adds Makefile to retrieve mesh data

Makefile

+SUBDIRS := mesh src
+
+.PHONY: all $(MAKECMDGOALS) $(SUBDIRS)
+$(MAKECMDGOALS) all: $(SUBDIRS)
+
+$(SUBDIRS):
+	$(MAKE) -C $@ $(MAKECMDGOALS)

mesh/Makefile

+MESH_FILE_LINK = https://kannu.csc.fi/s/npxnWEzPowrd2by/download/MESH_Greenland.tgz
+MESH_FILE = $(notdir $(MESH_FILE_LINK))
+
+.PHONY: all clean
+
+all: $(MESH_FILE)
+
+clean:
+	rm -rf MESH*
+
+$(MESH_FILE):
+	echo $@
+	echo fetching: $@
+	curl -sL $(MESH_FILE_LINK) -o $@
+	echo unpacking: $@
+	tar xvf $@

src/Makefile

@@ -15,6 +15,8 @@ LIBS = \
 CC = mpicc
 LD = mpicc
 
+.PHONY: clean
+
 .SUFFIXES:
 
 all: elmer_dummy.x