qlua：cannot find the command

[liupengfei1234]

Dear author：When I run the demo, error: cannot find 'qlua' command，the command 'lua' is from package 'lua5.1' (universe). I set up the lua on 5.1 version, but it can not identify the 'qlua' command, do you know which causes the problem? Waiting for your reply. Thank you！

[SeungjunNah]

Could you check if you can run the command th? You can run qlua after installing torch.

[liupengfei1234]

I can run the command th, then coming into the torch interface.

[SeungjunNah]

I see. Then probably your torch installation skipped it. Could you check if your installed luarocks list includes qtlua or qttorch by typing luarocks list? If not, you may install them with following commands.

luarocks install qtlua
luarocks install qttorch

[liupengfei1234]

When I input 'luarocks install qtlua', it says: qmake: could not exec '/usr/lib/x86_64-linux-gnu/qt4/bin/qmake': No such file or directory CMake Error at /usr/share/cmake-3.5/Modules/FindQt4.cmake:1326 (message): Found unsuitable Qt version "" from NOTFOUND, this code requires Qt 4.x Call Stack (most recent call first): CMakeLists.txt:38 (FIND_PACKAGE) -- Configuring incomplete, errors occurred! See also "/tmp/luarocks_qtlua-scm-1-9587/qtlua/build/CMakeFiles/CMakeOutput.log". Does I need to download qt?

[SeungjunNah]

No, that is nor required. Did you run bash install-deps before intalling torch? It should have installed all the requirements to install qlua.

I recommend you to re-install torch.

If this problem further complicates you, then you can run without qt support. You can run demo with th if you comment some lines used to display images from test.lua: line 264 and line 270.

Those are lines where I used image.display function. You will find the results saved in dataset/examples/deblurred_xxx.

[liupengfei1234]

I re-install torch, problem of 'qlua' solved, but it comes:
home/bacon/torch/install/share/lua/5.1/xlua/init.lua:360: module 'liblua_png' not found: no field package.preload['liblua_png'] no file '/home/bacon/.luarocks/share/lua/5.1/liblua_png.lua' no file '/home/bacon/.luarocks/share/lua/5.1/liblua_png/init.lua' no file '/home/bacon/torch/install/share/lua/5.1/liblua_png.lua' no file '/home/bacon/torch/install/share/lua/5.1/liblua_png/init.lua' no file './liblua_png.lua' no file '/home/bacon/torch/install/share/luajit-2.1.0-beta1/liblua_png.lua' no file '/usr/local/share/lua/5.1/liblua_png.lua' I find a solution to use aptitude replacing apt-get, But it appears the same problem too. When install torch, as follows: libgraphicsmagick1-dev : dependency: libwmf-dev ,not installed dependency: libfreetype6-dev not installed dependency: libtiff-dev dependency: zlib1g-dev not installed or libz-dev dependency: libpng-dev

[SeungjunNah]

It seems like you didn't run bash install-deps command from torch install instruction. The required dependencies should be installed when you run it. Note that you would need sudo permission.

[liupengfei1234]

problem solved, thank you very much~ I will always support you！