# configure.lang for GNU CC
# This script is run by configure for configuration of language
# subdirectories which conform to the old GCC configure mechansim
# for such subdirectories.

# Copyright (C) 1997 Free Software Foundation, Inc.

#This file is part of GNU CC.

#GNU CC is free software; you can redistribute it and/or modify
#it under the terms of the GNU General Public License as published by
#the Free Software Foundation; either version 2, or (at your option)
#any later version.

#GNU CC is distributed in the hope that it will be useful,
#but WITHOUT ANY WARRANTY; without even the implied warranty of
#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#GNU General Public License for more details.

#You should have received a copy of the GNU General Public License
#along with GNU CC; see the file COPYING.  If not, write to
#the Free Software Foundation, 59 Temple Place - Suite 330,
#Boston, MA 02111-1307, USA.

savesrcdir=$srcdir
for subdir in . $subdirs
do
	oldsrcdir=$savesrcdir

	# Re-adjust the path
	case $oldsrcdir in
	/*)
		case $subdir in
		.)
			srcdir=$oldsrcdir
			;;
		*)
			srcdir=$oldsrcdir/$subdir
			;;
		esac
		;;
	*)
		case $subdir in
		.)
			;;
		*)
			oldsrcdir=../${oldsrcdir}
			srcdir=$oldsrcdir/$subdir
			;;
		esac
		;;
	esac
	mainsrcdir=$oldsrcdir
	STARTDIR=`pwd`
	test -d $subdir || mkdir $subdir
	cd $subdir

	# 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 $srcdir in
	. | ./$subdir | .././$subdir)
		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 ${srcdir}" >> .gdbinit
		if [ x$gdb_needs_out_file_path = xyes ]
		then
			echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
		fi
		if [ "x$subdirs" != x ]; then
			for s in $subdirs
			do
				echo "dir ${srcdir}/$s" >> .gdbinit
			done
		fi
		echo "source ${srcdir}/.gdbinit" >> .gdbinit
		;;
	esac

	# Conditionalize the makefile for this host machine.
	rm -f Makefile.xx Makefile.ll
	merged_frags=
	for f in .. ${host_xmake_file}
	do
		if [ -f ${mainsrcdir}/config/$f ]
		then
			cat ${mainsrcdir}/config/$f >> Makefile.ll
			if [ x"${merged_frags}" != x ]
			then
				merged_frags="${merged_frags} and "
			fi
			merged_frags="${merged_frags}${f}"
		fi
	done
	if [ x"${merged_frags}" != x ]
	then
		sed -e "/####host/  r Makefile.ll" Makefile.tem > Makefile.xx
		echo "Merged ${merged_frags}."
		rm -f Makefile.tem
		mv Makefile.xx Makefile.tem
		rm -f Makefile.ll
	fi

	# Add a definition for MAKE if system wants one.
	case "$SET_MAKE" in
	?*)
		rm -f Makefile.xx
		(echo "$SET_MAKE"; cat Makefile.tem) >Makefile.xx
		rm -f Makefile.tem
		mv Makefile.xx Makefile.tem
	esac

	# Add a definition for INSTALL if system wants one.
	# This substitutes for lots of x-* files.
	if [ x$build_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

	# Some of the following don't make sense in the language makefiles,
	# but rather than introduce another level of nesting, we leave them
	# as is.

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

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

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

	# Set EXTRA_PROGRAMS according to extra_programs.
	if [ "x$extra_programs" = x ]
	then true
	else
		rm -f Makefile.xx
		sed "s/^EXTRA_PROGRAMS =/EXTRA_PROGRAMS = $extra_programs/" Makefile.tem > Makefile.xx
		rm -f Makefile.tem
		mv Makefile.xx Makefile.tem
	fi

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

	# Set EXTRA_GCC_OBJS according to host_extra_gcc_objs.
	# This substitutes for lots of x-* files.
	if [ "x$host_extra_gcc_objs" = x ]
	then true
	else
		rm -f Makefile.xx
		sed "s|^EXTRA_GCC_OBJS =|EXTRA_GCC_OBJS = $host_extra_gcc_objs|"
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
		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

	# Set MD_DEPS if the real md file is in md.pre-cpp.
	# Set MD_CPP to the cpp to pass the md file through.  Md files use ';'
	# for line oriented comments, so we must always use a GNU cpp.  If
	# building gcc with a cross compiler, use the cross compiler just
	# built.  Otherwise, we can use the cpp just built.
	if [ "x$md_cppflags" != x ]
	then
		rm -f Makefile.xx
	  	(if [ x$host = x$build ] ; then
			echo "MD_DEPS = $(md_file) cpp" ; echo "MD_CPP = ./cpp"
		else
			echo "MD_DEPS = md.pre-cpp" ; echo "MD_CPP = \$(HOST_CC) -x c -E"
		fi
		echo "MD_CPPFLAGS = $md_cppflags") | \
		  cat - Makefile.tem | sed -e "s|^MD_FILE[ 	]*=.*|MD_FILE = md|" > Makefile.xx
		rm -f Makefile.tem
		mv Makefile.xx Makefile.tem
	fi

	# If using -program-transform-name, override the installation names.
	if [ "x${program_transform_set}" = "xyes" ] ; then
		sed -e "s/^program_transform_name[ 	]*=.*$/program_transform_name =
$program_transform_name/" \
		    -e "s/^program_transform_cross_name[
]*=.*$/program_transform_cross_name = $program_transform_name/" \
		    Makefile.tem > Makefile.xx
		rm -f Makefile.tem
		mv Makefile.xx Makefile.tem
	fi

	# Conditionalize the makefile for this target machine.
	rm -f Makefile.xx Makefile.ll
	merged_frags=
	for f in .. ${tmake_file}
	do
		if [ -f ${mainsrcdir}/config/$f ]
		then
			cat ${mainsrcdir}/config/$f >> Makefile.ll
			if [ x"${merged_frags}" != x ]
			then
				merged_frags="${merged_frags} and "
			fi
			merged_frags="${merged_frags}$f"
		fi
	done
	if [ x"${merged_frags}" != x ]
	then
		sed -e "/####target/  r Makefile.ll" Makefile.tem > Makefile.xx
		echo "Merged ${merged_frags}."
		rm -f Makefile.tem
		mv Makefile.xx Makefile.tem
		rm -f Makefile.ll
	fi

	# If this is the top level Makefile, add the language fragments.
	# Languages are added via two mechanisms.  Some information must be
	# recorded in makefile variables, these are defined in config-lang.in.
	# We accumulate them and plug them into the main Makefile.
	# The other mechanism is a set of hooks for each of the main targets
	# like `clean', `install', etc.
	if [ $subdir = . ]
	then
		rm -f Makefile.xx Makefile.ll
		touch Makefile.ll
		sed -e "/####language fragments/ r Makefile.ll" Makefile.tem > Makefile.xx
		rm -f Makefile.tem
		mv Makefile.xx Makefile.tem
		subdirs=`echo $subdirs`
		sed -e "s|^SUBDIRS[ 	]*=.*$|SUBDIRS = $subdirs|" \
		    -e "s|^LANGUAGES[ 	]*=[ 	]*\(.*\)$|LANGUAGES = \1 $all_languages|" \
		    -e "s|^BOOT_LANGUAGES[ 	]*=[ 	]*\(.*\)$|BOOT_LANGUAGES = \1 $all_boot_languages|" \
		    -e "s|^COMPILERS[ 	]*=[ 	]*\(.*\)$|COMPILERS = \1 $all_compilers|" \
		    -e "s|^LANG_MAKEFILES[ 	]*=.*$|LANG_MAKEFILES = $all_lang_makefiles|" \
		    -e "s|^LANG_STAGESTUFF[ 	]*=.*$|LANG_STAGESTUFF = $all_stagestuff|" \
		    -e "s|^LANG_DIFF_EXCLUDES[ 	]*=.*$|LANG_DIFF_EXCLUDES = $all_diff_excludes|" \
		    -e "s|^LANG_EXTRA_HEADERS[ 	]*=.*$|LANG_EXTRA_HEADERS = $all_headers|" \
		    -e "s|^LANG_LIB2FUNCS[ 	]*=.*$|LANG_LIB2FUNCS = $all_lib2funcs|" \
		    Makefile.tem > Makefile.xx
		rm -f Makefile.tem
		mv Makefile.xx Makefile.tem

		# Since we can't use `::' targets, we link each language in
		# with a set of hooks, reached indirectly via lang.${target}.
		rm -f Makefile.ll
		for t in $target_list
		do
			x=
			for l in .. $all_languages
			do
				if [ $l != ".." ]; then
					x="$x $l.$t"
				fi
			done
			echo "lang.$t: $x" >> Makefile.ll
		done
		sed -e "/####language hooks/ r Makefile.ll" Makefile.tem > Makefile.xx
		rm -f Makefile.tem
		mv Makefile.xx Makefile.tem
		rm -f Makefile.ll

		# If the host doesn't support symlinks, modify CC in
		# FLAGS_TO_PASS so CC="stage1/xgcc -Bstage1/" works.
		# Otherwise, we can use "CC=$(CC)".
		rm -f symtest.tem
		if $symbolic_link symtest1.tem symtest.tem 2>/dev/null
		then
			sed -e 's,CC=set-by-configure,CC=$(CC),' \
			    Makefile.tem > Makefile.xx
			sed -e 's,STAGE_PREFIX=set-by-configure,STAGE_PREFIX=$(STAGE_PREFIX),' \
			    Makefile.xx > Makefile.yy
		else
			sed -e "s,CC=set-by-configure,CC=\`case '\$(CC)' in *stage*) echo '\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\$(CC)';; esac\`," \
			    Makefile.tem > Makefile.xx
			sed -e "s,STAGE_PREFIX=set-by-configure,STAGE_PREFIX=\`case '\$(STAGE_PREFIX)' in stage*) echo '\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\$(STAGE_PREFIX)';; esac\`," \
			    Makefile.xx > Makefile.yy
		fi
		rm -f Makefile.tem Makefile.xx
		mv Makefile.yy Makefile.tem
		rm -f symtest.tem

		if [ "x$all_languages" != x ]
		then
			# Missing space after `Merged' is intentional.
			echo "Merged$all_languages fragment(s)."
		fi

	# Otherwise, this is a language subdirectory.  If the host supports
	# symlinks, point stage[123] at ../stage[123] so bootstrapping and the
	# installation procedure can still use CC="stage1/xgcc -Bstage1/".
	# If the host doesn't support symlinks, FLAGS_TO_PASS has been
	# modified to solve the problem there.
	else
		for t in stage1 stage2 stage3 stage4 include
		do
			rm -f $t
			$symbolic_link ../$t $t 2>/dev/null
		done
	fi

	# Remove all formfeeds, since some Makes get confused by them.
	# Also arrange to give the variables `target', `host_xmake_file',
	# `tmake_file', `prefix', `local_prefix', `exec_prefix', `FIXINCLUDES'
	# `out_file', `out_object', `md_file', `lang_specs_files',
	# `lang_options_files', `INSTALL_HEADERS_DIR', and `CROSS_FLOAT_H'
	# values in the Makefile from the values they have in this script.
	rm -f Makefile.xx
	rm -f aux-output.c aux-output.o md
	# Create an empty Makefile.sed first, to work around a Nextstep 3.3 bug.
	echo 's|||' > Makefile.sed
	rm Makefile.sed
	echo 's|||' > Makefile.sed
	echo "s|^target=.*$|target=${target}|" >> Makefile.sed
	echo "s|^target_alias=.*$|target_alias=${target}|" >> Makefile.sed
	echo "s|^xmake_file=.*$|xmake_file=${dep_host_xmake_file}|" >> Makefile.sed
	echo "s|^tmake_file=.*$|tmake_file=${dep_tmake_file}|" >> Makefile.sed
	echo "s|^version=.*$|version=${version}|" >> Makefile.sed
	echo "s|^version=.*$|version=${version}|" >> Makefile.sed
	echo "s|^out_file=.*$|out_file=${srcdir}/config/${out_file}|" >> Makefile.sed
	echo "s|^out_object_file=.*$|out_object_file=${out_object_file}|" >> Makefile.sed
	echo "s|^md_file=.*$|md_file=${md_file}|" >> Makefile.sed
	echo "s|^tm_file=.*$|tm_file=${tm_file_sub}|" >> Makefile.sed
	echo "s|^host_xm_file=.*$|host_xm_file=${host_xm_file_sub}|" >> Makefile.sed
	echo "s|^build_xm_file=.*$|build_xm_file=${build_xm_file_sub}|" >> Makefile.sed
	echo "s|^lang_specs_files=.*$|lang_specs_files=${lang_specs_files}|" >> Makefile.sed
	echo "s|^lang_options_files=.*$|lang_options_files=${lang_options_files}|" >> Makefile.sed
	echo "s|^OBJC_THREAD_FILE=.*$|OBJC_THREAD_FILE=thr-${objc_thread_file}|" >> Makefile.sed
	echo "s|^prefix[ 	]*=.*|prefix = $prefix|" >> Makefile.sed
	echo "s|^local_prefix[ 	]*=.*|local_prefix = $local_prefix|" >> Makefile.sed
	echo "s|^exec_prefix[ 	]*=.*|exec_prefix = $exec_prefix|" >> Makefile.sed
	echo "s|^FIXINCLUDES[ 	]*=.*|FIXINCLUDES = $fixincludes|" >> Makefile.sed
	echo "s|^INSTALL_HEADERS_DIR[ 	]*=.*$|INSTALL_HEADERS_DIR = ${build_install_headers_dir}|" >> Makefile.sed
	echo "s|^exeext[ 	]*=.*$|exeext = ${build_exeext}|" >> Makefile.sed
	echo "s|^CROSS_FLOAT_H[	]*=.*|CROSS_FLOAT_H=\$(srcdir)/config/float-${float_format}.h|" >> Makefile.sed
	sed -f Makefile.sed Makefile.tem > Makefile.xx
	rm -f Makefile.tem Makefile.sed
	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.xx
		echo "CROSS=-DCROSS_COMPILE" > Makefile.xx
		sed -e "/####cross/  r ${mainsrcdir}/cross-make" Makefile.tem >> Makefile.xx
		rm -f Makefile.tem
		mv Makefile.xx Makefile.tem
	fi

	# When building gcc with a cross-compiler, we need to fix a few things.
	# This must come after cross-make as we want all.build to override
	# all.cross.
  	if [ x$build != x$host ]
	then
		rm -f Makefile.xx
		echo "build= $build" > Makefile.xx
		echo "host= $host" >> Makefile.xx
    		sed -e "s|objc-runtime$||" \
		    -e "/####build/  r ${mainsrcdir}/build-make" Makefile.tem >> Makefile.xx
		rm -f Makefile.tem
		mv Makefile.xx Makefile.tem
	fi

	if [ $subdir != . ]
	then
		rm -f Makefile
		mv Makefile.tem Makefile
		echo "Created \`$subdir/Makefile'."
	else
		rm -f Makefile.tem
	fi

	cd $STARTDIR
done   # end of current-dir SUBDIRS loop

srcdir=$savesrcdir