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authorRichard Purdie <richard.purdie@linuxfoundation.org>2021-05-09 16:53:07 +0100
committerRichard Purdie <richard.purdie@linuxfoundation.org>2021-05-11 11:53:23 +0100
commit51f51310d6d5cced2b55bf27dbb9a5717740a206 (patch)
tree569081b908be07d84fbc97e3bcd12a6ddc68d8b0 /meta/recipes-support/libjitterentropy
parent3670be602f2ace24dc49e196407efec577164050 (diff)
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ovmf: Improve reproducibility by enabling prefix mappingHEADmaster
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. Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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