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How to set to "ALT_LEGACY_INTERRUPT_API_PRESENT"

Altera_Forum
Honored Contributor II
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hello, 

 

In Nios II Software Developer’s Handbook (January 2014) P8-11, 

I found following information. 

 

When the SBT selects the interrupt API, it defines one of the following symbols in  

system.h, to identify which interrupt API is available: 

■ ALT_ENHANCED_INTERRUPT_API_PRESENT 

—Defined if the enhanced API is implemented  

■ ALT_LEGACY_INTERRUPT_API_PRESENT 

—Defined if the legacy API is implemented  

 

Does it mean to edit system.h directory? 

 

I confirmed that edited system.h works correctly. 

But in this method, I need edit every time after generating BSP. 

Is there more smart way such as setting GUI switch or other permanent FLAG. 

 

Thank you.
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