makefile: restore intent of SYNTH_ARGS, normally adjusted by user

SYNTH_OPERATIONS_ARGS is not normally adjusted by the user.

This restores the intent of SYNTH_ARGS usage in genMassive.py,
scripts/sc/targets/*_orflow.py and also the bazel-orfs
use-case.

Signed-off-by: Øyvind Harboe <[email protected]>

Author: oharboe

flow/Makefile

@@ -189,8 +189,11 @@ export RESYNTH_AREA_RECOVER ?= 0
 export RESYNTH_TIMING_RECOVER ?= 0
 export ABC_AREA ?= 0
 
-# Global setting for Synthesis
-export SYNTH_ARGS ?= -flatten -extra-map $(FLOW_HOME)/platforms/common/lcu_kogge_stone.v
+# User adjustable synthesis arguments
+export SYNTH_ARGS ?= -flatten
+# Not normally adjusted by user
+export SYNTH_OPERATIONS_ARGS ?= -extra-map $(FLOW_HOME)/platforms/common/lcu_kogge_stone.v
+export SYNTH_FULL_ARGS ?= $(SYNTH_ARGS) $(SYNTH_OPERATIONS_ARGS)
 
 # Global setting for Floorplan
 export PLACE_PINS_ARGS

flow/scripts/synth.tcl

@@ -12,7 +12,7 @@ if { [info exist ::env(SYNTH_GUT)] && $::env(SYNTH_GUT) == 1 } {
   delete $::env(DESIGN_NAME)/c:*
 }
 
-synthesize_check $::env(SYNTH_ARGS)
+synthesize_check $::env(SYNTH_FULL_ARGS)
 
 if { [info exists ::env(USE_LSORACLE)] } {
     set lso_script [open $::env(OBJECTS_DIR)/lso.script w]