Bigdot

When I update my environment variable, the error becomes as following: ``` yosys -p 'read_verilog -I ../../../hdl -DCONFIG_HEADER="config_default.vh" /data/gitEDA/hazard3/test/sim/tb_cxxrtl/tb.v /home/bigdot/gitEDA/hazard3/hdl/debug/cdc/hazard3_reset_sync.v /data/gitEDA/hazard3/hdl/hazard3_core.v /data/gitEDA/hazard3/hdl/hazard3_cpu_1port.v /data/gitEDA/hazard3/hdl/hazard3_cpu_2port.v /data/gitEDA/hazard3/hdl/arith/hazard3_alu.v /data/gitEDA/hazard3/hdl/arith/hazard3_branchcmp.v /data/gitEDA/hazard3/hdl/arith/hazard3_mul_fast.v /data/gitEDA/hazard3/hdl/arith/hazard3_muldiv_seq.v /data/gitEDA/hazard3/hdl/arith/hazard3_onehot_encode.v /data/gitEDA/hazard3/hdl/arith/hazard3_onehot_priority.v /data/gitEDA/hazard3/hdl/arith/hazard3_onehot_priority_dynamic.v...