On Wed, 6 Apr 2022 10:27:40 GMT, Andrew Leonard <aleon...@openjdk.org> wrote:
> This PR fixes the non-deterministic behavior when building on linux with
> different userids or within
> different workspace folders.
> It fixes the following issues:
> - MakeZipReproducible.java used to produce reproducible src.zip removes the
> optional zip "extra" field containing UID/GID.
> - When absolute output paths are not allowed, enable the use of
> -fdebug-prefix-map to ensure debug symbol info does not contain the top level
> workspace folder.
> - For reproducible builds ensure the gcc random symbol name generator is
> seeded using -frandom-seed.
> - For reproducible builds when producing debug symbols use relative object
> paths for library linking to remove absolute MASM object paths.
>
> Signed-off-by: Andrew Leonard <anleo...@redhat.com>
Marked as reviewed by erikj (Reviewer).
make/autoconf/flags-cflags.m4 line 109:
> 107: workspace_root_trailing_slash="${WORKSPACE_ROOT%/}/"
> 108:
> DEBUG_PREFIX_CFLAGS="-fdebug-prefix-map=${workspace_root_trailing_slash}="
> 109: FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [${DEBUG_PREFIX_CFLAGS}],
Ideally capability checks for the compiler should be done separately for the
BUILD and TARGET compiler. If cross compiling, and using different versions of
GCC for the BUILD and TARGET, we may get into trouble. That is certainly a rare
case, but still something to be aware of at least. Not sure if it's worth
trying to fix.
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PR: https://git.openjdk.java.net/jdk/pull/8124
