Re: [arm-gnu] Possible bug in g++ frontend (G++ Lite arm-2009q1-203)

[Daniel Jacobowitz <dan@xxxxxxxxxxxxxxxx>]

On Tue, Oct 13, 2009 at 11:28:07AM +0300, Juha Kallioinen wrote:
> Hello,
> 
> I've downloaded this version of the compiler:
> arm-2009q1-203-arm-none-linux-gnueabi-i686-pc-linux-gnu.tar.bz2
> 
> I'm seeing different behavior with gcc and g++ when using a specs
> file. It looks like if I define the option -mfpu=vfp in the specs
> file, g++ cannot override it from the command line.

Judging from your specs file, you weren't passing -mfpu=vfp in your
cc1 spec at all; I don't see any evidence of different behavior
between the two.

In any case, giving GCC multiple values for the same option has always
been problematic.  I recommend you use %{!...} instead, so you only
provide a -mfpu if none was on the command line.  There's plenty of
examples of this in existing specs.

-- 
Daniel Jacobowitz
CodeSourcery