Upgrade freetype to 2.10.1 to fix installation on slackware-14.2

[mkoeppe]

freetype fails to install on slackware-14.2-minimal, as can be seen at ​https://github.com/mkoeppe/sage/runs/520449598 (via #29354):

./builds/unix/libtool --tag=RC --mode=compile windres -o /sage/local/var/tmp/sage/build/freetype-2.9.1/src/objs/ftver.lo /sage/local/var/tmp/sage/build/freetype-2.9.1/src/src/base/ftver.rc
libtool: compile:  windres /sage/local/var/tmp/sage/build/freetype-2.9.1/src/src/base/ftver.rc  -o /sage/local/var/tmp/sage/build/freetype-2.9.1/src/objs/.libs/ftver.o
/sage/local/var/tmp/sage/build/freetype-2.9.1/src/src/base/ftver.rc:19:20: fatal error: windows.h: No such file or directory
compilation terminated.
windres: preprocessing failed.

The upgrade to 2.10.1 fixes it. The upstream tarball URL is in checksums.ini. To test the update on this branch: Use make SAGE_SPKG="sage-spkg -o" freetype; this will download the new upstream package automatically.

[git]

Branch pushed to git repo; I updated commit sha1. This was a forced push. New commits:

[mkoeppe]

Tests run at ​https://github.com/mkoeppe/sage/actions/runs/60588138

[dimpase]

these tests are pretty much a waste, as the package is not yet on Sage's mirrors, and thus its installation fails. One should have used the new feature with an explcit URL to download from.

[dimpase]

the testing framework also needs a feature to force using particular non-system packages, as every "standard" run with freetype available from the system does not do anything meaningful here.

[mkoeppe]

The new Upstream URL feature is used in these tests, and it's working. What are you looking at?

[mkoeppe]

Replying to dimpase:

the testing framework also needs a feature to force using particular non-system packages, as every "standard" run with freetype available from the system does not do anything meaningful here.

See #29367 EXTRA_CONFIGURE_ARGS

[dimpase]

Replying to mkoeppe:

The new Upstream URL feature is used in these tests, and it's working. What are you looking at?

2020-03-22T08:03:02.1567136Z Attempting to download from https://download.savannah.gnu.org/releases/freetype/freetype-2.10.1.tar.gz
2020-03-22T08:03:02.1567310Z [xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx]
2020-03-22T08:03:02.1567461Z ERROR [transfer|run:135]: [Errno socket error] [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed 

from here ​https://pipelines.actions.githubusercontent.com/4D1poTSDSSApU42GXYeGgQX6WjHwGPK9ZzdaE2SeHdlUs0ZBhW/_apis/pipelines/1/runs/241/signedlogcontent/54?urlExpires=2020-03-22T09%3A41%3A06.3755166Z&urlSigningMethod=HMACV1&urlSignature=lx22u7XIVAqXD3PUUbXYorDK9uZ%2BEcEZXa3P0435XeU%3D

now I see that it's a different kind of problem, sorry - but still a problem.

[dimpase]

probably instead of using something meaninful (wget is able to get the file just fine), it uses an improperly set Python-based downloader.

This might be a slackware-specific issue, though.

[mkoeppe]

Replying to dimpase:

probably instead of using something meaninful (wget is able to get the file just fine), it uses an improperly set Python-based downloader.

This might be a slackware-specific issue, though.

Yes, thanks for spotting this. I'll try to fix this on #29354.

[mkoeppe]

The download issues is fixed in #29354

[git]

Branch pushed to git repo; I updated commit sha1. This was a forced push. New commits:

​f7683c7

Update freetype to 2.10.1, add upstream_url

[mkoeppe]

Rebased on 9.1.beta9, needs review

[mkoeppe]

Still needs review

[gh-kliem]

This seems to solve the problem for slackware standard install.

For minimal install it fails to build git for some reason.

​https://github.com/kliem/sage-test-27122/actions/runs/68003296.

I can also confirm that the upgrade works fine on debian buster and sage -t --all passes.

[mkoeppe]

Replying to gh-kliem:

For minimal install it fails to build git for some reason.

See #29424 for this.

[gh-kliem]

Is there anything to pay attention to?

LGTM.

[mkoeppe]

I guess one needs to check that the update does not break plotting.

[gh-kliem]

Ok. I ran ​https://matplotlib.org/contents.html and ​https://matplotlib.org/3.1.0/tutorials/text/mathtext.html with and without upgrade and I don't see a difference.

[mkoeppe]

Thanks very much!