compiling qt in 64b on mac

[squidge]

You need to rebuild Qt in 64-bit before you can compile your app in 64-bit.

[eric_vi]

thank you for your answer...

i have two other questions,

1/ if i rebuild with the 64b flag, will it automatically replace my current qt in the right directory or will should i indicate a location, in this case where it is?

2/ will i be able to elect to compile my project in 32b or in 64b without having to rebuild qt each time?