--- loncom/build/Makefile	2000/12/16 14:56:31	1.11
+++ loncom/build/Makefile	2000/12/16 15:52:26	1.12
@@ -3,14 +3,26 @@
 # Scott Harrison
 # November 2000
 
+CDTARGET="."
+
 all: 
 	# nothing yet here
 
 cd: 
+	# Build temporary script to get cd
 	# make sure there is enough disk space
-	# copy cd image from install.lon-capa.org (wget -r)
-	# add in appropriate files from CVS
-	# compile cd image (mkisofs)
+	@echo "# Automatically generated Makefile for LON-CAPA" > Makefile.cd.tmp
+	@/bin/df $(CDTARGET) | perl -e '@l=<>;split(/\s+/,$$l[1]);$$s=@_[3]*1024;if ($$s>1000000000) {print "\S=1\n";} else {print "\S=0\n";}' >> Makefile.cd.tmp
+	@echo "cd:" >> Makefile.cd.tmp
+	@echo -e "ifeq (\$$(S),1)" >> Makefile.cd.tmp
+	@echo -e "\t@echo \"There is enough disk space.  Good!\"" >> Makefile.cd.tmp
+	# set up commands to copy cd image from install.lon-capa.org (wget -r)
+	# set up cvs update commands
+	# set up cd image compilation (mkisofs)
+	@echo -e "else" >> Makefile.cd.tmp
+	@echo -e "\t@echo \"ERROR ******* Not enough disk space. There must be at least one gigabyte free\"" >> Makefile.cd.tmp
+	@echo -e "endif" >> Makefile.cd.tmp
+	make -f Makefile.cd.tmp TARGET="$(CDTARGET)" cd
 
 cd_cover: