Issue 4374 in pharo: Compiling and using the FT2Plugin

Status: Accepted
Owner: [hidden email]
CC: marianopeck,  [hidden email]

New issue 4374 by [hidden email]: Compiling and using the FT2Plugin
http://code.google.com/p/pharo/issues/detail?id=4374

I try to build my own vm (ubuntu 10.04, virtualbox)
Thanks to the **excellent** Mariano's blog, I can compile, it runs ok  
except the FT2Plugin.

I always have the following error message while trying to load fonts:

ioLoadModule(libFT2Plugin.so):
   libFT2Plugin.so: cannot open shared object file: No such file or directory


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Comment #1 on issue 4374 by [hidden email]: Compiling and using the  
FT2Plugin
http://code.google.com/p/pharo/issues/detail?id=4374

----- from Igor -------

Add following to
CogFamilyUnixConfig>>configureFT2Plugin: gen
        "extra rules for FT2Plugin"

| generator |

generator := maker isExternal ifTrue: [ gen ]
  ifFalse: [ gen vmGenerator ].

generator
    addExternalLibraries:
                #(
                        'freetype'  "freetype library"
                ).

This will force maker to link against freetype library.
(actually i think better would be to override the #addExternalLibraries:
in CMakePluginGenerator
which will add libraries to vm generator, if plugin is internal.
So in configureXYZPlugin: , you can just write:

gen  addExternalLibraries: #( .. )
without testing if plugin is internal or external.

------------------


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Comment #2 on issue 4374 by [hidden email]: Compiling and using the  
FT2Plugin
http://code.google.com/p/pharo/issues/detail?id=4374

#configureFT2Plugin: is the place for #addExternalLibraries: but it only  
works for FT2Plugin compiled as internal plugin.

To compile the FT2Plugin as external, you also have to use  
#addExternalLibraries: #('freetype') but not sent from #configureFT2Plugin:.

It is because of cmake and where #configurePlugin:with: is sent from the  
#generate method.

in the #generate method, #configurePlugin:with: is sent  **BEFORE**  
the 'add_library' cmd production for cmake.
it is ok for internal plugin. but, if the plugin is external, then,  
#addExternalLibraries: #('freetype')
has to be invoked **AFTER** the 'add_library' cmd production for cmake.

I've implemented a #postConfigurePlugin:with:. same logic as  
#configurePlugin:with: but sent from
the generate method after the 'add_library' cmd production.

generate
...
     vmGen config configurePlugin: plugin with: self.
...
     internal
         ifTrue: [self cmd: 'add_library' params:  name , ' STATIC  
${sources}'.]
         ifFalse: [self cmd: 'add_library' params: name , ' SHARED  
${sources}'].

     vmGen config postConfigurePlugin: plugin with: self.  "added post  
configuration here"
...



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Updates:
        Status: ReviewNeeded
        Labels: Milestone-1.3-DevImage

Comment #3 on issue 4374 by [hidden email]: Compiling and using the  
FT2Plugin
http://code.google.com/p/pharo/issues/detail?id=4374

FT2PLugin is now ok in Pharo 1.3 #13254, as an internal and as an external  
plugin.
Here is what I've done and changed:

-- started from Mariano's blog explanations (except that for testing  
purpose, I've tried with the last version of ConfigurationOfCog and of  
CMakeVMMaker).

----------------------
Deprecation raiseWarning: false.
Gofer new
   squeaksource: 'MetacelloRepository';
   package: 'ConfigurationOfCog';
   load.
((Smalltalk at: #ConfigurationOfCog) project latestVersion) load.

Gofer new
   squeaksource: 'VMMaker';
   package: 'CMakeVMMaker';
   load.
----------

ConfigurationOfCog raises the following:

***********
This package depends on the following classes:
   AbstractLauncher
You must resolve these dependencies before you will be able to load these  
definitions:
   CommandLineLauncher ...
***************

One can proceed here (btw: the question is why this dependency ?)

-- Next the plugin source.
I've tried to load Freetype-Plugin-Igor.Stasenko.57  
from: 'http://www.squeaksource.com/FreetypePlugin'.
But, because of few underscores, it is unloadable in Pharo 1.3.

So, I've removed these underscores. The resulting source file is attached  
(Freetype-Plugin-source.st).
My other changes are in ft2plugin-cmake-gen.2.cs.

With this small changes set you should be able to compile the FT2Plugin.
It is made with a 'postConfiguration' logic as explained in the previous  
post.
For convenience and testing purpose I've attached  
MyCMakeVMMaker-Unix-Cog.cs with the MyCogUnixConfig class which have the  
FT2Plugin declared as an external plugin.

-----
MyCogUnixConfig new  generateSources; generate.
-----

Alain





Attachments:
        Freetype-Plugin-source.st  50.2 KB
        ft2plugin-cmake-gen.2.cs  2.9 KB
        MyCMakeVMMaker-Unix-Cog.st  465 bytes


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Comment #4 on issue 4374 by [hidden email]: Compiling and using the  
FT2Plugin
http://code.google.com/p/pharo/issues/detail?id=4374

Thanks, Alain. I will integrate that to our builds.


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Updates:
        Labels: -Milestone-1.3-DevImage Type-Jenkins

Comment #5 on issue 4374 by [hidden email]: Compiling and using the  
FT2Plugin
http://code.google.com/p/pharo/issues/detail?id=4374

(No comment was entered for this change.)


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Comment #6 on issue 4374 by [hidden email]: Compiling and using the  
FT2Plugin
http://code.google.com/p/pharo/issues/detail?id=4374

I uploaded a new version of freetype plugin package into repository with  
your fixes.
Freetype-Plugin-IgorStasenko.59


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Updates:
        Status: Closed

Comment #7 on issue 4374 by [hidden email]: Compiling and using the  
FT2Plugin
http://code.google.com/p/pharo/issues/detail?id=4374

Name: CMakeVMMaker-IgorStasenko.107
Author: IgorStasenko
Time: 14 June 2011, 3:19:10 pm
UUID: f958c4bb-fcbc-4098-aa4c-6cf1a554f09c
Ancestors: CMakeVMMaker-IgorStasenko.106

- added rules for building freetype plugin under unix platform.

- you should load thre freetype plugin into image
(http://www.squeaksource.com/FreetypePlugin )

and then you can build VM with freetype plugin, either internal or external:

| config |
config := CogUnixConfig new.
config externalPlugins: (config externalPlugins copyWith: #FT2Plugin  ).
"
or
  config internalPlugins: (config internalPlugins copyWith: #FT2Plugin  ).
"
config generateSources.
config generate.

(both build types tested and working fine)


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Comment #8 on issue 4374 by [hidden email]: Compiling and using the  
FT2Plugin
http://code.google.com/p/pharo/issues/detail?id=4374

Hi Igor,
unfortunately it is not fixed :)
the good news is that now the freetype plugin can be loaded.

For FT2Plugin as an internal plugin, the -lfreetype is missing for the vm  
linking.
The same when you try to compile it as an external plugin. the -lfreetype  
is missing for the shared library libFT2Plugin.so linking (undefined symbol  
at runtime).

configureFT2Plugin is empty, so I guess something is missing.

Alain






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Comment #9 on issue 4374 by [hidden email]: Compiling and using the  
FT2Plugin
http://code.google.com/p/pharo/issues/detail?id=4374

it works ok for me. (tested with CMakeVMMaker-IgorStasenko.115)

work both for internal plugin as well as for external one.


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