[R-pkg-devel] Lapack: undefined symbol: zgbsv_

[Dirk Eddelbuettel]

On 17 December 2017 at 17:50, Dirk Eddelbuettel wrote:
| In short, but relying on (Rcpp)Armadillo, you are submit to it changing its

That should have read: "... by relying on (Rcpp)Armadillo, you are subject to ..."

My bad.

| solver and it seems to have done so recently.  And as R is primarily
| concerned with double precision, that version you now need was never
| included.

Also, eg on the system where I do reverse-dependency checks, cda was never an
issue as we use the external libraries:

   edd at bud:~/git/rcpp-logs/logs/rcpparmadillo(master)$ grep ^cda log-RcppArmadillo-2017*
   log-RcppArmadillo-20170411-1403.txt:cda_2.0.0.tar.gz : success (42 of 344, [...]
   log-RcppArmadillo-20170503-1207.txt:cda_2.0.0.tar.gz : success (43 of 347, [...]
   log-RcppArmadillo-20170504-0609.txt:cda_2.0.0.tar.gz : success (43 of 347, [...]
   log-RcppArmadillo-20170516-1041.txt:cda_2.0.0.tar.gz : success (44 of 349, [...]
   log-RcppArmadillo-20170523-1147.txt:cda_2.0.0.tar.gz : success (43 of 349, [...]
   log-RcppArmadillo-20170524-1940.txt:cda_2.0.0.tar.gz : success (43 of 349, [...]
   log-RcppArmadillo-20170531-0642.txt:cda_2.0.0.tar.gz : success (43 of 350, [...]
   log-RcppArmadillo-20170619-0918.txt:cda_2.0.0.tar.gz : success (44 of 357, [...]
   log-RcppArmadillo-20170801-1435.txt:cda_2.0.0.tar.gz : success (48 of 375, [...]
   log-RcppArmadillo-20170803-1102.txt:cda_2.0.0.tar.gz : success (48 of 376, [...]
   log-RcppArmadillo-20170808-1000.txt:cda_2.0.0.tar.gz : success (48 of 377, [...]
   log-RcppArmadillo-20170810-0908.txt:cda_2.0.0.tar.gz : success (48 of 377, [...]
   log-RcppArmadillo-20170819-1325.txt:cda_2.0.0.tar.gz : success (49 of 381, [...]
   log-RcppArmadillo-20171002-1006.txt:cda_2.0.0.tar.gz : success (55 of 400, [...]
   log-RcppArmadillo-20171009-0935.txt:cda_2.0.0.tar.gz : success (55 of 405, [...]
   log-RcppArmadillo-20171021-0734.txt:cda_2.0.0.tar.gz : success (56 of 411, [...]
   log-RcppArmadillo-20171023-1227.txt:cda_2.0.0.tar.gz : success (56 of 412, [...]
   log-RcppArmadillo-20171108-2024.txt:cda_2.0.0.tar.gz : success (57 of 426, [...]
   log-RcppArmadillo-20171123-0845.txt:cda_2.0.0.tar.gz : success (58 of 434, [...]
   log-RcppArmadillo-20171123-1539.txt:cda_2.0.0.tar.gz : success (58 of 434, [...]
   log-RcppArmadillo-20171201-1053.txt:cda_2.0.0.tar.gz : success (56 of 430, [...]
   log-RcppArmadillo-20171204-0848.txt:cda_2.0.0.tar.gz : success (56 of 431, [...]
   log-RcppArmadillo-20171210-0828.txt:cda_2.0.0.tar.gz : success (57 of 435, [...]
   edd at bud:~/git/rcpp-logs/logs/rcpparmadillo(master)$ [...]

| In short, you seem to now have a requirement which R Core _may_ solve for you
| in time for R 3.5.0.  Otherwise your users will have to rely on systems with
| a full (external) Lapack/Blas and not the smaller embedded one.

That really seems to be the only way forward, short of embedding the routine
in cda.

Dirk

-- 
http://dirk.eddelbuettel.com | @eddelbuettel | edd at debian.org