Which version of Xcode/Command Line Tools are you using? If >= 12 (and
perhaps earlier) Apple have set default C options which violate the
C99/C11 standard, so you need -Wno-implicit-function-declaration.
If you have a configure issue, do read and report the relevant parts of
config.log file: it probably told you what the problem was (it did for me):
conftest.c:227:1: error: implicit declaration of function 'dgemm_' is
invalid in
C99 [-Werror,-Wimplicit-function-declaration]
We will add a further comment to the R-admin manual, but Big Sur has
been released for less than a week and a hint was already there ....
On 22/11/2020 17:33, Anirban Mukherjee wrote:
Hi,
I am having trouble configuring R to use the vecLib BLAS and LAPACK libraries.
I am on Mac OS 11.0.1 and Xcode 12.2. I tried the following options:
1. I downloaded the R binary from CRAN. I tried to follow the instructions at
https://cran.r-project.org/bin/macosx/RMacOSX-FAQ.html#Which-BLAS-is-used-and-how-can-it-be-changed_003f
to switch the BLAS library. I do not see libRblas.vecLib.dylib in the folder
so I cannot switch the BLAS library as given in the FAQ. I also cannot locate
libRblas.vecLib.dylib on my system.
2. I tried to compile R from source. I used the following configuration options:
--with-blas="-framework Accelerate” and --with-lapack. I should have all
requisite libraries. The compiled R does not use the vecLib BLAS and LAPACK
(sessionInfo below signature). During configure, I noticed configure outputted:
checking for dgemm_ in -framework Accelerate… no
Is that perhaps why configure does not configure the compiled R to use the
Accelerate (vecLib) framework? Any suggestions would be very welcome.
Thanks,
Anirban
sessionInfo()
R version 4.0.3 Patched (2020-11-20 r79454)
Platform: x86_64-apple-darwin20.1.0 (64-bit)
Running under: macOS Big Sur 10.16
Matrix products: default
LAPACK:
/Library/Frameworks/R.framework/Versions/4.0/Resources/lib/libRlapack.dylib
locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8
attached base packages:
[1] stats graphics grDevices utils datasets methods base
loaded via a namespace (and not attached):
[1] compiler_4.0.3 tools_4.0.3
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Brian D. Ripley, rip...@stats.ox.ac.uk
Emeritus Professor of Applied Statistics, University of Oxford
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