On 13 August 2012 17:25, Peter <heronp...@gmail.com> wrote: > I would like to run Ubuntu 12.04 on a A9 Cortex-MP/armv7-a > development system that has *no FPU* hardware floating point unit. > > Does this mean the entire toolchain needs to be recompiled?
Ubuntu 12.04 assumes VFP is present. You might be able to recompile the whole thing with a toolchain configured for softfloat, but that is definitely not a supported thing from the Ubuntu side. You can run regular Ubuntu userspace using kernel VFP emulation, but that will be _really_ slow. > Could you please shed light on appropriate settings > (toolchain and/or kernel) soft FPU emulation related options > for armv7-a without a FPU? To build a softfloat gcc, pass --with-float=soft to configure. Build the kernel as usual, nothing special is required there. -- Mans Rullgard / mru _______________________________________________ linaro-toolchain mailing list linaro-toolchain@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-toolchain
