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On mac, easier install of data.table with OpenMP #6497

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On mac, easier install of data.table with OpenMP #6497

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2 changes: 1 addition & 1 deletion R/onAttach.R
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Original file line number Diff line number Diff line change
Expand Up @@ -31,7 +31,7 @@
if (!.Call(ChasOpenMP)) {
packageStartupMessagef("**********\nThis installation of data.table has not detected OpenMP support. It should still work but in single-threaded mode.\n", appendLF=FALSE)
if (Sys.info()["sysname"] == "Darwin")
packageStartupMessagef("This is a Mac. Please read https://mac.r-project.org/openmp/. Please engage with Apple and ask them for support. Check r-datatable.com for updates, and our Mac instructions here: https://github.com/Rdatatable/data.table/wiki/Installation. After several years of many reports of installation problems on Mac, it's time to gingerly point out that there have been no similar problems on Windows or Linux.\n**********")
packageStartupMessagef("This is a Mac. Please read https://mac.r-project.org/openmp/. If you are a MacPorts users, reinstall data.table with openmp option: "sudo port install r-data.table +openmp". Please engage with Apple and ask them for support. Check r-datatable.com for updates, and our Mac instructions here: https://github.com/Rdatatable/data.table/wiki/Installation. After several years of many reports of installation problems on Mac, it's time to gingerly point out that there have been no similar problems on Windows or Linux.\n**********")
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user*

with openmp option

with the OpenMP option

else
packageStartupMessagef("This is %s. This warning should not normally occur on Windows or Linux where OpenMP is turned on by data.table's configure script by passing -fopenmp to the compiler. If you see this warning on Windows or Linux, please file a GitHub issue.\n**********", Sys.info()["sysname"])
}
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