[RFC] New feature to reuse one multilib among different targets

[Joseph S. Myers]

On Thu, 8 Nov 2012, Terry Guo wrote:

> To convert such statements to data structure used by multilib_raw, I
> refactor codes in genmultilib into two functions combo_to_dir and

The "function" keyword for creating shell functions is not POSIX, and I 
don't know if we ensure that $SHELL is a shell supporting functions.  
(It's documented that CONFIG_SHELL may need to be set to a POSIX shell if 
/bin/sh isn't sufficient, but does that feed through to the value of SHELL 
used to run this script?)

> 2012-11-08  Terry Guo  <terry.guo@arm.com>
> 
> 	* genmultilib (combo_to_dir): New function.
> 	(options_output): New function.
> 	(MULTILIB_REUSE): New argument.
> 	* Makefile.in (s-mlib): Add a new argument MULTILIB_REUSE.
> 	* gcc.c (multilib_reuse): New spec.
> 	(set_multilib_dir): Use multilib_reuse.

Documentation changes need mentioning in ChangeLog entries.

-- 
Joseph S. Myers
joseph@codesourcery.com