R build BLAS/LAPACK debugging ('dgemmtr_' undefined)
Thanks everyone, this is working now (I did a few too many things at
once to be sure: (1) installed lopenblas-devel; (2) used
--with-2025blas; (3) tried `make` without running in parallel, i.e. not
`make -j 10` ...)
cheers
Ben Bolker
On 2026-01-26 2:28 p.m., Ivan Krylov wrote:
? Mon, 26 Jan 2026 12:45:41 -0500 Ben Bolker <bbolker at gmail.com> ?????:
Then `make` fails with:
byte-compiling package 'grDevices'
Warning in solve.default(rgb) :
unable to load shared object
'/home/bolker/R/r-build/modules//lapack.so':
/home/bolker/R/r-build/lib/libRlapack.so: undefined symbol: dgemmtr_
Error in solve.default(rgb) : LAPACK routines cannot be loaded
.../configure --with-2025blas should help with this by linking the subroutines missing in older versions of OpenBLAS but required by R-bundled LAPACK from a separate file.