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Ok, when im coming to compile my kernel the one i use (djgpp) has its own headers. But i want to use my own OS headers (for obvious reasons)

So how do you make it so that in C when compiling on djgpp that your headers are used (stdio, string etc.) not the one the compilers use.

Thanks in advance.

Look into the following flags:

-ffreestanding
-nostdlib
-fno-builtin
-fno-rtti
-fno-exceptions

These or a combination of them should do the trick.

-m