B4R Question line numbers in compile errors

[Arf]

I get a compile error:
C:\Users\arthu\Desktop\B4R\MyProject\Objects\src\b4r_main.cpp:19:10: fatal error: buffer.h: No such file or directory

#include "buffer.h" is line 41 of my B4R file, and the 13th line after the '#if c'. How does the line number in the compilation error relate to the source code?

 

[Erel]

The B4R compiler tries to find the original line number, however it isn't always possible. The error refers to the line number in the generated C++ file.