Tiny Core Linux
General TC => General TC Talk => Topic started by: medvedm on May 09, 2011, 10:05:53 AM
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Looking for advice about how to take stuff out of the TC base install that I don't need with the express purpose of making the filesize of the bzImage and tinycore.gz smaller. I'm sure there are drivers and things I can remove from the kernel, so I'm going to start down that path, but if anyone has some sage advice, I'd love it.
I need drivers for all the devices on this board:
http://www.lippertembedded.com/en/lipperts-cool-xpressrunner-gs45.html
as well as the Ethernet chips on this guy:
http://www.rtd.com/PC104/UM/network/LAN25222.htm
But beyond that nothing else.
M
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You can recompile the source, but then it will not be portable.
Picking what to include will be your job, as will troubleshooting.
Unless you know how do do this, I suggest you do not.
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Portability isn't a goal... I'm looking to build a smaller image, which I understand makes it specific to the board I showed above. That is OK, in fact that is exactly what I'm trying to do. For example... I don't need any wireless, printer support, etc. I'm willing to trade that for file size.
The instructions listed in the custom kernel wiki page are out of date and not really descriptive enough. See:
http://wiki.tinycorelinux.net/wiki:custom_kernel
For example, I'm pretty sure the FTP link is incorrect and I can't seem to figure out which files I would need to get from http://distro.ibiblio.org/tinycorelinux/3.x/release/src/ to successfully build TC.
Can I remove modules out of the filesystem when doing an ezremaster? That seems like a really error prone way to do it.
M
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I've posted a script in the programming section, which remasters with only needed modules - but it requires to be run from the system, for which it should be created ;)
Other than that you only need the compiletc.tcz extension, download the linux-2.6.33.3-patched.tbz2 from http://distro.ibiblio.org/tinycorelinux/3.x/release/src/kernel/ and also config-2.6.33.3-tinycore, extract the first, copy the second to .config within the folder and you're ready to build. of course you can edit .config, you can also upx bzImage to reduce size, there are always options but most of them are already mentioned somewhere in the forum ;-)
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I had forgotten about Gutmensch's script.
That would be easiest.
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IME upx'ed kernel images do not work with all setups. Also it may depend which options are used with upx.
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Looking for advice about how to take stuff out of the TC base install that I don't need with the express purpose of making the filesize of the bzImage and tinycore.gz smaller.
Do you have a specific size requirement or are you looking to just optimize it?
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No specific requirement, I suppose under 8MB would be ideal. The smaller the better w/o losing capability.
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Then it's good to start with TC, since there is no wireless to remove in the base ;)
You can get rather good savings just removing unused modules with gutmensch's script. If you still need more, sort all files by size and remove the largest ones you don't need (find usr/ -type f -exec ls -l '{}' \; | sort -nk5). Fluff is rather big actually, now that I see it that high in the list.
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:-[
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Sorry. :) Everything's relative, fluff's still much smaller than other file managers.
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Maybe medvedm does not need any file manager in the remaster... kiosk mode?
But Curaga started me thinking of ways to strip Fluff file manager down a good bit more... :o
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For me fluff has an excellent value-per-byte ratio, so I would rather have even features added at same ratio.
Giving priority to stripping what is really redundant, e.g. to particular hardware, is a good approach, and the script of gutmensch is very easy and fast.