avoid conflict with the doc dir, avoid conflict with the DOC variable in user...

avoid conflict with the doc dir, avoid conflict with the DOC variable in user and technical manuals, generate the doxygen pdf document

configure

@@ -105,15 +105,15 @@ fi
 	@echo "Compilation completed! File created in 'bin' folder."
 	@echo " "
 
-DOC = ../documentation/
-.PHONY: doc
+DOCUMENTATION = ../documentation/
 doc:
 	doxygen Doxyfile
-	make -C \$(DOC)/user_manual
-	make -C \$(DOC)/technical_manual
+	make -C \$(DOCUMENTATION)/latex
+	make -C \$(DOCUMENTATION)/user_manual
+	make -C \$(DOCUMENTATION)/technical_manual
 	@echo " "
 	@echo "Documentation generated successfully!"
-	@echo "It could be find in the \$(DOC) folder."
+	@echo "It could be find in the \$(DOCUMENTATION) folder."
 	@echo " "
 
 clean:
@@ -125,10 +125,10 @@ clean:
 
 
 cleanall:	clean
-	make -C \$(DOC)/user_manual cleanall
-	make -C \$(DOC)/technical_manual cleanall
+	make -C \$(DOCUMENTATION)/user_manual cleanall
+	make -C \$(DOCUMENTATION)/technical_manual cleanall
 	@(cd bin/ && \$(RM) vite)
-	@(cd \$(DOC) && rm -rf html/ latex/)
+	@(cd \$(DOCUMENTATION) && rm -rf html/ latex/)
 
 distclean:	cleanall
 	\$(RM) Makefile