My code can't detect initsharedfunc()

[Licuatronix]

I know this is old but i have a problem

i want to build https://github.com/44670/ntr_overlay_samples this code who uses libntrplg

But for some reason in main.h i get a error saying initsharedfunc() is a inplicit call if i remove that line the script builds but crashs my console Im doing someting wrong?