[Development] configure qtbase on mac os

[Rohan McGovern]

Chris Meyer said:
> I'm configuring qtbase (Mac OS 10.6.8, Xcode 4.2, and qtbase/master)
> using the following command:
> 
> export QTDIR=/some/path/for/installation
> ./configure -prefix $QTDIR -opensource -no-sql-mysql -qt-libpng
> -qt-libjpeg -no-dbus -nomake examples -nomake demos
> 
> After a while, I get an error that configure cannot determine
> big-endian or little-endian.

Hmm, do you get anything useful if you add -verbose to configure?

> However, these options seem to be
> required only if I'm building with the -qpa option, which should
> default to off.

Why do you think qpa should default to off?  It doesn't, it defaults to
on.

> 
> It looks like the variable $PLATFORM_MAC is not being set properly. Is
> this something that needs to be specified on the command line or is
> the machinery for automatically setting $PLATFORM_MAC broken?

PLATFORM_MAC shouldn't be set, because that indicates an old non-qpa
carbon or cocoa build.  qpa is the default and non-qpa paths are being
eliminated.