qmake与qt4的连接问题

为什么make输出的编译命令会跟qt3相关，本人已经安装了qt4

$qmake -v
$Qmake version: 1.07a (Qt 3.3.8b)
$Qmake is free software from Trolltech ASA.

$qmake -v $Qmake version: 1.07a (Qt 3.3.8b) $Qmake is free software from Trolltech ASA.

怎么qmake的版本变成了qt3了，进入/usr/bin目录下

root@ubuntu:/home/yyy# cd /usr/bin

root@ubuntu:/usr/bin# ls -l qmake
lrwxrwxrwx 1 root root 23 2009-10-09 09:35 qmake -> /etc/alternatives/qmake

查看qmake的信息，它是一个链接指向的是/etc/alternatives/qmake

root@ubuntu:/usr/bin# ls -l /etc/alternatives/qmake
lrwxrwxrwx 1 root root 18 2009-12-08 12:46 /etc/alternatives/qmake -> /usr/bin/qmake-qt3

终于找到的根源，原来qmake被设置成了qmake-qt3

强行修改

root@ubuntu:/usr/bin# rm /etc/alternatives/qmake
root@ubuntu:/usr/bin# ln -s /usr/bin/qmake-qt4 /etc/alternatives/qmake
root@ubuntu:/usr/bin# qmake -v
QMake version 2.01a
Using Qt version 4.5.0 in /usr/lib