configure

早期freebsd实现

			tm_file=hp310g.h
		else
			xmake_file=x-hp320
			tm_file=hp310.h
		fi
		broken_install=yes
		use_collect2=yes
		header_files=math-68881.h
		;;
	m68000-hp-bsd*)			# HP 9000/200 running BSD
		cpu_type=m68k
		tm_file=hp2bsd.h
		xmake_file=x-hp2bsd
		use_collect2=yes
		header_files=math-68881.h
		;;
	m68000-att-sysv*)
		cpu_type=m68k
		xm_file=xm-3b1.h
		if [ x$gas = xyes ]
		then
			tm_file=3b1g.h
		else
			tm_file=3b1.h
		fi
		use_collect2=yes
		header_files=math-68881.h
		;;
	m68000-convergent-sysv*)
		cpu_type=m68k
		xm_file=xm-3b1.h
		tm_file=ctix.h
		use_collect2=yes
		header_files=math-68881.h
		;;
	ns32k-encore-osf*)		# Encore with OSF/rose
		tm_file=encrose.h
		xmake_file=x-encrose
		tmake_file=t-encrose
		use_collect2=yes
		;;
	ns32k-sequent-bsd*)
		tm_file=sequent.h
		use_collect2=yes
		;;
	ns32k-encore-bsd*)
		tm_file=encore.h
		use_collect2=yes
		;;
# This has not been updated to GCC 2.
#	ns32k-ns-genix*)
#		xm_file=xm-genix.h
#		xmake_file=x-genix
#		tm_file=genix.h
#		broken_install=yes
#		use_collect2=yes
#		;;
	ns32k-merlin-*)
		tm_file=merlin.h
		use_collect2=yes
		;;
	ns32k-tek6100-bsd*)
		tm_file=tek6100.h
		broken_install=yes
		use_collect2=yes
		;;
	ns32k-tek6200-bsd*)
		tm_file=tek6200.h
		broken_install=yes
		use_collect2=yes
		;;
	ns32k-pc532-mach*)
		tm_file=pc532-mach.h
		use_collect2=yes
		;;
	ns32k-pc532-minix*)
		tm_file=pc532-min.h
		xm_file=xm-pc532-min.h
		use_collect2=yes
		;;
	m88k-*-luna*)
		tm_file=m88kluna.h
		tmake_file=t-m88kluna
		;;
	m88k-dg-dgux*)
		tm_file=m88kdgux.h
		xmake_file=x-m88kdgux
		broken_install=yes
		;;
	m88k-*-sysv4*)
		tm_file=m88kv4.h
		xmake_file=x-m88kv4
		tmake_file=t-m88kv4
		;;
	m88k-dolphin-sysv3*)
		tm_file=m88kdolph.h
		xm_file=xm-m88kv3.h
		xmake_file=x-m88kdolph
		;;
	m88k-*-sysv3*)
		tm_file=m88kv3.h
		xm_file=xm-m88kv3.h
		;;
# This hasn't been upgraded to GCC 2.
#	fx80-alliant-*)			# Alliant FX/80
#		tm_file=fx80.h
#		;;
	arm-*-*)			# Acorn RISC machine
		tm_file=arm.h
		;;
	c1-convex-*)			# Convex C1
		tm_file=convex1.h
		cpu_type=convex
		use_collect2=yes
		;;
	c2-convex-*)			# Convex C2
		tm_file=convex2.h
		cpu_type=convex
		use_collect2=yes
		;;
	c32-convex-*)
		tm_file=convex32.h	# Convex C32xx
		cpu_type=convex
		use_collect2=yes
		;;
	c34-convex-*)
		tm_file=convex34.h	# Convex C34xx
		cpu_type=convex
		use_collect2=yes
		;;
	c38-convex-*)
		tm_file=convex38.h	# Convex C38xx
		cpu_type=convex
		use_collect2=yes
		;;
	mips-sgi-irix4*)		# Mostly like a MIPS.
		if [ x$stabs = xyes ]; then
		    tm_file=iris4g.h
		else
		    tm_file=iris4.h
		fi
		xm_file=xm-irix4.h
		broken_install=yes
		xmake_file=x-iris
		use_collect2=yes
		;;
	mips-sgi-*)			# Mostly like a MIPS.
		if [ x$stabs = xyes ]; then
		    tm_file=irisgdb.h
		else
		    tm_file=iris.h
		fi
		xm_file=xm-iris.h
		broken_install=yes
		xmake_file=x-iris
		use_collect2=yes
		;;
	mips-dec-ultrix*)		# Decstation.
		if [ x$stabs = xyes ]; then
		    tm_file=decstabs.h
		else
		    tm_file=decstatn.h
		fi
		tmake_file=t-decstatn
		xmake_file=x-decstatn
		use_collect2=yes
	        ;;
	mips-dec-osfrose*)		# Decstation running OSF/1 reference port with OSF/rose.
		tm_file=decrose.h
		xmake_file=x-decrose
		tmake_file=t-decrose
		use_collect2=yes
		;;
	mips-dec-osf*)			# Decstation running OSF/1 as shipped by DIGITAL
		if [ x$stabs = xyes ]; then
		    tm_file=dec-gosf1.h
		else
		    tm_file=dec-osf1.h
		fi
		xmake_file=x-dec-osf1
		tmake_file=t-decstatn
		use_collect2=yes
		;;
	mips-dec-bsd*)			# Decstation running 4.4 BSD
		tm_file=mips-dec-bsd.h
		xmake_file=x-mipsbsd
		tmake_file=t-mipsbsd
		fixincludes=
		;;
	mips-sony-bsd* | mips-sony-newsos*)	# Sony NEWS 3600 or risc/news.
		if [ x$stabs = xyes ]; then
		    tm_file=mips-gnews.h
		else
		    tm_file=mips-news.h
		fi
		xm_file=xm-mips.h
		use_collect2=yes
		;;
	mips-sony-sysv*)		# Sony NEWS 3800 with NEWSOS5.0.
					# That is based on svr4.
		# t-svr4 is not right because this system doesn't use ELF.
		if [ x$stabs = xyes ]; then
		    tm_file=mips-gn5.h
		else
		    tm_file=mips-n5.h
		fi
		xm_file=xm-mipsnews.h
		use_collect2=yes
		;;
	mips-*riscos[56789]bsd* | mips-*riscos[56789]-bsd*)
		if [ x$stabs = xyes ]; then	# MIPS BSD 4.3, RISC-OS 5.0
		    tm_file=mips-5gbsd.h
		else
		    tm_file=mips-5bsd.h
		fi
		use_collect2=yes
	        ;;
	mips-*-bsd* | mips-*riscosbsd* | mips-*riscos[1234]bsd* \
		| mips-*riscos-bsd* | mips-*riscos[1234]-bsd*)
		if [ x$stabs = xyes ]; then	# MIPS BSD 4.3, RISC-OS 4.0
		    tm_file=mips-gbsd.h
		else
		    tm_file=mips-bsd.h
		fi
		use_collect2=yes
	        ;;
	mips-*riscos[56789]sysv4* | mips-*riscos[56789]-sysv4*)
		if [ x$stabs = xyes ]; then	# MIPS System V.4., RISC-OS 5.0
		    tm_file=mips-5gsvr4.h
		else
		    tm_file=mips-5svr4.h
		fi
		xm_file=xm-umips.h
		xmake_file=x-mipsv
		;;
	mips-*-sysv4* | mips-*riscos[1234]sysv4* | mips-*riscossysv4* \
		| mips-*riscos[1234]-sysv4* | mips-*riscos-sysv4*)
		if [ x$stabs = xyes ]; then	# MIPS System V.4. RISC-OS 4.0
		    tm_file=mips-gsvr4.h
		else
		    tm_file=mips-svr4.h
		fi
		xm_file=xm-umips.h
		xmake_file=x-mipsv
		;;
	mips-*riscos[56789]sysv* | mips-*-riscos[56788]-sysv*)
		if [ x$stabs = xyes ]; then	# MIPS System V.3, RISC-OS 5.0
		    tm_file=mips-5gsysv.h
		else
		    tm_file=mips-5sysv.h
		fi
		xm_file=xm-umips.h
		xmake_file=x-mipsv
		use_collect2=yes
		;;
	mips-*-sysv* | mips-*riscossysv* | mips-*riscos-sysv*)
		if [ x$stabs = xyes ]; then	# MIPS System V.3, RISC-OS 4.0
		    tm_file=mips-gsysv.h
		else
		    tm_file=mips-sysv.h
		fi
		xm_file=xm-umips.h
		xmake_file=x-mipsv
		use_collect2=yes
		;;
	mips-*riscos[56789]*)			# Default MIPS RISC-OS 5.0.
		if [ x$stabs = xyes ]; then
		    tm_file=mips-5gdb.h
		else
		    tm_file=mips-5.h
		fi
		use_collect2=yes
		;;
	mips-*-*)				# Default MIPS RISC-OS 4.0.
		if [ x$stabs = xyes ]; then
		    tm_file=mips-gdb.h
		else
		    tm_file=mips.h
		fi
		use_collect2=yes
		;;
	pyramid-*-*)
		cpu_type=pyr
		tm_file=pyr.h
		use_collect2=yes
		;;
# This hasn't been upgraded to GCC 2.
#	tron-*-*)
#		cpu_type=gmicro
#		tm_file=gmicro.h
#		use_collect2=yes
#		;;
	a29k-*-bsd*)
		tm_file=a29kunix.h
		xm_file=xm-a29kunix.h
		xmake_file=x-a29kunix
		use_collect2=yes
		;;
	a29k-*-*)			# Default a29k environment.
		use_collect2=yes
		;;
	romp-*-aos*)
		xm_file=xm-romp.h
		tm_file=romp.h
		use_collect2=yes
		;;
	romp-*-mach*)
		xm_file=xm-romp.h
		tm_file=romp.h
		xmake_file=x-romp-mach
		use_collect2=yes
		;;
	rs6000-*-mach*)
		xm_file=xm-rs6k-m.h
		tm_file=rs6000-mach.h
		xmake_file=x-rs6k-mach
		use_collect2=yes
		;;
	rs6000-ibm-aix32)
		xm_file=xm-rs6000.h
		tm_file=rs6000-aix32.h
		use_collect2=yes
		;;
	rs6000-ibm-aix*)
		xm_file=xm-rs6000.h
		tm_file=rs6000.h
		use_collect2=yes
		;;
	hppa1.1-*-bsd*)
		cpu_type=pa
		xm_file=xm-pa.h
		tm_file=pa1.h
		xmake_file=x-pa
		tmake_file=t-pa
		use_collect2=yes
		;;
	hppa1.0-*-bsd*)
		cpu_type=pa
		xm_file=xm-pa.h
		tm_file=pa.h
		xmake_file=x-pa
		tmake_file=t-pa
		use_collect2=yes
		;;
	hppa1.0-*-hpux7*)
		cpu_type=pa
		xm_file=xm-pahpux.h
		xmake_file=x-pa-hpux
		tmake_file=t-libc-ok
		if [ x$gas = xyes ]
		then
			tm_file=pa-gux7.h
		else
			tm_file=pa-hpux7.h
		fi
		broken_install=yes
		use_collect2=yes
		;;
	hppa1.1-*-hpux*)
		cpu_type=pa
		xm_file=xm-pahpux.h
		xmake_file=x-pa-hpux
		tmake_file=t-libc-ok
		if [ x$gas = xyes ]
		then
			tm_file=pa1-ghpux.h
		else
			tm_file=pa1-hpux.h
		fi
		broken_install=yes
		use_collect2=yes
		;;
	hppa1.0-*-hpux*)
		cpu_type=pa
		xm_file=xm-pahpux.h
		xmake_file=x-pa-hpux
		tmake_file=t-libc-ok
		if [ x$gas = xyes ]
		then
			tm_file=pa-ghpux.h
		else
			tm_file=pa-hpux.h
		fi
		broken_install=yes
		use_collect2=yes
		;;
	we32k-att-sysv*)
		cpu_type=we32k
		use_collect2=yes
		;;
	alpha-*-osf*)
		cpu_type=alpha
		broken_install=yes
		use_collect2=yes
		;;
	i960-*-*)			# Default i960 environment.
		use_collect2=yes
		;;
	*)
		echo "Configuration $machine not supported" 1>&2
		exit 1
		;;
	esac

	case $machine in
	*-*-sysv4*)
		fixincludes=fixinc.svr4
		xmake_try_sysv=x-sysv
		broken_install=yes
		;;
	*-*-sysv*)
		broken_install=yes
		;;
	esac

	# Distinguish i386 from i486.
	case $machine in
	i486-*-*)
		target_cpu_default=2
		;;
	esac

	# No need for collect2 if we have the GNU linker.
	case x$gnu_ld in 
	xyes)
		use_collect2=
		;;
	esac

# Default certain vars that apply to both host and target in turn.
	if [ x$cpu_type = x ]
	then cpu_type=`echo $machine | sed 's/-.*$//'`
	fi

# Save data on machine being used to compile GCC in build_xm_file.
# Save data on host machine in vars host_xm_file and host_xmake_file.
	if [ x$pass1done = x ]
	then
		if [ x$xm_file = x ]; then build_xm_file=xm-$cpu_type.h
		else build_xm_file=$xm_file
		fi
		pass1done=yes
	else
		if [ x$pass2done = x ]
		then
			if [ x$xm_file = x ]; then host_xm_file=xm-$cpu_type.h
			else host_xm_file=$xm_file
			fi
			if [ x$xmake_file = x ]
			then xmake_file=x-$cpu_type
			fi
			host_xmake_file=$xmake_file
			host_broken_install=$broken_install
			pass2done=yes
		fi
	fi
done

# Default the target-machine variables that were not explicitly set.
if [ x$tm_file = x ]
then tm_file=$cpu_type.h; fi

if [ x$header_files = x ]
then header_files=; fi

if [ x$xm_file = x ]
then xm_file=xm-$cpu_type.h; fi

md_file=${cpu_type}.md

if [ x$out_file = x ]
then out_file=$cpu_type.c; fi

if [ x$tmake_file = x ]
then tmake_file=t-$cpu_type
fi


# Set up the list of links to be made.
# $links is the list of link names, and $files is the list of names to link to.
files="$host_xm_file $tm_file $md_file $out_file $xm_file $build_xm_file"
links="config.h tm.h md aux-output.c tconfig.h hconfig.h"

# Make the links.
while [ -n "$files" ]
do
	# set file to car of files, files to cdr of files
	set $files; file=$1; shift; files=$*
	set $links; link=$1; shift; links=$*

	if [ ! -r ${srcdir}/config/$file ]
	then
		echo "$progname: cannot create a link \`$link'," 1>&2
		echo "since the file \`config/$file' does not exist" 1>&2
		exit 1
	fi

	$remove -f $link
	rm -f config.status
	# Make a symlink if possible, otherwise try a hard link
	$symbolic_link ${srcdir}/config/$file $link 2>/dev/null || $hard_link ${srcdir}/config/$file $link || $copy ${srcdir}/config/$file $link

	if [ ! -r $link ]
	then
		echo "$progname: unable to link \`$link' to \`${srcdir}/config/$file'" 1>&2
		exit 1
	fi
	echo "Linked \`$link' to \`${srcdir}/config/$file'"
done

# Create Makefile.tem from Makefile.in.
# Make it set VPATH if necessary so that the sources are found.
# Also change its value of srcdir.
# Also create a .gdbinit file which runs the one in srcdir
# and tells GDB to look there for source files.
case $srcdir in
.)
	rm -f Makefile.tem
	cp Makefile.in Makefile.tem
	chmod +w Makefile.tem
	;;
*)
	rm -f Makefile.tem
	echo "VPATH = ${srcdir}" \
	  | cat - ${srcdir}/Makefile.in \
	  | sed "s@^srcdir = \.@srcdir = ${srcdir}@" > Makefile.tem
	rm -f .gdbinit
	echo "dir ." > .gdbinit
	echo "dir ${srcdir}" >> .gdbinit
	echo "source ${srcdir}/.gdbinit" >> .gdbinit
	;;
esac

# Conditionalize the makefile for this host machine.
if [ -f ${srcdir}/config/${host_xmake_file} ]
then
	rm -f Makefile.xx
	sed -e "/####host/  r ${srcdir}/config/${host_xmake_file}" Makefile.tem > Makefile.xx
	echo "Merged ${host_xmake_file}."
	rm -f Makefile.tem
	mv Makefile.xx Makefile.tem
else
# Say in the makefile that there is no host_xmake_file,
# by using a name which (when interpreted relative to $srcdir/config)
# will duplicate another dependency: $srcdir/Makefile.in.
	host_xmake_file=../Makefile.in
fi

# Add a definition for INSTALL if system wants one.
# This substitutes for lots of x-* files.
if [ x$host_broken_install = x ]
then true
else
	rm -f Makefile.xx
	abssrcdir=`cd ${srcdir}; pwd`
	sed "s|^INSTALL = .*|INSTALL = ${abssrcdir}/install.sh -c|" Makefile.tem > Makefile.xx
	rm -f Makefile.tem
	mv Makefile.xx Makefile.tem
fi

# Set EXTRA_HEADERS according to header_files.
# This substitutes for lots of t-* files.
if [ x$header_files = x ]
then true
else
	rm -f Makefile.xx
	sed "s/^EXTRA_HEADERS =/EXTRA_HEADERS = $header_files/" Makefile.tem > Makefile.xx
	rm -f Makefile.tem
	mv Makefile.xx Makefile.tem
fi

# Add a definition of USE_COLLECT2 if system wants one.
# Also tell toplev.c what to do.
# This substitutes for lots of t-* files.
if [ x$use_collect2 = x ]
then true
else
	rm -f Makefile.xx
	(echo "USE_COLLECT2 = ld"; echo "MAYBE_USE_COLLECT2 = -DUSE_COLLECT2")\
 	   | cat - Makefile.tem > Makefile.xx
	rm -f Makefile.tem
	mv Makefile.xx Makefile.tem
fi

# Add -DTARGET_CPU_DEFAULT for toplev.c if system wants one.
# This substitutes for lots of *.h files.
if [ x$target_cpu_default = x ]
then true
else
	rm -f Makefile.xx
	(echo "MAYBE_TARGET_DEFAULT = -DTARGET_CPU_DEFAULT=$target_cpu_default")\
 	   | cat - Makefile.tem > Makefile.xx
	rm -f Makefile.tem
	mv Makefile.xx Makefile.tem
fi

# Conditionalize the makefile for this target machine.
if [ -f ${srcdir}/config/${tmake_file} ]
then
	rm -f Makefile.xx
	sed -e "/####target/  r ${srcdir}/config/${tmake_file}" Makefile.tem > Makefile.xx
	echo "Merged ${tmake_file}."
	rm -f Makefile.tem
	mv Makefile.xx Makefile.tem
else
# Say in the makefile that there is no tmake_file,
# by using a name which (when interpreted relative to $srcdir/config)
# will duplicate another dependency: $srcdir/Makefile.in.
	tmake_file=../Makefile.in
fi

# Remove all formfeeds, since some Makes get confused by them.
# Also arrange to give the variables `target', `host_xmake_file',
# `tmake_file', `prefix', `exec_prefix' and `FIXINCLUDES'
# values in the Makefile from the values they have in this script.
rm -f Makefile.xx
sed -e "s///" -e "s/^target=.*$/target=${target}/" \
    -e "s|^xmake_file=.*$|xmake_file=${host_xmake_file}|" \
    -e "s|^tmake_file=.*$|tmake_file=${tmake_file}|" \
    -e "s|^prefix[ 	]*=.*|prefix = $prefix|" \
    -e "s|^exec_prefix[ 	]*=.*|exec_prefix = $exec_prefix|" \
    -e "s|^FIXINCLUDES[ 	]*=.*|FIXINCLUDES = $fixincludes|" \
    Makefile.tem > Makefile.xx
rm -f Makefile.tem
mv Makefile.xx Makefile.tem

# Install Makefile for real, after making final changes.
# Define macro CROSS_COMPILE in compilation if this is a cross-compiler.
# Also use all.cross instead of all.internal, and add cross-make to Makefile.
if [ x$host = x$target ]
then
	rm -f Makefile
  	if [ x$host = x$build ]
	then
		mv Makefile.tem Makefile
	else
#		When build gcc with cross-compiler, we need to fix a
#		few things.
		echo "build= $build" > Makefile
		sed -e "/####build/  r ${srcdir}/build-make" Makefile.tem >> Makefile
		rm -f Makefile.tem Makefile.xx
	fi
else
	rm -f Makefile
	echo "CROSS=-DCROSS_COMPILE" > Makefile
	sed -e "/####cross/  r ${srcdir}/cross-make" Makefile.tem >> Makefile
	rm -f Makefile.tem Makefile.xx
fi

echo "Created \`Makefile'."

if [ xx${vint} != xx ]
then
	vintmsg=" (vint)"
fi

# Describe the chosen configuration in config.status.
# Make that file a shellscript which will reestablish the same configuration.
echo "#!/bin/sh
# GCC was configured as follows:
${srcdir}/configure" $arguments > config.status
echo echo host=$canon_host target=$canon_target build=$canon_build >> config.status
chmod a+x config.status

if [ x$canon_host = x$canon_target ]
then
	echo "Links are now set up for target $canon_target."
else
	echo "Links are now set up for host $canon_host and target $canon_target."
fi

exit 0