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From: Robert A Duff <bobduff@shell01.TheWorld.com>
Newsgroups: comp.lang.ada
Subject: Re: is getting OpenGL to work with Ada a lost cause?
Date: Mon, 18 Aug 2014 18:21:44 -0400
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Date: 2014-08-18T18:21:44-04:00
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"Nasser M. Abbasi" <nma@12000.org> writes:

> ps. Makefiles are great. I do everything with makefiles. I use
> recursive makefile to build a whole tree with one command. 

'make' is a rather poorly designed language, IMHO, for all sorts of
reasons.  (Can't blame the designers -- that was a long time ago, and
they didn't know any better.)

But recursive make is a big efficiency problem.  It's not so terrible on
Linux, but on Cygwin, it's a disaster (because windows process creation
is slow).  I once sped up a build that was taking well over 10 hours
down to 1 hour by removing recursive make.  The speedup on Linux was
less dramatic.  That was a project with about a million lines of Ada
code.  I don't remember the hardware.

Here's a paper that explains why "Recursive Make Considered Harmful":

http://aegis.sourceforge.net/auug97.pdf

And here's a fun recursive essay about "Considered Harmful":

http://meyerweb.com/eric/comment/chech.html

> ...What
> else would one use? a DOS batch file?

OK, you win.  ;-)  DOS batch files are worse than 'make' files.

- Bob