configure.in: Disable language-specific target libraries for languages that aren't enabled.

* configure.in: Disable language-specific target libraries for
languages that aren't enabled.

From-SVN: r38206

ChangeLog

+2000-12-12  Alexandre Oliva  <aoliva@redhat.com>
+
+	* configure.in: Disable language-specific target libraries for
+	languages that aren't enabled.
+
 2000-12-10  Anthony Green  <green@redhat.com>
 
 	* configure.in: Define libgcj.  Disable libgcj target libraries for

configure.in

@@ -980,6 +980,55 @@ if [ x$with_gnu_as = xno ]; then
   noconfigdirs="$noconfigdirs gas"
 fi
 
+# Figure out what language subdirectories are present.
+# Look if the user specified --enable-languages="..."; if not, use
+# the environment variable $LANGUAGES if defined. $LANGUAGES might
+# go away some day.
+if test x"${enable_languages+set}" != xset; then
+	if test x"${LANGUAGES+set}" = xset; then
+		enable_languages="`echo ${LANGUAGES} | tr ' ' ','`"
+	else
+		enable_languages=all
+	fi
+else
+	if test x"${enable_languages}" = x; then
+		echo configure.in: --enable-languages needs at least one argument 1>&2
+		exit 1
+	fi
+fi
+subdirs=
+for lang in ${srcdir}/gcc/*/config-lang.in ..
+do
+	case $lang in
+	..) ;;
+	# The odd quoting in the next line works around
+	# an apparent bug in bash 1.12 on linux.
+	${srcdir}/gcc/[*]/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
+	  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
+	      eval target_libs='"$target_libs "'\"$this_lang_libs\"
+	  else
+	      eval noconfigdirs='"$noconfigdirs "'\"$this_lang_libs\"
+	  fi
+	  ;;
+	esac
+done
+
+
 # Remove the entries in $skipdirs and $noconfigdirs from $configdirs and
 # $target_configdirs.
 # If we have the source for $noconfigdirs entries, add them to $notsupp.