d:/software/nucleistudio/toolchain/gcc/bin/../lib/gcc/riscv-nuclei-elf/10.2.0/../../../../riscv-nuclei-elf/bin/ld.exe: ./Drivers/NMSIS/Device/Source/system_cm32m4xxr.o\Working\Electrical machinery\EM_2023\CM32M4XXR_GPIO_2023.05\Debug/../Drivers/NMSIS/Device/Source/system_cm32m4xxr.c multiple definition of `SystemCoreClock’; ./application/Source/system_cm32m4xxr.o\Working\Electrical machinery\EM_2023\CM32M4XXR_GPIO_2023.05\Debug/../application/Source/system_cm32m4xxr.c first defined here