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GCC5 and CLANGDWARF for IA32/X64 use -Os or -Oz as the optimization level, which agressively optimizes for the smallest possible object code. On AARCH64, RISCV64 and ARM, we use -O3 instead, which results in considerable image bloat, to the point where the Raspberry Pi 4 build in edk2-platforms does not even build with -D SECURE_BOOT_ENABLE. So let's align CLANGDWARF across all architectures, and use -Oz throughout. Note that O3 is still used for the linker, which build in LTO mode and therefore performs some code generation as well. This is deliberate: LLD does not support the Os/Oz optimization levels at all, and using Oz for the compile pass is sufficient to reduce the code size substantially. Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
This directory contains the template files for the next generation of the EDK II Build infrastructure. These files will be copied into the WORKSPACE's Conf directory if and only if the target files do not exist. These files may be updated frequently. The XMLSchema directory contains the EDK II Packaging XML definitions. The schema may change in the future. It differs somewhat from the early versions of the XML Schema.