Add common project Makefile for Xilinx projects

The project Makefiles for the Xilinx projects share most of their code. The
only difference is the list of project dependencies.

Create a file that has the common parts and can be included by the project
Makefiles.

This drastically reduces the size of the project Makefiles and also allows
to change the Makefile implementation without having to re-generate all
Makefiles.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>

projects/scripts/project-xilinx.mk

@@ -0,0 +1,54 @@
+####################################################################################
+## Copyright 2018(c) Analog Devices, Inc.
+####################################################################################
+
+# Assumes this file is in prpojects/scripts/project-xilinx.mk
+HDL_PROJECT_PATH := $(subst scripts/project-xilinx.mk,,$(lastword $(MAKEFILE_LIST)))
+HDL_LIBRARY_PATH := $(HDL_PROJECT_PATH)../library/
+
+VIVADO := vivado -mode batch -source
+
+CLEAN_TARGET := *.cache
+CLEAN_TARGET += *.data
+CLEAN_TARGET += *.xpr
+CLEAN_TARGET += *.log
+CLEAN_TARGET += *.jou
+CLEAN_TARGET +=  xgui
+CLEAN_TARGET += *.runs
+CLEAN_TARGET += *.srcs
+CLEAN_TARGET += *.sdk
+CLEAN_TARGET += *.hw
+CLEAN_TARGET += *.sim
+CLEAN_TARGET += .Xil
+CLEAN_TARGET += *.ip_user_files
+
+# Common dependencies that all projects have
+M_DEPS += system_project.tcl
+M_DEPS += system_bd.tcl
+M_DEPS += $(wildcard system_top*.v)
+M_DEPS += $(wildcard system_constr.xdc) # Not all projects have this file
+M_DEPS += $(HDL_PROJECT_PATH)scripts/adi_project.tcl
+M_DEPS += $(HDL_PROJECT_PATH)scripts/adi_env.tcl
+M_DEPS += $(HDL_PROJECT_PATH)scripts/adi_board.tcl
+
+M_DEPS += $(foreach dep,$(LIB_DEPS),$(HDL_LIBRARY_PATH)$(dep)/$(notdir $(dep)).xpr)
+
+.PHONY: all lib clean clean-all
+all: lib $(PROJECT_NAME).sdk/system_top.hdf
+
+clean:
+	rm -rf $(CLEAN_TARGET)
+
+clean-all: clean
+	@for lib in $(LIB_DEPS); do \
+		$(MAKE) -C $(HDL_LIBRARY_PATH)$${lib} clean; \
+	done
+
+$(PROJECT_NAME).sdk/system_top.hdf: $(M_DEPS)
+	-rm -rf $(CLEAN_TARGET)
+	$(VIVADO) system_project.tcl >> $(PROJECT_NAME)_vivado.log 2>&1
+
+lib:
+	@for lib in $(LIB_DEPS); do \
+		$(MAKE) -C $(HDL_LIBRARY_PATH)$${lib} || exit $$?; \
+	done