Re: function to check if a symbol in a library exists or not

  • From: Coda Highland <chighland@xxxxxxxxx>
  • To: luajit@xxxxxxxxxxxxx
  • Date: Mon, 30 Jul 2012 11:44:43 -0700

On Mon, Jul 30, 2012 at 11:41 AM, Cosmin Apreutesei
<cosmin.apreutesei@xxxxxxxxx> wrote:
>> If it is something for which there is no way to do an alternative
>> implementation I might just let it error. What is code using your
>> library going to do if it needs the functions? Maybe you provide a
>> test routine or table that lets the user know what is there so they
>> can abort if stuff they need is missing.
> (sorry, I missed your last paragraph and question)
> Ok, so application A is using cairo to output a PDF document, and
> application B to display stuff on screen via GDI. Two apps using two
> cairo API chunks which are optional to compile. Each app will break if
> the wrong cairo.dll is shipped with it, but I want both to work with
> the same cairo.lua file, so I don't think the argument "your app will
> break anyway" applies to middleware.

This sounds like a bloody awful design on Cairo's part: Why should
there be an allegedly-cross-platform API that changes its API based on
the available features?

/s/ Adam

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