R devel - Mar 2009 - More Embedding REngine in Cocoa

Hello once again,
After locating the standalone REngine object set, I am having  
difficulty integrating them into the XCode project I intend to use  
them in.

Suppose one started with the REngine standalone source and a blank  
XCode file, what special modifications need to be made to allow the  
source files to see inside R.framework?  Importing the framework into  
the project, setting the header and framework search paths hasn't done  
anything for me yet.  The files are complaining about the R.h file not  
existing.  Using the R.app as a reference, I was unable to find  
specifically how it adds the R/ directory visibility to the  
application headers at link or compile time.

I was able to compile and run the test file inside the REngine  
standalone.  However, I don't know how to initiate my application in  
XCode using the R CMD command.  What impacts will this have to the  
existing program?  Finally, I was also unable to find any sort of  
implementation of this in RGui.  Is this even necessary from XCode?

I hope this is enough detail.  Thanks in advance.
David Zwerdling
zwerdlds at gmail.com

DAvid,

On Mar 25, 2009, at 2:44 , David Zwerdling wrote:
> Hello once again,
> After locating the standalone REngine object set, I am having  
> difficulty integrating them into the XCode project I intend to use  
> them in.
>
> Suppose one started with the REngine standalone source and a blank  
> XCode file, what special modifications need to be made to allow the  
> source files to see inside R.framework?  Importing the framework  
> into the project, setting the header and framework search paths  
> hasn't done anything for me yet.
You only need to set the header path to include Headers and  
PrivateHeaders of the R.framework - everything else follows  
automatically from adding the R.framework to the project.

 From R.xcodeproj:
HEADER_SEARCH_PATHS = (
	/Library/Frameworks/R.framework/Headers,
         /Library/Frameworks/R.framework/PrivateHeaders,
);

That's all.

>  The files are complaining about the R.h file not existing.  Using  
> the R.app as a reference, I was unable to find specifically how it  
> adds the R/ directory visibility to the application headers at link  
> or compile time.
>
See above.

> I was able to compile and run the test file inside the REngine  
> standalone.  However, I don't know how to initiate my application in  
> XCode using the R CMD command.  What impacts will this have to the  
> existing program?
Essentially R CMD sets up the environment for R automatically. If you  
have a stand-alone application and you cannot (or don't want to) use R  
CMD then have a look at the R.app GUI - it creates the environment  
itself in RController.m l.306-373 (current SVN r5376). The following  
code (l.375-420) then sets up the locale - it may be a bit more  
complicated than what you need, but you just have to ensure you're  
running in a UTF-8 locale. [Note:

>  Finally, I was also unable to find any sort of implementation of  
> this in RGui.  Is this even necessary from XCode?
>
See above.

Cheers,
Simon


> I hope this is enough detail.  Thanks in advance.
> David Zwerdling
> zwerdlds at gmail.com
>
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