*Fixed*
Stupid mistake on my part. Make clean and re-instal of qt fixed it. Compile worked, v4 runs like a champ. Awesome program, guys.
Got GCC installed, running fine. Upgraded QT, no problem. Set pointers....no problem. Now when I do ./configure && make I get the following error:
/usr/local/qt/include/qstring.h:650 undefined reference to 'Qstring::shared_null
/usr/local/qt/include/qstring.h:652 undefined reference to 'Qstringdata:: DeleteSelf()
Anyone else run into this?