And this change means that we need to use GNU make 3.81 or newer. Since 3.81 is about 8 years old, I don't think that this should cause any problems.

Hmm, doesn't work for me. After make clean I get:

make: *** No rule to make target 'build/py', needed by 'build/py/qstrdefs.generated.h'.  Stop.

But, otherwise, really nice work! Thanks!

Hmm. So I just checked out the latest (I'm now at fcd4ae) and it seems to be working for me.

The rules to make the directories (build and build/py) are in py/mkrules.mk

OBJ_DIRS = $(sort $(dir $(OBJ)))
$(OBJ): | $(OBJ_DIRS)
$(OBJ_DIRS):
    mkdir -p $@

So adding

$(info OBJ = $(OBJ))
$(info OBJ_DIRS = $(OBJ_DIRS))

might shed some light. If not, then if you want to email the output the make V=1 -d and also make V=1 -p to dhylands at gmail dot com, then I can see whats up.

Oh - yeah the generated header had to be dealt with specially. This line in py.mk

$(PY_BUILD)/qstrdefs.generated.h: | $(PY_BUILD)

is supposed to get the directory created.

I'll probably need to look at your make -d and make -p output.

So if anybody else runs into any build issues that might be related to the dependency code, please run this command:

make -dp whatever-other-options-you-normally-use > make.log 2>&1

and email me the make.log file (dhylands at gmaile dot com).

Thanks

I don't want to reopen but have you guys considered waf ?
http://code.google.com/p/waf/wiki/WafAndOtherBuildSystems

Might an end goal to be to create builds for various targets and make it easy to update efficiently when a header or any other file is touched appropriately.

Oh and hey its Python, BSD, can be included, small, fast, efficient, blah blha blah...

@Neon22: Yes, we did, see original issue: #115. The problem with alternative systems is that there're so many of them and everyone likes different one.

I'd rather stick to something bog standard (ie make). I don't want to introduce extra build dependencies if it can be helped. Maybe in the future using make gets out of hand and we need to switch to something else, but for now it'll do :)