Re: Fwd: RTAI 3.9 math module unknown symbols - Ubuntu 12.04

On 07/05/2016 10:07 AM, Laurence TROUVE wrote:
>
> Hi.
>
> FYI, I finally found the solution of the missing symbols on this 
> page : http://mail.rtai.org/pipermail/rtai/2012-December/025250.html
>
> The problem was : when linking rtai_math.ko, there was a lot of warnings :
>
> WARNING: "acos" 
> [/home/bee/Tests_buildroot/buildroot-2016.02/output/build/rtai-4.0.1/base/math/rtai_math.ko] 
> undefined!
>
> WARNING: "asin" 
> [/home/bee/Tests_buildroot/buildroot-2016.02/output/build/rtai-4.0.1/base/math/rtai_math.ko] 
> undefined!
>
> WARNING: "exp" 
> [/home/bee/Tests_buildroot/buildroot-2016.02/output/build/rtai-4.0.1/base/math/rtai_math.ko] 
> undefined!
>
> WARNING: "log10" 
> [/home/bee/Tests_buildroot/buildroot-2016.02/output/build/rtai-4.0.1/base/math/rtai_math.ko] 
> undefined!
>
> WARNING: "sinh" 
> [/home/bee/Tests_buildroot/buildroot-2016.02/output/build/rtai-4.0.1/base/math/rtai_math.ko] 
> undefined!
>
> WARNING: "pow" 
> [/home/bee/Tests_buildroot/buildroot-2016.02/output/build/rtai-4.0.1/base/math/rtai_math.ko] 
> undefined!
>
> WARNING: "atan2" 
> [/home/bee/Tests_buildroot/buildroot-2016.02/output/build/rtai-4.0.1/base/math/rtai_math.ko] 
> undefined!
>
> WARNING: "fmod" 
> [/home/bee/Tests_buildroot/buildroot-2016.02/output/build/rtai-4.0.1/base/math/rtai_math.ko] 
> undefined!
>
> WARNING: "cosh" 
> [/home/bee/Tests_buildroot/buildroot-2016.02/output/build/rtai-4.0.1/base/math/rtai_math.ko] 
> undefined!
>
> WARNING: "sqrt" 
> [/home/bee/Tests_buildroot/buildroot-2016.02/output/build/rtai-4.0.1/base/math/rtai_math.ko] 
> undefined!
>
> WARNING: "log" 
> [/home/bee/Tests_buildroot/buildroot-2016.02/output/build/rtai-4.0.1/base/math/rtai_math.ko] 
> undefined!
>
> And when I try to insmod rtai_math.ko, I get the following error :
>
> “rtai_math : unknown symbol log (err 0)
>
> rtai_math : unknown symbol sqrt (err 0)
>
> rtai_math : unknown symbol cosh (err 0)
>
> rtai_math : unknown symbol fmod (err 0)
>
> rtai_math : unknown symbol atan2 (err 0)
>
> rtai_math : unknown symbol pow (err 0)
>
> rtai_math : unknown symbol sinh (err 0)
>
> rtai_math : unknown symbol log10 (err 0)
>
> rtai_math : unknown symbol exp (err 0)
>
> rtai_math : unknown symbol asin (err 0)
>
> rtai_math : unknown symbol acos (err 0)”
>
> The solution was : replacing the option–ffast-math by-fno-math-errno 
> -funsafe-math-optimizations -fno-rounding-math
>
> -fno-signaling-nans -fcx-limited-range in rtai-4.0.1/configure.in and 
> in rtai-4.0.1/base/math/GNUMakefile.
>
> Now it compiles and insmod withoud any problem.
>

Have you tested it with "showroom" CVS, as for the test found in 
"showroom/v3.x/kern/math/?
Paolo

> Laurence TROUVÉ.
>
>
>
> _______________________________________________
> Rtai mailing list
> [email protected]
> https://mail.rtai.org/cgi-bin/mailman/listinfo/rtai

_______________________________________________
Rtai mailing list
[email protected]
https://mail.rtai.org/cgi-bin/mailman/listinfo/rtai