diff --git a/configure b/configure
index 831991fc0c04d024a7831668f3934719c02c1c61..4028c30f9eb4210168c330362badedc15401e8a9 100755
--- a/configure
+++ b/configure
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.69 for trivia <1.0.0>.
+# Generated by GNU Autoconf 2.69 for trivia 1:0.
 #
 # Report bugs to <http://apps.jcns.fz-juelich.de/frida>.
 #
@@ -590,13 +590,11 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='trivia'
 PACKAGE_TARNAME='trivia'
-PACKAGE_VERSION='<1.0.0>'
-PACKAGE_STRING='trivia <1.0.0>'
+PACKAGE_VERSION='1:0'
+PACKAGE_STRING='trivia 1:0'
 PACKAGE_BUGREPORT='http://apps.jcns.fz-juelich.de/frida'
 PACKAGE_URL=''
 
-ac_unique_file="lib/file_ops.cpp"
-ac_unique_file="test/test.cpp"
 # Factoring default headers for most tests.
 ac_includes_default="\
 #include <stdio.h>
@@ -633,10 +631,12 @@ ac_includes_default="\
 # include <unistd.h>
 #endif"
 
+ac_unique_file="lib/file_ops.cpp"
 ac_subst_vars='am__EXEEXT_FALSE
 am__EXEEXT_TRUE
 LTLIBOBJS
 LIBOBJS
+AM_CXXFLAGS
 CXXCPP
 am__fastdepCXX_FALSE
 am__fastdepCXX_TRUE
@@ -691,7 +691,6 @@ build_vendor
 build_cpu
 build
 LIBTOOL
-AM_CXXFLAGS
 am__untar
 am__tar
 AMTAR
@@ -756,8 +755,8 @@ SHELL'
 ac_subst_files=''
 ac_user_opts='
 enable_option_checking
-enable_shared
 enable_static
+enable_shared
 with_pic
 enable_fast_install
 enable_dependency_tracking
@@ -1318,7 +1317,7 @@ if test "$ac_init_help" = "long"; then
   # 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 trivia <1.0.0> to adapt to many kinds of systems.
+\`configure' configures trivia 1:0 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1388,7 +1387,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of trivia <1.0.0>:";;
+     short | recursive ) echo "Configuration of trivia 1:0:";;
    esac
   cat <<\_ACEOF
 
@@ -1396,8 +1395,8 @@ Optional Features:
   --disable-option-checking  ignore unrecognized --enable/--with options
   --disable-FEATURE       do not include FEATURE (same as --enable-FEATURE=no)
   --enable-FEATURE[=ARG]  include FEATURE [ARG=yes]
+  --enable-static[=PKGS]  build static libraries [default=no]
   --enable-shared[=PKGS]  build shared libraries [default=yes]
-  --enable-static[=PKGS]  build static libraries [default=yes]
   --enable-fast-install[=PKGS]
                           optimize for fast installation [default=yes]
   --disable-dependency-tracking  speeds up one-time build
@@ -1492,7 +1491,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-trivia configure <1.0.0>
+trivia configure 1:0
 generated by GNU Autoconf 2.69
 
 Copyright (C) 2012 Free Software Foundation, Inc.
@@ -1982,7 +1981,7 @@ cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by trivia $as_me <1.0.0>, which was
+It was created by trivia $as_me 1:0, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   $ $0 $@
@@ -2331,8 +2330,7 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
 
-
-
+# standard configuration for shared libraries
 ac_aux_dir=
 for ac_dir in build-aux "$srcdir"/build-aux; do
   if test -f "$ac_dir/install-sh"; then
@@ -2364,7 +2362,6 @@ ac_configure="$SHELL $ac_aux_dir/configure"  # Please don't use this var.
 
 
 
-
 am__api_version='1.11'
 
 # Find a good install program.  We prefer a C program (faster),
@@ -2803,7 +2800,7 @@ fi
 
 # Define the identity of the package.
  PACKAGE='trivia'
- VERSION='<1.0.0>'
+ VERSION='1:0'
 
 
 cat >>confdefs.h <<_ACEOF
@@ -2842,13 +2839,7 @@ am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'
 
 
 
-
-AM_CXXFLAGS="-pedantic -Wall"
-
-
-ac_config_headers="$ac_config_headers config.h"
-
-
+ # don't insert GNU blala files
 case `pwd` in
   *\ * | *\	*)
     { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Libtool does not cope well with whitespace in \`pwd\`" >&5
@@ -7404,36 +7395,27 @@ done
 
 
 # Set options
-
-
-
-        enable_dlopen=no
-
-
-  enable_win32_dll=no
-
-
-            # Check whether --enable-shared was given.
-if test "${enable_shared+set}" = set; then :
-  enableval=$enable_shared; p=${PACKAGE-default}
+# Check whether --enable-static was given.
+if test "${enable_static+set}" = set; then :
+  enableval=$enable_static; p=${PACKAGE-default}
     case $enableval in
-    yes) enable_shared=yes ;;
-    no) enable_shared=no ;;
+    yes) enable_static=yes ;;
+    no) enable_static=no ;;
     *)
-      enable_shared=no
+     enable_static=no
       # Look at the argument we got.  We use all the common list separators.
       lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
       for pkg in $enableval; do
 	IFS="$lt_save_ifs"
 	if test "X$pkg" = "X$p"; then
-	  enable_shared=yes
+	  enable_static=yes
 	fi
       done
       IFS="$lt_save_ifs"
       ;;
     esac
 else
-  enable_shared=yes
+  enable_static=no
 fi
 
 
@@ -7444,27 +7426,34 @@ fi
 
 
 
-  # Check whether --enable-static was given.
-if test "${enable_static+set}" = set; then :
-  enableval=$enable_static; p=${PACKAGE-default}
+
+        enable_dlopen=no
+
+
+  enable_win32_dll=no
+
+
+            # Check whether --enable-shared was given.
+if test "${enable_shared+set}" = set; then :
+  enableval=$enable_shared; p=${PACKAGE-default}
     case $enableval in
-    yes) enable_static=yes ;;
-    no) enable_static=no ;;
+    yes) enable_shared=yes ;;
+    no) enable_shared=no ;;
     *)
-     enable_static=no
+      enable_shared=no
       # Look at the argument we got.  We use all the common list separators.
       lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
       for pkg in $enableval; do
 	IFS="$lt_save_ifs"
 	if test "X$pkg" = "X$p"; then
-	  enable_static=yes
+	  enable_shared=yes
 	fi
       done
       IFS="$lt_save_ifs"
       ;;
     esac
 else
-  enable_static=yes
+  enable_shared=yes
 fi
 
 
@@ -7476,6 +7465,7 @@ fi
 
 
 
+
 # Check whether --with-pic was given.
 if test "${with_pic+set}" = set; then :
   withval=$with_pic; lt_p=${PACKAGE-default}
@@ -11413,7 +11403,6 @@ CC="$lt_save_CC"
 
 
 
-
 ac_ext=cpp
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -14999,6 +14988,127 @@ ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
+AM_CXXFLAGS="-pedantic -Wall"
+
+ac_config_headers="$ac_config_headers config.h"
+ # to avoid endless -D options
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ANSI C header files" >&5
+$as_echo_n "checking for ANSI C header files... " >&6; }
+if ${ac_cv_header_stdc+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <float.h>
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_header_stdc=yes
+else
+  ac_cv_header_stdc=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+if test $ac_cv_header_stdc = yes; then
+  # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <string.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "memchr" >/dev/null 2>&1; then :
+
+else
+  ac_cv_header_stdc=no
+fi
+rm -f conftest*
+
+fi
+
+if test $ac_cv_header_stdc = yes; then
+  # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdlib.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "free" >/dev/null 2>&1; then :
+
+else
+  ac_cv_header_stdc=no
+fi
+rm -f conftest*
+
+fi
+
+if test $ac_cv_header_stdc = yes; then
+  # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi.
+  if test "$cross_compiling" = yes; then :
+  :
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <ctype.h>
+#include <stdlib.h>
+#if ((' ' & 0x0FF) == 0x020)
+# define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
+# define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
+#else
+# define ISLOWER(c) \
+		   (('a' <= (c) && (c) <= 'i') \
+		     || ('j' <= (c) && (c) <= 'r') \
+		     || ('s' <= (c) && (c) <= 'z'))
+# define TOUPPER(c) (ISLOWER(c) ? ((c) | 0x40) : (c))
+#endif
+
+#define XOR(e, f) (((e) && !(f)) || (!(e) && (f)))
+int
+main ()
+{
+  int i;
+  for (i = 0; i < 256; i++)
+    if (XOR (islower (i), ISLOWER (i))
+	|| toupper (i) != TOUPPER (i))
+      return 2;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"; then :
+
+else
+  ac_cv_header_stdc=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_header_stdc" >&5
+$as_echo "$ac_cv_header_stdc" >&6; }
+if test $ac_cv_header_stdc = yes; then
+
+$as_echo "#define STDC_HEADERS 1" >>confdefs.h
+
+fi
+
+
+# consistency check: is source code present?
+
+
+# dependency checks
 for ac_header in sys/time.h
 do :
   ac_fn_c_check_header_mongrel "$LINENO" "sys/time.h" "ac_cv_header_sys_time_h" "$ac_includes_default"
@@ -15217,119 +15327,8 @@ else
   as_fn_error $? "libgsl not found or out of sync" "$LINENO" 5
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ANSI C header files" >&5
-$as_echo_n "checking for ANSI C header files... " >&6; }
-if ${ac_cv_header_stdc+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <stdlib.h>
-#include <stdarg.h>
-#include <string.h>
-#include <float.h>
-
-int
-main ()
-{
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-  ac_cv_header_stdc=yes
-else
-  ac_cv_header_stdc=no
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-
-if test $ac_cv_header_stdc = yes; then
-  # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <string.h>
-
-_ACEOF
-if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
-  $EGREP "memchr" >/dev/null 2>&1; then :
-
-else
-  ac_cv_header_stdc=no
-fi
-rm -f conftest*
-
-fi
-
-if test $ac_cv_header_stdc = yes; then
-  # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <stdlib.h>
-
-_ACEOF
-if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
-  $EGREP "free" >/dev/null 2>&1; then :
-
-else
-  ac_cv_header_stdc=no
-fi
-rm -f conftest*
-
-fi
-
-if test $ac_cv_header_stdc = yes; then
-  # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi.
-  if test "$cross_compiling" = yes; then :
-  :
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <ctype.h>
-#include <stdlib.h>
-#if ((' ' & 0x0FF) == 0x020)
-# define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
-# define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
-#else
-# define ISLOWER(c) \
-		   (('a' <= (c) && (c) <= 'i') \
-		     || ('j' <= (c) && (c) <= 'r') \
-		     || ('s' <= (c) && (c) <= 'z'))
-# define TOUPPER(c) (ISLOWER(c) ? ((c) | 0x40) : (c))
-#endif
-
-#define XOR(e, f) (((e) && !(f)) || (!(e) && (f)))
-int
-main ()
-{
-  int i;
-  for (i = 0; i < 256; i++)
-    if (XOR (islower (i), ISLOWER (i))
-	|| toupper (i) != TOUPPER (i))
-      return 2;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
-
-else
-  ac_cv_header_stdc=no
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
-fi
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_header_stdc" >&5
-$as_echo "$ac_cv_header_stdc" >&6; }
-if test $ac_cv_header_stdc = yes; then
-
-$as_echo "#define STDC_HEADERS 1" >>confdefs.h
-
-fi
-
 
+# make these Makefiles
 ac_config_files="$ac_config_files Makefile lib/Makefile test/Makefile"
 
 cat >confcache <<\_ACEOF
@@ -15858,7 +15857,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by trivia $as_me <1.0.0>, which was
+This file was extended by trivia $as_me 1:0, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -15924,7 +15923,7 @@ _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
 ac_cs_version="\\
-trivia config.status <1.0.0>
+trivia config.status 1:0
 configured by $0, generated by GNU Autoconf 2.69,
   with options \\"\$ac_cs_config\\"
 
@@ -16055,8 +16054,8 @@ double_quote_subst='$double_quote_subst'
 delay_variable_subst='$delay_variable_subst'
 macro_version='`$ECHO "$macro_version" | $SED "$delay_single_quote_subst"`'
 macro_revision='`$ECHO "$macro_revision" | $SED "$delay_single_quote_subst"`'
-enable_shared='`$ECHO "$enable_shared" | $SED "$delay_single_quote_subst"`'
 enable_static='`$ECHO "$enable_static" | $SED "$delay_single_quote_subst"`'
+enable_shared='`$ECHO "$enable_shared" | $SED "$delay_single_quote_subst"`'
 pic_mode='`$ECHO "$pic_mode" | $SED "$delay_single_quote_subst"`'
 enable_fast_install='`$ECHO "$enable_fast_install" | $SED "$delay_single_quote_subst"`'
 SHELL='`$ECHO "$SHELL" | $SED "$delay_single_quote_subst"`'
@@ -16428,9 +16427,9 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 for ac_config_target in $ac_config_targets
 do
   case $ac_config_target in
-    "config.h") CONFIG_HEADERS="$CONFIG_HEADERS config.h" ;;
     "depfiles") CONFIG_COMMANDS="$CONFIG_COMMANDS depfiles" ;;
     "libtool") CONFIG_COMMANDS="$CONFIG_COMMANDS libtool" ;;
+    "config.h") CONFIG_HEADERS="$CONFIG_HEADERS config.h" ;;
     "Makefile") CONFIG_FILES="$CONFIG_FILES Makefile" ;;
     "lib/Makefile") CONFIG_FILES="$CONFIG_FILES lib/Makefile" ;;
     "test/Makefile") CONFIG_FILES="$CONFIG_FILES test/Makefile" ;;
@@ -17182,12 +17181,12 @@ available_tags="CXX "
 macro_version=$macro_version
 macro_revision=$macro_revision
 
-# Whether or not to build shared libraries.
-build_libtool_libs=$enable_shared
-
 # Whether or not to build static libraries.
 build_old_libs=$enable_static
 
+# Whether or not to build shared libraries.
+build_libtool_libs=$enable_shared
+
 # What type of objects to build.
 pic_mode=$pic_mode
 
diff --git a/configure.ac b/configure.ac
index 846fd96e33264b86d0882cdf48c6109179f1846f..34e0b31354b89a36579bacbad6dde1f30ccd3f2a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -4,23 +4,24 @@
 ##  (C) Joachim Wuttke 2012-                                                 ##
 ###############################################################################
 
-AC_INIT([trivia], [<1.0.0>], [http://apps.jcns.fz-juelich.de/frida])
-
-AC_PREREQ(2.65)
+AC_INIT([trivia], [1:0], [http://apps.jcns.fz-juelich.de/frida])
 
+# standard configuration for shared libraries
 AC_CONFIG_AUX_DIR([build-aux])
-AC_CONFIG_SRCDIR([lib/file_ops.cpp])
-AC_CONFIG_SRCDIR([test/test.cpp])
 AC_CONFIG_MACRO_DIR([m4])
-AM_INIT_AUTOMAKE([foreign])
-AC_SUBST(AM_CXXFLAGS,"-pedantic -Wall")
 
-AC_CONFIG_HEADERS([config.h])
-
-LT_INIT
-AC_PROG_LIBTOOL
+AM_INIT_AUTOMAKE([foreign]) # don't insert GNU blala files
+LT_INIT([disable-static])
 
 AC_PROG_CXX
+AC_SUBST(AM_CXXFLAGS,"-pedantic -Wall")
+AC_CONFIG_HEADERS([config.h]) # to avoid endless -D options
+AC_HEADER_STDC
+
+# consistency check: is source code present?
+AC_CONFIG_SRCDIR([lib/file_ops.cpp], [test/test.cpp])
+
+# dependency checks
 AC_CHECK_HEADERS([sys/time.h], 	   ,AC_MSG_ERROR([Cannot find sys/time.h.]))
 AC_CHECK_HEADERS([math.h],   	   ,AC_MSG_ERROR([Cannot find math.h.]))
 AC_CHECK_HEADERS([gsl/gsl_rng.h gsl/gsl_randist.h gsl/gsl_integration.h],,
@@ -31,7 +32,7 @@ AC_SEARCH_LIBS([cblas_dgemm], [gslcblas],,
 			 [AC_MSG_ERROR(libgslcblas not found or out of sync)])
 AC_SEARCH_LIBS([gsl_blas_dgemm], [gsl],,
 		    [AC_MSG_ERROR(libgsl not found or out of sync)])
-AC_HEADER_STDC
 
+# make these Makefiles
 AC_CONFIG_FILES([Makefile lib/Makefile test/Makefile])
 AC_OUTPUT