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  VS Arduino › Visual Micro › General Board › Dynamic_cast compile error -fno-rtti
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Normal Topic Dynamic_cast compile error -fno-rtti (Read 5904 times)
davidbal
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Dynamic_cast compile error -fno-rtti
Feb 16th, 2017 at 11:34am
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I am using this in my code:

NumericMenuItemInt* p_nmi = dynamic_cast<NumericMenuItemInt*>(p_menu_item);

But I get the following compile error:

'dynamic_cast' not permitted with -fno-rtti


How do you enable this in the compiler options?

Regards,

David
  
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Tim@Visual Micro
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Re: Dynamic_cast compile error -fno-rtti
Reply #1 - Feb 16th, 2017 at 4:19pm
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Hi,

Switch on vmicro>compiler>"verbose" and "show build properties" then build and this will show us which tool chain you have installed and what options it has configured.

You can email the output as a .txt file or post here. Email is info[at]visualmicro.com
  
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Tim@Visual Micro
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Re: Dynamic_cast compile error -fno-rtti
Reply #2 - Feb 19th, 2017 at 10:50pm
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By the way which hardware are you using?




  
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davidbal
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Re: Dynamic_cast compile error -fno-rtti
Reply #3 - Feb 21st, 2017 at 1:28pm
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Hopefully you have received the log.

I am using an Arduino Mega.

Regards,

David
  
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Tim@Visual Micro
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Re: Dynamic_cast compile error -fno-rtti
Reply #4 - Feb 21st, 2017 at 1:48pm
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If I recall the more recent Arduino mega defs have this setting so try an older tool chain for Avr in board manager
  
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Tim@Visual Micro
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Re: Dynamic_cast compile error -fno-rtti
Reply #5 - Mar 2nd, 2017 at 2:14pm
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Hi,

This error could have been caused if the latest arduino hardware defs were used with an older avr toool installation. 

The recent version(s) of visual micro were updated to detect and resolve the issue. So if yo upgrade you will find that issue is resolved.

The issue only hit a few users but I thought I would mention it in case it was why you raised this thread.

If using visual studio then update visual micro from the gallery

If using atmel studio update using the next-release link on our downloads page

Thanks
« Last Edit: Mar 2nd, 2017 at 2:15pm by Tim@Visual Micro »  
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