cairo 1.6.4 does not build under Solaris, where you need to define
_POSIX_PTHREAD_SEMANTICS to get ctime_r definition.

Here is a suggested patch:

2008-04-17  Arnaud Charlet  <charlet@adacore.com>

        * src/cairo-ps-surface.c: Define _POSIX_PTHREAD_SEMANTICS, needed
        under Solaris.

--- src/cairo-ps-surface.c.old  2008-04-17 15:14:36.996930195 +0200
+++ src/cairo-ps-surface.c      2008-04-17 15:15:36.527525972 +0200
@@ -41,6 +41,7 @@
  */

 #define _BSD_SOURCE /* for ctime_r(), snprintf(), strdup() */
+#define _POSIX_PTHREAD_SEMANTICS
 #include "cairoint.h"
 #include "cairo-ps.h"
 #include "cairo-ps-surface-private.h"