link to linaro release instead of broken Kobo repo for compiler toolchain

[buckley-w-david]

The linked sources of the compiler toolchain are inaccessible.

The files in the repo are references to git large file storage

[I] david@darvid-pc ~/P/w/p/K/toolchain (master)> cat gcc-linaro-4.9.4-2017.01-x86_64_arm-linux-gnueabihf.tar.xz 
version https://git-lfs.github.com/spec/v1
oid sha256:22914118fd963f953824b58107015c6953b5bbdccbdcf25ad9fd9a2f9f11ac07
size 80881572

[I] david@darvid-pc ~/P/w/p/K/toolchain (master) [2]> cat gcc-linaro-4.9.4-2017.01-20170615_darwin.tar.bz2 
version https://git-lfs.github.com/spec/v1
oid sha256:ad23f8252fcab0af1dc4fc2f758ec29dbe73c5b29b1589d5b8a7bf5483887ff4
size 132853143

But trying to fetch them results in this error

[I] david@darvid-pc ~/P/w/p/K/toolchain (master) [1]> git lfs fetch
fetch: Fetching reference refs/heads/master
batch response: This repository is over its data quota. Account responsible for LFS bandwidth should purchase more data packs to restore access.                
error: failed to fetch some objects from 'https://github.com/kobolabs/Kobo-Reader.git/info/lfs'
[I] david@darvid-pc ~/P/w/p/K/toolchain (master) [2]> 

This issue #164 pointed me towards this source.
It's unfortunate that it doesn't have a Darwin release like the kobo repo did, but neither are accessible at this point anyway.

[baskerville]

@NiLuJe What's the most recent Linaro toolchain that has a GLIBC version requirement compatible with the current firmware?

[NiLuJe]

No idea, I never used the binary releases ;).

[NiLuJe]

But we do have binaries available in https://github.com/koreader/koxtoolchain nowadays :).

[baskerville]

I found the answer by running /lib/libc-2.11.1.so on the latest firmware:

GNU C Library (crosstool-NG 1.24.0.103_75d7525) stable release version 2.19, by Roland McGrath et al.
Copyright (C) 2014 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.
Compiled by GNU CC version 4.9.4.
Compiled on a Linux 2.6.35 system on 2020-04-13.
Available extensions:
        crypt add-on version 2.1 by Michael Glad and others
        Native POSIX Threads Library by Ulrich Drepper et al
        BIND-8.2.3-T5B
libc ABIs: UNIQUE
For bug reporting instructions, please see:
<http://www.gnu.org/software/libc/bugs.html>.

[NiLuJe]

If you need to support pre 4.x FW versions (can never remember the exact cutoff, it's around 4.6 IIRC), it's 2.15 ;).