[cairo] [PATCH 0/4] Build fixes

[Bryce W. Harrington]

I'd appreciate a second set of eyes on these patches.  
I've verified config and build with them on ubuntu 12.04 and 14.04.

The first two enable building against automake 1.11, which is
standard on Ubuntu 14.04.  Without these two patches, cairo doesn't
build for me on 14.04.

The third one adds a workaround for build issues when using older gccs.
A lot of distros are carrying this patch or something equivalent.

The last one fixes the Qt backend on Ubuntu 14.04 by linking against the
required stdc++ and Qt static libraries.  I'm not sure why this doesn't
error on Ubuntu 12.04 too.

Bryce Harrington (4):
  configure.ac: Define AM_PROG_AR for automake 1.11
  configure.ac: Explicitly enable subject-objects for automake 1.11
  configure.ac: Add a --disable-lto configure option
  configure.ac: Fix broken build for Qt backend

 build/configure.ac.warnings |   15 ++++++++++-----
 configure.ac                |    4 +++-
 2 files changed, 13 insertions(+), 6 deletions(-)

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1.7.9.5