Writing R package that calls Fortran on Mac os X El Capitan Error

On Jun 16, 2016, at 5:53 PM, Kodalore Vijayan, Vineetha W <vwkv13 at mun.ca> wrote:

Perfect! Its working now. Thanks a lot for your patience and help.

Just curious, what did I do wrong in the previous case?

-Vineetha

On Thu, Jun 16, 2016 at 2:48 PM, Eduardo M. A. M.Mendes <emammendes at gmail.com <mailto:emammendes at gmail.com>> wrote:
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 <mailto: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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