vcom -work work ../src/gpm.vhd
vcom -work work ../src/gpm_b.vhd
+vcom -work work ../src/extension_pkg.vhd
+vcom -work work ../src/extension.vhd
+vcom -work work ../src/extension_b.vhd
+
vcom -work work ../src/execute_stage.vhd
vcom -work work ../src/execute_stage_b.vhd