error luarocks install qtlua

[JinShiyin]

-- The C compiler identification is GNU 4.8.5
-- The CXX compiler identification is GNU 4.8.5
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
CMake Error at /usr/share/cmake/Modules/FindQt4.cmake:1392 (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-1-6037/qtlua/build/CMakeFiles/CMakeOutput.log".

Error: Build error: Failed building.

[leonbottou]

You need to have the Qt4 development files, and in particular you need to have program qmake (from Qt4, not Qt3 or Qt5) available in the search path. Note that Qt4 is considered obsolete, so qtlua is also obsolete by now.