On 15/04/2025 11:59, Ulrich KELLER wrote:
Symlinking the vecLib-based BLAS no longer seems to work with R 4.5.0. After
running `ln -sf libRblas.vecLib.dylib libRblas.dylib`, R fails to load the
stats package:
```
During startup - Warning message:
package ‘stats’ in options("defaultPackages") was not found
library(stats)
Error: package or namespace load failed for ‘stats’ in dyn.load(file, DLLpath =
DLLpath, ...):
unable to load shared object
'/Library/Frameworks/R.framework/Versions/4.5-arm64/Resources/library/stats/libs/stats.so':
dlopen(/Library/Frameworks/R.framework/Versions/4.5-arm64/Resources/library/stats/libs/stats.so,
0x0006): Symbol not found: _dgemmtr_
Referenced from: <28799065-89DC-362D-9F05-042D50E7824C>
/Library/Frameworks/R.framework/Versions/4.5-arm64/Resources/lib/libRlapack.dylib
Expected in: <BA0E9688-AFD2-34E6-A54F-3B08D084074A>
/Library/Frameworks/R.framework/Versions/4.5-arm64/Resources/lib/libRblas.vecLib.dylib
```
Switching back to the default BLAS fixes the problem. In R 4.4.3, which I also
still have installed through rig, the vecLib BLAS works fine.
This is covered in NEWS (and in detail in the R-admin manual). See in
particular the NEWS section 'BLAS and LAPACK:'.
It seems no one who cares about this tested the nightly builds (and I
believe using OpenBLAS, which is complete and is documented, is to be
preferred). Ideally Dr Urbanek would add the missing routines to
libRblas.vecLib.dylib: he does not publicise how he builds that. Or R
could be built with --with-2025blas.
--
Brian D. Ripley, rip...@stats.ox.ac.uk
Emeritus Professor of Applied Statistics, University of Oxford
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