Possible fix for Perl failing with ../lib/auto/POSIX/POSIX.so: Undefined symbol "__flt_rounds" on ARM

[Tim Kientzle]

On Jun 5, 2012, at 8:09 AM, Jan Sieka wrote:

> Hello Ian!
> 
> I tried recently to compile and run Perl 5.12 on ARM (SheevaPlug) using
> HEAD from 22.05.2012 and got the following error while trying to run:
> /usr/ports/lang/perl5.12 # make test
> [...]
> ../lib/auto/POSIX/POSIX.so: Undefined symbol "__flt_rounds
> [...]
> 
> After investigating the issue it appeared that __flt_rounds symbol is
> not exported by libc. Applying the following patch, recompilling world
> and Perl fixed the problem and allowed to use Perl on SheevaPlug:
> 
> diff --git a/lib/libc/arm/Symbol.map b/lib/libc/arm/Symbol.map
> index e8c7f1d..8cdcdaf 100644
> --- a/lib/libc/arm/Symbol.map
> +++ b/lib/libc/arm/Symbol.map
> @@ -70,6 +70,7 @@ FBSDprivate_1.0 {
>        __divdf3;
>        __floatsisf;
>        __floatsidf;
> +       __flt_rounds;
>        __fixsfsi;
>        __fixdfsi;
>        __fixunssfsi;
> 
> Can you comment whether this is a correct solution?

Great!  I had the same problem compiling Python last
week and had planned to track it down.

I just committed this to -CURRENT and will also
merge it to the armv6 tree.

Tim