Intalling Qt 3.3 on mac book

while executing ./configure -thread the following errors appear and therefore it is not able to install.

Quote:

Creating makefiles. Please wait...
for /Developer/Qt/3.3.6/src/moc/moc.pro
/Developer/Qt/3.3.6/bin/qmake: line 1: XSym: command not found
/Developer/Qt/3.3.6/bin/qmake: line 2: 0014: command not found
/Developer/Qt/3.3.6/bin/qmake: line 3: fcbee38f8622109da7a8af6f2e2bd3de: command not found
/Developer/Qt/3.3.6/bin/qmake: line 4: ../qmake/qmake: No such file or directory
for /Developer/Qt/3.3.6/src/qt.pro
/Developer/Qt/3.3.6/bin/qmake: line 1: XSym: command not found
/Developer/Qt/3.3.6/bin/qmake: line 2: 0014: command not found
/Developer/Qt/3.3.6/bin/qmake: line 3: fcbee38f8622109da7a8af6f2e2bd3de: command not found
...

Any ideas on why these error appear ?

Thanks a lot