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I google this problem and find your suggestion in this thread( http://lists.arm.linux.org.uk/pipermail/linux-arm-toolchain/2005-September/000272.html ).
In path3, I rebuilt my toolchain(gcc-3.4.4-glibc-2.3.5) with the gcc-3.4.3-arm-softvfp.patch.bz2 and try to use VFP instead of FPA, but I get following error: Error: selected processor does not support `sfmea f4,4,[r0]!' make[2]: *** [/opt/crosstool-0.42/build/arm-xscale-linux-gnu/gcc-3.4.4-glibc-2.3.5/build-glibc/setjmp/setjmp.o] Error 1 make[2]: Leaving directory `/opt/crosstool-0.42/build/arm-xscale-linux-gnu/gcc-3.4.4-glibc-2.3.5 /glibc-2.3.5/setjmp' make[1]: *** [setjmp/subdir_lib] Error 2 make[1]: Leaving directory `/opt/crosstool-0.42/build/arm-xscale-linux-gnu/gcc-3.4.4-glibc-2.3.5/glibc-2.3.5' make: *** [lib] Error 2
I glance through binutils-2.15/gas/config/tc-arm.c, and seems the flag "-mfpu=softvfp" is wrong...(because softvfp result FPU_VFP_EXT_NONE, not FPU_FPA_EXT_V2) Anything I miss?
In path5, I'm very unclear about hacking the gcc spec files. Could you please share with me some URLs or howto doc?
Thanks in advance. Best Regards
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