On Wed, Mar 11, 2015 at 10:32 AM, Avraham Adler <avraham.ad...@gmail.com> wrote: > On Wed, Mar 11, 2015 at 1:23 PM, Hsiu-Khuern Tang <tan...@gmail.com> wrote: >> On Tue, Mar 10, 2015 at 10:47 PM, Avraham Adler <avraham.ad...@gmail.com> >> wrote: >>> On Wed, Mar 11, 2015 at 1:40 AM, Hsiu-Khuern Tang <tan...@gmail.com> wrote: >>>> On Tue, Mar 10, 2015 at 8:54 PM, Avraham Adler <avraham.ad...@gmail.com> >>>> wrote: >>>>> >>>>> I successfully rebuilt R-devel_2015-03-09 with the most recent version >>>>> of Rtools tonight, building both ICU_531 and this time libcurl (7.39) >>>>> as well (and OpenBLAS, of course). The internet bug is still there, >>>>> but the rest of make-check all passed with flying colors, as did >>>>> building 'microbenchmark' from source (with all the other needed >>>>> packages, including Rcpp and Hsiu-Kheurn's change to NM was *not* >>>>> used). >>>>> ... >>>> >>>> The NM_FILTER change seems to be needed only when compiling C++ code >>>> with -std=c++11 or -std=gnu++11. >>>> >>>> Even though the current CRAN policy doesn't allow the C++11 standard, >>>> it would still be useful to document this, perhaps in the Writing R >>>> Extensions manual. >>>> >>>> - Hsiu-Khuern >>> >>> Hello, Hsiu-Khuern. >>> >>> All the times I have built, I've passed -std-gnu++11. Specifically, I >>> pass: -march=native -O3 -mfpmath=sse -std=gnu++11 -msse2avx >>> -mavx256-split-unaligned-load -mavx256-split-unaligned-store >>> -mvzeroupper --param l1-cache-line-size=64 --param l1-cache-size=64 >>> --param l2-cache-size=256. >>> ... >> >> Interesting. I tested the use of -O0, ..., -O3 together with >> -std=gnu++11. With -O0 (which I suppose is the default if not >> specified), I get the following error when R CMD INSTALL is trying to >> create Rcpp.dll: >> >> collect2.exe: error: ld returned 5 exit status >> >> With -O1, -O2, or -O3, there is no error. >> >> - Hsiu-Khuern >> > > The default is O2, I believe, as the default EOPTS in > src/gnuwin32/Mkrules.dist are -O2 -mtune=core2.
I was setting CXXFLAGS=-std=gnu++11 in my .R/Makevars, which overrides the CXXFLAGS setting in $R_HOME/etc/x64/Makeconf, hence the final g++ option didn't include the -O2 -mtune=core2. Sorry for not being clear. - Hsiu-Khuern ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
