makefile: make YOSYS_EXE and YOSYS_FLGAS available to scripting

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

Author: oharboe

flow/Makefile

@@ -208,7 +208,7 @@ ifeq (,$(strip $(NUM_CORES)))
 endif
 export NUM_CORES
 
-YOSYS_FLAGS += -v 3
+export YOSYS_FLAGS += -v 3
 
 #-------------------------------------------------------------------------------
 # setup all commands used within this flow
@@ -231,7 +231,7 @@ OPENROAD_CMD             = $(OPENROAD_EXE) -exit $(OPENROAD_ARGS)
 OPENROAD_NO_EXIT_CMD     = $(OPENROAD_EXE) $(OPENROAD_ARGS)
 OPENROAD_GUI_CMD         = $(OPENROAD_EXE) -gui $(OR_ARGS)
 
-YOSYS_EXE               ?= $(abspath $(FLOW_HOME)/../tools/install/yosys/bin/yosys)
+export YOSYS_EXE               ?= $(abspath $(FLOW_HOME)/../tools/install/yosys/bin/yosys)
 
 # Use locally installed and built klayout if it exists, otherwise use klayout in path
 KLAYOUT_DIR = $(abspath $(FLOW_HOME)/../tools/install/klayout/)