出錯原因，沒有安裝qt4庫，/usr/lib/x86_64-linux-gnu/qt4
所以出現錯誤，
可以安裝手動安裝qt庫
sudo apt-get install qt-sdk
如果自己編譯ｑｔ庫，那就需要手動修改路徑
cd /usr/lib/x86_64-linux-gnu/qt-default/qtchooser/
會有一個default.conf配置文件，可以修改默認配置文件為你編譯好的ｑｔ庫路徑
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qt下qmake:提示could not exec '/usr/lib/x86_64-linux-gnu/qt4/bin/qmake': No such file or directory
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