Error Building In Ubuntu 16.04 LTS crosstool-NG

[UlmusLeo]

make[2]: Entering directory '/home/name/Documents/esp-open-sdk/crosstool-NG'
[INFO ] Performing some trivial sanity checks
[INFO ] Build started 20170310.121909
[INFO ] Building environment variables
[INFO ] =================================================================
[INFO ] Retrieving needed toolchain components' tarballs
[ERROR]
[ERROR] >>
[ERROR] >> Build failed in step 'Retrieving needed toolchain components' tarballs'
[ERROR] >> called in step '(top-level)'
[ERROR] >>
[ERROR] >> Error happened in: do_expat_get[scripts/build/companion_libs/210-expat.sh@741]
[ERROR] >> called from: do_companion_libs_get[scripts/build/companion_libs.sh@15]
[ERROR] >> called from: main[scripts/crosstool-NG.sh@591]
[ERROR] >>

This error seems to be because it is trying to reference an old version of expat
The build is successful when the file crosstool-NG/scripts/build/companion_libs/210-expat.sh is renamed to 220-expat.sh which then downloads and installs expat version 2.2.0 with no reported errors.

I am new to esp and am not sure if upgrading the version here breaks anything.

[kxygk]

(@UlmusLeo .. just a sanity check for you)
I'm also having the same issue, though I couldn't get your fix working unfortunately
I also tried on my ARM machine (Chromebook + crouton) and it too fails in crosstool-NG, but at a different companion-lib

Looks like the esp-open-sdk needs an update, but I'm also new to ESP - so it's hard for me to debug the problem as well

[supramaterial]

A way to fix this issue is this pull request: jcmvbkbc/crosstool-NG#53
This also fixes #307

It boils down to update the URL template in crosstool-NG/scripts/build/companion_libs/210-expat.sh from
http://downloads.sourceforge.net/project/expat/expat/${CT_EXPAT_VERSION}
to
https://github.com/libexpat/libexpat/releases/download/R_${CT_EXPAT_VERSION//[.]/_}