diff -wpruN --no-dereference '--exclude=*.orig' a~/auth-pam.c a/auth-pam.c
--- a~/auth-pam.c	1970-01-01 00:00:00
+++ a/auth-pam.c	1970-01-01 00:00:00
@@ -68,7 +68,7 @@
 #endif
 
 /* OpenGroup RFC86.0 and XSSO specify no "const" on arguments */
-#ifdef PAM_SUN_CODEBASE
+#if defined(PAM_SUN_CODEBASE) && !defined(__illumos__)
 # define sshpam_const		/* Solaris, HP-UX, SunOS */
 #else
 # define sshpam_const	const	/* LinuxPAM, OpenPAM, AIX */