Re: [icu-support] Loading ICU dynamically

[machhindra n. <mac...@gm...>]

This option looks good for windows. I will try.

I will be shipping ICU as private shared library in Linux. It will be
placed in the same directory where my application resides. I can not update
the "xxPATH" environment variable. If I choose to build my own lightweight
library that links to ICU, then I need to place the ICU libraries in the
/lib or /local/lib directories.

Currently I am loading the data library first and then common library
dynamically using dlopen.

Machhindra

On Mon, May 21, 2012 at 3:16 AM, Paul O'Shea <osh...@gm...> wrote:

> Hi,
> In that case, perhaps you could build your own lightweight library that
> links to ICU and then dynamically load your dll when the user chooses the
> conversion option in your application.
>
> That way, you can get the benefits of linking to ICU (no version
> headaches) while avoiding the side effect of loading the ICU libraries at
> startup.
>
> Paul.
>
>
>
> On 20 May 2012 11:50, machhindra nale <mac...@gm...> wrote:
>
>> Thanks for reply!
>>
>> I am using ICU for conversion. This conversion is optional and depends
>> upon user's choice. If I link ICU (using import lib) directly, the shared
>> library will get loaded at start up.
>>
>> On Sun, May 20, 2012 at 2:15 AM, Steven R. Loomis <sr...@ic...>wrote:
>>
>>>  Mac,
>>>  First, what is the reason for trying to "load ICU dynamically" rather
>>> than just linking against it?
>>>
>>>  Second, you can disable symbol renaming, see
>>> http://userguide.icu-project.org/design#TOC-ICU-Binary-Compatibility:-Using-ICU-as-an-Operating-System-Level-Library
>>>
>>>  then, ICU will always have "u_getVersion".  But again, just link your
>>> code against ICU this way, then if you want a different ICU version you can
>>> drop in a different shared library.
>>>
>>> Hope this helps,
>>> -s
>>>
>>>
>>> On 05/18/2012 10:56 PM, machhindra nale wrote:
>>>
>>> Hello,
>>>
>>>  I am using ICU for conversion. I want to load the ICU common library
>>> and Data library dynamically on Windows/Linux platform. Libraries are
>>> loading fine. BUT I am struggling to find the correct symbol name.
>>>
>>>  Following line works fine.
>>>
>>>  GetProcAddress(myHandle , "u_getVersion_49"); or
>>>
>>>  myu_getVersion = dlsym(myHandle,"u_getVersion_49");
>>>
>>>  I don't want to restrict end users to "xxx_49" version of ICU. I
>>> should be able to change the library version seamlessly. I understand that
>>> 'symbol renaming' in ICU can be disabled explicitly. Is there any better
>>> way to handle this programmatically instead of compiling ICU on different
>>> platforms without symbol renaming?
>>>
>>>  Thanks,
>>> Mac
>>>
>>>
>>>
>>>
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