When cross compile qt4.7.1, Relocations in generic ELF (EM: 40)

[ieealfree]

/usr/bin/ld: /home/iyya/Downloads/qt-4.7.1-arm/src/tools/bootstrap/libbootstrap.a(compress.o): Relocations in generic ELF (EM: 40)
/home/iyya/Downloads/qt-4.7.1-arm/src/tools/bootstrap/libbootstrap.a: could not read symbols: File in wrong format
collect2: ld returned 1 exit status
make[1]: *** [../../../bin/moc] Error 1
make[1]: Leaving directory `/home/iyya/Downloads/qt-4.7.1-arm/src/tools/moc'
make: *** [sub-moc-make_default-ordered] Error 2

How to solve the problem, thank everyone!