You can install qtruby by making sure you have qt4 installed, and then
'gem install qtbindings'.
It's pretty easy.
This is as far as I got .. thanks
yum install qt4
yum install cmake
yum install qt4-devel
export PATH=$PATH:/usr/lib64/qt4/bin/
gem install qtbindings
Build files have been written to: /usr/lib64/ruby/gems/1.8/gems/
qtbindings-4.6.3.0/ext/build
cd ext/build; make
make[1]: Entering directory `/usr/lib64/ruby/gems/1.8/gems/
qtbindings-4.6.3.0/ext/build'
make[2]: Entering directory `/usr/lib64/ruby/gems/1.8/gems/
qtbindings-4.6.3.0/ext/build'
make[3]: Entering directory `/usr/lib64/ruby/gems/1.8/gems/
qtbindings-4.6.3.0/ext/build'
Scanning dependencies of target cppparser
make[3]: Leaving directory `/usr/lib64/ruby/gems/1.8/gems/
qtbindings-4.6.3.0/ext/build'
make[3]: Entering directory `/usr/lib64/ruby/gems/1.8/gems/
qtbindings-4.6.3.0/ext/build'
[ 1%] Building CXX object generator/parser/CMakeFiles/cppparser.dir/
ast.o
[ 2%] Building CXX object generator/parser/CMakeFiles/cppparser.dir/
default_visitor.o
[ 3%] Building CXX object generator/parser/CMakeFiles/cppparser.dir/
memorypool.o
[ 3%] Building CXX object generator/parser/CMakeFiles/cppparser.dir/
visitor.o
[ 4%] Building CXX object generator/parser/CMakeFiles/cppparser.dir/
control.o
[ 5%] Building CXX object generator/parser/CMakeFiles/cppparser.dir/
lexer.o
/usr/lib64/ruby/gems/1.8/gems/qtbindings-4.6.3.0/ext/generator/parser/
kdevvarlengtharray.h:60: error: expected constructor, destructor, or
type conversion before ‘typedef’
/usr/lib64/ruby/gems/1.8/gems/qtbindings-4.6.3.0/ext/generator/parser/
lexer.cpp:32: error: expected constructor, destructor, or type
conversion before ‘void’
make[3]: *** [generator/parser/CMakeFiles/cppparser.dir/lexer.o] Error
1
make[3]: Leaving directory `/usr/lib64/ruby/gems/1.8/gems/
qtbindings-4.6.3.0/ext/build'
make[2]: *** [generator/parser/CMakeFiles/cppparser.dir/all] Error 2
make[2]: Leaving directory `/usr/lib64/ruby/gems/1.8/gems/
qtbindings-4.6.3.0/ext/build'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/usr/lib64/ruby/gems/1.8/gems/
qtbindings-4.6.3.0/ext/build'
make: *** [build] Error 2
Gem files will remain installed in /usr/lib64/ruby/gems/1.8/gems/
qtbindings-4.6.3.0 for inspection.
Results logged to /usr/lib64/ruby/gems/1.8/gems/qtbindings-4.6.3.0/
gem_make.out