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devel / comp.lang.xharbour / Multicore compile mode

SubjectAuthor
* Multicore compile modeEnrico Maria Giordano
`* Re: Multicore compile modeDlzc
 `- Re: Multicore compile modeEnrico Maria Giordano

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Multicore compile mode

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From: e.m.giordano@emagsoftware.it (Enrico Maria Giordano)
Newsgroups: comp.lang.xharbour
Subject: Multicore compile mode
Date: Sun, 31 Dec 2023 12:08:39 +0100
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 by: Enrico Maria Giordan - Sun, 31 Dec 2023 11:08 UTC

Both MSC and BCC CLANG have a very very fast C compile mode that uses
multicore CPU (-MP with MSC and --jobs=0 -output-dir. with BCC CLANG).
That is wonderful but it works if there is only one compiler run for
more that one C modules. Unfortunately our build system seems to invoke
the compiler for each C module. I wonder if it could be possible to
change this and compile more C modules with one single compiler run.
This way the whole build operation would be much much faster. What do
you think?

--
Enrico Maria Giordano

http://www.emagsoftware.it
http://www.emagsoftware.it/emgmusic
http://www.emagsoftware.it/spectrum
http://www.emagsoftware.it/tbosg

Re: Multicore compile mode

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Subject: Re: Multicore compile mode
From: turkeyheadedmutha@gmail.com (Dlzc)
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 by: Dlzc - Sun, 31 Dec 2023 13:53 UTC

Dear Enrico:

On Sunday, December 31, 2023 at 5:08:42 AM UTC-6, Enrico Maria Giordano wrote:
> Both MSC and BCC CLANG have a very very fast C compile mode that uses
> multicore CPU (-MP with MSC and --jobs=0 -output-dir. with BCC CLANG).
> That is wonderful but it works if there is only one compiler run for
> more that one C modules. Unfortunately our build system seems to invoke
> the compiler for each C module. I wonder if it could be possible to
> change this and compile more C modules with one single compiler run.
> This way the whole build operation would be much much faster. What do
> you think?

I think you have done miracles here, and can walk on water on a really calm day.

Honestly, how many times does "Joe Programmer" compile the entire source, and how many people have hundreds of thousands of lines of xBase / assembly code to compile "clean" every time. "Pearls before swine" comes to mind. Your effort will be for your edification, others will likely notice no significant difference.

And of course I worry about dependency, what if process #2 needs the results of process #4 before it is done? But this is compiling, not linking...

David A. Smith

Re: Multicore compile mode

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From: e.m.giordano@emagsoftware.it (Enrico Maria Giordano)
Newsgroups: comp.lang.xharbour
Subject: Re: Multicore compile mode
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 by: Enrico Maria Giordan - Sun, 31 Dec 2023 14:27 UTC

Il 31/12/2023 14:53, Dlzc ha scritto:

> Honestly, how many times does "Joe Programmer" compile the entire source, and how many people have hundreds of thousands of lines of xBase / assembly code to compile "clean" every time. "Pearls before swine" comes to mind. Your effort will be for your edification, others will likely notice no significant difference.

You have a point. I only asked how difficult it would be.

--
Enrico Maria Giordano

http://www.emagsoftware.it
http://www.emagsoftware.it/emgmusic
http://www.emagsoftware.it/spectrum
http://www.emagsoftware.it/tbosg

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