+2013-06-27  Yao Qi  <yao@codesourcery.com>
+
+       * common/create-version.sh: Update comments.  Handle the case
+       that TARGET_ALIAS is empty.
+
 2013-06-26  Pedro Alves  <palves@redhat.com>
 
        * infrun.c (SOLIB_IN_DYNAMIC_LINKER): Delete macro and describing
 
 # Create version.c from version.in.
 # Usage:
 #    create-version.sh PATH-TO-GDB-SRCDIR HOST_ALIAS \
-#        TARGET_ALIAS OUTPUT-FILE-NAME
+#        [TARGET_ALIAS] OUTPUT-FILE-NAME
 
 srcdir="$1"
 host_alias="$2"
-target_alias="$3"
-output="$4"
+
+if [ "$#" = "4" ]; then
+    target_alias="$3"
+    output="$4"
+else
+    output="$3"
+fi
 
 rm -f version.c-tmp $output version.tmp
 date=`sed -n -e 's/^.* BFD_VERSION_DATE \(.*\)$/\1/p' $srcdir/../bfd/version.h`
 echo '#include "version.h"' >> version.c-tmp
 echo 'const char version[] = "'"`sed q version.tmp`"'";' >> version.c-tmp
 echo 'const char host_name[] = "'"$host_alias"'";' >> version.c-tmp
-echo 'const char target_name[] = "'"$target_alias"'";' >> version.c-tmp
+
+if [ "$#" = "4" ]; then
+    echo 'const char target_name[] = "'"$target_alias"'";' >> version.c-tmp
+fi
+
 mv version.c-tmp $output
 rm -f version.tmp