[R] 32bit R303 calls external C functions

[Uwe Ligges]

On 12.02.2015 19:07, Li, Yan wrote:
> I meant R3.0.3. I need this package working in R3.0.3.
>
> I have 32bit and 64bit dlls both included in the package.

So it should be fine. Maybe you compiled it for a different R version or 
on another OS????

Best,
Uwe Ligges


>
>
> -----Original Message-----
> From: Duncan Murdoch [mailto:murdoch.duncan at gmail.com]
> Sent: Thursday, February 12, 2015 1:01 PM
> To: Li, Yan; r-help at r-project.org
> Subject: Re: [R] 32bit R303 calls external C functions
>
> On 12/02/2015 11:08 AM, Li, Yan wrote:
>> Dear All,
>>
>> I build a R package which will need to call external C functions. I registered the C functions in the NAMESPACE file and include 32bit and 64bit dlls in the packages. If I load the package in 64bit R and calls the external C functions, it works fine. However if I load the package in 32bit R and call the external C functions, it either does not work properly or gives back error message saying cannot find the external C functions.
>>
>> When I built the same package in R2.15.1, there is no such issue.
>>
>> I checked the update news for R303 and found most .C is replaced by .Call. I modified the code but the package cannot be loaded and R ended abnormally.
>>
>> Does anyone know if there any difference of 32bit R303 calling external C from 64bitR303? Thank you!
>
> There's no R303; the current version is 3.1.2.  So if you meant 3.0.3, I'd suggest upgrading.  If you meant something else, you're probably in the wrong place.
>
> For 3.1.2, there are big differences:  32 bit R can't call 64 bit .dlls
> and vice versa.   You can either install the package from source in both
> versions, or arrange to compile both 32 bit and 64 bit dlls, in which case both versions can use the binary of the package.
>
> If you've already done all that, then you'll need to give more details, e.g. access to the source for the package, to get more specific help.
>
> Duncan Murdoch
>
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