From: David Lang <david@lang.hm>
Date: Sun, 19 Mar 2017 00:19:36 GMT
Subject: Re: Is there a way to have a local version of a header file?
Message-ID: <nycvar.QRO.7.75.62.1703181712100.3797@qynat-yncgbc>
In-Reply-To: <xmqqy3w2yybt.fsf@gitster.mtv.corp.google.com>

On Sat, 18 Mar 2017, Junio C Hamano wrote:

> David Lang <david@lang.hm> writes:
>
>>> Ship a config.h.sample file, have a Makefile rule that is forced to
>>> run before any compilation happens that checks if config.h exists
>>> and then created it if missing by copying config.h.sample over, and
>>> then all other source files can include config.h without having to
>>> know anything about config.h.sample's existence.
>>>
>>> Did I miss something?
>>
>> There is no makefile with the arduino IDE/build system :-(
>
> How does "the build system" you want to make it work with actually
> work?  Is it incapable of "compiling" a "source file" into an
> "object file" that happens to be a text using an arbitrary
> "compiler"?

It looks for all *.ino files (which need to contain C code) in the specified 
("project") directory and compiles and links them all into one blob, it adds a 
smidge of code at the beginning to run setup() followed by loop(). It then dumps 
this blob (via serial/USB) into the flash of the device that will run it.

it's a very dumbed down system, designed for non-programmers to do trivial 
things (blink a few LEDs, etc) that's been pushed to far more sophisticated uses 
than it was ever designed for.

David Lang

> I was hoping that readers are imaginative enough to replace Makefile
> with whatever way things are normally built with when reading my
> message, and the reader can just replace "source file" with
> "config.h.sample", "compiler" with "test -f config.h || cat
> config.h.sample >config.h" and "object file" with "config.h".
>