[Bug gas/19109] Cannot configure default flag_compress_debug

[nickc at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=19109

--- Comment #26 from Nick Clifton <nickc at redhat dot com> ---
Hi H.J.

> A patch to add
> 
>   --enable-compressed-debug-sections={all,gas,gold,ld}                      
>   Enable compressed debug sections for gas, gold or ld
>   by default

Before the patch goes in I would like to check a few things:

  * If compression is enabled for gas but not ld for example, 
    does this mean that the linker will uncompress compressed
    debug sections when it writes them out ?  Or rather, is 
    that what configuring with --enable-compressed-debug-sections=gas 
    implies ?

  * What happens if the linker is given some input files containing
    compressed debug sections and some input files not containing 
    compressed debug sections ?  Is the output always compressed ?

  * What advantage is gained by compressing debug sections, as opposed
    to splitting out the debug information and the compressing the whole
    debug file ?

Cheers
  Nick

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