About qt4-ruby

ruby-talk
1

Hi,
    Today I compiled qt4-ruby in my rhel5 box. And have a little test. Well, when the .rb runs, it says something wrong from qtruby4.so, libsmokeqt.so.2 does not have symbol of _ZN8QWebView11qt_metacastEPKc.
    I recompiled qt4 with -webkit option, and qt4-ruby. Not helping.

2

Alle Wednesday 17 December 2008, Magicloud ha scritto:

Hi,
    Today I compiled qt4-ruby in my rhel5 box. And have a little test.
Well, when the .rb runs, it says something wrong from qtruby4.so,
libsmokeqt.so.2 does not have symbol of _ZN8QWebView11qt_metacastEPKc.
    I recompiled qt4 with -webkit option, and qt4-ruby. Not helping.

It's smoke which doesn't have the symbol, not qt itself, so you'll need to
recompile smoke, and maybe also qtruby itself too.

Stefano

3

Stefano Crocco wrote:

Alle Wednesday 17 December 2008, Magicloud ha scritto:
  

Hi,
    Today I compiled qt4-ruby in my rhel5 box. And have a little test.
Well, when the .rb runs, it says something wrong from qtruby4.so,
libsmokeqt.so.2 does not have symbol of _ZN8QWebView11qt_metacastEPKc.
    I recompiled qt4 with -webkit option, and qt4-ruby. Not helping.
    
It's smoke which doesn't have the symbol, not qt itself, so you'll need to recompile smoke, and maybe also qtruby itself too.

Stefano

So may I know how to compile smoke? I read smoke/README, and ran the four commands in it, which gave me a new libsmokeqt.so, which still does not work.

4

Alle Thursday 18 December 2008, Magicloud ha scritto:

Stefano Crocco wrote:
> Alle Wednesday 17 December 2008, Magicloud ha scritto:
>> Hi,
>> Today I compiled qt4-ruby in my rhel5 box. And have a little test.
>> Well, when the .rb runs, it says something wrong from qtruby4.so,
>> libsmokeqt.so.2 does not have symbol of _ZN8QWebView11qt_metacastEPKc.
>> I recompiled qt4 with -webkit option, and qt4-ruby. Not helping.
>
> It's smoke which doesn't have the symbol, not qt itself, so you'll need
> to recompile smoke, and maybe also qtruby itself too.
>
> Stefano

So may I know how to compile smoke? I read smoke/README, and ran the
four commands in it, which gave me a new libsmokeqt.so, which still does
not work.

If you mean the commands:

cd qt
./qtguess.pl
./generate.pl
make

they're not enough. As the README states, they're only to generate the .cpp
files. What you need is the following:
* go in the top level directory of qtruby
* mkdir build
* cd build
* cmake ..
* make
* sudo make install

This will install qtruby4 in /usr/local (excluding the ruby bindings
themselves, which will be installed in /usr/lib/ruby/site_ruby/1.8 (or
something like this, depending on whether ruby itself is installed). If you
want to install it somewhere else, replace the cmake .. command with

cmake -DCMAKE_INSTALL_PREFIX=/path/to/install/dir ..

I think this should solve your problem. If you have other questions about
qtruby, you can post them in the qtruby forum, which you can find at
http://rubyforge.org/projects/korundum, where you'll be more likely to get an
answer (and a better one, too, since there questions are answered by the
developers themselves).

I hope this helps

Stefano

5

Stefano Crocco wrote:

Alle Thursday 18 December 2008, Magicloud ha scritto:
  

Stefano Crocco wrote:
    

Alle Wednesday 17 December 2008, Magicloud ha scritto:
      

Hi,
    Today I compiled qt4-ruby in my rhel5 box. And have a little test.
Well, when the .rb runs, it says something wrong from qtruby4.so,
libsmokeqt.so.2 does not have symbol of _ZN8QWebView11qt_metacastEPKc.
    I recompiled qt4 with -webkit option, and qt4-ruby. Not helping.
        

It's smoke which doesn't have the symbol, not qt itself, so you'll need
to recompile smoke, and maybe also qtruby itself too.

Stefano
      

So may I know how to compile smoke? I read smoke/README, and ran the
four commands in it, which gave me a new libsmokeqt.so, which still does
not work.
    
If you mean the commands:

cd qt
./qtguess.pl
./generate.pl
make

they're not enough. As the README states, they're only to generate the .cpp files. What you need is the following:
* go in the top level directory of qtruby
* mkdir build
* cd build
* cmake ..
* make
* sudo make install

This will install qtruby4 in /usr/local (excluding the ruby bindings themselves, which will be installed in /usr/lib/ruby/site_ruby/1.8 (or something like this, depending on whether ruby itself is installed). If you want to install it somewhere else, replace the cmake .. command with

cmake -DCMAKE_INSTALL_PREFIX=/path/to/install/dir ..

I think this should solve your problem. If you have other questions about qtruby, you can post them in the qtruby forum, which you can find at http://rubyforge.org/projects/korundum, where you'll be more likely to get an answer (and a better one, too, since there questions are answered by the developers themselves).

I hope this helps

Stefano

I used kdebindings instead of qt4-ruby, everything is fine now.
Thanks.