A problem in making the GAUSS_QUADRATURE.f90.o about scifortran HOT 2 OPEN

Hi! Recursive allocatable components in derived types are a fairly established language feature nowadays (if I recall correctly they have been introduced in Fortran 2008). But apparently your version of ifort does not implement it yet (that's what the error message is telling). Nevertheless their support page does not mention this implementation gap in the "known issues section" (see here), which might imply it has been addressed in a minor version (unfortunately they do not detail bugfixes between minors, not on this page at least).

On the bright side the release notes for ifort 18.0.x guarantee that the whole Fortran 2008 standard is covered, so you should be able to solve the specific issue by upgrading the major version of your compiler (if possible!).

I can personally guarantee that SciFortran builds correctly with ifort 2021.x, so if you have access to it (or newer) you would be assured to be on the safe side.

On a side note: we currently state in the README that any ifort > 13 should work, so I apologize for the mislead. The Gauss quadrature module is fairly new (introduced this summer) and we did not check for older ifort versions. If you manage to solve with an ifort version between 17 and 22 please report back so we can update the README with (a good estimate of) a newer minimum version for the compiler. Thanks in advance!

from scifortran.

Thanks for your quick and detailed response! I'm sorry that I don't have a new version of ifort and can't give a newer minimum version for the compiler. I determine to install an older version of SciFortran temporarily.

from scifortran.