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8dcb68f477
We want to pass ${DEBUG_PREFIX_MAP} to gcc commands and also pass in
--debug-prefix-map to nasm (we carry a patch to nasm for this). The
tools definitions are built by ovmf-native so we need to pass this in
at target build time when we know the right values.
By using determininistc file paths in the ovmf build, it removes the
opportunitity for gcc/ld to change the output binaries due to path
lengths overflowing section sizes and causing small changes in the
binary output.
This also means that if builds have reproducibility issues in future, it
becomes much easier to compare intermediate build artefacts.
(From OE-Core rev: 51f51310d6d5cced2b55bf27dbb9a5717740a206)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
QEMU Emulation Targets ====================== To simplify development, the build system supports building images to work with the QEMU emulator in system emulation mode. Several architectures are currently supported in 32 and 64 bit variants: * ARM (qemuarm + qemuarm64) * x86 (qemux86 + qemux86-64) * PowerPC (qemuppc only) * MIPS (qemumips + qemumips64) Use of the QEMU images is covered in the Yocto Project Reference Manual. The appropriate MACHINE variable value corresponding to the target is given in brackets.