Hi, Li, Please create the file "~/.R/Makevars" and put the following content in it
CC=clang-omp CXX=clang-omp++ CFLAGS += -O3 -Wall -pipe -pedantic CXXFLAGS += -O3 -Wall -pipe -Wno-unused -pedantic -fopenmp You can add or change flags in this file. Best, KK On Tue, Apr 5, 2016 at 10:14 AM, Yue Li <gorilla...@gmail.com> wrote: > Dear List, > > I’m new to openmp and wonder if anyone know how to add -fopenmp to clang++ > such that it can compile successfully without error using sourceCpp. > > Using the dmvnorm_arma as example ( > http://gallery.rcpp.org/articles/dmvnorm_arma/): > > I got the following compiling error when do this: > > > Rcpp::sourceCpp('dmvnrm_arma_mc.cpp') > *dmvnrm_arma_mc.cpp:2:10: **fatal error: **'omp.h' file not found* > #include <omp.h> > * ^* > 1 error generated. > make: *** [dmvnrm_arma_mc.o] Error 1 > clang++ -I/Library/Frameworks/R.framework/Resources/include -DNDEBUG > -I/usr/local/include -I/usr/local/include/freetype2 -I/opt/X11/include > -I"/Library/Frameworks/R.framework/Versions/3.2/Resources/library/Rcpp/include" > -I"/Library/Frameworks/R.framework/Versions/3.2/Resources/library/RcppArmadillo/include" > -I"/Users/mike/Desktop" -fPIC -Wall -mtune=core2 -g -O2 -c > dmvnrm_arma_mc.cpp -o dmvnrm_arma_mc.o > *Error in Rcpp::sourceCpp("dmvnrm_arma_mc.cpp") : * > * Error 1 occurred building shared library.* > > > After installing clang-omp, i can compile the ‘dmvnrm_arma_mc.cpp’ code > without error using clang-omp compiler instead of clang++. But in order to > use the compiled code in R environment, i still need to do the sourcing and > linking like what sourceCpp automatically accomplishes. > > So I wonder if it’s possible to either specify c++ compiler in sourceCpp > or somehow add the ‘-fopenmp’ flag > > > Thanks in advance, > Yue > > > > _______________________________________________ > 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 > -- Qiang Kou q...@umail.iu.edu School of Informatics and Computing, Indiana University
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