pkg/59735: Perl5 build error on SCO/Xinuos UnixWare 7 Definitive 2018 MP1

[gavrilovegor519%gmail.com@localhost]

>Number:         59735
>Category:       pkg
>Synopsis:       Perl5 build error on SCO/Xinuos UnixWare 7 Definitive 2018 MP1
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Oct 28 13:35:02 +0000 2025
>Originator:     Egor Gavrilov
>Release:        pkgsrc-current at 28 Oct 2025
>Organization:
>Environment:
UnixWare uw7 5 7.1.4 i386 x86at SCO UNIX_SVR5
>Description:
===> Building for perl-5.42.0
echo @`sh  cflags "optimize='-DUNIXWARE -O2   -D_REENTRANT -I/usr/include'" opmini.o` -fpic -DPERL_IS_MINIPERL -DPERL_EXTERNAL_GLOB opmini.c
@gcc -c -DPERL_CORE -D_REENTRANT -DUNIXWARE -O2 -D_REENTRANT -I/usr/include -fpic -pthread -fwrapv -fno-strict-aliasing -pipe -D_FORTIFY_SOURCE=2 -DUNIXWARE -O2 -D_REENTRANT -I/usr/include -Wall -fpic -DPERL_IS_MINIPERL -DPERL_EXTERNAL_GLOB opmini.c
In file included from perl.h:2132:0,
                 from op.c:163:
/usr/include/sys/mode.h:39:19: error: array type has incomplete element type 'enum vtype'
 extern enum vtype iftovt_tab[];
                   ^~~~~~~~~~
*** Error code 1
>How-To-Repeat:
Build one of packages which have Perl dependency.
>Fix: