Makefile with multiple targets

Question

Hopefully this is a very simple question. I have a makefile pattern rule that looks like this:

%.so : %.f %.pyf
    f2py -c -L${LAPACK_DIR} ${GRASPLIBS} -m $         


        

Answer 1

The usual trick is to add a 'dummy' target as the first that depends on all targets you want to build when running a plain make:

all: radgrd_py.so lodiso_py.so

It is a convention to call this target 'all' or 'default'. For extra correctness, let make know that this is not a real file by adding this line to your Makefile:

.PHONY: all

Answer 2

Best way is to add:

.PHONY: all
.DEFAULT: all
all: radgrd_py.so lodiso_py.so

Explanations:

make uses the first target appearing when no .DEFAULT is specified.

.PHONY informs make that the targets (a coma-separated list, in fact) don't create any file or folder.

all: as proposed by schot