[Vala] compile with mysql

[Jean-Noel Rouchon <jnoel sissiou net>]

Hello everybody.
I need some help please :

I try to compile a vala program with "using Mysql"

if I compile like this :
valac -o test test.vala --pkg gtk+-2.0 --pkg mysql
I've got an error.

It's work when I do :
valac -o test test.vala --pkg gtk+-2.0 --pkg mysql -C
then
gcc -o test test.c `pkg-config --cflags --libs glib-2.0 --libs gtk+-2.0` 
-lmysqlclient

Is there a way to do this directly with valac ?

Thank you.

jnoel