Tiny Core Linux
Tiny Core Base => Micro Core => Topic started by: ulfr on August 22, 2020, 06:31:12 PM
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hi guys
how do you build core.gz from scratch
ulfr
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Hi ulfr
Do really want to build core.gz from scratch, or do you just want to modify the contents?
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thanks for your reply
and all your work - tinycore is the best designed distro there is
no i know how to modify the contents of core.gz
i would like to know how you guys build core.gz
ulfr
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Hi ulfr
core.gz can be created by combining rootfs.gz and modules.gz like this:
cat rootfs.gz modules.gz > core.gzYou are probably aware that rootfs.gz and modules.gz can be found under release/distribution_files/ for each architecture:
http://tinycorelinux.net/11.x/x86/release/distribution_files/
modules.gz is created by the sorter.sh script available from Github:
https://github.com/tinycorelinux/sorter
After running make modules and make modules_install you use sorter.sh to create modules.sh and all the kernel module
extensions. You can find the instructions included in these kernel compile instructions:
http://forum.tinycorelinux.net/index.php/topic,23272.msg147325.html#msg147325
There may be a script to create rootfs.gz or they might just unpack/repack the existing rootfs.gz. I don't know, but I don't
think it changes very often. You can create a root directory manually in some work directory, or you can modify an existing one.
To unpack:
mkdir tempdir
cd tempdir
zcat /path/to/existing/rootfs.gz | sudo cpio -i
To repack:
sudo find . | sudo cpio -o -H newc | gzip > /path/to/new/rootfs.gz
Found here:
http://forum.tinycorelinux.net/index.php/topic,22398.msg140327.html#msg140327
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thank you very much
i was not aware of where things were or how they were built
i will check things out
fascinating stuff
the more one learns about tinycore the more amazed and impressed one is
ulfr
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i would like to now how rootfsgz is built
because it contains busybox it must have to be updated regularly
that would be one of the final pieces
ulfr
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Hi ulfr
As I said, I don't know the details of how rootfs.gz is built. There is a busybox build script located here:
http://tinycorelinux.net/11.x/x86/release/src/busybox/
It does appear to do some kind of install, though I can't tell if it also creates all of the symlinks in /bin and /sbin.
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than you so much rich
you have been a great help
i will look at your link
ulfr
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hi rich
i note that there is a script called compile tc11 x86
in /releases/src/toolchain/
which appears to be the script that compiles core.gz
(if you want to) take a look and tell me what you think
ulfr
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Hi ulfr
I think that script just compiles all of the source packages in that directory.
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It does appear to do some kind of install, though I can't tell if it also creates all of the symlinks in /bin and /sbin.
Yes, busybox install creates all of the symlinks.
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I think that script just compiles all of the source packages in that directory.
It's basically the build notes for the new toolchain, which is then copied into rootfs.gz
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it has a lot of make install
wouldn't that put the completed binary in the proper directory after it was compiled
ulfr
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so what is the sequence of the scripts
ulfr
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It's not a script, it is just build notes - you start at the beginning and work your way to the end ;)
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thank you very much guys for all your time
you have set me on the path
i now have a good general idea of where to look and how things are done
i'll poke around and see if i can learn a little more
and thanks for making such a great distro
its my favorite
ulfr
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It's not a script, it is just build notes - you start at the beginning and work your way to the end ;)
Hi Juanito, in summary, there is no build script for rootfs.gz even for the current latest TC 16 x86. Is that right?
For example, if one wants to rebuild rootfs.gz, let's say to change --enable-kernel=6.1.2 to --enable-kernel=4.4.302, one would have to
- read the http://tinycorelinux.net/16.x/x86/release/src/toolchain/compile_tc16_x86
- infer the commands to run
- manually run them until reaching the end of the build notes (fixing the errors if some show up or filling the gaps if there are any)
- probably running an additional repacking to generate the rootfs.gz command because the build notes end with "[remove files to match base/extension setup]"
Would that be it?
Also, thank you Juanito everyone for tinycore! It's fascinating!
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probably running an additional repacking to generate the rootfs.gz command because the build notes end with "remove files to match base/extension setup"
Not exactly, the "remove files to match base/extension setup" refers to the chroot environment.
To update rootfs.gz, you need to overwrite the existing files with the newly built files (after first stripping them) like this: mkdir /tmp/extract
cd /tmp/extract
zcat /tmp/rootfs.gz | sudo cpio -i -H newc -d
rm /tmp/rootfs.gz
[overwrite/update existing files]
cd /tmp/extract
find | sudo cpio -o -H newc | gzip -2 > ../rootfs.gz
cd /tmp
advdef -z4 rootfs.gz
Would that be it?
Yes :)
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Hi Juanito,
I'm interested to obtain copies of
binutils_usr.tce.list
gcc_usr_remove.tce.list
gcc_local_remove.tce.list
They are referenced in http://tinycorelinux.net/16.x/x86/release/src/toolchain/compile_tc16_x86. Are they hosted anywhere? Are there any other .tce.list files which were used in making TC16 x86? I am interested in those too.
Also, thank you for your last reply!
Oh, and the compile_tc16_x86 notes are great! I was able to compile roughly 1/3 of the required sources so far. I'm automating the steps in a couple of .sh scripts. I plan to release those scripts once I have a working result.
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binutils_usr.tce.list is created by:
touch mymarker
sudo make install
sudo find / -not -type 'd' -cnewer mymarker | grep -v "\/proc\/" | grep -v "^\/sys\/" | tee files
vi files (remove any obviously unneeded files)
mv files binutils_usr.tce.list
The other two were made by a similar process and then editing to leave only the files I wanted to remove.
Sorry, but I didn't keep the lists :(
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No worries :)
Thanks for your answer! Very interesting!
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I wrote a couple of scripts which I released here https://github.com/linic/tcc
I was able to compile all the sources mentioned in compile_tc16_x86 (http://tinycorelinux.net/16.x/x86/release/src/toolchain/compile_tc16_x86) and busybox (using the compile notes in 15.x http://tinycorelinux.net/15.x/x86/release/src/busybox/compile_busybox).
I changed some flags. I think I mentioned them all in the README.md (https://github.com/linic/tcc/blob/main/README.md)
I'm not done with repacking rootfs.gz, but I thought it was a nice state to share it.