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Original question:

CCS/TMS320F280025: warning #10204-D: could not resolve index library "IQmath.lib" to a compatible library

TMS320F280025: warning #10204-D: could not resolve index library "IQmath.lib" to a compatible library

Asad Hameed
Intellectual 665 points
Part Number: TMS320F280025
Other Parts Discussed in Thread: C2000WARE

I am struggling with fixing the issue of including IQmath.lib. Please look at the compiler, processor and linker settings that I have done in my project.

processor options

compiler settings

linker settings

I have included  the  "IQmathLib.h"  file in my project and in the header file I have selected math type as IQ_MATH.

#ifndef MATH_TYPE
#define MATH_TYPE IQ_MATH
#endif

I am using the following command file for building the project:

28002x_IQmath_lnk_CProj.cmd

  • 0
    TI__Expert 5410 points

    Hi,

    Can you try changing the link order to IQMath.lib first and then libc.a second? 

    -Shantanu

  • 0 in reply to Shanty
    Intellectual 665 points

    Thank you very much for suggesting a solution. I think that IQmath.Lib is already up in the list above libc.a. Kindly explain further for my clarification. 

  • 0 in reply to Shanty
    Intellectual 665 points

    Thank you very much for suggesting a solution. I think that IQmath.Lib is already up in the list above libc.a. Kindly explain further for my clarification. 

  • 0 in reply to Asad Hameed
    TI__Expert 5410 points

    I see that it is not the first entry. Can you make it the first lib? 
    By that I mean,

    IQmath.lib

    libc.a

    $(COM_TI_C200ware...)

  • 0 in reply to Shanty
    Intellectual 665 points

    I have tried by making the IQmath.lib the first item but the results remain the same. However if I replace the IQmath.lib with the IQmath_fpu32.lib, then the project compiles and links successfully. In the "IQmathLib.h" header file I have defined : define   MATH_TYPE      IQ_MATH. I have done some calculations verifications and the results are correct. Can anyone give a feedback if it is the optimized way of implementing fixed point calculations?. Is there any performance compromise if I use IQmath_fpu32 library in place of of IQmath library (I understand that IQmath_fpu32 is more suitable for controllers having fpu hardware. Correct me if I am wrong). The snapshot of the linker settings that work are shown in the below snapshot:

  • 0 in reply to Asad Hameed
    TI__Expert 5410 points

    Hi,

    The IQmath.lib is an index library which automatically picks out the correct library based on the project configuration. So functionally, it is exactly the same as you directly including IQmath_fpu32.lib.

    To resolve the index library issue, can you try the included examples which use the IQMath index library and see if that works?

    -Shantanu

  • 0 in reply to Shanty
    Intellectual 665 points

    Dear Shanty I have tried and explored the example project in C2000Ware directory. The example project builds and runs without any errors/warnings. I tried replicating the example project settings into my own project but it seems that I still miss something. I think I can work with direct including IQmath_fpu32.lib as the project is compiling and linking without any errors. I have also verified results of some calculations done in Q17 format. Thank you very much for your guidance and support.