Re: Unknown symbol in rtai_math.ko in rtai-5.0

You missed the aim. 
He just forgot to enable the use of complex functions, at least for what we have seen up to now.  
Maybe he will discover he does not need them eventually, but I do. 
To my knowledge such a support was not in the former RTAI kernel math support.

Paolo.

________________________________________
From: Rtai [[email protected]] on behalf of Alec Ari [[email protected]]
Sent: Friday, February 9, 2018 11:01 PM
To: [email protected]
Subject: Re: [Rtai] Unknown symbol in rtai_math.ko in rtai-5.0

The math issues with RTAI is the main reason I initially forked the tree and re-wrote it all with Jepler's help, as well as a complete overhaul to the build system / autotools. The same issues have been going on for years, I'm just glad that it's all sorted and cleaned up at least on my end. Undefined symbols, compilation errors, without having to worry about using newlib, manually locating libm, or messing with the C library at all for that matter. Paolo, the old code you had before was fine, it just needed to get cleaned up due to changes to GCC, the kernel and glibc as well as forcing SSE and SSE2 with hard floating point. Tailoring for x86 processors without an FPU was a wasted effort as I really don't think anyone is using CPUs that old and should upgrade anyway. The new math code mai
 nlined into RTAI 5 doesn't and never has worked for me either so I don't bother. Having to mess with the C library of the Linux distribution or compile one just for RTAI is a bit absurd, a project s
 houldn't work that way.

Alec Ari
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