gdb does not know the platform x86_64-pc-solaris2.10. I made a patch to solve that.
Created attachment 148104 [details] an ebuild that apply the patch Needed to apply the new patch
Created attachment 148105 [details, diff] Patch to gdb to make it recognise x86_64-pc-solaris2.10
cool, I'll add that one (nicely in line with binutils and gcc patches). Did you report this one upstream?
No, because the problem arises because gentoo specifies the host (x86_64...). Launched standalone, gdb detect that solaris 10 on a pc is 64bits. So I think they will not correct that.
weird. Solaris is multilib by default, but the sparcv9 target is in the configure.tgt as well.
Added to the tree, thanks!