[Clfs-support] Proper CLFS setup for an ARM Cortex A8

Hector Oron hector.oron at gmail.com
Tue May 10 09:03:08 PDT 2011


2011/5/10 Angel Ivan Castell Rovira <al004140 at gmail.com>:

> Some questions related with that CLFS environ variables:
>     - CLFS_ARM_ARCH: It is armv7-a the proper selection?

>     - CLFS_FLOAT: It is better to use "hard" or "softfp"?
It depends, whether you want to use extensive floating point in an
efficient manner (hard) or you want to be able to run soft/softfp
binaries in your rootfs.
Some notes on hard: < http://wiki.debian.org/ArmHardFloatPort >

>     - CLFS_FPU: There are a lot of features (vfp, vfpv3, neon). What do you
> think it is the best choice?
Depends on your hardware, your platform seems to have neon, that's the
one. Building vfpv3 would make your rootfs more compatible, i.e. able
to run on tegra devices which does not have neon FPU.

> As you can see, there is no Cortex A8. What is the proper Target Processor
> Type I should select here?

It should be Cortex A8, I have not checked uClibc, but that is likely
something uClibc guys will add soon.

Best regards,
 Héctor Orón  -.. . -... .. .- -.   -.. . ...- . .-.. --- .--. . .-.

"Our Sun unleashes tremendous flares expelling hot gas into the Solar
System, which one day will disconnect us."

-- Day DVB-T stop working nicely
Video flare: http://antwrp.gsfc.nasa.gov/apod/ap100510.html

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