"--disable-long-double" is documented to work and works. "--enable-long-double=no" works as well.
Please refer to Autoconf documentation (section 15.3), "--disable-feature is equivalent to --enable-feature=no" Best, Tomas On 8/21/19 2:40 PM, Michael Chirico wrote: > There's a bit of confusion about how to disable long double support in an R > build. > > I see --disable-long-double scattered about, e.g. > > - R-exts: > > https://cran.r-project.org/doc/manuals/r-release/R-exts.html#Writing-portable-packages > - R-admin: > https://cran.r-project.org/doc/manuals/r-release/R-admin.html#Solaris > - CRAN noLD check description: > https://www.stats.ox.ac.uk/pub/bdr/noLD/README.txt > - ?capabilities: > https://stat.ethz.ch/R-manual/R-devel/library/base/html/capabilities.html > > However, it's *missing* from ./config (cd r-source && grep > "disable-long-double" configure). Instead there appears to be some code > built around enable-long-double: > > ./configure:1808: --enable-long-double use long double type [yes] > > ./configure:24723:# Check whether --enable-long-double was given. > > I see the option apparently introduced here in 2012 & the ambiguity is > immediate -- the commit mentions disable-long-double but builds > enable-long-double. > > https://github.com/wch/r-source/commit/fb8e36f8be0aaf47a9c54c9effb219dae34f0e41 > > Could someone please help to clear the confusion? > > Thanks > Michael Chirico > > [[alternative HTML version deleted]] > > ______________________________________________ > R-devel@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel [[alternative HTML version deleted]] ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
