CodeWarrior Development ToolsのトピックLink Error: undefined 'sqrt', 'sin', 'cos', 'fabs'

Link Error: undefined 'sqrt', 'sin', 'cos', 'fabs'

zili — Wed, 12 Apr 2017 15:30:33 GMT

The CodeWarrior IDE version is 5.9.0.

Even if 'math.h' is included, the Link error still appears, while there is no problem with compiling.

Re: Link Error: undefined 'sqrt', 'sin', 'cos', 'fabs'

Carlos_Mendoza — Wed, 12 Apr 2017 16:03:04 GMT

Hi zili,

Could you tell us which MCU are you using?

Thanks in advance!

Best Regards,
Carlos Mendoza
Technical Support Engineer

Re: Link Error: undefined 'sqrt', 'sin', 'cos', 'fabs'

stanish — Thu, 13 Apr 2017 09:28:17 GMT

Hi,

First please check your compiler floating point setup:

If you don't require double precision floating point I'd recommend you to select "SPFP_Only" option since it generate most efficient SPFP code.

Next step is to add proper standard libraries (MSL + Runtime) that match with floating point option selected.

e.g.for VLE project,where char = unsigned char, and SPFP_Only floating point selected:

Use this runtime library:

"<CW for MPC55xx and MPC56xx 2.10>\PowerPC_EABI_Support\Runtime\Lib\Runtime.PPCEABI.V.SP.UC.a"

And this MSL library:

"<CW for MPC55xx and MPC56xx 2.10>\PowerPC_EABI_Support\MSL\MSL_C\PPC_EABI\Lib\MSL_C.PPCEABI.bare.V.SP.UC.a"

For more information about the libraries available please see the Build tools reference manual:

"<CW for MPC55xx and MPC56xx 2.10>\Help\PDF\Power Architecture Build Tools Reference.pdf", sections "Choosing an MSL Library", "Choosing a Runtime Library".

Hope it helps.

Stan

Re: Link Error: undefined 'sqrt', 'sin', 'cos', 'fabs'

zili — Thu, 13 Apr 2017 10:56:03 GMT

Hi Stan,

It's working fine now. Thank you very much.