Fwd: Fwd: RTAI math module compilation

---------- Forwarded message ----------
From: servo gmrt <[email protected]>
Date: Thu, Sep 15, 2016 at 3:14 PM
Subject: Re: [Rtai] Fwd: RTAI math module compilation
To: Shahbaz Youssefi <[email protected]>


HI

Thanks for your quick reply.




*Somehow in my build process in rtai  directory,the generated Makefile
(rtai-4.0.1/base/math dirctory ) takes /usr/include path after setting it
to the proper cross compiled path*


*-I//data/ICOP/buildroot-2016.02/output/host/usr/i486-icop-linux-gnu/sysroot/usr/include/*


*rtai_math.ko module is building.*



*when i try load the module I getting the following error messages,*
*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)*




*insmod can't insert 'rtai_math.ko' : unknown symbol in module or unknowm
parameter.*
How to link the math library to resolve the above errors ?.

Kindly guide me.


thanks & regards,
Thiyagarajan



On Thu, Sep 15, 2016 at 11:49 PM, Shahbaz Youssefi <[email protected]>
wrote:

> It looks like /usr/include is in your build flags, which shouldn't be
> because you are building kernel-level modules.
>
> On Thu, Sep 15, 2016 at 12:52 PM, servo gmrt <[email protected]> wrote:
>
>>
>>
>> Hi,
>>
>> Anybody compiled rtai in buildroot-2016.02 version ?
>>
>> Other than "rtai_math.ko" all the modules compiles without error. When I
>> include math module for compilation, I am getting the following error,
>>
>> The part of the make error log I attached with that.
>>
>> Help me to resolve the issue.
>>
>>
>> In file included from /usr/include/features.h:365:0,
>>                  from ../rtai-4.0.1/base/include/rtai_math.h:37,
>>                  from ../rtai-4.0.1/base/math/libm.c:24:
>> /usr/include/sys/cdefs.h:236:0: warning: "__attribute_const__" redefined
>>  # define __attribute_const__ __attribute__ ((__const__))
>>  ^
>> In file included from include/linux/compiler.h:54:0,
>>                  from include/linux/linkage.h:4,
>>                  from include/linux/kernel.h:6,
>>                  from ../rtai-4.0.1/base/math/libm.c:21:
>> include/linux/compiler-gcc.h:93:0: note: this is the location of the
>> previous definition
>>  #define __attribute_const__  __attribute__((__const__))
>>  ^
>> In file included from /usr/include/features.h:365:0,
>>                  from ../rtai-4.0.1/base/include/rtai_math.h:37,
>>                  from ../rtai-4.0.1/base/math/libm.c:24:
>> /usr/include/sys/cdefs.h:307:0: warning: "__always_inline" redefined
>>  # define __always_inline __inline __attribute__ ((__always_inline__))
>>  ^
>> In file included from include/linux/compiler.h:54:0,
>>                  from include/linux/linkage.h:4,
>>                  from include/linux/kernel.h:6,
>>                  from ../rtai-4.0.1/base/math/libm.c:21:
>> include/linux/compiler-gcc.h:112:0: note: this is the location of the
>> previous definition
>>  #define __always_inline  inline __attribute__((always_inline))
>>  ^
>> In file included from ../rtai-4.0.1/base/include/rtai_math.h:77:0,
>>                  from ../rtai-4.0.1/base/math/libm.c:24:
>> /usr/include/bits/mathcalls.h:63:21: error: expected ‘)’ before ‘,’ token
>>  __MATHCALL_VEC (cos,, (_Mdouble_ __x));
>>                      ^
>> /usr/include/bits/mathcalls.h:65:21: error: expected ‘)’ before ‘,’ token
>>  __MATHCALL_VEC (sin,, (_Mdouble_ __x));
>>                      ^
>> In file included from ../rtai-4.0.1/base/include/rtai_math.h:77:0,
>>                  from ../rtai-4.0.1/base/math/libm.c:24:
>> /usr/include/bits/mathcalls.h:100:21: error: expected ‘)’ before ‘,’
>> token
>>  __MATHCALL_VEC (exp,, (_Mdouble_ __x));
>>                      ^
>> /usr/include/bits/mathcalls.h:109:21: error: expected ‘)’ before ‘,’
>> token
>>  __MATHCALL_VEC (log,, (_Mdouble_ __x));
>>                      ^
>> In file included from ../rtai-4.0.1/base/include/rtai_math.h:77:0,
>>                  from ../rtai-4.0.1/base/math/libm.c:24:
>> /usr/include/bits/mathcalls.h:153:21: error: expected ‘)’ before ‘,’
>> token
>>  __MATHCALL_VEC (pow,, (_Mdouble_ __x, _Mdouble_ __y));
>>                      ^
>> In file included from ../rtai-4.0.1/base/include/rtai_math.h:104:0,
>>                  from ../rtai-4.0.1/base/math/libm.c:24:
>> /usr/include/bits/mathcalls.h:63:21: error: expected ‘)’ before ‘,’ token
>>  __MATHCALL_VEC (cos,, (_Mdouble_ __x));
>>                      ^
>> /usr/include/bits/mathcalls.h:65:21: error: expected ‘)’ before ‘,’ token
>>  __MATHCALL_VEC (sin,, (_Mdouble_ __x));
>>                      ^
>> In file included from ../rtai-4.0.1/base/include/rtai_math.h:104:0,
>>                  from ../rtai-4.0.1/base/math/libm.c:24:
>> /usr/include/bits/mathcalls.h:100:21: error: expected ‘)’ before ‘,’
>> token
>>  __MATHCALL_VEC (exp,, (_Mdouble_ __x));
>>                      ^
>> /usr/include/bits/mathcalls.h:109:21: error: expected ‘)’ before ‘,’
>> token
>>  __MATHCALL_VEC (log,, (_Mdouble_ __x));
>>                      ^
>> In file included from ../rtai-4.0.1/base/include/rtai_math.h:104:0,
>>                  from ../rtai-4.0.1/base/math/libm.c:24:
>> /usr/include/bits/mathcalls.h:153:21: error: expected ‘)’ before ‘,’
>> token
>>  __MATHCALL_VEC (pow,, (_Mdouble_ __x, _Mdouble_ __y));
>>                      ^
>> In file included from ../rtai-4.0.1/base/include/rtai_math.h:129:0,
>>                  from ../rtai-4.0.1/base/math/libm.c:24:
>> /usr/include/bits/mathcalls.h:63:21: error: expected ‘)’ before ‘,’ token
>>  __MATHCALL_VEC (cos,, (_Mdouble_ __x));
>>                      ^
>> /usr/include/bits/mathcalls.h:65:21: error: expected ‘)’ before ‘,’ token
>>  __MATHCALL_VEC (sin,, (_Mdouble_ __x));
>>                      ^
>> In file included from ../rtai-4.0.1/base/include/rtai_math.h:129:0,
>>                  from ../rtai-4.0.1/base/math/libm.c:24:
>> /usr/include/bits/mathcalls.h:100:21: error: expected ‘)’ before ‘,’
>> token
>>  __MATHCALL_VEC (exp,, (_Mdouble_ __x));
>>                      ^
>> /usr/include/bits/mathcalls.h:109:21: error: expected ‘)’ before ‘,’
>> token
>>  __MATHCALL_VEC (log,, (_Mdouble_ __x));
>>                      ^
>> In file included from ../rtai-4.0.1/base/include/rtai_math.h:129:0,
>>                  from ../rtai-4.0.1/base/math/libm.c:24:
>> /usr/include/bits/mathcalls.h:153:21: error: expected ‘)’ before ‘,’
>> token
>>  __MATHCALL_VEC (pow,, (_Mdouble_ __x, _Mdouble_ __y));
>>                      ^
>> ../rtai-4.0.1/base/math/libm.c:59:15: error: ‘cos’ undeclared here (not
>> in a function)
>>  EXPORT_SYMBOL(cos);
>>                ^
>> ../rtai-4.0.1/base/math/libm.c:61:15: error: ‘exp’ undeclared here (not
>> in a function)
>>  EXPORT_SYMBOL(exp);
>>                ^
>> ../rtai-4.0.1/base/math/libm.c:67:15: error: ‘log’ undeclared here (not
>> in a function)
>>  EXPORT_SYMBOL(log);
>>                ^
>> ../rtai-4.0.1/base/math/libm.c:70:15: error: ‘pow’ undeclared here (not
>> in a function)
>>  EXPORT_SYMBOL(pow);
>>                ^
>> ../rtai-4.0.1/base/math/libm.c:72:15: error: ‘sin’ undeclared here (not
>> in a function)
>>  EXPORT_SYMBOL(sin);
>>                ^
>> scripts/Makefile.build:307: recipe for target
>> '/data/ICOP/buildroot-2016.02/output/build/rtai-4.0.1/base/math/libm.o'
>> failed
>> make[2]: *** [/data/ICOP/buildroot-2016.02/output/build/rtai-4.0.1/base/math/libm.o]
>> Error 1
>> Makefile:1220: recipe for target '_module_/data/ICOP/buildroot-
>> 2016.02/output/build/rtai-4.0.1/base/math' failed
>> make[1]: *** [_module_/data/ICOP/buildroot-2016.02/output/build/rtai-4.0.1/base/math]
>> Error 2
>> make[1]: Leaving directory '/data/ICOP/buildroot-2016.02/
>> output/build/linux-3.8.13'
>> GNUmakefile:877: recipe for target 'rtai_math.ko' failed
>>
>>
>>
>> Regards,
>> Thiyagarajan.
>>
>>
>> _______________________________________________
>> 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