info: fix invoking info failed

new file mode 100644
index 0000000..983d54f
@@ -0,0 +1,77 @@
+#!/bin/sh
+# update-info-dir
+# create a dir file from all installed info files
+# Copyright 2009 Norbert Preining
+# GPLv2
+
+INFODIR=$D${infodir}
+
+set -e
+
+#
+# since user's environment is taken over into root account when sudo-ing
+# we don't want that one's user LANGUAGE setting changes the messages in
+# the dir file. Force it to C. See bug #536476
+LANGUAGE="C"
+LANG="C"
+
+Help ()
+{
+    echo "\
+SYNOPSIS: update-info-dir [-h,--help] [info-directory]
+
+(re-)creates the index of available documentation in info format
+(the file /usr/share/info/dir) which is usually presented by info browsers
+on startup."
+
+    exit 0
+}
+
+
+if [ "$1" = "-h" ] || [ "$1" = "--help" ]; then
+    Help
+fi
+
+if [ -n "$1" ] ; then
+  INFODIR="$1"
+fi
+
+if [ ! -d "$INFODIR" ] ; then
+  echo "Not a directory: $INFODIR."
+  exit 0
+fi
+
+if [ -r "$INFODIR/dir" ] ; then
+  rm -f "$INFODIR/dir.old"
+  cp $INFODIR/dir $INFODIR/dir.old
+fi
+
+# we have to remove the dir file not make ginstall-info being surprised
+rm -f "$INFODIR/dir"
+
+errors=0
+find "$INFODIR" -type f | while read file ; do
+  case $file in
+    */dir|*/dir.old| \
+    *-[0-9]|*-[0-9].gz|*-[0-9].xz|*-[0-9].bz2| \
+    *-[1-9][0-9]|*-[1-9][0-9].gz|*-[1-9][0-9].xz|*-[1-9][0-9].bz2| \
+    *.png)
+      # these files are ignored
+      continue
+      ;;
+    *)
+      ${STAGING_BINDIR_NATIVE}/install-info "$file" "$INFODIR/dir" || {
+        errors=`expr $errors + 1`
+      }
+      ;;
+  esac
+done
+
+if [ $errors -gt 0 ] ; then
+  echo "Updating the index of info documentation produced $errors errors."
+  exit 1
+fi
+
+exit 0
+
+# vim:set expandtab tabstop=2: #

index cf9dcfd..0361607 100644
@@ -74,4 +74,65 @@ FILES_${PN}-doc = "${infodir}/texinfo* \
                    ${datadir}/${tex_texinfo} \
                    ${mandir}/man1 ${mandir}/man5"
 
+pkg_postinst_info () {
+if [ "x$D" != "x" ]; then
+    $INTERCEPT_DIR/postinst_intercept update_info_dir ${PKG} \
+        mlprefix=${MLPREFIX} infodir=${infodir} STAGING_BINDIR_NATIVE=${STAGING_BINDIR_NATIVE}
+else
+    if [ ! -d "${infodir}" ]; then
+        exit 0
+    fi
+
+    errors=0
+    find "${infodir}" -type f | while read file ; do
+        case $file in
+        */dir| */dir.old| \
+        *-[0-9]|*-[0-9].gz|*-[0-9].xz|*-[0-9].bz2| \
+        *-[1-9][0-9]|*-[1-9][0-9].gz|*-[1-9][0-9].xz|*-[1-9][0-9].bz2| \
+        *.png)
+            # these files are ignored
+            continue
+            ;;
+        *)
+            install-info "$file" "${infodir}/dir" || {
+                errors=`expr $errors + 1`
+            }
+            ;;
+        esac
+    done
+    if [ $errors -gt 0 ] ; then
+        echo "Updating the index of info documentation produced $errors errors."
+        exit 1
+    fi
+fi
+}
+
+pkg_prerm_info () {
+if [ ! -d "$D${infodir}" ]; then
+    exit 0
+fi
+
+errors=0
+find "$D${infodir}" -type f | while read file ; do
+    case $file in
+    */dir|*/dir.old| \
+    *-[0-9]|*-[0-9].gz|*-[0-9].xz|*-[0-9].bz2| \
+    *-[1-9][0-9]|*-[1-9][0-9].gz|*-[1-9][0-9].xz|*-[1-9][0-9].bz2| \
+    *.png)
+        # these files are ignored
+        continue
+        ;;
+    *)
+        install-info --delete "$file" "$D${infodir}/dir" || {
+            errors=`expr $errors + 1`
+        }
+        ;;
+    esac
+done
+
+if [ $errors -gt 0 ] ; then
+    echo "Cleaning the index of info documentation produced $errors errors."
+fi
+}
+
 BBCLASSEXTEND = "native"