Makefile: generate contents.xml for supported platforms

For platforms with a contents.xml.in avilable, generate
contents.xml from it using gen_contents.py

Signed-off-by: Viswanath Kraleti <[email protected]>

Author: vkraleti

Makefile

@@ -1,23 +1,31 @@
 TOPDIR := $(PWD)
 PLATFORMS := $(foreach platform,$(wildcard platforms/*),$(platform)/gpt)
 PARTITIONS_XML := $(foreach platform,$(wildcard platforms/*),$(platform)/partitions.xml)
-BINS := gen_partition.py msp.py ptool.py
+CONTENTS_XML := $(patsubst %.xml.in,%.xml,$(wildcard platforms/*/contents.xml.in))
+BINS := gen_contents.py gen_partition.py msp.py ptool.py
 PREFIX ?= /usr/local
 
 .PHONY: all check clean lint integration
 
-all: $(PLATFORMS) $(PARTITIONS_XML)
+all: $(PLATFORMS) $(PARTITIONS_XML) $(CONTENTS_XML)
 
 %/gpt: %/partitions.xml
 	cd $(shell dirname $^) && $(TOPDIR)/ptool.py -x partitions.xml
 
 %/partitions.xml: %/partitions.conf
 	$(TOPDIR)/gen_partition.py -i $^ -o $@
 
+%/contents.xml: %/partitions.xml %/contents.xml.in
+	$(TOPDIR)/gen_contents.py -p $< -t $@.in -o $@
+
 lint:
 	# W605: invalid escape sequence
 	pycodestyle --select=W605 *.py
 
+	# gen_contents.py is nearly perfect except E501: line too long.
+	# Ensure there are no regressions.
+	pycodestyle --ignore=E501 gen_contents.py
+
 integration: all
 	# make sure generated output has created expected files
 	tests/integration/check-missing-files platforms/*/*.xml