Report a bug in Ibex

[MarmikSoniTess]

##Observed Behavior
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In Makefile, line 43: ISA := rv32imcb
Error: cannot find default versions of the ISA extension b' Error:unrecognized opcode zicsr. out/seed-31356/instr_gen/asm_test/riscv_arithmetic_basic_test_0.S:5853: Error: unrecognized opcode csrrsi t0,0x340,24', extension zicsr' required out/seed-31356/instr_gen/asm_test/riscv_arithmetic_basic_test_0.S:5870: Error: unrecognized opcode csrrs sp,0x340,t6', extension zicsr' required out/seed-31356/instr_gen/asm_test/riscv_arithmetic_basic_test_0.S:5872: Error: unrecognized opcode csrrs sp,0x340,t6', extension `zicsr' required
But when I include in Makefile, line 43:ISA := rv32imc_zicsr

##Expected Behavior

To get all Infos and resolve the zicsr issue and get the pass results

Steps to reproduce the issue

My Environment

EDA tool and version:

Operating system:

Version of the Ibex source code: