I'm working with the SDL and SDL_mixer library and am getting the following errors when I compile:
....
game.cpp:(.text+0x88f): undefined reference to `Mix_OpenAudio'
Jukebox.o: In function `Jukebox::~Jukebox()':
Jukebox.cpp:(.text+0x17): undefined reference to `Mix_FreeChunk'
Jukebox.cpp:(.text+0x27): undefined reference to `Mix_FreeChunk'
Jukebox.cpp:(.text+0x37): undefined reference to `Mix_FreeChunk'
Jukebox.cpp:(.text+0x47): undefined reference to `Mix_FreeChunk'
....
And so on and so forth or all instances when I use a SDL_mixer function.
I'm fairly confident that the error lies within the Makefile because it compiles just fine in another test program I made.
My Makefile
SDL= -lSDL -lSDL_mixer
OBJ=game.o Jukebox.o ...
all: main
main: $(OBJ)
g++ $(SDL) $(OBJ) -o main
%.o: %.cpp
g++ $(SDL) -c $<
clean:
rm -f *.o *~ main
rm -f */*~
Where is the error?
I think the problem is the order of your arguments.
Instead of
main: $(OBJ)
g++ $(SDL) $(OBJ) -o main
try
main: $(OBJ)
g++ -o main $(OBJ) $(SDL)
While the position of -o main is not really important, the order of the link libraries is. Compilers resolve the symbols in the order the libraries appear on the command line.