On Monday, 13 August 2012 at 17:41:24 UTC, Johannes Pfau wrote:
Am Mon, 13 Aug 2012 11:27:39 +0200
schrieb "Stefan Frijters" <sfrijt...@gmail.com>:
The relevant errors seem to be
conftest.c:1:0: sorry, unimplemented: -mfloat-abi=hard and VFP
This is something that is explicitly set in the configure
command above to match what I saw in gcc -v. If I remove this,
will this remove the advantage of having the hard floats
available at all in Raspbian (unlike Squeeze)? Or will this be
implicit anyway (and thus cause compilation to fail again)
through the way the base gcc is compiled?
Not sure if it's implicit, but if your new compiler doesn't
match the
system ABI strange things will happen (especially related to
floating
point, using math functions from libc wouldn't work, ...)
Looks like gcc usually doesn't support -mfloat-abi=hard and
--with-fpu=vfp, but the raspbian folks patched their gcc
sources to
support that. I'm not sure why they haven patched the gcc-source
package though.
You probably have to ask the raspbian folks where you can get
that
patch.
You could also try to use the gcc sources from the gcc package
(apt-get source gcc), but those sources are already patched for
gdc
support, so the ./update-gcc.sh script could fail.
Just a small update in this - I did as you suggested and went
over the harass the folks at the Raspbian forum. It turns out
that there's actually an ancient version available as a package,
but it's gdc-4.4 and doesn't even support D2, so that doesn't
help me any at the moment. Will still to try and get the
nitty-gritty details on their patching strategy - it looked like
their patches were in fact in the sources package as well.
