diff --git a/SConstruct b/SConstruct
index b76e0101e..8434b0a98 100644
--- a/SConstruct
+++ b/SConstruct
@@ -33,7 +33,7 @@ CUSTOPTIONSFILE  = 'custom-options'
 SRCDIR           = 'src'
 BINDIR           = 'bin'
 TESTDIR          = 'tests'
-VERSION          = '3+alpha.01'
+VERSION          = '0.1+pre.01'
 #-----------------------------------Configuration
 
 # NOTE: scons -h for help.
@@ -68,6 +68,7 @@ def setupBasicEnvironment():
     RegisterPrecompiledHeader_Builder(env)
     handleNoBugSwitches(env)
     
+    env.Append(CPPDEFINES = '_GNU_SOURCE')
     appendCppDefine(env,'DEBUG','DEBUG', 'NDEBUG')
     appendCppDefine(env,'OPENGL','USE_OPENGL')
     appendVal(env,'ARCHFLAGS', 'CCFLAGS')   # for both C and C++
diff --git a/admin/vgsuppression.c b/admin/vgsuppression.c
index 0e1f41fca..cad026e52 100644
--- a/admin/vgsuppression.c
+++ b/admin/vgsuppression.c
@@ -18,7 +18,6 @@
   along with this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */
-#define _GNU_SOURCE
 
 /*
   just place any problematic calls where valgrind whines about in main (with comments please)
diff --git a/tests/00test.tests b/tests/00test.tests
index 60b4b26d1..d1205b8c1 100644
--- a/tests/00test.tests
+++ b/tests/00test.tests
@@ -22,3 +22,4 @@ END
 
 PLANNED "this may never happen"
 END
+
diff --git a/tests/SConscript b/tests/SConscript
index 44d34e047..5a7c0145d 100644
--- a/tests/SConscript
+++ b/tests/SConscript
@@ -9,6 +9,10 @@ from Buildhelper import globRootdirs
 
 Import('env','artifacts','core')
 
+# temp fix to add test.h  -- wouldn't it be better to put this header be into src/lib ?  
+env = env.Clone()
+env.Append(CPPPATH='#/.')  # add Rootdir to Includepath, so test/test.h is found
+# temp fix------------- 
 
 def testExecutable(env,tree, exeName=None, obj=None):
     """ declare all targets needed to create a standalone
@@ -52,7 +56,7 @@ def treatPluginTestcase(env):
 moduledirs = globRootdirs('*')
 
 # but have to treat some subdirs individually.
-specials = ['plugin','locking','library']
+specials = ['plugin','locking','library','backend']
 
 
 
diff --git a/tests/test.h b/tests/test.h
new file mode 100644
index 000000000..d25fa0a59
--- /dev/null
+++ b/tests/test.h
@@ -0,0 +1,52 @@
+/*
+  test.h  -  macros for running tests
+
+  Copyright (C)         CinelerraCV
+    2008,               Christian Thaeter <ct@pipapo.org>
+
+  This program is free software; you can redistribute it and/or
+  modify it under the terms of the GNU General Public License as
+  published by the Free Software Foundation; either version 2 of the
+  License, or (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; if not, write to the Free Software
+  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#ifndef TEST_H
+#define TEST_H
+
+#include <nobug.h>
+
+#include "lib/error.h"
+
+LUMIERA_ERROR_DEFINE (TEST, "test error");
+
+#define TESTS_BEGIN                             \
+int                                             \
+main (int argc, char** argv)                    \
+{                                               \
+  NOBUG_INIT;                                   \
+                                                \
+  if (argc == 1)                                \
+    return 1;
+
+#define TEST(name) \
+ else if (!strcmp(argv[1], name))
+
+
+#define TESTS_END                               \
+  else                                          \
+    return 1;                                   \
+                                                \
+  return 0;                                     \
+}
+
+
+#endif
diff --git a/tests/test.sh b/tests/test.sh
index 77bac66bf..d919ed073 100755
--- a/tests/test.sh
+++ b/tests/test.sh
@@ -1,7 +1,6 @@
 #!/bin/bash 
 #  Copyright (C)         Lumiera.org
-#    2007,               Christian Thaeter <ct@pipapo.org>
-#                        Hermann Vosseler <Ichthyostega@web.de>
+#    2007 - 2008,        Christian Thaeter <ct@pipapo.org>
 #
 #  This program is free software; you can redistribute it and/or
 #  modify it under the terms of the GNU General Public License as