Next versions should build with --enable-gl

[Antoine]

As far as I know, adding the --enable-gl configure flag doesn't change the bahaviour of existing code, but extends the API to enable OpenGL accelerated drawing, and interoperability with existing GL contexts. This can boost performances for many applications, should they use to use these features.
This would add dependency on glx, which is already required by any compositing WM and is very likely already available on most systems.
As it is, I have to build cairo by hand to use this feature.

[Harry (harry33)]

Cairo has been built with gl enabled from the version 1.10.2-6ubuntu1.
However, it seems that nvidia proprietary driver (nvidia-current) is incompatible with this feature causing system hang ups and CPU speeding.
See the bug #821702

[Sebastien Bacher (seb128)]

Thank you for your bug report but as pointed that breaks nvidia drivers

[Mathias Hasselmann (hasselmm)]

looks like we need a better solution than "won't fix", since gtk's wayland backend depends on this backend - not?

[Mathias Hasselmann (hasselmm)]

sebastian, guess the problem has been communicated upstream already?

[Mathias Hasselmann (hasselmm)]

hmm, the gentoo guys claim this actually was a libc problem: https://bugs.gentoo.org/show_bug.cgi?id=375615#c82