Fortran DLL
On Fri, 23 May 2003, Alex Randriamiharisoa wrote:
Dear R-users, After the reading of "Writing R extensions", "readme.packages", "Using external compilers with R", ..., I have tried to create a DLL for my Fortran file using the command: g77 --shared -o robeth.dll robeth.f and failed with several messages as : c:\temp/ccU8N5fb.o: ... undefined reference to 'realpr_' c:\temp/ccU8N5fb.o: ... undefined reference to 'dblepr_' c:\temp/ccU8N5fb.o: ... undefined reference to 'intpr_' c:\temp/ccU8N5fb.o: ... undefined reference to 'rexit_' What I have missed. If I insert #include <R.h> at the top of the file, the MinGW g77 compiler exits immediately => "undefined or invalid # directives"
These are references to R.dll, which is not linked. Perhaps try Rcmd SHLIB robeth.f to use the build train that will link correctly.
I've tested on R Version 1.5.1 and 1.7.0, for windows. If a special library is needed, someone could send it to me by mail. Thanks for your help. Alex R.
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