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/ <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
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