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Up to really now i have used normal gcc installed on my system. I changed because i thought it may be better to use a cross compilers, like the wiki page says. Is it possible to create a good os (i mean one that can run programs and pretty much like linux) and just compile with normal gcc

Yes, it's possible, but it's a bad idea.

We have an entire wiki page on the subject.

Just use a cross-compiler. It's very easy if you follow the instructions on the wiki, and it will save you a lot of trouble to have a toolchain specific to your OS.

Octocontrabass wrote:Yes, it's possible, but it's a bad idea.

I agree. You'll run into strange and unexplainable bugs later (most commonly caused by mixed up host / target headers and such).

Cheers,
bzt

Using a cross compiler provides a clean separation of host and target, as bzt said. Your OS will be full independent of your host, and will be able to become your OS.

Maddie wrote:Just use a cross-compiler. It's very easy if you follow the instructions on the wiki, and it will save you a lot of trouble to have a toolchain specific to your OS.

I have built the cross compiler many times and also used the prebuilt ones. It is actually harder to get working on ubuntu than on arch.

It's not essential to use a cross-compiler. It just makes development easier and less error prone. In fact, it's not essential to use a compiler, or even an assembler. But, in all these cases, you are making life difficult for yourself if you don't choose the right tools.