Hello Jason William,
Yes, you need add the lib manually.
In the "Value" of Define a new build variable, please add C:\FRDM-K64\CMSIS .
In the Add libraries :
Libraries(-l) : arm_cortexM4lf_math
Library search path(-L) : "${SDK_2.2_frdm-k64f_CMSIS_PATH }\Lib\GCC"
I test on my side , it can work well.
Hope it helps,
Have a great day,
TIC
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