could not resolve index library "libmath.a" to a compatible library

You are mixing two different CPU’s: MSP430G and MSP430FR.

You only need to include ‘math.h’.

Thanks Leo.

Under the lib directory there is a 4xx directory, a 5xx_6xx_FRxx directory, and an FR59xx directory.  I'm using an MSP430G2755 CPU, how do I know which one to use (it's probably the 4xx directory but I'd like to know what the 4xx stands for).

Regards,

Doug

You are using a G2xxx series the others are F(G)4xxx or F5/6xxx(FR) series, you need to use the G2xxx series. For your G2xxx you don’t need to add special libraries, it’s all already included or will be build at compiler time. You only need to add the Header files.

As long you are not using the directory you will not get a warning or error. You don't need to add this or any other directory.

Sorry, still confused.  If I don't add "${CCS_BASE_ROOT}/msp430/lib/4xx" to my library search path I get the warning that I am not using the MSPMATHLIB and thus not the hardware multiplier.  When you say "As long (as) you are not using the directory ...", which directory are you referring to?  Is this possibly an artifact of the fact that I have both the CCS and GNU compilers loaded?

Thanks for your patience.

Your device: MSP430G2xxx does not have a Hardware Multiplier!

Therefore MATHLIB does not support MSP430G2xxx!

And a search path to MATHLIB is useless.

My sincere apologies Leo, I assumed that the CCS knew what it was saying when it was telling me that I should be using the MSPMATH library.  I should have looked at the datasheet.

Thanks for your help!

Doug