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From: Robert A Duff <bobduff@shell01.TheWorld.com>
Subject: Re: is getting OpenGL to work with Ada a lost cause?
Date: Mon, 18 Aug 2014 18:21:44 -0400
Date: 2014-08-18T18:21:44-04:00	[thread overview]
Message-ID: <wcc1tsd1ls7.fsf@shell01.TheWorld.com> (raw)
In-Reply-To: lstsdn$35p$1@speranza.aioe.org

"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

  reply	other threads:[~2014-08-18 22:21 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-08-02 20:54 is getting OpenGL to work with Ada a lost cause? pincerfae
2014-08-03  9:35 ` jsquirek
2014-08-03  9:54   ` Dmitry A. Kazakov
2014-08-03 10:27     ` jsquirek
2014-08-03 11:56       ` Dmitry A. Kazakov
2014-08-03 12:40         ` jsquirek
2014-08-04 12:52           ` Dmitry A. Kazakov
2014-08-04 19:14             ` Björn Lundin
2014-08-03 16:46     ` Shark8
2014-08-04  1:38       ` Nasser M. Abbasi
2014-08-03 16:43   ` Shark8
2014-08-03 12:12 ` francois_fabien
2014-08-05 16:24 ` leonid.dulman
2014-08-13 23:23   ` pincerfae
2014-08-14  1:47     ` Shark8
2014-08-15 14:53       ` Stephen Leake
2014-08-15 16:50         ` Shark8
2014-08-15 13:28     ` jsquirek
2014-08-16 19:33       ` Nasser M. Abbasi
2014-08-16 22:13         ` pincerfae
2014-08-17 11:32           ` Luke A. Guest
2014-08-18 16:35             ` Shark8
2014-08-18 20:26               ` Luke A. Guest
2014-08-18 21:01                 ` Shark8
2014-08-18 21:44                   ` Luke A. Guest
2014-08-18 21:49                   ` Nasser M. Abbasi
2014-08-18 22:21                     ` Robert A Duff [this message]
2014-08-19  9:39                       ` Simon Wright
2014-08-19  1:25                     ` Shark8
2014-08-19  9:45                       ` Simon Wright
2014-08-19 21:59                         ` Shark8
2014-08-20 20:09                         ` erlo
2014-08-19  7:42                     ` Dmitry A. Kazakov
2014-08-19 11:36                     ` Björn Lundin
2014-08-25  5:27                     ` Tero Koskinen
2014-08-19  0:57           ` Nasser M. Abbasi
2014-08-19  1:29             ` Luke A. Guest
2014-08-24 22:35               ` pincerfae
2014-08-25  4:21                 ` jsquirek
2014-08-25 15:58                   ` Lucretia
2014-08-24 17:16 ` gdotone
2014-08-24 18:49   ` gautier_niouzes
2014-09-02 16:39 ` Quentin Ochem
2014-09-12  8:14   ` reinkor
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