1 files changed, 9 insertions, 3 deletions

diff --git a/Makefile b/Makefile
index 7d4e583..a270196 100644
--- a/Makefile
+++ b/Makefile
@@ -13,10 +13,15 @@ findopts := $(foreach ext,$(exts),-or -iname "*.$(ext)")
 
 all:    sty $(NAME).pdf
 
+testsamples:
+        if [ ! -d $(SAMPLES) ] ; \
+        then echo "$(SAMPLES)/ directory is needed. Aborting." && exit 1 ; \
+        fi
+
 sty: clean
         $(CMP) $(NAME).ins >/dev/null
 
-$(NAME).pdf: $(NAME).dtx
+$(NAME).pdf: testsamples $(NAME).dtx
         @ echo "Making the sample files first..."
         $(MAKE) --directory=$(SAMPLES)
         @ echo "Building the documentation of $(NAME)..."
@@ -33,7 +38,7 @@ $(NAME).pdf: $(NAME).dtx
 samples: clean sty
         $(MAKE) --directory=$(SAMPLES)
 
-clean:
+clean: testsamples
         rm -rf auto
         rm -f $(NAME).bib $(PWD)/TMP/*.bib
         rm -rf .backup
@@ -93,4 +98,5 @@ package: distclean all
         tar czf $(NAME)-$(VERS).tar.gz $(NAME).tds.zip $(NAME)/
         rm -rf $(NAME)/
 
-.PHONY: all clean distclean inst local uninst install uninstall zip package samples
+.SILENT: testsamples
+.PHONY: all clean distclean inst local uninst install uninstall zip package samples testsamples