Pick up QMAKE_MACOSX_DEPLOYMENT_TARGET from mkspec when building qmake

Instead of setting it explicitly to 10.6. Before 736e4258a this was
not a problem, as we were hard-coding the version flags as part of
the C/CXX_FLAGS for each makespec, so getQMakeConf would pick
them up automatically. When 736e4258a introduced sdk.prf as the
place to resolve these flags in a single place, it broke the
qmake build for macx-clang-libc++, as we were then falling
back to the 10.6 target hard-coded in configure.

We fix this by duplicating some of the logic from sdk.prf, by
pulling out the QMAKE_MACOSX_DEPLOYMENT_TARGET variable
and adding to the C/CXX_FLAGS.

Change-Id: I04afc7525031727c2504588c70dd3f7892cc8e42
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

0 files changed, 0 insertions, 0 deletions