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UEFI: Difference between revisions
→Development environment
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[[EDK2]] is a large and complex, yet feature filled environment with its own build system. It can be configured to use GCC, LLVM, MinGW, Microsoft Visual C++, etc. as a cross-compiler. Not only can it be used to compile UEFI applications, but it can also be used to compile UEFI firmware to be flashed to a BIOS ROM.
[[GNU-EFI]] is a set of libraries and headers for compiling UEFI applications with a system's native GCC (does not work with LLVM CLang). It can't be used to compile UEFI firmware. Since it's just a couple of libraries against which a UEFI application can be linked, it is much easier to use than TianoCore ( EDK2 ).
[[POSIX-UEFI]] is very similar to GNU-EFI, but it is distributed mainly as a source, not as a binary library, has ANSI C like names and works with GCC as well as LLVM CLang. It's shipped with a Makefile that sets up the compiler flags for you.
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