Question

Compiling platform/drivers/flash/flash_protect.c
Assembler messages:
Fatal error: invalid -march= option: `rv32imc'
scons: *** [build/build_tmp/objs/platform/drivers/flash/flash_protect.o] Error 2
BUILD FAILED!!!!

Answer

chmod +x hcc_riscv32/riscv32-unknown-elf/bin/*