xref: /freebsd/sys/conf/kern.pre.mk (revision d9f0ce31900a48d1a2bfc1c8c86f79d1e831451a) 
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# Can be overridden by makeoptions or /etc/make.conf
23KERNEL_KO?=	kernel
24KERNEL?=	kernel
25KODIR?=		/boot/${KERNEL}
26LDSCRIPT_NAME?=	ldscript.$M
27LDSCRIPT?=	$S/conf/${LDSCRIPT_NAME}
28
29M=		${MACHINE}
30
31AWK?=		awk
32CP?=		cp
33LINT?=		lint
34NM?=		nm
35OBJCOPY?=	objcopy
36SIZE?=		size
37
38.if defined(DEBUG)
39_MINUS_O=	-O
40CTFFLAGS+=	-g
41.else
42.if ${MACHINE_CPUARCH} == "powerpc"
43_MINUS_O=	-O	# gcc miscompiles some code at -O2
44.else
45_MINUS_O=	-O2
46.endif
47.endif
48.if ${MACHINE_CPUARCH} == "amd64"
49.if ${COMPILER_TYPE} == "clang"
50COPTFLAGS?=-O2 -pipe
51.else
52COPTFLAGS?=-O2 -frename-registers -pipe
53.endif
54.else
55COPTFLAGS?=${_MINUS_O} -pipe
56.endif
57.if !empty(COPTFLAGS:M-O[23s]) && empty(COPTFLAGS:M-fno-strict-aliasing)
58COPTFLAGS+= -fno-strict-aliasing
59.endif
60.if !defined(NO_CPU_COPTFLAGS)
61COPTFLAGS+= ${_CPUCFLAGS}
62.endif
63NOSTDINC= -nostdinc
64
65INCLUDES= ${NOSTDINC} ${INCLMAGIC} -I. -I$S
66
67CFLAGS=	${COPTFLAGS} ${DEBUG}
68CFLAGS+= ${INCLUDES} -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h
69CFLAGS_PARAM_INLINE_UNIT_GROWTH?=100
70CFLAGS_PARAM_LARGE_FUNCTION_GROWTH?=1000
71.if ${MACHINE_CPUARCH} == "mips"
72CFLAGS_ARCH_PARAMS?=--param max-inline-insns-single=1000
73.endif
74CFLAGS.gcc+= -fno-common -fms-extensions -finline-limit=${INLINE_LIMIT}
75CFLAGS.gcc+= --param inline-unit-growth=${CFLAGS_PARAM_INLINE_UNIT_GROWTH}
76CFLAGS.gcc+= --param large-function-growth=${CFLAGS_PARAM_LARGE_FUNCTION_GROWTH}
77.if defined(CFLAGS_ARCH_PARAMS)
78CFLAGS.gcc+=${CFLAGS_ARCH_PARAMS}
79.endif
80WERROR?= -Werror
81
82# XXX LOCORE means "don't declare C stuff" not "for locore.s".
83ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS} ${ASM_CFLAGS.${.IMPSRC:T}}
84
85.if defined(PROFLEVEL) && ${PROFLEVEL} >= 1
86CFLAGS+=	-DGPROF
87CFLAGS.gcc+=	-falign-functions=16
88.if ${PROFLEVEL} >= 2
89CFLAGS+=	-DGPROF4 -DGUPROF
90PROF=		-pg
91.if ${COMPILER_TYPE} == "gcc"
92PROF+=		-mprofiler-epilogue
93.endif
94.else
95PROF=		-pg
96.endif
97.endif
98DEFINED_PROF=	${PROF}
99
100# Put configuration-specific C flags last (except for ${PROF}) so that they
101# can override the others.
102CFLAGS+=	${CONF_CFLAGS}
103
104# Optional linting. This can be overridden in /etc/make.conf.
105LINTFLAGS=	${LINTOBJKERNFLAGS}
106
107NORMAL_C= ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
108NORMAL_S= ${CC:N${CCACHE_BIN}} -c ${ASM_CFLAGS} ${WERROR} ${.IMPSRC}
109PROFILE_C= ${CC} -c ${CFLAGS} ${WERROR} ${.IMPSRC}
110NORMAL_C_NOWERROR= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC}
111
112NORMAL_M= ${AWK} -f $S/tools/makeobjops.awk ${.IMPSRC} -c ; \
113	  ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.PREFIX}.c
114
115NORMAL_FW= uudecode -o ${.TARGET} ${.ALLSRC}
116NORMAL_FWO= ${LD} -b binary --no-warn-mismatch -d -warn-common -r \
117	-o ${.TARGET} ${.ALLSRC:M*.fw}
118
119# Common for dtrace / zfs
120CDDL_CFLAGS=	-DFREEBSD_NAMECACHE -nostdinc -I$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
121CDDL_CFLAGS+=	-include $S/cddl/compat/opensolaris/sys/debug_compat.h
122CDDL_C=		${CC} -c ${CDDL_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
123
124# Special flags for managing the compat compiles for ZFS
125ZFS_CFLAGS=	-DBUILDING_ZFS -I$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}
126ZFS_ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${ZFS_CFLAGS}
127ZFS_C=		${CC} -c ${ZFS_CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
128ZFS_S=		${CC} -c ${ZFS_ASM_CFLAGS} ${WERROR} ${.IMPSRC}
129
130# Special flags for managing the compat compiles for DTrace
131DTRACE_CFLAGS=	-DBUILDING_DTRACE ${CDDL_CFLAGS} -I$S/cddl/dev/dtrace -I$S/cddl/dev/dtrace/${MACHINE_CPUARCH}
132.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386"
133DTRACE_CFLAGS+=	-I$S/cddl/contrib/opensolaris/uts/intel -I$S/cddl/dev/dtrace/x86
134.endif
135DTRACE_CFLAGS+=	-I$S/cddl/contrib/opensolaris/common/util -I$S -DDIS_MEM -DSMP
136DTRACE_ASM_CFLAGS=	-x assembler-with-cpp -DLOCORE ${DTRACE_CFLAGS}
137DTRACE_C=	${CC} -c ${DTRACE_CFLAGS}	${WERROR} ${PROF} ${.IMPSRC}
138DTRACE_S=	${CC} -c ${DTRACE_ASM_CFLAGS}	${WERROR} ${.IMPSRC}
139
140# Special flags for managing the compat compiles for DTrace/FBT
141FBT_CFLAGS=	-DBUILDING_DTRACE -nostdinc -I$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}
142.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386"
143FBT_CFLAGS+=	-I$S/cddl/dev/fbt/x86
144.endif
145FBT_C=		${CC} -c ${FBT_CFLAGS}		${WERROR} ${PROF} ${.IMPSRC}
146
147.if ${MK_CTF} != "no"
148NORMAL_CTFCONVERT=	${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
149.elif ${MAKE_VERSION} >= 5201111300
150NORMAL_CTFCONVERT=
151.else
152NORMAL_CTFCONVERT=	@:
153.endif
154
155NORMAL_LINT=	${LINT} ${LINTFLAGS} ${CFLAGS:M-[DIU]*} ${.IMPSRC}
156
157# Linux Kernel Programming Interface C-flags
158LINUXKPI_INCLUDES=	-I$S/compat/linuxkpi/common/include
159LINUXKPI_C=		${NORMAL_C} ${LINUXKPI_INCLUDES}
160
161# Infiniband C flags.  Correct include paths and omit errors that linux
162# does not honor.
163OFEDINCLUDES=	-I$S/ofed/include ${LINUXKPI_INCLUDES}
164OFEDNOERR=	-Wno-cast-qual -Wno-pointer-arith
165OFEDCFLAGS=	${CFLAGS:N-I*} ${OFEDINCLUDES} ${CFLAGS:M-I*} ${OFEDNOERR}
166OFED_C_NOIMP=	${CC} -c -o ${.TARGET} ${OFEDCFLAGS} ${WERROR} ${PROF}
167OFED_C=		${OFED_C_NOIMP} ${.IMPSRC}
168
169GEN_CFILES= $S/$M/$M/genassym.c ${MFILES:T:S/.m$/.c/}
170SYSTEM_CFILES= config.c env.c hints.c vnode_if.c
171SYSTEM_DEP= Makefile ${SYSTEM_OBJS}
172SYSTEM_OBJS= locore.o ${MDOBJS} ${OBJS}
173SYSTEM_OBJS+= ${SYSTEM_CFILES:.c=.o}
174SYSTEM_OBJS+= hack.So
175
176MD_ROOT_SIZE_CONFIGURED!=	grep MD_ROOT_SIZE opt_md.h || true ; echo
177.if ${MFS_IMAGE:Uno} != "no"
178.if empty(MD_ROOT_SIZE_CONFIGURED)
179SYSTEM_OBJS+= embedfs_${MFS_IMAGE:T:R}.o
180.endif
181.endif
182SYSTEM_LD= @${LD} -Bdynamic -T ${LDSCRIPT} ${_LDFLAGS} --no-warn-mismatch \
183	--warn-common --export-dynamic --dynamic-linker /red/herring \
184	-o ${.TARGET} -X ${SYSTEM_OBJS} vers.o
185SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \
186	${SIZE} ${.TARGET} ; chmod 755 ${.TARGET}
187SYSTEM_DEP+= ${LDSCRIPT}
188
189# Calculate path for .m files early, if needed.
190.if !defined(__MPATH)
191__MPATH!=find ${S:tA}/ -name \*_if.m
192.endif
193
194# MKMODULESENV is set here so that port makefiles can augment
195# them.
196
197MKMODULESENV+=	MAKEOBJDIRPREFIX=${.OBJDIR}/modules KMODDIR=${KODIR}
198MKMODULESENV+=	MACHINE_CPUARCH=${MACHINE_CPUARCH}
199MKMODULESENV+=	MACHINE=${MACHINE} MACHINE_ARCH=${MACHINE_ARCH}
200MKMODULESENV+=	MODULES_EXTRA="${MODULES_EXTRA}" WITHOUT_MODULES="${WITHOUT_MODULES}"
201.if (${KERN_IDENT} == LINT)
202MKMODULESENV+=	ALL_MODULES=LINT
203.endif
204.if defined(MODULES_OVERRIDE)
205MKMODULESENV+=	MODULES_OVERRIDE="${MODULES_OVERRIDE}"
206.endif
207.if defined(DEBUG)
208MKMODULESENV+=	DEBUG_FLAGS="${DEBUG}"
209.endif
210MKMODULESENV+=	__MPATH="${__MPATH}"
211
212# Architecture and output format arguments for objdump to convert image to
213# object file
214
215.if ${MFS_IMAGE:Uno} != "no"
216.if empty(MD_ROOT_SIZE_CONFIGURED)
217.if !defined(EMBEDFS_FORMAT.${MACHINE_ARCH})
218EMBEDFS_FORMAT.${MACHINE_ARCH}!= awk -F'"' '/OUTPUT_FORMAT/ {print $$2}' ${LDSCRIPT}
219.if empty(EMBEDFS_FORMAT.${MACHINE_ARCH})
220.undef EMBEDFS_FORMAT.${MACHINE_ARCH}
221.endif
222.endif
223
224.if !defined(EMBEDFS_ARCH.${MACHINE_ARCH})
225EMBEDFS_ARCH.${MACHINE_ARCH}!= sed -n '/OUTPUT_ARCH/s/.*(\(.*\)).*/\1/p' ${LDSCRIPT}
226.if empty(EMBEDFS_ARCH.${MACHINE_ARCH})
227.undef EMBEDFS_ARCH.${MACHINE_ARCH}
228.endif
229.endif
230
231EMBEDFS_FORMAT.arm?=		elf32-littlearm
232EMBEDFS_FORMAT.armv6?=		elf32-littlearm
233EMBEDFS_FORMAT.mips?=		elf32-tradbigmips
234EMBEDFS_FORMAT.mipsel?=		elf32-tradlittlemips
235EMBEDFS_FORMAT.mips64?=		elf64-tradbigmips
236EMBEDFS_FORMAT.mips64el?=	elf64-tradlittlemips
237EMBEDFS_FORMAT.riscv?=		elf64-littleriscv
238.endif
239.endif
240
241# Detect kernel config options that force stack frames to be turned on.
242DDB_ENABLED!=	grep DDB opt_ddb.h || true ; echo
243DTR_ENABLED!=	grep KDTRACE_FRAME opt_kdtrace.h || true ; echo
244HWPMC_ENABLED!=	grep HWPMC opt_hwpmc_hooks.h || true ; echo
245