kern.pre.mk revision 91512 
1# kern.pre.mk
2#
3# Unified Makefile for building kenrels.  This includes all the definitions
4# that need to be included before %BEFORE_DEPEND
5#
6# $FreeBSD: head/sys/conf/kern.pre.mk 91512 2002-03-01 01:21:29Z obrien $
7#
8
9# Can be overridden by makeoptions or /etc/make.conf
10KERNEL_KO?=	kernel
11KERNEL?=	kernel
12KODIR?=		/boot/${KERNEL}
13
14M=	${MACHINE_ARCH}
15
16AWK?=		awk
17NM?=		nm
18OBJCOPY?=	objcopy
19SIZE?=		size
20
21COPTFLAGS?=-O -pipe
22.if !defined(NO_CPU_COPTFLAGS)
23COPTFLAGS+= ${_CPUCFLAGS}
24.endif
25INCLUDES= -nostdinc -I- ${INCLMAGIC} -I. -I$S -I$S/dev
26
27# This hack lets us use the Intel ACPICA code without spamming a new 
28# include path into 100+ source files.
29INCLUDES+= -I$S/contrib/dev/acpica
30
31# ... and the same for ipfilter
32INCLUDES+= -I$S/contrib/ipfilter
33
34# This hack is to allow kernel compiles to succeed on machines w/out srcdist
35.if exists($S/../include)
36INCLUDES+= -I$S/../include
37.else
38INCLUDES+= -I/usr/include
39.endif
40
41COPTS=	${INCLUDES} ${IDENT} -D_KERNEL -ffreestanding -include opt_global.h
42CFLAGS=	${COPTFLAGS} ${CWARNFLAGS} ${DEBUG} ${COPTS} -fno-common
43
44# XXX LOCORE means "don't declare C stuff" not "for locore.s".
45ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS}
46
47# Select the correct set of tools. Can't set OBJFORMAT here because it
48# doesn't get exported into the environment, and if it were exported
49# then it might break building of utilities.
50FMT?=		-elf
51CFLAGS+=	${FMT}
52
53DEFINED_PROF=	${PROF}
54.if defined(PROF)
55CFLAGS+=	-malign-functions=4
56.if ${PROFLEVEL} >= 2
57IDENT+=	-DGPROF4 -DGUPROF
58PROF+=	-mprofiler-epilogue
59.endif
60.endif
61
62.if defined(NO_WERROR)
63WERROR=
64.else
65WERROR?=	-Werror
66.endif
67
68# Put configuration-specific C flags last (except for ${PROF}) so that they
69# can override the others.
70CFLAGS+=	${CONF_CFLAGS}
71
72NORMAL_C= ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.IMPSRC}
73NORMAL_S= ${CC} -c ${ASM_CFLAGS} ${WERROR} ${.IMPSRC}
74PROFILE_C= ${CC} -c ${CFLAGS} ${WERROR} ${.IMPSRC}
75NORMAL_C_NOWERROR= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC}
76
77NORMAL_M= perl5 $S/kern/makeobjops.pl -c $<; \
78	  ${CC} -c ${CFLAGS} ${PROF} ${.PREFIX}.c
79
80GEN_CFILES= $S/$M/$M/genassym.c
81SYSTEM_CFILES= vnode_if.c hints.c env.c config.c
82SYSTEM_SFILES= $S/$M/$M/locore.s
83SYSTEM_DEP= Makefile ${SYSTEM_OBJS}
84SYSTEM_OBJS= locore.o vnode_if.o ${OBJS} hints.o env.o config.o hack.So
85SYSTEM_LD= @${LD} ${FMT} -Bdynamic -T $S/conf/ldscript.$M \
86	-warn-common -export-dynamic -dynamic-linker /red/herring \
87	-o ${.TARGET} -X ${SYSTEM_OBJS} vers.o
88SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \
89	${SIZE} ${FMT} ${.TARGET} ; chmod 755 ${.TARGET}
90SYSTEM_DEP+= $S/conf/ldscript.$M
91
92# MKMODULESENV is set here so that port makefiles can augment
93# them.
94
95MKMODULESENV=	MAKEOBJDIRPREFIX=${.OBJDIR}/modules KMODDIR=${KODIR}
96.if (${KERN_IDENT} == LINT)
97MKMODULESENV+=	ALL_MODULES=LINT
98.endif
99.if defined(MODULES_OVERRIDE)
100MKMODULESENV+=	MODULES_OVERRIDE="${MODULES_OVERRIDE}"
101.endif
102.if defined(DEBUG)
103MKMODULESENV+=	DEBUG="${DEBUG}" DEBUG_FLAGS="${DEBUG}"
104.endif
105
106all:	${KERNEL_KO}
107