Thanks for these helpful suggestions. Changing the symbolic link for libgfortran worked. Also, I did convert the Fortran code to C using f2c, and that worked as well.
On Sep 20, 2011, at 2:24 PM, Simon Urbanek wrote: > > On Sep 20, 2011, at 2:09 PM, Charlie Sharpsteen wrote: > >> On Monday, September 19, 2011 7:41:08 PM UTC-7, Simon Urbanek wrote: >> Michael, >> the problem has nothing to do with your package (you should not be touching >> any flags at all), but rather the Fortran you use. >> >> If you have both static and dynamic fortran runtime, the dynamic one has >> always precedence. So there are essentially two possible ways forward: >> >> a) use static Fortran runtime. It simply means moving >> /usr/local/lib/libgfortran.dylib aside. >> >> b) if you use dynamic Fortran runtime, take the one from R. Since you have R >> 2.13.x it is shipped in >> /Library/Frameworks/R.framework/Versions/2.13/Resources/lib/ so you can use >> it along the lines of >> cd /usr/local/lib >> sudo ln -sfn >> /Library/Frameworks/R.framework/Versions/2.13/Resources/lib/libgfortran.2.dylib >> . >> sudo ln -sfn libgfortran.2.dylib libgfortran.dylib >> Alternatively you can simply use install_name_tool to point your package to >> R's runtime. >> >> >> Note that GFortran also has a `-static-libgfortran` flag that will force the >> compiler to select the static runtime library over the dynamic one. Using >> this flag should remove any need to move libraries around or muck about with >> `install_name_tool` (unless your package has other dynamic dependencies). >> >> Hope that helps! >> > > Not in this case, because this linking is not done by gfortran so the flag > has no effect. The problem with linking mixed code is that you have to use > g++ for linking so the Fortran runtime must be linked "by hand". R takes care > of this but it means you get your fortran used at configure time which in > Michael's case is dynamic linking. > > Cheers, > Simon > Michael Braun MIT Sloan School of Management [email protected] -------------------------------------------------- View my research at http://braunm.scripts.mit.edu/
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