Fixed issue SRA-VJTI#136 - Updated Makefile of 6_morphology

4_cv_basics/6_morphology/Makefile

@@ -6,20 +6,26 @@ PROJECT = morphology
 
 # Here Include specifies which directories can be added in the include path of the main.cpp
 CFLAGS = -std=c++11 $(shell pkg-config --cflags opencv4) -Iinclude/		
-# What libraries to be imported here it is opencv
+# What libraries to be imported here it is opencv 
 LIBS = $(shell pkg-config --libs opencv4) 
 
-# Similar to how we used to link ad make object files in the terminal
-# the command make build <subfolder name> should build the executable 
+# Source file for morphology operations
 link = src/morphology.cpp
+
+# Similar to how we used to link and make object files in the terminal
+# The command make build SRC=<FILENAME> should build the executable in the subfolder
 .PHONY: build
+ifeq ($(SRC), $(link), )
+build:
+	$(error "SRC is not set")
+else
 build:
 	@echo "Building..."
-	@$(CC) $(filter-out $@,$(MAKECMDGOALS))/main.cpp $(link) -o _$(filter-out $@,$(MAKECMDGOALS)) $(CFLAGS) $(LIBS)
-%::
-	@true
-# if folder is not set, clean all build files all subfolders
+	@$(CC) $(SRC) $(link) -o $(PROJECT) $(CFLAGS) $(LIBS)
+endif	
+
+# If folder is not set, clean all build files in all subfolders
 .PHONY: clean
 clean:
 	@echo "Cleaning..."
-	@rm -rf _$(filter-out $@,$(MAKECMDGOALS))
+	@rm -rf $(PROJECT)