[lto][patch] Add a program to read IL symbol tables

[Joseph S. Myers]

On Wed, 20 Aug 2008, Rafael Espindola wrote:

> The attached patch adds a simple program for reading the symbol table
> generated by -flto. It will evolve into the liker plugin.
> 
> 
> 2008-08-20  Rafael Espindola  <espindola@google.com>
> 
> 	* Makefile.def (target_modules): Add lto-plugin.

I do not understand why you think this should be a target rather than a 
host module.  LTO makes perfect sense for a cross compiler - the compiler, 
linker and presumably plug-in run on the host, while the target may be 
bare-metal with no OS and incapable of running any of them.

The plug-in should also share the same logic for finding libelf that 
gcc/configure.ac has - allowing for possible different names for the 
libelf header, and, should a --with-libelf option be added in future as 
per <http://gcc.gnu.org/ml/gcc/2007-09/msg00117.html>, honouring that.  
Thus I recommend putting that logic in a shared macro in config/, and 
making sure the C sources allow for the different header names.

-- 
Joseph S. Myers
joseph@codesourcery.com