Using C libraries for a D program

WARNING: This recipe by an absolute D newbie has not yet been tested--corrections are welcome!

Assume one has the following, error-free files:

• a D language source program:

./main.d

• a C ABI library file:

/usr/local/lib/libbu.so

• a D language binding file to the C library API headers:

/usr/local/include/bu.d

We first create a GNU Makefile to build program test-bu using those three files (note the leading spaces on lines following targets must be tabs in a real GNU Makefile):

$ cat Makefile
# use the dmd compiler
DMD = /usr/bin/dmd

LIBDIR = /usr/local/brlcad/lib
MODDIR = /usr/local/brlcad/include

BINDINGS = bu.d

all: test-bu

test-bu: main.o 
        $(DMD) -o $@ -I$(MODDIR) $(BINDINGS) -L$(LIBDIR) -lbu
 
%.o: %.d
        $(DMD) -c $< -o $@

clean:
        -rm *.o

Then we can build test-bu by executing:

$ make test-bu