samba - May 2004 - Compiling samba 3.0.3 --with-pam errors pam_modules.h

I've seen this mentioned in the past, but no solutions were suggested. When
I attempt to configure --with-pam the following is produced on Solaris 8.

configure:5625: checking security/pam_modules.h usability
configure:5634: gcc -c -O -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64
conftest.c >&5
In file included from configure:5662:
/usr/include/security/pam_modules.h:17: error: parse error before '*'
token
/usr/include/security/pam_modules.h:24: error: parse error before '*'
token
/usr/include/security/pam_modules.h:31: error: parse error before '*'
token
/usr/include/security/pam_modules.h:38: error: parse error before '*'
token
/usr/include/security/pam_modules.h:45: error: parse error before '*'
token
/usr/include/security/pam_modules.h:59: error: parse error before '*'
token
/usr/include/security/pam_modules.h:71: error: parse error before '*'
token
/usr/include/security/pam_modules.h:74: error: parse error before '*'
token
/usr/include/security/pam_modules.h:83: error: parse error before '*'
token
configure:5637: $? = 1


This prevents the use of PAM. Any help here?

Thanks
Mark