[Exim] Problems with Exim 3.15

Hello to everyone!
I am trying to compile Exim 3.15 on a HP-UX B.11.00 U 9000/800 with Perl
5.005_03.
The following error occurs:

> cc -D_HPUX_SOURCE -Aa -I/usr/local/include
-I/opt/perl5/lib/5.00503/PA-RISC2.0/CORE -O -c perl.c
> cc: "/opt/perl5/lib/5.00503/PA-RISC2.0/CORE/perl.h", line 1072: error
1713:
> Illegal redeclaration for identifier "MAGIC".
> cc: "/opt/perl5/lib/5.00503/PA-RISC2.0/CORE/mg.h", line 22: error
1587:
> Redeclaration of tag "magic".
> cc: "/opt/perl5/lib/5.00503/PA-RISC2.0/CORE/mg.h", line 22: error
1595:
> Redeclaration of members.
> *** Error exit code 1
>
> Stop.
> *** Error exit code 1
>
> Stop.

Does anybody have any suggestions?
Thank you

Marco Mancini
ue000950@???