flex input and malloc

[jojo]

Hello NG,
because there is no NG for flex i post it here.
I want to make a scanner for my microcontroller who is getting messages (not 
longer than 160 chars; example: "var1=34.34;var2="test";var3=5"). Those 
messages are stored in a buffer (char buff[160]). The mc should scan and react 
to this messages in doing something and post a message back. My problem is that 
flex is allocating space on heap - well, that works on the controller but I 
didn´t want to do because of less space and all problems that can occur with 
that (memory leaks etc) . Is there a way to use static memory (array)? Perhaps 
there are other versions of lex who supports this? 

Thanks,
Joachim