KDE_FIND_PATH(pkg-config, PKGCONFIG, [${prefix}/bin ${exec_prefix}/bin /usr/bin /usr/local/bin /opt/local/bin], [
  AC_MSG_WARN([Could not find pkg-config])
])

AC_CHECK_PROG(RUBY, ruby, ruby)

if test -z "$RUBY"; then
  DO_NOT_COMPILE="$DO_NOT_COMPILE qtruby"
else
  AC_MSG_CHECKING(for ruby dirs)
  if test -n "$PKGCONFIG"; then
    RUBY_VERSION=`$PKGCONFIG ruby --modversion 2>/dev/null`
    if test -z "$RUBY_VERSION"; then
      RUBY_VERSION=`$PKGCONFIG ruby-1.9 --modversion 2>/dev/null`
    fi
    if test -n "$RUBY_VERSION"; then
      RUBY_ARCHDIR=`$RUBY -r rbconfig -e 'printf("%s",RbConfig::CONFIG@<:@"archdir"@:>@)'`
      RUBY_SITEARCHDIR=`$RUBY -r rbconfig -e 'printf("%s",RbConfig::CONFIG@<:@"sitearchdir"@:>@)'`
      RUBY_SITEDIR=`$RUBY -r rbconfig -e 'printf("%s",RbConfig::CONFIG@<:@"sitelibdir"@:>@)'`
      RUBY_RUBYLIBDIR=`$RUBY -r rbconfig -e 'printf("%s",RbConfig::CONFIG@<:@"rubylibdir"@:>@)'`
      RUBY_LIBDIR=`$RUBY -r rbconfig -e 'printf("%s",RbConfig::CONFIG@<:@"libdir"@:>@)'`
      RUBY_LIBRUBYARG=`$RUBY -r rbconfig -e 'printf("%s",RbConfig::CONFIG@<:@"LIBRUBYARG_SHARED"@:>@)'`
      RUBY_CFLAGS=`$PKGCONFIG ruby --cflags`
      AC_DEFINE_UNQUOTED(HAVE_RUBY_1_9, 1, [Defines if your system has Ruby 1.9.x])
    fi
  fi
  if test -z "$RUBY_VERSION"; then
    RUBY_ARCHDIR=`$RUBY -r rbconfig -e 'printf("%s",Config::CONFIG@<:@"archdir"@:>@)'`
    RUBY_SITEARCHDIR=`$RUBY -r rbconfig -e 'printf("%s",Config::CONFIG@<:@"sitearchdir"@:>@)'`
    RUBY_SITEDIR=`$RUBY -r rbconfig -e 'printf("%s",Config::CONFIG@<:@"sitelibdir"@:>@)'`
    RUBY_RUBYLIBDIR=`$RUBY -r rbconfig -e 'printf("%s",Config::CONFIG@<:@"rubylibdir"@:>@)'`
    RUBY_LIBDIR=`$RUBY -r rbconfig -e 'printf("%s",Config::CONFIG@<:@"libdir"@:>@)'`
    RUBY_LIBRUBYARG=`$RUBY -r rbconfig -e 'printf("%s",Config::CONFIG@<:@"LIBRUBYARG_SHARED"@:>@)'`
  fi
  AC_MSG_RESULT([archdir $RUBY_ARCHDIR, sitearchdir $RUBY_SITEARCHDIR, sitedir $RUBY_SITEDIR, libdir $RUBY_LIBDIR, librubyarg $RUBY_LIBRUBYARG, cflags $RUBY_CFLAGS])
  AC_SUBST(RUBY_ARCHDIR)
  AC_SUBST(RUBY_SITEARCHDIR)
  AC_SUBST(RUBY_SITEDIR)
  AC_SUBST(RUBY_RUBYLIBDIR)
  AC_SUBST(RUBY_LIBDIR)
  AC_SUBST(RUBY_LIBRUBYARG)
  AC_SUBST(RUBY_CFLAGS)
fi