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c++linkermakefileallegro5

How do I link Allegro 5 from my Makefile?

I need to link the Allegro Game Development Library from my Makefile. When I do this, the compiler returns:

Undefinied Reference < Function Name >.
Solution

  • Before trying to embed the compilation line into the Makefile, make sure you understand how to do it the command line, and more important, make sure it works:

    g++ hello.cpp -o hello -I/usr/include/allegro5 -L/usr/lib -lallegro

    Then, a simple Makefile to compile hello.cpp could be:

    CXX=g++
CFLAGS=
LDFLAGS=-L/usr/lib -lallegro
INCLUDE=-I. -I/usr/include/allegro5

OBJS=hello.o
OUT=hello

all: hello_rule

clean:
        rm -rf *.o hello

hello_rule: $(OBJS)
        $(CXX) $(OBJS) -o $(OUT) $(INCLUDE) $(CFLAGS) $(LDFLAGS)