[Bug bootstrap/41529] LTO configuration should detect if the target is ELF

["joseph at codesourcery dot com" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #17 from joseph at codesourcery dot com  2010-01-02 15:04 -------
Subject: Re:  LTO configuration should detect if the
 target is ELF

On Sat, 2 Jan 2010, rguenth at gcc dot gnu dot org wrote:

> Fixed.  The way to support LTO on non-ELF targets is to wrap all LTO sections
> in an ELF container that is wrapped in a native section.  We then have to
> have code to open a native object format section and direct libelf to parse
> that section content.

I don't really see the point of the ELF container if you also have code to 
parse a native object format.  Either add a separate COFF etc. (or 
BFD-using if you so wish) implementation of the set of interfaces that 
lto-elf.c provides, using hooks (or proper C++ classes) to select which 
implementation is used, or switch the targets to use ELF completely with a 
postlinker converting to executables in another format (like on 
arm-symbianelf).  The former (lto-coff.c, lto-macho.c etc. or lto-bfd.c) 
should be a lot less work (the latter requires an ABI to define how all 
the features of the other object format are represented in ELF).


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41529