This patch was developed in-house.  We have not yet decided whether to offer
it upstream or not.

--- Python-3.4.3/configure.ac.~3~	2015-02-25 08:26:17.783623099 -0800
+++ Python-3.4.3/configure.ac	2015-02-25 08:26:17.981864039 -0800
@@ -4146,7 +4146,7 @@
 
 AC_SUBST(EXT_SUFFIX)
 case $ac_sys_system in
-    Linux*|GNU*)
+    Linux*|GNU*|SunOS)
 	EXT_SUFFIX=.${SOABI}${SHLIB_SUFFIX};;
     *)
 	EXT_SUFFIX=${SHLIB_SUFFIX};;