Correction:> Copy both arm_cortexM4lf_math.lib and libarm_cortexM4lf_math.a to a manually created subfolder:It is sufficient to copy only libarm_cortexM4lf_math.a.> And specify the library to be used - without extension!!!!:Without extension and with...

I had the same issue with CubeMX 5.5.5, one has to check on this screen the CMSIS packages:Then arm_math.h will appear:You can compile then, but the linker will miss the libraries. Lost a lot of time and figured out, that it worked for me as follows:...