diff --git a/configure b/configure
index 79b4378..5a786f7 100755
--- a/configure
+++ b/configure
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.53 for openggsn 0.52.
+# Generated by GNU Autoconf 2.53 for openggsn 0.60.
 #
 # Report bugs to <jj@openggsn.org>.
 #
@@ -415,8 +415,8 @@
 # Identity of this package.
 PACKAGE_NAME='openggsn'
 PACKAGE_TARNAME='openggsn'
-PACKAGE_VERSION='0.52'
-PACKAGE_STRING='openggsn 0.52'
+PACKAGE_VERSION='0.60'
+PACKAGE_STRING='openggsn 0.60'
 PACKAGE_BUGREPORT='jj@openggsn.org'
 
 ac_unique_file="gtp/gtp.c"
@@ -929,7 +929,7 @@
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-\`configure' configures openggsn 0.52 to adapt to many kinds of systems.
+\`configure' configures openggsn 0.60 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -995,7 +995,7 @@
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of openggsn 0.52:";;
+     short | recursive ) echo "Configuration of openggsn 0.60:";;
    esac
   cat <<\_ACEOF
 
@@ -1006,6 +1006,7 @@
   --enable-static=PKGS  build static libraries default=yes
   --enable-fast-install=PKGS  optimize for fast installation default=yes
   --disable-libtool-lock  avoid locking (might break parallel builds)
+  --enable-static-exec  Enable static linking of executables
   --disable-dependency-tracking Speeds up one-time builds
   --enable-dependency-tracking  Do not reject slow dependency extractors
 
@@ -1092,7 +1093,7 @@
 test -n "$ac_init_help" && exit 0
 if $ac_init_version; then
   cat <<\_ACEOF
-openggsn configure 0.52
+openggsn configure 0.60
 generated by GNU Autoconf 2.53
 
 Copyright 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2002
@@ -1107,7 +1108,7 @@
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by openggsn $as_me 0.52, which was
+It was created by openggsn $as_me 0.60, which was
 generated by GNU Autoconf 2.53.  Invocation command line was
 
   $ $0 $@
@@ -4211,7 +4212,7 @@
 case $host in
 *-*-irix6*)
   # Find out which ABI we are using.
-  echo '#line 4214 "configure"' > conftest.$ac_ext
+  echo '#line 4215 "configure"' > conftest.$ac_ext
   if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   (eval $ac_compile) 2>&5
   ac_status=$?
@@ -4747,7 +4748,7 @@
 save_CFLAGS="$CFLAGS"
 CFLAGS="$CFLAGS -o out/conftest2.$ac_objext"
 compiler_c_o=no
-if { (eval echo configure:4750: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>out/conftest.err; } && test -s out/conftest2.$ac_objext; then
+if { (eval echo configure:4751: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>out/conftest.err; } && test -s out/conftest2.$ac_objext; then
   # The compiler can only warn and ignore the option if not recognized
   # So say no if there are warnings
   if test -s out/conftest.err; then
@@ -6540,7 +6541,7 @@
     lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<EOF
-#line 6543 "configure"
+#line 6544 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -6638,7 +6639,7 @@
     lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<EOF
-#line 6641 "configure"
+#line 6642 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -7364,188 +7365,21 @@
 
 
 
+# Check whether --enable-static-exec or --disable-static-exec was given.
+if test "${enable_static_exec+set}" = set; then
+  enableval="$enable_static_exec"
+   EXEC_LDFLAGS="-all-static"
+fi;
+
+
 
 # Checks for libraries.
 # FIXME: Replace `main' with a function in `-le':
-
-echo "$as_me:$LINENO: checking for main in -le" >&5
-echo $ECHO_N "checking for main in -le... $ECHO_C" >&6
-if test "${ac_cv_lib_e_main+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-le  $LIBS"
-cat >conftest.$ac_ext <<_ACEOF
-#line $LINENO "configure"
-#include "confdefs.h"
-
-
-#ifdef F77_DUMMY_MAIN
-#  ifdef __cplusplus
-     extern "C"
-#  endif
-   int F77_DUMMY_MAIN() { return 1; }
-#endif
-int
-main ()
-{
-main ();
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-         { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  ac_cv_lib_e_main=yes
-else
-  echo "$as_me: failed program was:" >&5
-cat conftest.$ac_ext >&5
-ac_cv_lib_e_main=no
-fi
-rm -f conftest.$ac_objext conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-echo "$as_me:$LINENO: result: $ac_cv_lib_e_main" >&5
-echo "${ECHO_T}$ac_cv_lib_e_main" >&6
-if test $ac_cv_lib_e_main = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LIBE 1
-_ACEOF
-
-  LIBS="-le $LIBS"
-
-fi
-
+#AC_CHECK_LIB([e], [main])
 # FIXME: Replace `main' with a function in `-lgtp':
-
-echo "$as_me:$LINENO: checking for main in -lgtp" >&5
-echo $ECHO_N "checking for main in -lgtp... $ECHO_C" >&6
-if test "${ac_cv_lib_gtp_main+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lgtp  $LIBS"
-cat >conftest.$ac_ext <<_ACEOF
-#line $LINENO "configure"
-#include "confdefs.h"
-
-
-#ifdef F77_DUMMY_MAIN
-#  ifdef __cplusplus
-     extern "C"
-#  endif
-   int F77_DUMMY_MAIN() { return 1; }
-#endif
-int
-main ()
-{
-main ();
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-         { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  ac_cv_lib_gtp_main=yes
-else
-  echo "$as_me: failed program was:" >&5
-cat conftest.$ac_ext >&5
-ac_cv_lib_gtp_main=no
-fi
-rm -f conftest.$ac_objext conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-echo "$as_me:$LINENO: result: $ac_cv_lib_gtp_main" >&5
-echo "${ECHO_T}$ac_cv_lib_gtp_main" >&6
-if test $ac_cv_lib_gtp_main = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LIBGTP 1
-_ACEOF
-
-  LIBS="-lgtp $LIBS"
-
-fi
-
+#AC_CHECK_LIB([gtp], [main])
 # FIXME: Replace `main' with a function in `-links':
-
-echo "$as_me:$LINENO: checking for main in -links" >&5
-echo $ECHO_N "checking for main in -links... $ECHO_C" >&6
-if test "${ac_cv_lib_inks_main+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-links  $LIBS"
-cat >conftest.$ac_ext <<_ACEOF
-#line $LINENO "configure"
-#include "confdefs.h"
-
-
-#ifdef F77_DUMMY_MAIN
-#  ifdef __cplusplus
-     extern "C"
-#  endif
-   int F77_DUMMY_MAIN() { return 1; }
-#endif
-int
-main ()
-{
-main ();
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-         { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  ac_cv_lib_inks_main=yes
-else
-  echo "$as_me: failed program was:" >&5
-cat conftest.$ac_ext >&5
-ac_cv_lib_inks_main=no
-fi
-rm -f conftest.$ac_objext conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-echo "$as_me:$LINENO: result: $ac_cv_lib_inks_main" >&5
-echo "${ECHO_T}$ac_cv_lib_inks_main" >&6
-if test $ac_cv_lib_inks_main = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LIBINKS 1
-_ACEOF
-
-  LIBS="-links $LIBS"
-
-fi
-
+#AC_CHECK_LIB([inks], [main])
 
 # Checks for header files.
 echo "$as_me:$LINENO: checking for ANSI C header files" >&5
@@ -8814,7 +8648,7 @@
 
 # Define the identity of the package.
  PACKAGE=openggsn
- VERSION=0.52
+ VERSION=0.60
 
 
 cat >>confdefs.h <<_ACEOF
@@ -9079,7 +8913,7 @@
 
 
 
-ac_config_files="$ac_config_files Makefile doc/Makefile ggsn/Makefile gtp/Makefile intl/Makefile po/Makefile sgsnemu/Makefile src/Makefile tests/Makefile"
+ac_config_files="$ac_config_files Makefile doc/Makefile ggsn/Makefile gtp/Makefile intl/Makefile po/Makefile sgsnemu/Makefile src/Makefile tests/Makefile openggsn.spec"
 
 cat >confcache <<\_ACEOF
 # This file is a shell script that caches the results of configure
@@ -9413,7 +9247,7 @@
 } >&5
 cat >&5 <<_CSEOF
 
-This file was extended by openggsn $as_me 0.52, which was
+This file was extended by openggsn $as_me 0.60, which was
 generated by GNU Autoconf 2.53.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -9475,7 +9309,7 @@
 
 cat >>$CONFIG_STATUS <<_ACEOF
 ac_cs_version="\\
-openggsn config.status 0.52
+openggsn config.status 0.60
 configured by $0, generated by GNU Autoconf 2.53,
   with options \\"`echo "$ac_configure_args" | sed 's/[\\""\`\$]/\\\\&/g'`\\"
 
@@ -9578,6 +9412,7 @@
   "sgsnemu/Makefile" ) CONFIG_FILES="$CONFIG_FILES sgsnemu/Makefile" ;;
   "src/Makefile" ) CONFIG_FILES="$CONFIG_FILES src/Makefile" ;;
   "tests/Makefile" ) CONFIG_FILES="$CONFIG_FILES tests/Makefile" ;;
+  "openggsn.spec" ) CONFIG_FILES="$CONFIG_FILES openggsn.spec" ;;
   "depfiles" ) CONFIG_COMMANDS="$CONFIG_COMMANDS depfiles" ;;
   "config.h" ) CONFIG_HEADERS="$CONFIG_HEADERS config.h" ;;
   *) { { echo "$as_me:$LINENO: error: invalid argument: $ac_config_target" >&5
@@ -9692,6 +9527,7 @@
 s,@STRIP@,$STRIP,;t t
 s,@ac_ct_STRIP@,$ac_ct_STRIP,;t t
 s,@LIBTOOL@,$LIBTOOL,;t t
+s,@EXEC_LDFLAGS@,$EXEC_LDFLAGS,;t t
 s,@LIBOBJS@,$LIBOBJS,;t t
 s,@PACKAGE@,$PACKAGE,;t t
 s,@VERSION@,$VERSION,;t t