# Copyright 1990 W. Jolitz
#	from: @(#)Makefile.i386	7.1 5/10/91
#	$Id: Makefile.i386,v 1.64 1995/05/30 07:59:05 rgrimes Exp $
#
# Makefile for FreeBSD
#
# This makefile is constructed from a machine description:
#	config machineid
# Most changes should be made in the machine description
#	/sys/i386/conf/``machineid''
# after which you should do
#	 config machineid
# Generic makefile changes should be made in
#	/sys/i386/conf/Makefile.i386
# after which config should be rerun for all machines.
#
CC?=	cc
CPP?=	cpp
LD?=	/usr/bin/ld

.if exists(./@/.)
S=	./@
.else
S=	../..
.endif
I386=	${S}/i386

CWARNFLAGS?=-W -Wreturn-type -Wcomment -Wredundant-decls -Wimplicit
#
# The following flags are next up for working on:
#	-Wnested-externs (almost works)
#	-Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations
#
# When working on removing warnings from code, the `-Werror' flag should be
# of material assistance.
#
COPTFLAGS?=-O
# Not ready for -I- yet.  #include "foo.h" where foo.h is in the srcdir fails.
INCLUDES= -nostdinc -I. -I$S -I$S/sys
# This hack is to allow kernel compiles to succeed on machines w/out srcdist
.if exists($S/../include)
INCLUDES+= -I$S/../include
.else
INCLUDES+= -I/usr/include
.endif
COPTS=	${INCLUDES} ${IDENT} -DKERNEL -Di386 -DLOAD_ADDRESS=0x${LOAD_ADDRESS}
ASFLAGS=
CFLAGS=	${COPTFLAGS} ${CWARNFLAGS} ${DEBUG} ${COPTS}
LOAD_ADDRESS?=	F0100000

NORMAL_C= ${CC} -c ${CFLAGS} ${PROF} $<
NORMAL_C_C= ${CC} -c ${CFLAGS} ${PROF} ${PARAM} $<
# XXX errors leak out of all the pipes.  Should use cc *.S.
# XXX LOCORE means "don't declare C stuff" not "for locore.s".
NORMAL_S= ${CPP} -DLOCORE ${COPTS} $< | ${AS} ${ASFLAGS} -o $*.o
DRIVER_C= ${CC} -c ${CFLAGS} ${PROF} $<
DRIVER_C_C= ${CC} -c ${CFLAGS} ${PROF} ${PARAM} $<
PROFILE_C= ${CC} -c ${CFLAGS} ${PARAM} $<

SFILES=	${I386}/i386/exception.s ${I386}/i386/microtime.s \
	${I386}/i386/support.s ${I386}/i386/swtch.s ${I386}/apm/apm_setup.s
SYSTEM_CFILES= ioconf.c param.c vnode_if.c
SYSTEM_SFILES= ${I386}/i386/locore.s
SYSTEM_OBJS= locore.o vnode_if.o ${OBJS} ioconf.o param.o
SYSTEM_DEP= Makefile symbols.exclude symbols.sort ${SYSTEM_OBJS} libkern.a
SYSTEM_LD_HEAD= @echo loading $@; rm -f $@
SYSTEM_LD= @${LD} -Bstatic -Z -T ${LOAD_ADDRESS} -o $@ -X ${SYSTEM_OBJS} vers.o libkern.a
.if ${CFLAGS:M-g} == ""
SYMORDER_EXCLUDE=-x symbols.exclude
.endif
SYSTEM_LD_TAIL= @echo rearranging symbols; \
	symorder -m ${SYMORDER_EXCLUDE} symbols.sort $@; \
	size $@; chmod 755 $@

%BEFORE_DEPEND

%OBJS

%CFILES

%LOAD

%CLEAN

# This is slightly different from before in that if you define PROF
# to anything, it will assume profiling.  Don't do "PROF=" to turn
# profiling off!
.if exists($S/libkern/obj)
LIBKERNP=$S/libkern/obj
.else
LIBKERNP=$S/libkern
.endif

.if defined(PROF)
LIBKERN=${LIBKERNP}/libkern_p.a
.else
LIBKERN=${LIBKERNP}/libkern.a
.endif

libkern.a: ${LIBKERN}
	@rm -f libkern.a
	ln -s ${LIBKERN} libkern.a

${LIBKERN}:
	@(cd $S/libkern; make)

clean:
	rm -f *.o *.s eddep errs genassym kernel libkern.a linterrs \
	      makelinks param.c symbols.exclude symbols.sort tags \
	      vers.c vnode_if.c vnode_if.h ${CLEAN}

#lint: /tmp param.c
#	@lint -hbxn -DGENERIC -Dvolatile= ${COPTS} ${PARAM} \
#	  ${I386}/i386/Locore.c ${CFILES} ioconf.c param.c | \
#	    grep -v 'struct/union .* never defined' | \
#	    grep -v 'possible pointer alignment problem'

symbols.exclude: Makefile
	echo "gcc2_compiled." >symbols.exclude
	echo "___gnu_compiled_c" >>symbols.exclude

symbols.sort: ${I386}/i386/symbols.raw
	grep -v '^#' ${I386}/i386/symbols.raw \
	    | sed 's/^	//' | sort -u > symbols.sort

locore.o: ${I386}/i386/locore.s assym.s
	${NORMAL_S}

# everything potentially depends on the Makefile since everything potentially
# depends on the options.  Some things are more dependent on the Makefile for
# historical reasons.
machdep.o: Makefile

# the following is necessary because autoconf.o depends on #if GENERIC
autoconf.o: Makefile

# depend on network configuration
af.o uipc_proto.o locore.o: Makefile

# depends on KDB (cons.o also depends on GENERIC)
trap.o cons.o: Makefile

# this rule stops ./assym.s in .depend from causing problems
./assym.s: assym.s

assym.s: genassym
	./genassym >assym.s

# Some of the defines that genassym outputs may well depend on the
# value of kernel options.
genassym.o: ${I386}/i386/genassym.c Makefile
	${CC} -c ${CFLAGS} ${PARAM} -UKERNEL ${I386}/i386/genassym.c

genassym: genassym.o
	${CC} -static ${CFLAGS} ${PARAM} genassym.o -o $@

# XXX this assumes that the options for NORMAL_C* and DRIVER_C* are identical.
depend: assym.s param.c vnode_if.h ${BEFORE_DEPEND}
	mkdep ${COPTS} ${CFILES} ${SYSTEM_CFILES}
	mkdep -a ${COPTS} ${PARAM} -UKERNEL ${I386}/i386/genassym.c
	MKDEP_CPP=${CPP} ; export MKDEP_CPP ; \
	mkdep -a -DLOCORE ${COPTS} ${SFILES} ${SYSTEM_SFILES}

links:
	egrep '#if' ${CFILES:Nswapkernel.c} | sed -f $S/conf/defines | \
	  sed -e 's/:.*//' -e 's/\.c/.o/' | sort -u > dontlink
	echo ${CFILES:Nswapkernel.c} | tr -s ' ' '\12' | sed 's/\.c/.o/' | \
	  sort -u | comm -23 - dontlink | \
	  sed 's,../.*/\(.*.o\),rm -f \1;ln -s ../GENERIC/\1 \1,' > makelinks
	sh makelinks && rm -f dontlink

tags:
	@echo "see $S/kern/Makefile for tags"

install:
	chflags noschg /kernel
	mv /kernel /kernel.old
	install -c -m 555 -o root -g wheel -fschg kernel /

ioconf.o: ioconf.c $S/sys/param.h machine/pte.h $S/sys/buf.h \
    ${I386}/isa/isa_device.h ${I386}/isa/isa.h ${I386}/isa/icu.h
	${CC} -c ${CFLAGS} ioconf.c

param.c: $S/conf/param.c
	-rm -f param.c
	cp $S/conf/param.c .

param.o: param.c Makefile
	${CC} -c ${CFLAGS} ${PARAM} param.c

vers.o: ${SYSTEM_DEP} ${SYSTEM_SWAP_DEP}
	sh $S/conf/newvers.sh ${KERN_IDENT} ${IDENT}
	${CC} ${CFLAGS} -c vers.c

vnode_if.c: $S/kern/vnode_if.sh $S/kern/vnode_if.src
	sh $S/kern/vnode_if.sh $S/kern/vnode_if.src
vnode_if.h: $S/kern/vnode_if.sh $S/kern/vnode_if.src
	sh $S/kern/vnode_if.sh $S/kern/vnode_if.src

%RULES

# DO NOT DELETE THIS LINE -- make depend uses it