On Wed, Sep 12, 2012 at 09:59:30AM +0200, Marek Vasut wrote:
Dear Mike Frysinger,
On Tue, Sep 11, 2012 at 3:08 PM, Marek Vasut wrote:
The GCC does not support this on blackfin, disable it.
err, no, you're probably using gcc-4.5.x which didn't support -fstack-usage. that is not specific to Blackfin as gcc didn't add it until 4.6.x.
I actually used gentoo here, so it's really possible there is some crap going on.
$ bfin-unknown-elf-gcc --version bfin-unknown-elf-gcc (crosstool-NG hg+default-ff167977b163) 4.6.3 Copyright (C) 2011 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
why doesn't the cc-option check work ?
I dunno man, probably because it's supported but broken, see (there's lot more to this, I cut it down):
I believe it's a gcc "feature" not a bug. -fstack-usage emits a warning on targets where it's not supported and cc-option doesn't catch that. How about if you make cc-option call -Werror ?