[R-SIG-Mac] Writing R package that calls Fortran on Mac os X El Capitan Error

[Eduardo M. A. M.Mendes]

Please rename your NAMESPACE to something else and create a new one with

useDynLib(NEpidemic,.registration = TRUE)
export(randomepi)

It is worth a try.

> On Jun 16, 2016, at 5:40 PM, Kodalore Vijayan, Vineetha W <vwkv13 at mun.ca> wrote:
> 
>  Yes. My package name is "Epidemic" and namespace contains the following:
> 
> useDynLib(randomepi)
> useDynLib(Nepidemic, .registration = TRUE)
> 
> exportPattern("^[[:alpha:]]+")
> export(randomepi)
> import(graphics,grDevices,stats, utils)
> 
> 
> I could see Nepidemic.so and randomepi.o files in the src folder.
> 
> -V
> 
> 
> 
> 
> On Thu, Jun 16, 2016 at 2:28 PM, Eduardo M. A. M.Mendes <emammendes at gmail.com <mailto:emammendes at gmail.com>> wrote:
> Dear Vennetha
> 
> I am running R on a mac too. 
> 
> Please see if my comments below helps.
> 
> 
>> On Jun 16, 2016, at 5:00 PM, Kodalore Vijayan, Vineetha W <vwkv13 at mun.ca <mailto:vwkv13 at mun.ca>> wrote:
>> 
>> I'm trying to write an R package that calls a Fortran subroutine on my  Mac
>> os x El Capitan with Xcode 7 and gfortran 6.1, R 3.3.0.
>> 
>> I couldn't  build the library with my current namespace commands.
>> I get the following error:
>> 
>> 
>> * installing *source* package ‘Nepidemic’ ...
>> ** libs
>> gfortran  -fPIC -Wall -g -O2  -c  randomepi.f95 -o randomepi.o
>> gfortran -dynamiclib -Wl,-headerpad_max_install_names -undefined
>> dynamic_lookup -single_module -multiply_defined suppress
>> -L/Library/Frameworks/R.framework/Resources/lib -L/usr/local/lib -o
>> Nepidemic.so randomepi.o -F/Library/Frameworks/R.framework/.. -framework R
>> -Wl,-framework -Wl,CoreFoundation
> 
> The name of the library created by r cmd shlib is Nepidemic.so.
> 
>> installing to
>> /Users/Vineetha/myrlibrary/myrpackages/Nepidemic.Rcheck/Nepidemic/libs
>> ** R
>> ** preparing package for lazy loading
>> ** help
>> *** installing help indices
>> ** building package indices
>> ** testing if installed package can be loaded
>> Error in library.dynam(lib, package, package.lib) :
>>  shared object ‘randomepi.so’ not found
> 
> Note that the r cmd check is looking for randomepi.so so it means that it is calling the wrong library (it should be Nepidemic.so).  Are you sure that the NAMESPACE contains the following lines?
> 
> useDynLib(NEpidemic,.registration = TRUE)
> export(randomepi)
> 
> in all the examples I have those lines would suffice.
> 
>> Error: loading failed
>> Execution halted
>> ERROR: loading failed
>> * removing
>> ‘/Users/Vineetha/myrlibrary/myrpackages/Nepidemic.Rcheck/Nepidemic’
>> 
>> 
>> My package name is "NEpidemic" and source code file in src folder is
>> "randomepi.f95"
>> 
>> Any help would be much appreciated. I'm vey new to both R
>> and Fortran coding, especially in package building.
>> 
>> Thanks in advance!
>> Vineetha
>> 
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>> 
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