Compiler Reference Guide

SIMULINK
Dynamic System Simulation for MATLAB


Why Use the Target Language Compiler?
If you simply need to produce ANSI C code from a Simulink model, you do no
need to use the Target Language Compiler. If you need to customize the outpu
of Real-Time Workshop, the Target Language Compiler is the mechanism tha
you would use. Some uses of the Target Language Compiler are:
• You need to change the way code is generated for a particular Simulink 
block.
• You need to inline S-functions in your model.
• You need to modify the way code is generated in a global sense.
• You need to perform a large scale customization of the generated code.
For example, you need to output the code in a language other than C.
To produce customized output using the Target Language Compiler, you need
to understand the structure of the  model.rtw file and how to modify target file
to produce the desired output. This chapter first introduces the  model.rtw fil
and then describes the target language directives and their associated 
constructs. You will use the TLC directives and constructs to modify existing
target files or create new ones from scratch, depending on your needs. Chapte
3 explains the details of writing target files.