[Rcpp-devel] Package using Rcpp+openmp - fatal error: 'omp.h' file not found
Simon Urbanek
simon.urbanek at R-project.org
Tue Aug 10 03:16:25 CEST 2021
Naeem,
you cannot assume that OpenMP is available as that is an optional capability, so make sure you make the inclusion of omp.h optional. Please read section 1.2.1.1 OpenMP support of the Writing R Extensions manual:
https://cran.r-project.org/doc/manuals/r-release/R-exts.html#OpenMP-support
Cheers,
Simon
> On 10/08/2021, at 10:04 AM, Naeem Khoshnevis <khoshnevis.naeem at gmail.com> wrote:
>
> Dear All,
>
> I hope this email finds you well and this is a right place to ask this question.
>
> I recently submitted a package to CRAN (thanks for all supports); however, it has been archived. According to the email, the installation was not successful on some configurations. One of them is macOS (the other one is Solaris).
> I am using Rcpp and OpenMP; here are the initial lines of the code:
> --------------
> #include <Rcpp.h>
> #include <omp.h>
> using namespace Rcpp;
>
> // [[Rcpp::plugins(openmp)]]
>
> // [[Rcpp::export]]
> IntegerVector compute_closest_wgps_helper(NumericVector a,
> NumericVector b,
> NumericVector cd,
> double sc) {
>
> ------------------
> Please see the following link for the entire code:
> https://github.com/fasrc/CausalGPS/blob/master/src/compute_closest_wgps_helper.cpp
>
> The error that I receive on R-hub is:
>
> -------------------
> compute_closest_wgps_helper.cpp:2:10: fatal error: 'omp.h' file not found
> #include <omp.h>
> ^~~~~~~
> 1 error generated.
> make: *** [compute_closest_wgps_helper.o] Error 1
> ERROR: compilation failed for package ‘CausalGPS’
> -------------------
>
> Do you know a workaround for this issue?
> I understand some R developers do not use macOS; however, I have to address this comment.
>
> Best regards,
> Naeem Khoshnevis
>
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