Re: [gentoo-embedded] sparcv8 gcc

[Сергей Миронов]

>> http://gcc.gnu.org/onlinedocs/gcc-4.4.0/gcc/SPARC-Options.html#SPARC-Options
>> You'll need to use -mno-fpu on the CFLAGS. And again, the -softfloat-
>> thing on the CHOST is gentoo-specific and only applies to ARM.
>>
>>
>
> Thanks! i'll try it as soon as i can.

Hi.
man gcc says about -mno-fpu in SPARC section that  "... you need to
compile libgcc.a, the library that comes with GCC, with -msoft-float
in order for this to work". So i try that:

$ export CFLAGS="-msoft-float"
$ crossdev sparc-module2-linux-gnu

Unfortunately, binutils fails to build with link-time errors:

../bfd/.libs/libbfd.so: undefined reference to `__floatsidf'
../bfd/.libs/libbfd.so: undefined reference to `__adddf3'
../bfd/.libs/libbfd.so: undefined reference to `__divdf3'

I found, that these functions are gcc floating point implementation.
But binutils should be built before gcc... So i think, that i am
trying to do something wrong again. Could you help?

Note, that without export CFLAGS="-msoft-float", crossdev successfully
builds development tree, but i can't use -mno-fpu in it's CFLAGS (same
errors).

Thanks!
Sergey