Solaris compile requires -D_POSIX_PTHREAD_SEMANTICS

ctime_r has two different prototypes, with either two or three arguments. To get the compiler to recognise the two-argument form used in libinktomi++/InkTime.cc requires _POSIX_PTHREAD_SEMANTICS to be defined in the build.

This can probably be harmlessly added to the Makefile across platforms.

Googling found a useful explanation at http://www.openldap.org/lists/openldap-bugs/199812/msg00110.html