In message 378D4198C6A64E4595DC307634CDF3B801B3B292@zicgy-ms00.zi.ziroot.com you wrote:
who've done it before or know how. I'm building my own toolchain using the buildchain script written by Chip Coldwell http://frank.harvard.edu/~coldwell/toolchain/ (gcc-2.4.4, glibc-2.3.5, linux-2.6.10). Unfortunately, I end up with a gcc compiler with a libgcc.a that's compiled to use hardware FP.
This is not a place to discuss "how do I build my own toolchain" problems. There are existing, known to be working toolchains (like the EKLDK), there are working build scripts (like crosstools), etc. Many working options. If you chose to use a non-working one this is off topic here.
Could someone tell me how to rebuild gcc to avoid that problem with u-boot? Is there an elegant way of keeping two versions of gcc (one that uses hardware FP and one that uses software FP) for when I need to build code for the actual board?
Why would you need HW FP for a ARM system? Have you access to an ARM processor with FPU? Which one is this?
Best regards,
Wolfgang Denk