An update: it really seems the problem was in updating gcc to 8.1. I have installed Rtools again, and now, following the steps in the link above, I have been able to successfully compile code with the line " #include <boost/multiprecision/eigen.hpp> ". I will check now if I can use code (there is nothing of boost in the code, so far, apart from the include).
So, my request is not urgent now. Of course, I will be delighted with a new BH version. Jordi Molins i Coronado +34 69 38 000 59 On Tue, Oct 23, 2018 at 4:19 PM Jordi Molins < jordi.molins.coron...@gmail.com> wrote: > Hello, > > I am trying to use eigen and boost at the same time, in R (Windows). The > reason is that eigen allows now data types such as float128. > > What happens is that this link between eigen and boost is new (boost > 1.68). I believe BH uses boost 1.66. > > I received an answer in stackoverflow: > > > https://stackoverflow.com/questions/52871038/using-boost-multiprecision-with-rcppeigen/52887046?noredirect=1#comment92801003_52887046 > > of how to install boost 1.68 without needing BH. I have tried to implement > that solution, but it does not work: I get an error message such as > "c:/rtools/mingw_64/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: > cannot find -lgfortran collect2.exe: error: ld returned 1 exit status". > And now I do not know how to solve this "cannot find -lgfortran" issue > (note: this could be entangled with the fact that I substituted the gcc 4.9 > compiler in Rtools for gcc 8.1, since I could not compile a single > sourceCpp with gcc 4.9, but yes with gcc 8.1; I can perfectly compile Rcpp > projects, though). > > So, I would like to kindly ask if BH could be updated to boost 1.68. I > understand that updating BH must be a big work, and we all have many things > to do. But I see usually BH is updated twice per year, and this year there > has been one update so far. Also, the union of BH and eigen is possibly a > source of happiness for this community, since AFAIK, so far BH and eigen > were completely separated. > > Of course, if this request cannot be executed, I am happy too. I am just > asking in case somebody could do it without too much work, and in fact, he > was thinking in doing it anyway. > > Best regards > > Jordi Molins i Coronado > +34 69 38 000 59 >
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