86
149.endif
150FBT_C=		${CC} -c ${FBT_CFLAGS}		${WERROR} ${PROF} ${.IMPSRC}
151
152.if ${MK_CTF} != "no"
153NORMAL_CTFCONVERT=	${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
154.elif ${MAKE_VERSION} >= 5201111300
155NORMAL_CTFCONVERT=
156.else
157NORMAL_CTFCONVERT=	@:
158.endif
159
160NORMAL_LINT=	${LINT} ${LINTFLAGS} ${CFLAGS:M-[DIU]*} ${.IMPSRC}
161
162# Linux Kernel Programming Interface C-flags
163LINUXKPI_INCLUDES=	-I$S/compat/linuxkpi/common/include
164LINUXKPI_C=		${NORMAL_C} ${LINUXKPI_INCLUDES}
165
166# Infiniband C flags.  Correct include paths and omit errors that linux
167# does not honor.
168OFEDINCLUDES=	-I$S/ofed/include ${LINUXKPI_INCLUDES}
169OFEDNOERR=	-Wno-cast-qual -Wno-pointer-arith
170OFEDCFLAGS=	${CFLAGS:N-I*} ${OFEDINCLUDES} ${CFLAGS:M-I*} ${OFEDNOERR}
171OFED_C_NOIMP=	${CC} -c -o ${.TARGET} ${OFEDCFLAGS} ${WERROR} ${PROF}
172OFED_C=		${OFED_C_NOIMP} ${.IMPSRC}
173
174GEN_CFILES= $S/$M/$M/genassym.c ${MFILES:T:S/.m$/.c/}
175SYSTEM_CFILES= config.c env.c hints.c vnode_if.c
176SYSTEM_DEP= Makefile ${SYSTEM_OBJS}
177SYSTEM_OBJS= locore.o ${MDOBJS} ${OBJS}
178SYSTEM_OBJS+= ${SYSTEM_CFILES:.c=.o}
179SYSTEM_OBJS+= hack.pico
180
181MD_ROOT_SIZE_CONFIGURED!=	grep MD_ROOT_SIZE opt_md.h || true ; echo
182.if ${MFS_IMAGE:Uno} != "no"
183.if empty(MD_ROOT_SIZE_CONFIGURED)
184SYSTEM_OBJS+= embedfs_${MFS_IMAGE:T:R}.o
185.endif
186.endif
187SYSTEM_LD= @${LD} -Bdynamic -T ${LDSCRIPT} ${_LDFLAGS} --no-warn-mismatch \
188	--warn-common --export-dynamic --dynamic-linker /red/herring \
189	-o ${.TARGET} -X ${SYSTEM_OBJS} vers.o
190SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \
191	${SIZE} ${.TARGET} ; chmod 755 ${.TARGET}
192SYSTEM_DEP+= ${LDSCRIPT}
193
194# Calculate path for .m files early, if needed.
195.if !defined(NO_MODULES) && !defined(__MPATH)
196__MPATH!=find ${S:tA}/ -name \*_if.m
197.endif
198
199# MKMODULESENV is set here so that port makefiles can augment
200# them.
201
202MKMODULESENV+=	MAKEOBJDIRPREFIX=${.OBJDIR}/modules KMODDIR=${KODIR}
203MKMODULESENV+=	MACHINE_CPUARCH=${MACHINE_CPUARCH}
204MKMODULESENV+=	MACHINE=${MACHINE} MACHINE_ARCH=${MACHINE_ARCH}
205MKMODULESENV+=	MODULES_EXTRA="${MODULES_EXTRA}" WITHOUT_MODULES="${WITHOUT_MODULES}"
206.if (${KERN_IDENT} == LINT)
207MKMODULESENV+=	ALL_MODULES=LINT
208.endif
209.if defined(MODULES_OVERRIDE)
210MKMODULESENV+=	MODULES_OVERRIDE="${MODULES_OVERRIDE}"
211.endif
212.if defined(DEBUG)
213MKMODULESENV+=	DEBUG_FLAGS="${DEBUG}"
214.endif
215.if !defined(NO_MODULES)
216MKMODULESENV+=	__MPATH="${__MPATH}"
217.endif
218
219# Architecture and output format arguments for objdump to convert image to
220# object file
221
222.if ${MFS_IMAGE:Uno} != "no"
223.if empty(MD_ROOT_SIZE_CONFIGURED)
224.if !defined(EMBEDFS_FORMAT.${MACHINE_ARCH})
225EMBEDFS_FORMAT.${MACHINE_ARCH}!= awk -F'"' '/OUTPUT_FORMAT/ {print $$2}' ${LDSCRIPT}
226.if empty(EMBEDFS_FORMAT.${MACHINE_ARCH})
227.undef EMBEDFS_FORMAT.${MACHINE_ARCH}
228.endif
229.endif
230
231.if !defined(EMBEDFS_ARCH.${MACHINE_ARCH})
232EMBEDFS_ARCH.${MACHINE_ARCH}!= sed -n '/OUTPUT_ARCH/s/.*(\(.*\)).*/\1/p' ${LDSCRIPT}
233.if empty(EMBEDFS_ARCH.${MACHINE_ARCH})
234.undef EMBEDFS_ARCH.${MACHINE_ARCH}
235.endif
236.endif
237
238EMBEDFS_FORMAT.arm?=		elf32-littlearm
239EMBEDFS_FORMAT.armv6?=		elf32-littlearm
240EMBEDFS_FORMAT.mips?=		elf32-tradbigmips
241EMBEDFS_FORMAT.mipsel?=		elf32-tradlittlemips
242EMBEDFS_FORMAT.mips64?=		elf64-tradbigmips
243EMBEDFS_FORMAT.mips64el?=	elf64-tradlittlemips
244EMBEDFS_FORMAT.riscv?=		elf64-littleriscv
245.endif
246.endif
247
248# Detect kernel config options that force stack frames to be turned on.
249DDB_ENABLED!=	grep DDB opt_ddb.h || true ; echo
250DTR_ENABLED!=	grep KDTRACE_FRAME opt_kdtrace.h || true ; echo
251HWPMC_ENABLED!=	grep HWPMC opt_hwpmc_hooks.h || true ; echo
252