CODEWITHSUNDEEP
c++makefile
aLex
aLex

Reputation: 3

Multiple objects in the same file - How to create Makefile?

I'm attempting to create a makefile for a project with the following structure:

/
|-/src
    |-objects_file.cpp
    |-objects_file.hpp
|-/testing
    |-test_objects.cpp

Assuming I have both Object1 and Object2 in the objects_file, would my makefile look like:

test_objects: objects_file.o
    $(CC) -o test_objects.bin ./testing/test_objects.cpp *.o

or 

test_objects: Object1.o Object2.o
   $(CC) -o test_objects.bin ./testing/test_objects.cpp *.o

And yes, I realize that having multiple objects in the same file is not ideal nor standard.

Upvotes: 0

Views: 1431

Answers (2)

Beta
Beta

Reputation: 99094

Assuming that the code in test_objects.cpp tests the code in objects_file.cpp, the makefile ought to contain a rule like this:

test_objects: test_objects.o objects_file.o
    $(CC) -o test_objects.bin $^

(Note the automatic variable $^ which contains all of the prerequisites, in this case test_objects.o objects_file.o.)

It doesn't matter how many classes are in objects_file.

Upvotes: 0

Yury Schkatula
Yury Schkatula

Reputation: 5369

Object file and C++ object are not related. So, makefile wil not bother about how many C++ objects are placed inside an obj file.

Upvotes: 2

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