I tried building syslog-ng 1.9.11 on Solaris 9 with the Sun C compiler. It failed with the following: cc -DHAVE_CONFIG_H -I. -I. -I.. -DPATH_SYSCONFDIR=\"/etc/opt/TWWfsw/syslogng1911\" -DPATH_LOCALSTATEDIR=\"/var/opt/TWWfsw/syslogng1911\" -I/opt/TWWfsw/libglib26/include -I/opt/TWWfsw/libglib26/lib/include -I/opt/TWWfsw/gettext014/include -I/opt/TWWfsw/syslogng198/include/eventlog -D_GNU_SOURCE -mr -Qn -xstrconst -xO2 -xtarget=ultra2 -xarch=v8plusa -c afinet.c "afinet.c", line 81: warning: implicit function declaration: memset "afinet.c", line 156: undefined symbol: SOL_IP "afinet.c", line 162: undefined symbol: SOL_IP "afinet.c", line 169: undefined symbol: SOL_IP "afinet.c", line 172: undefined symbol: SOL_IP "afinet.c", line 181: warning: left operand of "->" must be pointer to struct/union "afinet.c", line 188: undefined symbol: SOL_IPV6 "afinet.c", line 194: undefined symbol: SOL_IPV6 "afinet.c", line 200: undefined symbol: SOL_IPV6 cc: acomp failed for afinet.c gmake[2]: *** [afinet.o] Error 2 gmake[2]: Leaving directory `/opt/build/syslog-ng-1.9.11/src' The prototype for memset() is in <string.h>. Solaris 9 doesn't have SOL_IP anywhere in /usr/include. From setsockopt(3SOCKET) on Solaris 9: When manipulating socket options, the level at which the option resides and the name of the option must be specified. To manipulate options at the "socket" level, level is speci- fied as SOL_SOCKET. To manipulate options at any other level, level is the protocol number of the protocol that controls the option. For example, to indicate that an option is to be interpreted by the TCP protocol, level is set to the TCP protocol number . See getprotobyname(3SOCKET). AIX 5.3 doesn't build for the same reason: "afinet.c", line 157.32: 1506-045 (S) Undeclared identifier SOL_IP. "afinet.c", line 182.13: 1506-021 (S) Expecting struct or union. "afinet.c", line 189.32: 1506-045 (S) Undeclared identifier SOL_IPV6. gmake[2]: *** [afinet.o] Error 1 gmake[2]: Leaving directory `/opt/build/syslog-ng-1.9.11/src' Ditto for HP-UX 11.23/PA and 11.23/IA. -- albert chin (china@thewrittenword.com)