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Re: Compiling and linking code from different places in the file system

From Andy Walker <anw@cuboid.co.uk>
Newsgroups comp.lang.misc
Subject Re: Compiling and linking code from different places in the file system
Date 2018-03-26 19:42 +0100
Organization Not very much
Message-ID <p9bf00$vcg$1@gioia.aioe.org> (permalink)
References (26 earlier) <p8udbe$tne$1@dont-email.me> <p93fj3$fki$1@gioia.aioe.org> <p93n4n$ac8$1@dont-email.me> <p949o5$1oa7$1@gioia.aioe.org> <p95vhs$veb$1@dont-email.me>

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On 24/03/18 16:48, James Harris wrote:
>>> [...] That leads to many makefiles having to split the operations
>>> so you often see
>>>      make depend
>>>      make
>>> The second command uses the dependency files produced by the first. It
>>> would be better to have that stuff handled automatically.
>>     Arguably;  but that would require "make" to re-determine all the
>> dependencies.
> Sure. Is that bad?

	Well, it's less efficient [not really an issue, it isn't usually
"make" itself, as opposed to the commands it runs, that takes the time].
There is a much more serious problem in that you could finish up with a
never-ending make if the "make" process changes some files creating a
new list of things to do which change some files creating ....  I expect
there could be ways around that.

	If "make depend;  make" really bothers you, put a "make" at the
end of the commands run by "make depend"?  [Works on my computer, don't
know whether it's guaranteed.]

>>> 3. The make command is, if anything, too flexible for building
>>> programs, and that leads to some people writing crazy makefiles.
>>     I asked earlier what you meant by "flexible", and I'm still not
>> sure I understand your point. [...]
> A makefile can do almost anything you can do under your id,

	Well, yes.  So can lots of commands.  The moral is not to let
any code that you don't entirely trust* run on your computer with your
privileges.  Nothing special about "make".  [Not that I often have to
use external "makefile"s these days -- most of my software is installed
from the repositories.]

   * Or indeed, any code -- I assume you know Ken Thompson's 1984 ACM
     Turing Award lecture/paper on trust?  But I don't suppose many of
     us have gone to the lengths of re-compiling "make" from source
     using entirely hand-written tools, etc., etc.

>							      and some
> people who write makefiles should enter obfuscation contests. They
> could be even worse when written by a program.

	That hasn't really been my experience, so I'm still not entirely
clear what your problem is.

> Rather than that, sometimes, restrictions which enforce a dependable
> structure can be very welcome.

	I understand that in terms of what can be done [eg] inside a
programming language -- that adding feature after feature is not always
a Good Thing --, I'm less clear what commands you want to disallow in
a "makefile" [or near equivalent].  Other, of course, than the commands
you could equally allow/disallow in a restricted shell.

[...]
> To be clear of how I see this all fitting together, the user running
> the builds would have a config file (call it ~/.pbuild.cfg) which
> said things like> * to build 16-bit x86 code from .nasm sources ... [...]
> * to build 16-bit x86 code from .c sources ... [...]

	How does this differ [in an interesting way] from a target

   x86-16code: boot.nasm body.o
           ...
           ...

in a "makefile"?  You still seem to me to be re-inventing wheels.
Your new wheels may be just a little smoother than the old ones, at
least for your own purposes, but unless your new facility becomes
widespread this will be "private grief";  and there is nothing
stopping you writing your own "makefile"s in a way that conforms to
your ideals of using only a few [and transparent] commands.

-- 
Andy Walker,
Nottingham.

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Compiling and linking code from different places in the file system James Harris <james.harris.1@gmail.com> - 2018-03-01 14:40 +0000
  Re: Compiling and linking code from different places in the file system bartc <bc@freeuk.com> - 2018-03-01 14:55 +0000
    Re: Compiling and linking code from different places in the file system James Harris <james.harris.1@gmail.com> - 2018-03-02 21:05 +0000
      Re: Compiling and linking code from different places in the file system bartc <bc@freeuk.com> - 2018-03-03 01:18 +0000
        Re: Compiling and linking code from different places in the file system James Harris <james.harris.1@gmail.com> - 2018-03-09 01:03 +0000
      Re: Compiling and linking code from different places in the file system Rod Pemberton <NoEmail@trraxvfeqa.prg> - 2018-03-06 06:40 -0500
        Re: Compiling and linking code from different places in the file system James Harris <james.harris.1@gmail.com> - 2018-03-06 21:10 +0000
          Re: Compiling and linking code from different places in the file system Rod Pemberton <NoEmail@trraxvfeqa.prg> - 2018-03-07 06:58 -0500
            Re: Compiling and linking code from different places in the file system James Harris <james.harris.1@gmail.com> - 2018-03-09 01:23 +0000
              Re: Compiling and linking code from different places in the file system Rod Pemberton <NoEmail@trraxvfeqa.prg> - 2018-03-09 02:28 -0500
                Re: Compiling and linking code from different places in the file system Rod Pemberton <NoEmail@trraxvfeqa.prg> - 2018-03-09 02:44 -0500
                Re: Compiling and linking code from different places in the file system James Harris <james.harris.1@gmail.com> - 2018-03-09 23:26 +0000
                Re: Compiling and linking code from different places in the file system Rod Pemberton <NoEmail@trraxvfeqa.prg> - 2018-03-11 07:44 -0400
                Re: Compiling and linking code from different places in the file system James Harris <james.harris.1@gmail.com> - 2018-03-12 21:59 +0000
                Re: Compiling and linking code from different places in the file system Rod Pemberton <NoEmail@trraxvfeqa.prg> - 2018-03-14 01:45 -0400
                Re: Compiling and linking code from different places in the file system James Harris <james.harris.1@gmail.com> - 2018-03-14 10:59 +0000
      Re: Compiling and linking code from different places in the file system Rod Pemberton <NoEmail@trraxvfeqa.prg> - 2018-03-06 06:40 -0500
        Re: Compiling and linking code from different places in the file system James Harris <james.harris.1@gmail.com> - 2018-03-06 21:20 +0000
          Re: Compiling and linking code from different places in the file system Rod Pemberton <NoEmail@trraxvfeqa.prg> - 2018-03-07 06:58 -0500
            Re: Compiling and linking code from different places in the file system James Harris <james.harris.1@gmail.com> - 2018-03-09 10:30 +0000
  Re: Compiling and linking code from different places in the file system "James R. Kuyper" <jameskuyper@verizon.net> - 2018-03-01 11:11 -0500
    Re: Compiling and linking code from different places in the file system "James R. Kuyper" <jameskuyper@verizon.net> - 2018-03-01 13:51 -0500
    Re: Compiling and linking code from different places in the file system James Harris <james.harris.1@gmail.com> - 2018-03-03 09:48 +0000
  Re: Compiling and linking code from different places in the file system James Harris <james.harris.1@gmail.com> - 2018-03-03 12:25 +0000
    Re: Compiling and linking code from different places in the file system bartc <bc@freeuk.com> - 2018-03-03 15:32 +0000
      Re: Compiling and linking code from different places in the file system Jorgen Grahn <grahn+nntp@snipabacken.se> - 2018-03-04 07:52 +0000
      Re: Compiling and linking code from different places in the file system James Harris <james.harris.1@gmail.com> - 2018-03-04 08:43 +0000
        Re: Compiling and linking code from different places in the file system Jorgen Grahn <grahn+nntp@snipabacken.se> - 2018-03-05 07:58 +0000
          Re: Compiling and linking code from different places in the file system James Harris <james.harris.1@gmail.com> - 2018-03-06 21:37 +0000
            Re: Compiling and linking code from different places in the file system Jorgen Grahn <grahn+nntp@snipabacken.se> - 2018-03-07 21:02 +0000
        Re: Compiling and linking code from different places in the file system bartc <bc@freeuk.com> - 2018-03-05 15:29 +0000
          Re: Compiling and linking code from different places in the file system rugxulo@gmail.com - 2018-03-06 18:23 -0800
          Re: Compiling and linking code from different places in the file system James Harris <james.harris.1@gmail.com> - 2018-03-07 04:54 +0000
            Re: Compiling and linking code from different places in the file system Robert Wessel <robertwessel2@yahoo.com> - 2018-03-07 00:33 -0600
              Re: Compiling and linking code from different places in the file system James Harris <james.harris.1@gmail.com> - 2018-03-07 09:55 +0000
              Re: Compiling and linking code from different places in the file system bartc <bc@freeuk.com> - 2018-03-07 17:29 +0000
  Re: Compiling and linking code from different places in the file system Rod Pemberton <NoEmail@trraxvfeqa.prg> - 2018-03-06 06:39 -0500
    Re: Compiling and linking code from different places in the file system James Harris <james.harris.1@gmail.com> - 2018-03-07 10:44 +0000
      Re: Compiling and linking code from different places in the file system Rod Pemberton <NoEmail@trraxvfeqa.prg> - 2018-03-07 06:57 -0500
        Re: Compiling and linking code from different places in the file system James Harris <james.harris.1@gmail.com> - 2018-03-09 10:28 +0000
          Re: Compiling and linking code from different places in the file system Rod Pemberton <NoEmail@trraxvfeqa.prg> - 2018-03-11 07:44 -0400
            Re: Compiling and linking code from different places in the file system James Harris <james.harris.1@gmail.com> - 2018-03-12 22:44 +0000
              Re: Compiling and linking code from different places in the file system Rod Pemberton <NoEmail@trraxvfeqa.prg> - 2018-03-14 01:47 -0400
                Re: Compiling and linking code from different places in the file system bartc <bc@freeuk.com> - 2018-03-14 10:23 +0000
                Re: Compiling and linking code from different places in the file system "Pascal J. Bourguignon" <pjb@informatimago.com> - 2018-03-14 11:30 +0100
                Re: Compiling and linking code from different places in the file system bartc <bc@freeuk.com> - 2018-03-14 11:30 +0000
                Re: Compiling and linking code from different places in the file system "Pascal J. Bourguignon" <pjb@informatimago.com> - 2018-03-14 13:30 +0100
                Re: Compiling and linking code from different places in the file system bartc <bc@freeuk.com> - 2018-03-14 14:32 +0000
                Re: Compiling and linking code from different places in the file system "Pascal J. Bourguignon" <pjb@informatimago.com> - 2018-03-14 16:01 +0100
                Re: Compiling and linking code from different places in the file system bartc <bc@freeuk.com> - 2018-03-14 19:28 +0000
                Re: Compiling and linking code from different places in the file system "Pascal J. Bourguignon" <pjb@informatimago.com> - 2018-03-15 08:59 +0100
                Re: Compiling and linking code from different places in the file system bartc <bc@freeuk.com> - 2018-03-15 19:21 +0000
                Re: Compiling and linking code from different places in the file system "Pascal J. Bourguignon" <pjb@informatimago.com> - 2018-03-16 08:08 +0100
                Re: Compiling and linking code from different places in the file system bartc <bc@freeuk.com> - 2018-03-16 11:12 +0000
                Re: Compiling and linking code from different places in the file system "Pascal J. Bourguignon" <pjb@informatimago.com> - 2018-03-16 16:45 +0100
                Re: Compiling and linking code from different places in the file system Andy Walker <anw@cuboid.co.uk> - 2018-03-16 16:09 +0000
                Re: Compiling and linking code from different places in the file system "Pascal J. Bourguignon" <pjb@informatimago.com> - 2018-03-16 18:42 +0100
                Re: Compiling and linking code from different places in the file system bartc <bc@freeuk.com> - 2018-03-17 18:32 +0000
                Re: Compiling and linking code from different places in the file system "Pascal J. Bourguignon" <pjb@informatimago.com> - 2018-03-17 21:37 +0100
                Re: Compiling and linking code from different places in the file system bartc <bc@freeuk.com> - 2018-03-17 21:00 +0000
                Re: Compiling and linking code from different places in the file system "Pascal J. Bourguignon" <pjb@informatimago.com> - 2018-03-18 11:39 +0100
                Re: Compiling and linking code from different places in the file system bartc <bc@freeuk.com> - 2018-03-18 12:29 +0000
                Re: Compiling and linking code from different places in the file system Andy Walker <anw@cuboid.co.uk> - 2018-03-19 13:38 +0000
                Re: Compiling and linking code from different places in the file system James Harris <james.harris.1@gmail.com> - 2018-03-20 05:40 +0000
                Re: Compiling and linking code from different places in the file system Andy Walker <anw@cuboid.co.uk> - 2018-03-20 11:05 +0000
                Re: Compiling and linking code from different places in the file system James Harris <james.harris.1@gmail.com> - 2018-03-21 06:03 +0000
                Re: Compiling and linking code from different places in the file system Andy Walker <anw@cuboid.co.uk> - 2018-03-21 18:51 +0000
                Re: Compiling and linking code from different places in the file system James Harris <james.harris.1@gmail.com> - 2018-03-21 19:55 +0000
                Re: Compiling and linking code from different places in the file system Andy Walker <anw@cuboid.co.uk> - 2018-03-23 18:03 +0000
                Re: Compiling and linking code from different places in the file system James Harris <james.harris.1@gmail.com> - 2018-03-23 20:13 +0000
                Re: Compiling and linking code from different places in the file system Andy Walker <anw@cuboid.co.uk> - 2018-03-24 01:30 +0000
                Re: Compiling and linking code from different places in the file system James Harris <james.harris.1@gmail.com> - 2018-03-24 16:48 +0000
                Re: Compiling and linking code from different places in the file system Andy Walker <anw@cuboid.co.uk> - 2018-03-26 19:42 +0100
                Re: Compiling and linking code from different places in the file system James Harris <james.harris.1@gmail.com> - 2018-03-26 22:35 +0100
                Re: Compiling and linking code from different places in the file system "Pascal J. Bourguignon" <pjb@informatimago.com> - 2018-03-24 12:01 +0100
                Re: Compiling and linking code from different places in the file system "Pascal J. Bourguignon" <pjb@informatimago.com> - 2018-03-23 20:58 +0100
                Re: Compiling and linking code from different places in the file system "Pascal J. Bourguignon" <pjb@informatimago.com> - 2018-03-23 20:49 +0100
                Re: Compiling and linking code from different places in the file system bartc <bc@freeuk.com> - 2018-03-20 18:37 +0000
                Re: Compiling and linking code from different places in the file system Andy Walker <anw@cuboid.co.uk> - 2018-03-21 19:33 +0000
                Re: Compiling and linking code from different places in the file system bartc <bc@freeuk.com> - 2018-03-21 20:35 +0000
                Re: Compiling and linking code from different places in the file system "Pascal J. Bourguignon" <pjb@informatimago.com> - 2018-03-23 21:10 +0100
                Re: Compiling and linking code from different places in the file system Marco van de Voort <marcov@toad.stack.nl> - 2018-04-19 06:47 +0000
                Re: Compiling and linking code from different places in the file system Andy Walker <anw@cuboid.co.uk> - 2018-03-27 00:58 +0100
                Re: Compiling and linking code from different places in the file system bartc <bc@freeuk.com> - 2018-03-30 19:55 +0100
                Re: Compiling and linking code from different places in the file system Marco van de Voort <marcov@toad.stack.nl> - 2018-04-19 06:49 +0000
                Re: Compiling and linking code from different places in the file system "Pascal J. Bourguignon" <pjb@informatimago.com> - 2018-03-23 21:04 +0100
                Re: Compiling and linking code from different places in the file system bartc <bc@freeuk.com> - 2018-03-23 21:54 +0000
                Re: Compiling and linking code from different places in the file system "Pascal J. Bourguignon" <pjb@informatimago.com> - 2018-03-24 11:22 +0100
                Re: Compiling and linking code from different places in the file system bartc <bc@freeuk.com> - 2018-03-24 12:12 +0000
                Re: Compiling and linking code from different places in the file system "Pascal J. Bourguignon" <pjb@informatimago.com> - 2018-03-24 13:15 +0100
                Re: Compiling and linking code from different places in the file system "Pascal J. Bourguignon" <pjb@informatimago.com> - 2018-03-24 13:36 +0100
                Re: Compiling and linking code from different places in the file system bartc <bc@freeuk.com> - 2018-03-24 14:52 +0000
                Re: Compiling and linking code from different places in the file system Marco van de Voort <marcov@toad.stack.nl> - 2018-04-19 11:06 +0000
                Re: Compiling and linking code from different places in the file system David Brown <david.brown@hesbynett.no> - 2018-03-14 16:52 +0100
                Re: Compiling and linking code from different places in the file system bartc <bc@freeuk.com> - 2018-03-14 19:38 +0000
                Re: Compiling and linking code from different places in the file system "Pascal J. Bourguignon" <pjb@informatimago.com> - 2018-03-15 09:00 +0100
                Re: Compiling and linking code from different places in the file system bartc <bc@freeuk.com> - 2018-03-15 12:54 +0000
                Re: Compiling and linking code from different places in the file system James Harris <james.harris.1@gmail.com> - 2018-03-14 11:18 +0000
                Re: Compiling and linking code from different places in the file system "Pascal J. Bourguignon" <pjb@informatimago.com> - 2018-03-14 13:52 +0100
                Re: Compiling and linking code from different places in the file system Rod Pemberton <NoEmail@trraxvfeqa.prg> - 2018-03-15 06:29 -0400
                Re: Compiling and linking code from different places in the file system James Harris <james.harris.1@gmail.com> - 2018-03-15 20:37 +0000
                Re: Compiling and linking code from different places in the file system Rod Pemberton <NoEmail@trraxvfeqa.prg> - 2018-03-17 11:51 -0400
                Re: Compiling and linking code from different places in the file system James Harris <james.harris.1@gmail.com> - 2018-03-20 06:31 +0000
                Re: Compiling and linking code from different places in the file system Rod Pemberton <NoEmail@trraxvfeqa.prg> - 2018-03-20 17:14 -0400
                Re: Compiling and linking code from different places in the file system James Harris <james.harris.1@gmail.com> - 2018-03-21 07:10 +0000
                Re: Compiling and linking code from different places in the file system Rod Pemberton <NoEmail@trraxvfeqa.prg> - 2018-03-24 01:38 -0400
                Re: Compiling and linking code from different places in the file system James Harris <james.harris.1@gmail.com> - 2018-03-24 16:10 +0000
                Re: Compiling and linking code from different places in the file system Rod Pemberton <NoEmail@trraxvfeqa.prg> - 2018-03-24 20:05 -0400
                Re: Compiling and linking code from different places in the file system James Harris <james.harris.1@gmail.com> - 2018-03-25 16:55 +0100
  Re: Compiling and linking code from different places in the file system "Pascal J. Bourguignon" <pjb@informatimago.com> - 2018-03-14 13:39 +0100

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