On Solaris, pam modules are always dynamic, but use the #define check that

gnome-keyring does in gkr-pam-module.c for consistency.

Solaris should define PAM_EXTERN by default in appropriate pam header files

just as Linux/BSD do:

24969227 Add PAM_EXTERN for Linux/BSD module source compatibility

--- gnome-keyring-3.16.0/pam/mock-pam.c 2015-07-06 14:02:14.786683308 -0700

+++ gnome-keyring-3.16.0/pam/mock-pam.c 2015-07-06 14:03:45.431087928 -0700

@@ -31,6 +31,14 @@

#include <stdlib.h>

#include <string.h>

+#ifndef PAM_EXTERN

+#ifdef PAM_STATIC

+#define PAM_EXTERN static

+#else

+#define PAM_EXTERN extern

+#endif

+#endif

+

static int

prompt_password (pam_handle_t *ph,

const char *prompt,