problem when compiling with gcc

[gcazian]

We are trying to compile rssh 2.1.0. We are running AIX 5.1 and gcc is version 2.9-aix51-020209. We seem to run into a problem though, and we cannot finish:

> make
make all-am
gcc -c -DHAVE_CONFIG_H -DPATH_RSSH_CONFIG=\"/usr/local/etc/rssh.conf\" -DPATH_CHROOT_HELPER=\"/usr/local/libexec/rssh_chroot_helper\" -g -O2 rsshconf.c
In file included from /usr/bin/../lib/gcc-lib/powerpc-ibm-aix4.3.3.0/2.9-aix51-020209/include/sys/signal.h:349,
from /usr/include/signal.h:20,
from rsshconf.c:49:
/usr/include/sys/context.h:155: parse error before `sigset64_t'
/usr/include/sys/context.h:155: warning: no semicolon at end of struct or union
/usr/include/sys/context.h:158: parse error before `}'
make: 1254-004 The error code from the last command is 1.


Stop.
make: 1254-004 The error code from the last command is 2.

Has anyone else seen this error? If so, any know way to fix it?

Thanks in advance.