Added make file commands so it's possible to 'build' and SRTM object …

…from the command like. i.e. make N15W088.hgt.zip

.gitignore

@@ -26,6 +26,7 @@
 /conf/conf.xml.20*
 /conf/control_panel.xml
 /conf/%gconf.xml
+/conf/srtm_data/*
 
 # /doc/pprz_algebra/
 /doc/pprz_algebra/headfile.log

Makefile

@@ -241,3 +241,9 @@ paparazzi:
 sw/simulator/launchsitl:
 	cat src/$(@F) | sed s#OCAMLRUN#$(OCAMLRUN)# | sed s#OCAML#$(OCAML)# > $@
 	chmod a+x $@
+
+#.SUFFIXES: .hgt.zip
+
+%.hgt.zip:
+	cd data/srtm; $(MAKE) $(@)
+

data/srtm/Makefile

@@ -0,0 +1,31 @@
+DATADIR = $(PAPARAZZI_HOME)/conf/srtm_data
+Q=@
+
+SRTMData: $(DATADIR)/Africa $(DATADIR)/Australia $(DATADIR)/Eurasia $(DATADIR)/Islands $(DATADIR)/North_America $(DATADIR)/South_America
+
+$(DATADIR):
+	mkdir $(DATADIR)
+
+$(DATADIR)/Africa: $(DATADIR)
+	wget -O $(@) http://dds.cr.usgs.gov/srtm/version2_1/SRTM3/$(@F)
+
+$(DATADIR)/Australia: $(DATADIR)
+	wget -O $(@) http://dds.cr.usgs.gov/srtm/version2_1/SRTM3/$(@F)
+
+$(DATADIR)/Eurasia: $(DATADIR)
+	wget -O $(@) http://dds.cr.usgs.gov/srtm/version2_1/SRTM3/$(@F)
+
+$(DATADIR)/Islands: $(DATADIR)
+	wget -O $(@) http://dds.cr.usgs.gov/srtm/version2_1/SRTM3/$(@F)
+
+$(DATADIR)/North_America: $(DATADIR)
+	wget -O $(@) http://dds.cr.usgs.gov/srtm/version2_1/SRTM3/$(@F)
+
+$(DATADIR)/South_America: $(DATADIR)
+	wget -O $(@) http://dds.cr.usgs.gov/srtm/version2_1/SRTM3/$(@F)
+
+.SUFFIXES: .hgt.zip
+
+%.hgt.zip: SRTMData
+	$(Q)wget -c -nv -N http://dds.cr.usgs.gov/srtm/version2_1/SRTM3/$(shell grep -l $(@F) $(DATADIR)/* | sed -e s#$(DATADIR)/##)/$(@F)
+