Total rework of simulator for dev branch. Create separate thread for interrupt processes. Tick-accurate simulation of timers. Non-blocking character input for running in realtime mode. Decouple hardware sim from grbl code as much as possible. Expanded command line options. Provisions for cross-platform solution.

sim/Makefile

@@ -15,11 +15,13 @@
 #  You should have received a copy of the GNU General Public License
 #  along with Grbl.  If not, see <http://www.gnu.org/licenses/>.
 
-OBJECTS    = main.o simulator.o runtime.o ../protocol.o ../planner.o ../settings.o ../print.o ../nuts_bolts.o eeprom.o serial.o avr/pgmspace.o avr/interrupt.o util/delay.o util/floatunsisf.o ../stepper.o ../gcode.o ../spindle_control.o ../motion_control.o ../limits.o ../report.o ../coolant_control.o
+PLATFORM   = LINUX
+
+OBJECTS    = main.o simulator.o serial.o ../main.o ../protocol.o ../planner.o ../settings.o ../print.o ../nuts_bolts.o eeprom.o ../serial.o avr/pgmspace.o avr/interrupt.o avr/io.o util/delay.o util/floatunsisf.o ../stepper.o ../gcode.o ../spindle_control.o ../motion_control.o ../limits.o ../report.o ../coolant_control.o ../probe.o ../system.o kbhit.o platform_$(PLATFORM).o
 CLOCK      = 16000000
 EXE_NAME   = grbl_sim.exe
-COMPILE    = $(CC) -Wall -Os -DF_CPU=$(CLOCK) -include config.h -I.
-
+COMPILE    = $(CC) -Wall -g -DF_CPU=$(CLOCK) -include config.h -I. -DPLAT_$(PLATFORM)
+LINUX_LIBRARIES = -lrt -pthread
 # symbolic targets:
 all:	main
 
@@ -30,15 +32,18 @@ clean:
 
 # file targets:
 main: $(OBJECTS)
-	$(COMPILE) -o $(EXE_NAME) $(OBJECTS) -lm
+	$(COMPILE) -o $(EXE_NAME) $(OBJECTS) -lm -lrt $($(PLATFORM)_LIBRARIES)
 
 %.o: %.c
-	$(COMPILE) -c $< -o $@
-
-../protocol.o: ../protocol.c
-	$(COMPILE) -include rename_execute_runtime.h -c $< -o $@
+	$(COMPILE)  -c $< -o $@
 
 ../planner.o: ../planner.c
 	$(COMPILE) -include planner_inject_accessors.c -c $< -o $@
 
+../serial.o: ../serial.c
+	$(COMPILE) -include serial_hooks.h -c $< -o $@
+
+../main.o: ../main.c
+	$(COMPILE) -include rename_main.h -c $< -o $@
+