Thread: g++ makefile acting weird with objects in a folder...

  1. #1
    Registered User
    Join Date
    Mar 2005

    g++ makefile acting weird with objects in a folder...

    I have a pretty simple makefile setup, I'm using mingw32 on a windows box.

    CXX = g++ $(CFLAGS)
    all: adventure.exe
    debug: CFLAGS = -g
    debug: adventure.exe
    adventure.exe: main.o Dictionary.o GameManager.o Object.o Room.o
    	$(CXX) main.o Dictionary.o GameManager.o Object.o Room.o -o adventure.exe
    main.o: main.cpp
    	$(CXX) -c main.cpp -o main.o
    Dictionary.o: src\\Dictionary.cpp
    	$(CXX) -c src\\Dictionary.cpp -o Dictionary.o
    GameManager.o: src\\GameManager.cpp
    	$(CXX) -c src\\GameManager.cpp -o GameManager.o
    Object.o: src\\Object.cpp
    	$(CXX) -c src\\Object.cpp -o Object.o
    Room.o: src\\Room.cpp
    	$(CXX) -c src\\Room.cpp -o Room.o
    	del *.o adventure.exe
    This generates all the .o files in the same root folder, make all, debug, clean all work fine, and when I run make it will only rebuild the dependencies if a file has been modified like I've seen on linux.

    Now if I put the object files into a folder called "objs", and rebuild it will always rebuild even if I haven't modified any of the source/headers.

    Is there a trick to getting this to work with the objects in a folder on a windows box? This is driving me crazy!

  2. #2
    and the hat of int overfl Salem's Avatar
    Join Date
    Aug 2001
    The edge of the known universe
    Did you change all the relative paths?
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
    If at first you don't succeed, try writing your phone number on the exam paper.

  3. #3
    Officially An Architect brewbuck's Avatar
    Join Date
    Mar 2007
    Portland, OR
    If you posted the actual makefile it would help...
    	if (a) do { f( b); } while(1);
    	else   do { f(!b); } while(1);

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