2011-08-05  Nicolas Roche  <roche@adacore.com>

	* gcc-interface/Makefile.in: Don't use directly ../xgcc to build shared 
	libgnat. Use rather the value of GCC_FOR_TARGET. Fix issue with         
	canadian cross.
	* gcc-interface/Make-lang.in: Add support for canadian cross setting.

From-SVN: r177462