configure.in: Simplify language enabling/disabling code.

* configure.in: Simplify language enabling/disabling code.
* configure: Rebuilt.
* ch/config-lang.in (target_libs): Set.
(build_by_default): Set to no.
* cp/config-lang.in (target_libs): Set.
* f/config-lang.in (target_libs): Set.
* java/config-lang.in (target_libs): Set.
* objc/config-lang.in (target_libs): Set.

From-SVN: r38207

gcc/ChangeLog

+2000-12-12  Alexandre Oliva  <aoliva@redhat.com>
+
+	* configure.in: Simplify language enabling/disabling code.
+	* configure: Rebuilt.
+	* ch/config-lang.in (target_libs): Set.
+	(build_by_default): Set to no.
+	* cp/config-lang.in (target_libs): Set.
+	* f/config-lang.in (target_libs): Set.
+	* java/config-lang.in (target_libs): Set.
+	* objc/config-lang.in (target_libs): Set.
+
 2000-12-12  Neil Booth  <neil@daikokuya.demon.co.uk>
 
         * tradcpp.c (enum node_type): Add T_ERROR.

gcc/ch/config-lang.in

 # Top level configure fragment for GNU CHILL.
-#   Copyright (C) 1994 Free Software Foundation, Inc.
+#   Copyright (C) 1994, 2000 Free Software Foundation, Inc.
 
 #This file is part of GNU CC.
 
@@ -36,3 +36,6 @@ diff_excludes="-x -x ch/chill.info*"
 
 outputs=ch/Makefile
 
+target_libs=target-libchill
+
+build_by_default=no

gcc/configure.in

@@ -1499,23 +1499,19 @@ changequote(,)dnl
 	${srcdir}/[*]/config-lang.in) ;;
 	*)
 	  lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ 	]*\).*$,\1,p' $lang`
+	  this_lang_libs=`sed -n -e 's,^target_libs=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^target_libs=\([^ 	]*\).*$,\1,p' $lang`
+	  build_by_default=`sed -n -e 's,^build_by_default=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^build_by_default=\([^ 	]*\).*$,\1,p' $lang`
 	  if test "x$lang_alias" = x
 	  then
 		echo "$lang doesn't set \$language." 1>&2
 		exit 1
 	  fi
-	  if test x"${enable_languages}" = xall && test x"${lang_alias}" != xCHILL; then
-	  	add_this_lang=yes
-	  else
-		case "${enable_languages}" in
-		    ${lang_alias} | "${lang_alias},"* | *",${lang_alias},"* | *",${lang_alias}" )
-			add_this_lang=yes
-			;;
-		    * )
-			add_this_lang=no
-			;;
-		esac
-	  fi
+	  case ${build_by_default},${enable_languages}, in
+	  *,$lang_alias,*) add_this_lang=yes ;;
+	  no,*) add_this_lang=no ;;
+	  *,all,*) add_this_lang=yes ;;
+	  *) add_this_lang=no ;;
+	  esac
 	  if test x"${add_this_lang}" = xyes; then
 		case $lang in
 		    ${srcdir}/ada/config-lang.in)

gcc/cp/config-lang.in

 # Top level configure fragment for GNU C++.
-#   Copyright (C) 1994, 1995, 1997, 1998 Free Software Foundation, Inc.
+#   Copyright (C) 1994, 1995, 1997, 1998, 2000 Free Software Foundation, Inc.
 
 #This file is part of GNU CC.
 
@@ -33,3 +33,5 @@ compilers="cc1plus\$(exeext)"
 stagestuff="g++\$(exeext) g++-cross\$(exeext) cc1plus\$(exeext)"
 
 diff_excludes="-x parse.c -x parse.h"
+
+target_libs=${libstdcxx_version}

gcc/f/config-lang.in

 # Top level configure fragment for GNU FORTRAN.
-#   Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
+#   Copyright (C) 1995, 1996, 1997, 2000 Free Software Foundation, Inc.
 
 #This file is part of GNU Fortran.
 
@@ -33,3 +33,5 @@ compilers="f771\$(exeext)"
 stagestuff="g77\$(exeext) g77-cross\$(exeext) f771\$(exeext)"
 
 diff_excludes="-x f/BUGS -x f/NEWS -x f/INSTALL -x f/intdoc.texi"
+
+target_libs=target-libf2c

gcc/java/config-lang.in

 # Top level configure fragment for the GNU compiler for the Java(TM)
 # language.
-#  Copyright (C) 1994, 1995 Free Software Foundation, Inc.
+#  Copyright (C) 1994, 1995, 2000 Free Software Foundation, Inc.
 
 #This file is part of GNU CC.
 
@@ -36,3 +36,5 @@ language="java"
 compilers="jc1\$(exeext) jvgenmain\$(exeext)"
 
 stagestuff="jc1\$(exeext) gcj\$(exeext) jvgenmain\$(exeext) gcjh\$(exeext) jv-scan\$(exeext) jcf-dump\$(exeext)"
+
+target_libs=${libgcj}

gcc/objc/config-lang.in

 # Top level configure fragment for the GNU Objective-C Runtime Library.
-#   Copyright (C) 1997, 1998 Free Software Foundation, Inc.
+#   Copyright (C) 1997, 1998, 2000 Free Software Foundation, Inc.
 
 #This file is part of GNU CC.
 
@@ -33,3 +33,5 @@ compilers="cc1obj\$(exeext)"
 stagestuff=""
 
 diff_excludes="-x objc-parse.c -x objc-parse.y "
+
+target_libs=target-libobjc