Monday, 16 March 2015

metaprogramming make

I spent the last few days mucking about with writing some in-depth cookbook articles on using make to build java projects but only just came across this cool series of articles about metaprogramming make today. I haven't read it all yet but i wish i'd known about using $(info ) earlier.

As a quick preview the following is a roughly minimal example of the sort of GNU Makefile i've got working:


thing_JAVAC_LIBS=lib/library-0.jar     # compile-time
thing_JAR_LIBS=lib/library-0.jar       # run-time & added to manifest
thing_MANIFEST=thing-manifest          # sets entry point or other

DIST_EXTRA=Makefile java.make COPYING

include java.make

This provides jar, sources, javadoc, package (binary with bundled libs, source + doc jars), and dist targets automatically. All build stages go into 'build' and all final outputs go into 'bin'.

java.make is only about 100 lines of make code, mostly a template for all the targets.

I've also started on a junit.make which does some basic junit stuff but I don't really know much about using that and running it outside of some 'mega-tool' doesn't seem very common.

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