Hey!

I'd like to compile all of DVD-1 myself but using `-Oz` to optimize for binary size rather than speed. How do I do that? Where do I start? I could only find infos on how to build DVD-1 yourself using existing binary packages...

Thank you!

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On Wed, 23 Apr 2025 10:58:52 +0000
Nils <tuxifan@posteo.de> wrote:

Hey!

I'd like to compile all of DVD-1 myself but using `-Oz` to optimize
for binary size rather than speed. How do I do that? Where do I
start? I could only find infos on how to build DVD-1 yourself using
existing binary packages...

How else can you do it? A working compiler is binary code, as are its
auxiliary packages. To compile anything you must use pre-compiled
binaries.

It's a bootstrap job. You start by using a running system to compile a
compiler and the other bits it needs from source code, and eventually, a kernel. You finally reach a position where you can switch to using
your compiler and your new kernel to recompile what you've done so far,
and then you can go on with all newly-compiled binaries and build a
complete system. It's not a trivial job.

See here for details of such a process:
https://www.linuxfromscratch.org/

This may also help:
https://jamesbrind.uk/posts/linux-from-scratch/

I did this a couple of times soon after the project began, and learned
quite a lot. The automation systems were just being talked about then,
and of course my computer was quite slow. A couple of scripts that I
still use date from that time.

--
Joe

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On Wed, Apr 23, 2025 at 01:26:44PM +0100, Joe wrote:

On Wed, 23 Apr 2025 10:58:52 +0000
Nils <tuxifan@posteo.de> wrote:

Hey!

I'd like to compile all of DVD-1 myself but using `-Oz` to optimize
for binary size rather than speed. How do I do that? Where do I
start? I could only find infos on how to build DVD-1 yourself using existing binary packages...

How else can you do it? A working compiler is binary code, as are its auxiliary packages. To compile anything you must use pre-compiled
binaries.

It's a bootstrap job [...]

For a more Debian specific link, see

https://wiki.debian.org/DebianBootstrap

Cheers
--
t

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On Wed, 23 Apr 2025, Joe wrote:

On Wed, 23 Apr 2025 10:58:52 +0000
Nils <tuxifan@posteo.de> wrote:

Hey!

I'd like to compile all of DVD-1 myself but using `-Oz` to optimize
for binary size rather than speed. How do I do that? Where do I
start? I could only find infos on how to build DVD-1 yourself using
existing binary packages...

How else can you do it? A working compiler is binary code, as are its auxiliary packages. To compile anything you must use pre-compiled
binaries.

It's a bootstrap job. You start by using a running system to compile a

That's not how I read it.

Off the top of my head I don't know how to change the compile options, DEB_BUILD_OPTIONS perhaps?

But the OP should start with dpkg-buildpackage to rebuild individual
oackages.

Once everything is rebuilt, assemble the DVD as normal

There are some possible complications, I'd be inclined to build each
package in a container and only install the build deps fir that package
- some configure scripts might otherwise detect things they shouldn't
which might then mess with install depends.

Hope the op has a lot of computing resources...

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On Wednesday, April 23, 2025 8:48:01 PM Central European Summer Time Darac Marjal wrote:

Do you need the DVD creation, or are you just looking for the
re-compiled packages? If the latter, perhaps apt-build (https://manpages.debian.org/testing/apt-build/apt-build.1.en.html)
might be of interest to you?

Does this apply to Debian like that as well?Does this apply to Debian like that as well? This looks a bit Gentoo specific, but I am not too well with kernel building. I've never done it myself.

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On Wednesday, April 23, 2025 11:10:29 PM Central European Summer Time Tim Woodall wrote:

Hope the op has a lot of computing resources...

Well, only a single computer, but do you think this would suffice?

Processors: 32 × AMD Ryzen 9 7950X 16-Core Processor
Memory: 62.5 GiB of RAM

Thank you

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On Wednesday, April 23, 2025 2:30:45 PM Central European Summer Time tomas@tuxteam.de wrote:

For a more Debian specific link, see

https://wiki.debian.org/DebianBootstrap

Cheers

Yes! This is exactly what I was looking for! Thank you :-)

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