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# 18:27:06 |
armlighter |
good evening... |
# 18:27:50 |
armlighter |
when i want to build a toolchain, is it really necessary to download the whole kernel just for the headers? |
# 18:28:20 |
codyps |
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maxime |
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# 18:40:04 |
armlighter |
why can i only specify kernel headers <= 2.6.36? |
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armlighter |
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# 18:46:58 |
codyps |
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# 19:16:08 |
y_morin |
ar!) Yes we need the complete kernel to get headers, there is no separate download with just the headers. 2) The latest release is 1.18.0, and has kernel headers for linux 7.3 |
# 19:16:21 |
y_morin |
armlighter is gone, too bad. :-( |
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# 21:36:49 |
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# 21:53:12 |
lazzer |
What is the custom configuration file I can enter for eglibc? |
# 21:54:42 |
y_morin |
lazzer: If you don't know, then you don't need it. ;-) |
# 21:55:45 |
lazzer |
y_morin: I want to make eglibc smaller ;) |
# 21:55:55 |
y_morin |
lazzer: Then, look at the help entry for 'Use custom configuration file'. |
# 21:56:09 |
lazzer |
yeah, been there, but how do I create the config :S |
# 21:56:30 |
y_morin |
lazzer: "The configuration file options are described in detail in the option-groups.def file in the eglibc source directory." |
# 21:56:36 |
y_morin |
lazzer: have looked at that file? |
# 21:57:10 |
lazzer |
y_morin: no |
# 21:57:23 |
y_morin |
lazzer: Then you should. ;-) |
# 21:57:28 |
y_morin |
lazzer: Here it is for you: http://www.eglibc.org/cgi-bin/viewvc.cgi/trunk/libc/option-groups.def?revision=9803&view=markup |
# 21:57:37 |
smartin |
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# 21:58:20 |
lazzer |
y_morin: Do it require to use the trunke (to get the Kconfig patches)? |
# 21:58:31 |
lazzer |
I am using version 2.17 |
# 22:00:14 |
y_morin |
lazzer: It's been suported in eglibc since eglibc-2.5 |
# 22:00:18 |
lazzer |
oh :D |
# 22:00:23 |
lazzer |
will look at it, thanks :D |
# 22:00:33 |
lazzer |
is very new to eglibc.. :) |
# 22:00:42 |
lazzer |
just switching over from uClibc |
# 22:01:30 |
y_morin |
lazzer: You won't gain much by configuring eglibc; it is far less customisable than uClibc. |
# 22:01:41 |
y_morin |
lazzer: Why do you want to shrink it down? |
# 22:02:00 |
lazzer |
y_morin: Limit space on flash |
# 22:02:28 |
y_morin |
lazzer: A complete set of eglibc libs are roughly 2.5MiB. Are you that* |
# 22:02:38 |
y_morin |
... *that* short on space? |
# 22:03:10 |
y_morin |
curses his keyboard's Return key that is too near the 'Del' key... :-( |
# 22:05:05 |
lazzer |
y_morin: my image with eglibc is ~1.5MiB larger then the one with uClibc (compressed) |
# 22:05:30 |
lazzer |
y_morin: and yes, 2.5 MiB is really big ;) |
# 22:06:22 |
y_morin |
lazzer: That's not the question. The question is: how big is it compared to the rest of the filesystem image? 1% 10% 25% 50% ? If it's 1%, then there's no point in configuring it. |
# 22:06:34 |
lazzer |
12.5MiB total |
# 22:06:34 |
y_morin |
lazzer: It's all about _relative_ size. |
# 22:06:53 |
lazzer |
500k free |
# 22:07:02 |
y_morin |
lazzer: OK, roughly 20%. That the boundary at which it starts to make sense to optimise! ;-) |
# 22:07:09 |
lazzer |
;) |
# 22:07:24 |
y_morin |
lazzer: Well, I never ever tried to configure eglibc. You're the first to ask! |
# 22:07:49 |
lazzer |
y_morin: someone needs to be first :) |
# 22:07:58 |
y_morin |
lazzer: yes! ;-) |
# 22:08:11 |
y_morin |
lazzer: Any reason you can't stick with uClibc ? |
# 22:08:29 |
y_morin |
is really trying hard to avoid theix eglibc-configury stuff! ;-) |
# 22:08:34 |
lazzer |
y_morin: found this http://sourceware.org/ml/crossgcc/2012-10/msg00144.html |
# 22:08:37 |
y_morin |
*this... |
# 22:09:08 |
lazzer |
y_morin: Yes, we have had too many bugs that been related to *not* using standard C-library |
# 22:10:26 |
lazzer |
y_morin: and we want to keep our PPC32 and ARMs in the same C-library. |
# 22:11:15 |
y_morin |
lazzer: OK. Just trying the obvious. Then, Johannes' mail is a good starting point, I think. |
# 22:13:36 |
plfiorini |
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# 22:14:34 |
lazzer |
y_morin: will look into it tomorrow, doesnt look like it is possible to save that much though :( |
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