Groups > comp.lang.python > #197359

Re: Python recompile

From	bart <bc@freeuk.com>
Newsgroups	comp.lang.c, comp.lang.python
Subject	Re: Python recompile
Date	2025-03-07 21:33 +0000
Organization	A noiseless patient Spider
Message-ID	<vqfoni$3nugk$2@dont-email.me> (permalink)
References	(12 earlier) <20250304092827.708@kylheku.com> <vq7g1p$1vmg5$1@dont-email.me> <vq94dt$2boso$1@dont-email.me> <vqcsk7$23bfo$1@paganini.bofh.team> <vqfoam$3nnbq$4@dont-email.me>

Cross-posted to 2 groups.

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On 07/03/2025 21:26, Lawrence D'Oliveiro wrote:
> On Thu, 6 Mar 2025 19:21:45 -0000 (UTC), Waldek Hebisch wrote:
> 
>> Per platform Makefile-s do not scale when one wants to support multiple
>> system and multiple configurations (there is exponential growth of
>> possible combinations).  And even of single configuration for supposedly
>> single system like Linux there are troubles.
>> In one project there was someting like 20 Makefile.linux_x files where x
>> represented one Linux flavour.  Yet regularly somebody would come and
>> say: "build fails on my Linux x.y.z".  If enough information was
>> provided new Makefile was added, or possibly some similar Makefile was
>> modified to cover more cases.
> 
> Can you offer more details on the project in question? I ask because
> there are things that can be done in GNU Makefiles to deal more
> dynamically with environmental differences in some simpler cases,
> without resorting to a full-on meta-build system like Autotools or
> CMake, and perhaps the maintainers of this project aren’t aware of
> that.
> 
> Here’s a simple example, building an extension module for Python:
> 
>      CFLAGS=-g $(shell python3-config --includes) -fPIC -Wall -Wno-switch -Wno-parentheses
> 
>      gxscript_lexer.so : gxscript_lexer.o
>          $(CC) $^ $(shell python3-config --ldflags) -shared -o $@
> 
>      gxscript_lexer.o : gxscript_lexer.c
> 
>      clean :
>          rm -f gxscript_lexer.so gxscript_lexer.o
>          rm -rf __pycache__
> 
>      .PHONY : clean
> 
> Note how it uses the “python3-config” command to figure out the right
> flags (including file/directory locations) for compilation and
> linking. So it doesn’t have to know that the libraries are in /usr/lib
> on one system, and /usr/local/lib on another.

So how does 'python3-config' know where this stuff is?

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                Re: Python recompile Richard Heathfield <rjh@cpax.org.uk> - 2025-03-03 17:25 +0000
                Re: Python recompile Muttley@DastardlyHQ.org - 2025-03-04 08:32 +0000
                Re: Python recompile Richard Heathfield <rjh@cpax.org.uk> - 2025-03-04 08:56 +0000
                Re: Python recompile Muttley@DastardlyHQ.org - 2025-03-04 09:23 +0000
                Re: Python recompile Richard Heathfield <rjh@cpax.org.uk> - 2025-03-04 09:57 +0000
                Re: Python recompile Muttley@DastardlyHQ.org - 2025-03-04 10:03 +0000
                Re: Python recompile Richard Heathfield <rjh@cpax.org.uk> - 2025-03-04 10:25 +0000
                Re: Python recompile Muttley@DastardlyHQ.org - 2025-03-04 11:19 +0000
                Re: Python recompile Kaz Kylheku <643-408-1753@kylheku.com> - 2025-03-04 17:42 +0000
                Re: Python recompile bart <bc@freeuk.com> - 2025-03-04 18:16 +0000
                Re: Python recompile Muttley@DastardlyHQ.org - 2025-03-05 09:10 +0000
                Re: Python recompile antispam@fricas.org (Waldek Hebisch) - 2025-03-06 19:21 +0000
                Re: Python recompile Muttley@DastardlyHQ.org - 2025-03-07 09:53 +0000
                Re: Python recompile Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-03-07 21:26 +0000
                Re: Python recompile bart <bc@freeuk.com> - 2025-03-07 21:33 +0000
                Re: Python recompile antispam@fricas.org (Waldek Hebisch) - 2025-03-10 14:39 +0000
                Re: Python recompile Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-03-06 03:16 +0000
                Re: Python recompile James Kuyper <jameskuyper@alumni.caltech.edu> - 2025-03-04 19:12 -0500
                Re: Python recompile gazelle@shell.xmission.com (Kenny McCormack) - 2025-03-03 23:42 +0000
                Re: Python recompile geodandw <geodandw@gmail.com> - 2025-03-03 13:29 -0500
                Re: Python recompile James Kuyper <jameskuyper@alumni.caltech.edu> - 2025-03-03 16:52 -0500
              Re: Python recompile Richard Heathfield <rjh@cpax.org.uk> - 2025-03-03 17:19 +0000
                Re: Python recompile geodandw <geodandw@gmail.com> - 2025-03-03 13:33 -0500
                Re: Python recompile Richard Heathfield <rjh@cpax.org.uk> - 2025-03-03 19:15 +0000
                Re: Python recompile geodandw <geodandw@gmail.com> - 2025-03-03 18:51 -0500
                Re: Python recompile Kaz Kylheku <643-408-1753@kylheku.com> - 2025-03-04 00:49 +0000
                Re: Python recompile Richard Heathfield <rjh@cpax.org.uk> - 2025-03-04 02:29 +0000
                Re: Python recompile David Brown <david.brown@hesbynett.no> - 2025-03-04 09:12 +0100
                Re: Python recompile Richard Heathfield <rjh@cpax.org.uk> - 2025-03-04 11:33 +0000
                Re: Python recompile Muffley@DinkyHQ.org - 2025-03-04 12:00 +0000
                Re: Python recompile Michael S <already5chosen@yahoo.com> - 2025-03-04 15:31 +0200
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                Re: Python recompile Kaz Kylheku <643-408-1753@kylheku.com> - 2025-03-04 18:06 +0000
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                Re: Python recompile Richard Heathfield <rjh@cpax.org.uk> - 2025-03-06 07:32 +0000
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          Re: Python recompile doctor@doctor.nl2k.ab.ca (The Doctor) - 2025-03-03 16:12 +0000
    Re: Python recompile Left Right <olegsivokon@gmail.com> - 2025-03-02 23:26 +0100
  Re: Python recompile antispam@fricas.org (Waldek Hebisch) - 2025-03-02 17:54 +0000
    Re: Python recompile Richard Heathfield <rjh@cpax.org.uk> - 2025-03-02 19:15 +0000
    Re: Python recompile James Kuyper <jameskuyper@alumni.caltech.edu> - 2025-03-02 13:38 -0500
      Re: Python recompile doctor@doctor.nl2k.ab.ca (The Doctor) - 2025-03-03 00:42 +0000
        Re: Python recompile doctor@doctor.nl2k.ab.ca (The Doctor) - 2025-03-03 00:46 +0000
        Re: Python recompile James Kuyper <jameskuyper@alumni.caltech.edu> - 2025-03-02 22:24 -0500
      Re: Python recompile antispam@fricas.org (Waldek Hebisch) - 2025-03-03 17:20 +0000
        Re: Python recompile Richard Heathfield <rjh@cpax.org.uk> - 2025-03-03 17:28 +0000
        Re: Python recompile James Kuyper <jameskuyper@alumni.caltech.edu> - 2025-03-03 12:57 -0500
        Re: Python recompile scott@slp53.sl.home (Scott Lurndal) - 2025-03-03 18:02 +0000
        Re: Python recompile bart <bc@freeuk.com> - 2025-03-03 19:37 +0000
  Re: Python recompile (Posting On Python-List Prohibited) Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-03-04 05:46 +0000

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