Integrating libada branch

[Jim Wilson]

Arnaud Charlet wrote:
> I am trying to integrate the libada branch (to address
> PR ada/6637, PR ada/5911), but I noticed a problem with
> the current files: the directory libada is unconditionally configured
> and maked, even with you use e.g. configure --enable-languages=c

In gcc/ada/config-lang.in add a target_libs line.  The toplevel 
configure.in checks to see if a language is configured, and if not, it 
removes everything in target_libs from the list of subdirectories to be 
configured.  See examples in the other language directories.  See also 
the toplevel configure.in file.

See also the documentation for the config-lang.in file in 
gcc/doc/sourcebuild.texi.
-- 
Jim Wilson, GNU Tools Support, http://www.SpecifixInc.com