[patch]: Discard some sections for pe and pep

[JonY]

On 11/22/2009 04:35, Kai Tietz wrote:
> 2009/11/21 Dave Korn<dave.korn.cygwin@googlemail.com>:
>> Kai Tietz wrote:
>>> So here is the updated version making section .gnu_debuglink a no load section.
>>> Lto for x86_64-pc-mingw32, i686-pc-mingw32, and i686-pc-cygwin32
>>> tested so far, that binutils parts about pe-coff are working.
>>
>>   OK, once you've verified that a split-debug exe still works fine in gdb
>> automatically (i.e. without needing a 'file' command or otherwise separately
>> loading the splitted-out debug info) even with NOLOAD on the .gnu_debuglink
>> section, and of course with an updated ChangeLog.
>>
>>> (for building libelf on cygwin, the elf.h has to be moved temporary
>>> into elf_old.h, before building libelf, afterwards it can be renamed
>>> to old name)
>>
>>   Right, so from JonY's description I'm guessing the ELF formatted data is all
>> just quietly encapsulated in one of these PE sections.  I currently owe the
>> Cygwin distro a respin of the current stable compiler build for 1.5 and 1.7,
>> but after that's shipping I'd like to try an experimental release of 4.5.0,
>> with lto and graphite and everything enabled.  Thanks for the advice, both of you.
>>
>>     cheers,
>>       DaveK
>>
>>
>
> Ok, I tested it and gdb doesn't like the NOLOAD, so I removed the
> .gnu_debuglink complete from my patch.
> I noticed that in objcopy there is some issue about long section names.
> The option --add-gnu-debuglink seems to be broken as it shortens
> automatically the section name to 8 characters, Dave rings here a
> bell? Can be related to the way I initial did the split
>
>         objcopy --only-keep-debug $f ${strippath}/$d/$s.dbg
>          objcopy --strip-debug $f
>          objcopy --add-gnu-debuglink=${strippath}/$d/$s.dbg $f
>
> $f = is the executable with debug information
> $s = is the base name of executable
>
> Is by this something wrong? But well, this is a different issue.
>
> Modified changelog is
>
> 2009-11-21  Kai Tietz<kai.tietz@onevision.com>
>
> 	* scripttempl/pe.sc: (.note.GNU-stack): Mark as discardable.
> 	(.gnu.lto_*): Likewise.
> 	* scripttempl/pep.sc: (.note.GNU-stack): Mark as discardable.
> 	(.gnu.lto_*): Likewise.
>
> Tested for i686-pc-cygwin, i686-pc-mingw32, and x86_64-pc-mingw32. Ok for apply.
>
> Cheers,
> Kai

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