simplify compression

Makefile

@@ -3,6 +3,7 @@ CXXFLAGS = --std=c++11
 RM       = rm -r
 TAR      = tar -cf
 CP       = cp -r
+MKDIR    = mkdir -p
 
 SRC_DIR = src
 INC_DIR = includes
@@ -12,11 +13,9 @@ OBJETS  = $(patsubst %.cpp,%.cpp.o,$(notdir $(SOURCES)))
 EXE     = projet
 EXE_EXT = out
 
-PDF_LOCATION = report
-PDF_FILE     = explications.pdf
-
 ARCHIVE     = binome38.tar
 ARCHIVE_DIR = Botti-Kennel
+PDF_DIR = report
 
 %.cpp.o: $(SRC_DIR)/%.cpp
 	$(CXX) -c -o $@ $< $(CXXFLAGS) $(DEVFLAGS)
@@ -46,8 +45,8 @@ clean: pdf-clean
 	-$(RM) $(OBJETS) "$(EXE).$(EXE_EXT)" "$(ARCHIVE)"
 
 archive: pdf-make
-	@mkdir $(ARCHIVE_DIR)
-	$(CP) "$(SRC_DIR)/" "$(INC_DIR)/" Makefile README.md "$(PDF_LOCATION)/$(PDF_FILE)" \
+	$(MKDIR) $(ARCHIVE_DIR)
+	$(CP) "$(SRC_DIR)/" "$(INC_DIR)/" Makefile README.md $(wildcard $(PDF_DIR)/*.pdf) \
 	      $(ARCHIVE_DIR)
 	$(TAR) "$(ARCHIVE)" $(ARCHIVE_DIR)
 	$(RM) "$(ARCHIVE_DIR)"