-d /work/impl/gwsynthesis/build.vg
-p GW5AST-138C-PBGA484A-1
-pn GW5AST-LV138PG484AC1/I0
-cst /work/pins.cst
-cfg /work/impl/pnr/device.cfg
-sdc /work/test.sdc
-bit
-tr
-ph
-timing
-ireg_not_in_iob
-oreg_not_in_iob
-ioreg_not_in_iob
-cst_error
-convert_sdp32_36_to_sdp16_18
-place_option 3
-route_option 2
-clock_route_order 0
-correct_hold 1
-route_maxfan 23
-global_freq 5.000