Uhm, yes I see I testd with package, and linux, it works But with Windows it don't find the liblzma
Em qui., 23 de jun. de 2022 às 07:59, Dirk Eddelbuettel <e...@debian.org> escreveu: > > On 23 June 2022 at 10:05, Serguei Sokol wrote: > | Le 23/06/2022 à 04:07, Roberto Spadim a écrit : > | > Hi folks > | > > | > I have a .xz file and need to read it and "convert" to a DataFrame > using > | > Rcpp if possible. > | > > | > But... I'm with a problem (first time testing this) using liblzma with > | > Rcpp, I already know how to do this with CMakeLists.txt, but I don't > | > know how to do with RCpp > | > > | > Anyone have an idea? > | You have to use Makevars file, either in src/ or in $HOME/.R/ dir. > | In this file you have to add something like: > | > | PKG_CPPFLAGS += -I<dir_where_lzma.h_leaves> > | PKG_LDFLAGS += -L<dir_where_liblzma.so_lives> -llzma > | > | To make this solution portable, you can want to use configure script > | which usage is described in WRE > | > https://cran.r-project.org/doc/manuals/r-release/R-exts.html#Configure-and-cleanup > | > | Best, > | Serguei. > | > | > > | > Output from compile time: > | > > | > > sourceCpp("D:/Trabalho/FTDB-R/FTDB/src/ftdbR.cpp") > > And you want to look into using a package, not `sourceCpp()` which is > designed for more one-off interactive work. > > You can start a package with the `Rcpp.package.skeleton()` function, and > then > add a src/Makevars as correctly suggested by Serguei. There are also many > example Rcpp on CRAN, GitHub and other places to look at. The `qs` and > `fst` > packages both cover compression too (but do a lot more...), I can't right > now > think of a simpler package adding just one compressor but there may well > be one. > > Regards, Dirk > > | > /mingw64/bin/g++ -std=gnu++11 -I"C:/PROGRA~1/R/R-41~1.2/include" > | > -DNDEBUG > -I"C:/Users/rspadim/Documents/R/win-library/4.1/Rcpp/include" > | > -I"D:/Trabalho/FTDB-R/FTDB/src" > -I"D:/Trabalho/FTDB-R/FTDB/inst/include" > | > -O2 -Wall -mfpmath=sse -msse2 -mstackrealign -c > | > D:/Trabalho/FTDB-R/FTDB/src/xz/xz/decode.cpp -o > | > D:/Trabalho/FTDB-R/FTDB/src/xz/xz/decode.o > | > D:/Trabalho/FTDB-R/FTDB/src/xz/xz/decode.cpp:5:10: fatal error: > lzma.h: > | > No such file or directory > | > #include <lzma.h> > | > ^~~~~~~~ > | > compilation terminated. > | > make: *** [C:/PROGRA~1/R/R-41~1.2/etc/x64/Makeconf:245: > | > D:/Trabalho/FTDB-R/FTDB/src/xz/xz/decode.o] Error 1 > | > Error in sourceCpp("D:/Trabalho/FTDB-R/FTDB/src/ftdbR.cpp") : > | > Error 1 occurred building shared library. > | > In addition: Warning message: > | > In normalizePath(path.expand(path), winslash, mustWork) : > | > path[1]="D:/Trabalho/FTDB-R/FTDB/src/../inst/include": O sistema > não > | > pode encontrar o caminho especificado > | > > | > > | > _______________________________________________ > | > Rcpp-devel mailing list > | > Rcpp-devel@lists.r-forge.r-project.org > | > > https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel > | > | _______________________________________________ > | Rcpp-devel mailing list > | Rcpp-devel@lists.r-forge.r-project.org > | https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel > -- > dirk.eddelbuettel.com | @eddelbuettel | e...@debian.org > -- Roberto Spadim SPAEmpresarial - Software ERP/Scada Eng. Automação e Controle, Eng. Financeira
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