Trimming uclibc in l4

Björn Döbel doebel at os.inf.tu-dresden.de
Tue Sep 16 19:15:37 CEST 2014


Hi,

as Marcus already pointed out, newer versions of L4Re actually contain a 
package called uclibc_minimal that serves exactly this purpose. Even if 
you are using an older snapshot, chances are that backporting this 
package (and adapting l4/mk) might be easier than stripping things down 
yourself.

Bjoern

Am 16.09.2014 um 19:02 schrieb Masti Ramya Jayaram:
> Update: turns out it is not very simple to compile just bootstrap against a smaller library because the l4/mk/modes.inc file defaults to the uclibc library for compiling the files which is used for all packages. Any ideas how I can change this only for some packages?
>
> Thanks.
> Ramya
> ________________________________________
> From: l4-hackers [l4-hackers-bounces at os.inf.tu-dresden.de] on behalf of Masti  Ramya Jayaram [rmasti at inf.ethz.ch]
> Sent: 16 September 2014 17:53
> To: l4-hackers at os.inf.tu-dresden.de
> Subject: Trimming uclibc  in l4
>
> Dear all,
>
> I would like to extract the minimal subset of uclibc required by bootstrap, sigma and their dependencies only. My idea is to have these modules use the smaller libc while retain the usual uclibc build for the other packages.
>
> I intend to go about this by copying uclibc (say into uclibc_min) and then modifying the contrib_files_all.lst and contrib_files_x86.lst. Is this the correct way to do this?
>
> Also, I extracted all the package dependencies of bootstrap and sigma from the control files (below)
>
> bootstrap: drivers_uart drivers_of libc l4util cxx_io
> drivers-frst:libc
> l4util: crtn libc
> crtn: l4sys
> l4sys: ldscripts
> l4util: crtn libc
> cxx: l4sys l4util
> ulibc: l4sys
> sigma0: crtn l4sys l4util libsigma0 cxx_io
> libsigma0:  l4sys
>
>
> Is this the correct way to do this as well?
>
> Thanks,
> Ramya
>
>
>
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