gtk3 @3.12.0 +quartz build fails on OS X 10.6.8

[mopihopi]

--->  Building gtk3
Error: org.macports.build for port gtk3 returned: command execution failed
Please see the log file for port gtk3 for details:
    /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_ports_gnome_gtk3/gtk3/main.log
Error: Unable to upgrade port: 1
To report a bug, follow the instructions in the guide:
    http://guide.macports.org/#project.tickets

The previously available version (gtk3 @3.10.7_0+quartz) builds successfully.

The build error is:

      scale = roundf ([[NSScreen mainScreen] backingScaleFactor]);

:info:build gtkapplication-quartz-menu.c: In function '-[GNSMenuItem didChangeIcon]':
:info:build gtkapplication-quartz-menu.c:265: warning: 'NSScreen' may not respond to '-backingScaleFactor'
:info:build gtkapplication-quartz-menu.c:265: warning: (Messages without a matching method signature
:info:build gtkapplication-quartz-menu.c:265: warning: will be assumed to return 'id' and accept
:info:build gtkapplication-quartz-menu.c:265: warning: '...' as arguments.)
:info:build gtkapplication-quartz-menu.c:265: error: incompatible type for argument 1 of 'roundf'
:info:build make[4]: *** [libgtk_3_la-gtkapplication-quartz-menu.lo] Error 1

The backingScaleFactor method was added to NSScreen in OS X 10.7.

[bitpup]

Cc Me!

[cooljeanius (Eric Gallager)]

Cc Me!

[neverpanic (Clemens Lang)]

Upstream at ​https://bugzilla.gnome.org/show_bug.cgi?id=727366.

[khepler]

Cc Me!

[zzanderr]

Cc Me!

[devernay (Frédéric Devernay)]

patchfile

[devernay (Frédéric Devernay)]

This patch enables compilation with the 10.6 SDK, and if running on 10.7 it properly gets the backingScaleFactor property. If running on 10.6 or below, scale is set to 1.

[neverpanic (Clemens Lang)]

Committed in r120176.