Hi Jens,
On 11 September 2020 at 21:00, Dr. Jens Oehlschlägel wrote: | I can compile a package under clang++ with -stdlib=libstdc++, but with -stdlib=libc++ I get | | " | In file included from /home/jo/R/x86_64-pc-linux-gnu-library/4.0/Rcpp/include/Rcpp/r/headers.h:67: | /home/jo/R/x86_64-pc-linux-gnu-library/4.0/Rcpp/include/Rcpp/platform/compiler.h:100:10: fatal error: 'cmath' file not found | #include <cmath> | ^~~~~~~ | 1 error generated. | " | | Is there any howto for using Rcpp with -stdlib=libc++ ? That has zero to do with Rcpp. You are lacking a C++ library header when switching the C++ standard library along with clang. Nothing that Rcpp ships, or governs, or selects. I am forgetting the fine details here (and someone may hopefully fill in fuller details) but in short, "that is just the way it is". I think we simply pivot back to the g++ standard C++ library even when using clang++. Cheers from Chicago, Dirk | Greetings from Munich | | Jens Oehlschlägel | | | P.S. | | Package Makevars | CXX_STD = CXX17 | PKG_CXXFLAGS=-O3 -march=native -pthread | PKG_LIBS=-latomic -pthread | | ~.R/Makevars | CXX17 = clang++ -stdlib=libc++ | CXX17FLAGS = -fstack-protector-strong -D_FORTIFY_SOURCE=2 -g $(LTO) | CXX17STD = -std=c++17 | | > packageVersion("Rcpp") | [1] ‘1.0.5’ | | > version | _ | platform x86_64-pc-linux-gnu | arch x86_64 | os linux-gnu | system x86_64, linux-gnu | status | major 4 | minor 0.2 | year 2020 | month 06 | day 22 | svn rev 78730 | language R | version.string R version 4.0.2 (2020-06-22) | nickname Taking Off Again | | ______________________________________________ | R-package-devel@r-project.org mailing list | https://stat.ethz.ch/mailman/listinfo/r-package-devel -- https://dirk.eddelbuettel.com | @eddelbuettel | e...@debian.org ______________________________________________ R-package-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-package-devel