I am having an issue with my makefile
assignment3: BSTapp.cpp BST.o
g++ -o assignment3 BSTapp.cpp BST.o
BST.o: BST.cpp BST.h Node.o
g++ -c BST.cpp -o BST.o
Node.o: Node.h Node.cpp
g++ -c Node.cpp -o Node.o
getting an undefined reference to all methods in the Node class. But if I directly compile using
g++ -o assignment3 BSTapp.cpp BST.h BST.cpp Node.h Node.cpp
everything works fine. What am I doing wrong in the makefile?
Because you left out the Node.o file from the makefile command under the assignment3: rule:
g++ -o assignment3 BSTapp.cpp BST.o
should be
g++ -o assignment3 BSTapp.cpp BST.o Node.o
Remarks:
I. Please don't compile headers themselves!
g++ -o assignment3 BSTapp.cpp BST.h BST.cpp Node.h Node.cpp
should be
g++ -o assignment3 BSTapp.cpp BST.cpp Node.cpp
II. Your Makefile is extremely unorganized. Better do this:
OBJECTS = $(patsubst %.cpp, %.o, $(wildcard *.cpp))
all: assignment3
assignment3: $(OBJECTS)
g++ -o $@ $^
%.o: %.cpp
g++ -c -Wall -o $@ $<
