iicps: Modify Makefile to support parallel make execution

Modify the driver Makefile to support the parallel make execution.
This will reduce the compile time as it will only compile the files
which have timestamp modified.

Signed-off-by: Raviteja Narayanam <raviteja.narayanam@xilinx.com>

Acked-for-series: Srinivas Goud <srinivas.goud@xilinx.com>

XilinxProcessorIPLib/drivers/iicps/src/Makefile

@@ -1,3 +1,4 @@
+DRIVER_LIB_VERSION = 1.0
 COMPILER=
 ARCHIVER=
 CP=cp
@@ -8,33 +9,31 @@ LIB=libxil.a
 CC_FLAGS = $(COMPILER_FLAGS)
 ECC_FLAGS = $(EXTRA_COMPILER_FLAGS)
 
-RELEASEDIR=../../../lib
-INCLUDEDIR=../../../include
-INCLUDES=-I./. -I${INCLUDEDIR}
+RELEASEDIR=../../../lib/
+INCLUDEDIR=../../../include/
+INCLUDES=-I./. -I$(INCLUDEDIR)
 
-OUTS = *.o
+SRCFILES:=$(wildcard *.c)
 
-LIBSOURCES:=*.c
-INCLUDEFILES:=*.h
+OBJECTS = $(addprefix $(RELEASEDIR), $(addsuffix .o, $(basename $(wildcard *.c))))
 
-OBJECTS =	$(addsuffix .o, $(basename $(wildcard *.c)))
+libs: $(OBJECTS)
 
-libs: banner xiicps_libs clean
+DEPFILES := $(SRCFILES:%.c=$(RELEASEDIR)%.d)
 
-%.o: %.c
-	${COMPILER} $(CC_FLAGS) $(ECC_FLAGS) $(INCLUDES) -o $@ $<
+include $(wildcard $(DEPFILES))
 
-banner:
-	echo "Compiling iicps"
+include $(wildcard ../../../../dep.mk)
 
-xiicps_libs: ${OBJECTS}
-	$(ARCHIVER) -r ${RELEASEDIR}/${LIB} ${OBJECTS}
+$(RELEASEDIR)%.o: %.c
+	${COMPILER} $(CC_FLAGS) $(ECC_FLAGS) $(INCLUDES) $(DEPENDENCY_FLAGS) $(realpath $<) -o $@
 
 .PHONY: include
-include: xiicps_includes
+include: $(addprefix $(INCLUDEDIR),$(wildcard *.h))
 
-xiicps_includes:
-	${CP} ${INCLUDEFILES} ${INCLUDEDIR}
+$(INCLUDEDIR)%.h: %.h
+	$(CP) $< $@
 
 clean:
 	rm -rf ${OBJECTS}
+	rm -rf $(DEPFILES)