Shared object in R

Question

I want to run a FORTRAN subroutine from R. I read that, I need a shared object (.so file) to run the subroutine. For creating the shared object I successfully compiled the FORTRAN subroutine. But when creating shared object it gave the following error

/usr/bin/ld: temain.o: relocation R_X86_64_32 against `.rodata' can not be 
used when making a shared object; 
recompile with -fPIC
temain.o: could not read symbols: Bad value
collect2: error: ld returned 1 exit status

the command given was gfortran -shared -o temain.so *.o

What do I do? Thanks in advance

score 0 · Accepted Answer · answered Jun 09 '16 at 07:14

0

You need -fPIC as the error message says.

See the Writing R Extensions manual and use R CMD COMPILE myfile.f.

answered Jun 09 '16 at 07:14

Dirk Eddelbuettel

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That solved it (with a lot of warnings). It gave error previously because I did not delete the .o file created before. – curious programmer Jun 09 '16 at 07:27
You _obviously_ have to remove and rebuild that. That was the whole point: object code without relocation info. – Dirk Eddelbuettel Jun 09 '16 at 07:29

Shared object in R

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