Something just changed in the Sage build process : as of 7.4, LAPACK is no longer available to programs running in the Sage shell.
Case in point : I want to install JAGS (an MCMC sampler), which is needed by the rjags R package, of some use to Bayesian R users... This package compiled fine in the Sage shell up to Sage 7.4beta6. Now, the --configure step fails with : checking for cheev_ in -llapack... no checking for cheev_ in -llapack_rs6k... no configure: error: "You need to install the LAPACK library" Indeed : charpent@asus16-ec:~$ find /usr/local/sage-7/ -iname "*lapack*so*" /usr/local/sage-7/local/lib/R/modules/lapack.so /usr/local/sage-7/local/lib/python2.7/site-packages/cvxopt/lapack.so /usr/local/sage-7/local/lib/python2.7/site-packages/numpy/linalg/lapack_lite.so /usr/local/sage-7/local/lib/python2.7/site-packages/scipy/linalg/_flapack.so /usr/local/sage-7/local/lib/python2.7/site-packages/scipy/linalg/cython_lapack.so charpent@asus16-ec:~$ find /usr/local/sage-7/ -iname "*lapack*h*" /usr/local/sage-7/local/lib/R/include/R_ext/Lapack.h /usr/local/sage-7/local/include/lapacke_mangling.h /usr/local/sage-7/local/include/linbox/algorithms/numeric-solver-lapack.h /usr/local/sage-7/local/include/lapacke_config.h /usr/local/sage-7/local/include/lapacke.h Short of forcing the Sage build process to use the system's LAPACK (which can be done but, as far as I know, is not recommended), I don't see how to force the creation of this library and its header file. Note that could be useful to reduce overhead : R (standard package) creates its own version (probably for lack of finding it at build time...) ; it also exists in the python package cvxopt. 1) What do you think ? 2) Should a ticket be filed ? HTH, -- Emmanuel Charpentier -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
