[Qt-interest] Qt SDK 4.6 on OS X 10.6: Compile 64bit possible?

[Eric Landuyt]

Hello Oliver,

OKcc> Ok, thanks. So I understand e.g. the QtGui binary really is just one big
OKcc> huge binary, containing both 32bit and 64bit code. In other words, if I really "just
OKcc> want to ship 64bit", I need to compile Qt myself and make sure only the
OKcc> 64bit version is compiled - given the "32bit and 64bit Qt" I can't decide "only
OKcc> extract the 64bit Qt libraries and put alongside my app".

Have a look at the 'lipo' utility. According to its man page:

  The  operations that lipo performs are: listing the
  architecture types in a universal file;  creating  a  single  universal
  file from one or more input files; thinning out a single universal file
  to one specified architecture type; and extracting,  replacing,  and/or
  removing architectures types from the input file to create a single new
  universal output file.

I never tried it for i386 and x86_64, but it helped me quite well with
ppc/i386 universal binaries some years ago. ;)

Cheers,

--
Eric Landuyt, Developer - mailto:eric at datarescue.be
DataRescue sa/nv - http://www.datarescue.com