[Exim] Building exim 3.13 for Solaris 5.7

I am trying to build exim 3.13 on a Sun Sparc Ultra 2 running Solaris 5.7
(which, I assume, others will have done ... hopefully with more success
than I)

After editing Local/Makefile and running make, I get:-



/usr/local/bin/gcc -O -o buildconfig buildconfig.c -lsocket -lnsl -lkstat
In file included from buildconfig.c:29:
/usr/local/lib/gcc-lib/sparc-sun-solaris2.5.1/2.7.2.2/include/ctype.h:13:
sys/feature_tests.h: No such file or directory
In file included from buildconfig.c:30:
/usr/local/lib/gcc-lib/sparc-sun-solaris2.5.1/2.7.2.2/include/stdio.h:17:
sys/feature_tests.h: No such file or directory
/usr/local/lib/gcc-lib/sparc-sun-solaris2.5.1/2.7.2.2/include/stdio.h:18:
sys/va_list.h: No such file or directory
In file included from buildconfig.c:31:
/usr/local/lib/gcc-lib/sparc-sun-solaris2.5.1/2.7.2.2/include/stdlib.h:13:
sys/feature_tests.h: No such file or directory
In file included from buildconfig.c:32:
/usr/local/lib/gcc-lib/sparc-sun-solaris2.5.1/2.7.2.2/include/string.h:13:
sys/feature_tests.h: No such file or directory
*** Error code 1
make: Fatal error: Command failed for target `buildconfig'
Current working directory /usr/exim-3.13/build-SunOS5-5.7-sparc
*** Error code 1
make: Fatal error: Command failed for target `go'




Can anyone suggest what I have done wrong?

Thanks


--------------
Alan Stanier
Essex University Computing Service
Systems Support Group