I get this error while building my qt project on arch linux
make[1]: /opt/qt/5.3/gcc_64/bin/qmake: Command not found
what could be the problem ?
did you install qt? I am not used to arch. i think that the packet manages is pacman you should have something like:
pacman -S qt5-base
as you can see from the doc this package contains qmake: https://www.archlinux.org/packages/extra/x86_64/qt5-base/
Since as you said this is installed probably the path you try to use is the wrong. I think you should use:
/usr/bin/qmake-qt5