diff --git a/kreate_library_ytest.sh b/kreate_library_ytest.sh
index fddc442..b9f994d 100644
--- a/kreate_library_ytest.sh
+++ b/kreate_library_ytest.sh
@@ -7,7 +7,7 @@ done
 
 if [ "$#" -le 0 ] ; then
   echo "Usage: $0" >&2
-  echo "we can add more option for example '-D DEBUG=1' to have debug print,  or '-g' to gbd" >&2
+  echo "we can add more option for example '-D DEBUG=1' to have debug print of PRINT_DEBUG_ (tools_t macro), notice that PRINT_DEBUG is provide by ytest and can be activate with --debug option on runtime.\n The other compile option is '-g' to have gbd", and so on..>&2
   echo "for example: $0 \"-D DEBUG=1 -g\""
 fi
 
diff --git a/libytest.so b/libytest.so
index 69f974b..5a66247 100644
Binary files a/libytest.so and b/libytest.so differ
diff --git a/test/compile.sh b/test/compile.sh
index 3c09629..a0fda60 100644
--- a/test/compile.sh
+++ b/test/compile.sh
@@ -5,14 +5,14 @@ if [ "$#" -le 0 ] ; then
   echo "for example to compile: is_good.c" >&2
   exit 1
 fi
+
 if [ "$#" -le 1 ] ; then
   echo "Usage: $0 $1" >&2
-  echo "we can add more option for example '-D DEBUG=1' to have debug print,  or '-g' to gbd" >&2
+  echo "we can add more option for example '-D DEBUG=1' to have debug print of PRINT_DEBUG_ (tools_t macro), notice that PRINT_DEBUG is provide by ytest and can be activate with --debug option on runtime.\n The other compile option is '-g' to have gbd", and so on..>&2
   echo "for example: $0 $1 \"-D DEBUG=1 -g\""
 fi
 
 
-
 gcc -o launch_is_good_c $1 -L$PWD/../ $2 -lytest -I../include_ytest/include  
 #gcc -o launch_is_good_c $1 $2 -lytest -I../include_ytest src/permutation_t/permutation_t.o src/set_theoric_t/set_theoric_t.o -I./src