[Octave-bug-tracker] [bug #55956] build overlinks with SUNDIALS libraries even when HAVE_SUNDIALS is unset

[Michael Godfrey]

Follow-up Comment #4, bug #55956 (project octave):

With current Fedora 29 I get:

checking whether SUNDIALS IDA is configured with double precision realtype...
yes
checking sunlinsol/sunlinsol_dense.h usability... yes
checking sunlinsol/sunlinsol_dense.h presence... yes
checking for sunlinsol/sunlinsol_dense.h... yes
checking whether SUNDIALS IDA includes the SUNLINSOL_DENSE linear solver...
yes
checking klu.h usability... no
checking klu.h presence... no
checking for klu.h... no
checking klu/klu.h usability... no
checking klu/klu.h presence... no
checking for klu/klu.h... no
checking for suitesparse/klu.h... (cached) yes
checking ufsparse/klu.h usability... no
checking ufsparse/klu.h presence... no
checking for ufsparse/klu.h... no
checking for sunlinsol/sunlinsol_klu.h... no
checking for SUNKLU in -lsundials_sunlinsolklu... yes
checking whether compiling a program that calls SUNKLU works... yes
configure: WARNING: SUNDIALS IDA library not configured with SUNLINSOL_KLU or
sunlinksol_klu.h is not usable; ode15i and ode15s will not support the sparse
Jacobian feature
checking for IDASetJacFn... no
checking for IDASetLinearSolver... no
checking for SUNLinSol_Dense... no
checking for SUNLinSol_KLU... no
checking ida/ida_direct.h usability... yes
checking ida/ida_direct.h presence... yes
checking for ida/ida_direct.h... yes
checking ida_direct.h usability... no
checking ida_direct.h presence... no
checking for ida_direct.h... no
checking for IDADlsSetJacFn... yes
checking for IDADlsSetLinearSolver... yes
checking for SUNDenseLinearSolver... yes
checking for SUNKLU... no
checking for dseupd in -larpack ... yes
checking whether the arpack library works... yes

and:
configure: WARNING: SUNDIALS IDA library not configured with SUNLINSOL_KLU or
sunlinksol_klu.h is not usable;

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