How to call function from C++ in nasm

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u want to call function from c++ in nasm in this function I declare object from class

What I have tried:

I tried this code in nasm file
extern kmain
and this code in c++ file
extern "c++" kmain ;
but it's don't solve the problem
and always I get this error message
undefined reference to _kmain

Posted 29-Sep-19 1:14am

Member 14160360

Updated 29-Sep-19 2:14am

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Richard MacCutchan · Answer 1 · 2019-09-29T02:14:00

Solution 1

You need to use extern "C", not C++ in order to get the correct external name defined. C++ names include special characters and are not easy to predict.

Posted 29-Sep-19 2:14am

Richard MacCutchan

Comments

Member 14160360 29-Sep-19 11:24am

thanks for reply I tried your solution but it's don't solve the problem and I get same error message

Richard MacCutchan 29-Sep-19 11:36am

Please edit your question and show the code that is causing the problem.

Member 14160360 29-Sep-19 11:55am

I found solution by myself and the wrong thing is I write in nasm file extern _kmain any way thank you again