On 25.04.2022 12:46, Jan Beulich wrote: > With debug info retained, xen.efi can be quite large. Unlike for xen.gz > there's no intermediate step (mkelf32 there) involved which would strip > debug info kind of as a side effect. While the installing of xen.efi on > the EFI partition is an optional step (intended to be a courtesy to the > developer), adjust it also for the purpose of documenting what distros > would be expected to do during boot loader configuration (which is what > would normally put xen.efi into the EFI partition). > > Model the control over stripping after Linux'es module installation, > except that the stripped executable is constructed in the build area > instead of in the destination location. This is to conserve on space > used there - EFI partitions tend to be only a few hundred Mb in size. > > Signed-off-by: Jan Beulich <[email protected]> > --- > RFC: GNU strip 2.38 appears to have issues when acting on a PE binary: > - the new file positions of the sections do not respect the file > alignment specified by the header (a resulting looks to work on > one EFI implementation where I did actually try it, but I don't > think we can rely on that), > - file name symbols are also stripped; while there is a separate > --keep-file-symbols option (which I would have thought to be on > by default anyway), its use makes no difference.
Update to these items: The first one turned out to be an issue with a not-yet-upstream patch that I've been carrying for a long time. I've fixed that up, and will submit that patch (perhaps together with further ones) in due course. Apart from that the list of remarks now is - file name symbols are also stripped; while there is a separate --keep-file-symbols option (which I would have thought to be on by default anyway), its use so far makes no difference, - the string table grows in size, when one would expect it to shrink, - linker version is changed in and timestamp zapped from the header. Locally I have draft patches for all of these issues, but this means stripping won't work overly well until at least 2.39. Jan
