Compiling For Debug; Optimization - STMicroelectronics STM32 Application Note

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Compiling for debug

This chapter reviews the various options for debug-friendly compiling solutions.
3.1

Optimization

Compiler are usually configured by default to optimize performance and/or code size. In
most cases, this reduces or even prevents program debugging.
The most common symptoms resulting from code optimization are:
• Problem to set or reach a breakpoint. Some lines are not accessible.
•
Impossibility to evaluate a variable (watch feature).
•
Inconsistency while stepping (what I get, is not what I see).
Therefore, for efficient debugging it is recommended to modify the code optimization option.
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