# NOTE THIS WAS DONE ON A DIRTY QUETZL QUARTL QUIZZL  
Building debug version qt-5 from open source:
  ./configure -prefix /usr/local/Qt5 -developer-build -debug -nomake tests \
	      -nomake examples -confirm-license \
	      -opensource 
  # use -j(processors times 2)
  # the docs say that -jN works, but there are in fact raceconditions!
  make module-qtbase module-qtsvg module-qtimageformats \
       module-qtgraphicaleffects module-qtdoc \
       install
Building debug version ruby-1.9.3:
  apt-get install libyaml-dev libreadline6-dev
  optflags=-O0 debugflags='-DDEBUG -g' ./configure --prefix=/usr --sysconfdir=/etc \
  --localstatedir=/var --program-suffix=1.9.1 \
  --enable-shared --enable-debug-env --with-out-ext=sdbm,syck
  # sdbm and syck do not compile
  make -j4 all install
Building debug version ruby-2.0.0:
  # Note it needs gdbm1.9 current Ubuntu version is 1.8. So fails.
  # sdbm still fails
  apt-get install libyaml-dev libreadline6-dev libgdbm-dev libffi-dev \
		  libncurses5-dev libtokyocabinet-dev libqdbm-dev
  optflags=-O0 debugflags='-DDEBUG -g' \
  ./configure --prefix=/usr --sysconfdir=/etc \
	      --localstatedir=/var --program-suffix=2.0.0 \
	      --enable-shared --enable-debug-env \
	      --with-out-ext=sdbm
  make -j4 all install

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DEPRECATED


requirements for alsa+DEPRECATED stuff:
    - ruby1.9.2 or higher, including rdoc, gem etc.
    - libasound2-dev (on Ubuntu at least), alsa development headers
    - rspec, testing machinery (sudo gem install rspec)
    - darkfish-rdoc, for documentation (optional)
    - the GNU 'make' program, cmake and qt4-qmake
    - the environment variable $RUBYLIB should contain the 'lib' dir, for example:
    export RUBYLIB=/home/eugene/Midibox/lib:/usr/local/lib/site_ruby/1.9.1:/usr/local/lib/site_ruby/1.9.1/x86_64-linux

Hm.. qtruby4.6.3.1 contains a bug. A simple 'Qt::Variant::new(0.0)' immediately fails!
To fix patch it:
  sudo patch -p0 -E < qtruby4631.patch

INSTALL: cannot be done yet. But isn't really required at the moment.