I'm sure I'm doing something dumb, but having trouble building R from
source on PopOS! 22.04 LTS (debian/Ubuntu 'jammy' derivative):
"undefined symbol: dgemmtr_" when trying to load stuff from LAPACK.
R appears to find stuff at the configure step (FWIW I get the same error
below if I take out "with-blas=-lopenblas")
$ ../r-devel/configure --enable-R-shlib --enable-memory-profiling
--with-blas=-lopenblas | grep blas
configure: WARNING: C23 support is unavailable
checking for dgemm_ in -lopenblas... yes
config.status: creating src/extra/blas/Makefile
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
I do see a NEWS item from R 4.5.0
https://github.com/r-devel/r-svn/blob/42e81d981a540f4afc01d1002a64ab347eb5dc15/doc/NEWS.Rd#L956-L961
(I thought things were working until recently, but I haven't re-built
from scratch in a while ...)
\item This update was mainly bug fixes but contained a barely
documented major change. The set of BLAS routines had been
unchanged since 1988, so throughout \R's history. This update
introduced new BLAS routines \code{dgemmtr} and \code{zgemmtr}
which are now used by LAPACK routines. This means that BLAS
implementations are no longer interchangeable.
Section A.3.1
https://rstudio.github.io/r-manuals/r-admin/Essential-and-useful-other-programs-under-a-Unix-alike.html:
> The configure code checks that the external BLAS is complete (as of
LAPACK 3.9.1: it must include all double precision and double complex
routines, as well as LSAME), and appears to be usable. However, an
external BLAS has to be usable from a shared object (so must contain
position-independent code), and that is not checked.
I'd be surprised if by BLAS libraries *didn't* contain PIC, but ... ??
Suggestions for diagnostics/debugging welcome ...
cheers
Ben Bolker
______________________________________________
[email protected] mailing list
https://stat.ethz.ch/mailman/listinfo/r-devel
