"Missing stdlib.h" Installing Orange on Steam Deck

Hello, I’m trying to install Orange on my steam deck, hovever i can’t create the package. I followed the steps to get the prerequisites, and then i try to make a package i get this error.

I’ve installed base-devel, gcc, clang and my /usr/local/include folder is empty, hovever the file is in /usr/include/c++/11.1.0 along with other libraries. Can anyone instruct me on the next steps to install Orange?