Patching config.guess allows nokogiri installation on machines based on ppc64le architecture.

[hernan-erasmo]

When this patch is applied, it updates config.guess file inside the temp dir where libxslt gets extracted before installation.

[flavorjones]

Ah - I somehow missed this PR. Will take a look!

[larskanis]

This looks good to me. The config.guess of the last libxslt release is ancient and no newer version is available in the git repo. So I think patching like this is OK.

Tests run successfully on Linux, on OS X and on Windows, when merged to master.

[hernan-erasmo]

That's good to hear! You guys let me know if there's anything else that I can do.

Do you think it's possible that this patch makes it into 1.6.7 final?

[larskanis]

@flavorjones This PR patches config.guess to the version of 2015-07-03 but libxml2 uses an older version of 2013-06-10 (the latest version is 2015-09-14 currently). What is you opinion - should we patch libxslt to 2013-06-10 or patch libxml2 to 2015-07-03 as well or merge this and use two different versions of config.guess in libxml2 and libxslt?

[hernan-erasmo]

(@flavorjones)

Following @larskanis idea, I've created PR #1352 that updates both libxslt and libxml2 config.guess files to the latest version

IMHO this would be the most consistent approach, but in any case you can now choose between PR #1326 and PR #1352 and use the one you think it's more appropiate.

Hope you don't mind that I've opened 2 PR's for 2 different ways to solve the same problem :)

[flavorjones]

@hernan-erasmo Thanks for this. I think I'd like to get this (or your other PR) into 1.6.7, since it seems to be turning into an "installation improvement" release. ;)

[flavorjones]

Confirmed the contents of config.guess are what we expect, post-patch.

This isn't optimal, as it's persisting the difference between libxml2's current file and the latest from the config project, but it's good enough for now. When it breaks (and it will, whenever libxml2/libxslt update their config), we'll likely change this implementation to simply copy in the latest config.guess rather than try to patch what's there.

@hernan-erasmo: Have you sent a patch upstream to libxml2/libxslt to update their config.guess? If not, I'd like to ask that you do.

Merged into master now. Will be in 1.6.7.rc4.