added footprint_review target

Makefile

@@ -2,6 +2,8 @@ all:
 	@echo Usage:
 	@echo  make dsv
 	@echo  make sch
+	@echo  make brd
+	@echo  make footprint_review
 
 dsv:
 	dsv setup BOOKSHELF
@@ -11,3 +13,12 @@ sch:
 
 brd:
 	cd xue-rnc && pcbnew xue-rnc.brd
+
+footprint_review: modules/all_footprints.pdf
+	@xpdf $^
+
+modules/all_footprints.pdf: modules/*.fpd
+	@fpd2pdf -o $@ $^
+
+clean:
+	@rm -f modules/all_footprints.pdf

modules/.gitignore

@@ -0,0 +1 @@
+all_footprints.pdf