[Octave-bug-tracker] [bug #53872] type of 'xilaenv_' does not match original declaration

[Mike Miller]

Follow-up Comment #1, bug #53872 (project octave):

Ugh, GCC 8 has changed the Fortran calling ABI:

>  Character variables longer than HUGE(0) elements are now possible on 64-bit
targets. Note that this changes the procedure call ABI for all procedures with
character arguments on 64-bit targets, as the type of the hidden character
length argument has changed. The hidden character length argument is now of
type INTEGER(C_SIZE_T).

(from https://gcc.gnu.org/gcc-8/changes.html)

So we need to make F77_CHAR_ARG_LEN_TYPE conditional on the version of GCC
now.

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