Including "DSP Fixed-Point Math Library" in Harmony Configurator generates errors in dsp.h (Zyxmn)

I use a PIC32MZ2048EFH100 and as the heading suggests, when I include the DSP library and build the project I get errors such as : previous definition of 'mul16' was herestatic inline int16_t mul16(int16_t a, int16_t b) and also errors such as :microchip\..