Add a 35C3 template for Decentralized FOSDEM devroom

35C3/fosdem_decentralized/Makefile

+# base name
+TARGET_BASE := 35C3_ad_FOSDEM_Decentralized
+
+QRBGCOL := 00000000
+QRCOL := 000000
+
+QR_URL := https://fosdem.org/2019/schedule/track/decentralized_internet_and_privacy/
+#XXX: inkscape cannot link to external SVG, nor move objects by command line :-(
+QR_IMG := qr.png
+
+
+all: $(TARGET_BASE).png $(TARGET_BASE).jpg
+
+#XXX: inkscape cannot link to external SVG, nor move objects by command line :-(
+# Makefile dependency forces regeneration if URL changes
+$(QR_IMG): Makefile
+	qrencode --foreground $(QRCOL) --background $(QRBGCOL) -t PNG -s 10 -o $@ "$(QR_URL)"
+
+
+$(TARGET_BASE).png: $(TARGET_BASE).svg $(QR_IMG)
+	inkscape $< --export-png $@
+
+$(TARGET_BASE).jpg: $(TARGET_BASE).png
+	convert $< $@
+
+clean:
+	rm -f $(TARGET_BASE).png $(TARGET_BASE).jpg $(QR_IMG)
+