Re: hidden dependencies

[Oleksandr Gavenko]

On 21.01.2011 13:53, Krzysztof Cieniuch wrote:
> But there
> is caching and debugging mechanism that allows
> to print generated rules instead of invoking them i.e. you may direct
> build system so instead rule evaluating it prints them using $(info ).
How this done? Please explain more. '-n' option?

> So it easy to verify if generated rules are correct or troubleshoot why
> something doesn't work as expected.
> Note this is different from -n switch since that debug output is fully
> valid makefile with all the generated recipes.
> It can be used to build project this is how caching works. The size of
> cached makefile in project root is about 11M
> and then even on T5440 it takes 20 seconds to parse that makefile
> instead of 2.5 minute.
This is nice tips!

> I think it would be worth to put some good ideas or best practices into
> make manual instead of
> chapter "5.7 Recursive Use of make" :-)
GNU Make manual is great but don't teach you how write Makefiles.

There are exist some GNU Make HOWTO. I learn GNU Make by
well known Russian howto:

  http://citforum.ru/operating_systems/gnumake/

Also interesting theme can be found at:

  http://mad-scientist.net/make/

And available for free

  http://oreilly.com/catalog/make3/book/index.csp

"Managing Projects with GNU Make", Third Edition
 By Robert Mecklenburg.

Also I found that this book updated by this person:

  http://wanderinghorse.net/computing/make/

--
С уважением, Александр Гавенко.