diff --git a/vpi/libvpi.c b/vpi/libvpi.c
index 198653112..e86375ec1 100644
--- a/vpi/libvpi.c
+++ b/vpi/libvpi.c
@@ -17,6 +17,8 @@
  *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  */
 
+#if defined(__MINGW32__) || defined (__CYGWIN32__)
+
 #include "vpi_user.h"
 
 vpip_routines_s*vpip_routines = 0;
@@ -25,3 +27,11 @@ DLLEXPORT void vpip_set_callback(vpip_routines_s*routines)
 {
       vpip_routines = routines;
 }
+
+#else
+
+void __libvpi_c_dummy_function(void)
+{
+}
+
+#endif
diff --git a/vpi_modules.cc b/vpi_modules.cc
index 7dca89ab0..b6a5f8e4a 100644
--- a/vpi_modules.cc
+++ b/vpi_modules.cc
@@ -184,6 +184,7 @@ vpiHandle vpi_register_systf(const struct t_vpi_systf_data*ss)
     return 0;
 }
 
+#if defined(__MINGW32__) || defined (__CYGWIN32__)
 vpip_routines_s vpi_routines = {
     .register_cb                = vpi_register_cb,
     .remove_cb                  = vpi_remove_cb,
@@ -229,6 +230,7 @@ vpip_routines_s vpi_routines = {
 };
 
 typedef void (*vpip_set_callback_t)(vpip_routines_s*);
+#endif
 typedef void (*vlog_startup_routines_t)(void);
 
 bool load_vpi_module(const char*path)
@@ -240,6 +242,7 @@ bool load_vpi_module(const char*path)
 	return false;
     }
 
+#if defined(__MINGW32__) || defined (__CYGWIN32__)
     void*function = ivl_dlsym(dll, "vpip_set_callback");
     if (function == 0) {
         cerr << "warning: '" << path << "' has no vpip_set_callback()" << endl;
@@ -248,6 +251,7 @@ bool load_vpi_module(const char*path)
     }
     vpip_set_callback_t set_callback = (vpip_set_callback_t)function;
     set_callback(&vpi_routines);
+#endif
 
     void*table = ivl_dlsym(dll, LU "vlog_startup_routines" TU);
     if (table == 0) {
diff --git a/vpi_user.h b/vpi_user.h
index 7cc30c922..65a7500e2 100644
--- a/vpi_user.h
+++ b/vpi_user.h
@@ -675,6 +675,7 @@ extern void vpip_count_drivers(vpiHandle ref, unsigned idx,
 #   define _vpi_at_APV 6
 #endif
 
+#if defined(__MINGW32__) || defined (__CYGWIN32__)
 /*
  * In Linux, when loaded, a shared library can automatically bind to functions
  * provided by its client. In Windows, a DLL can only do this statically at
@@ -780,6 +781,8 @@ extern vpip_routines_s*vpip_routines;
 
 #endif // IVL_VPI_MODULE
 
+#endif // defined(__MINGW32__) || defined (__CYGWIN32__)
+
 EXTERN_C_END
 
 #endif /* VPI_USER_H */
diff --git a/vvp/vpi_modules.cc b/vvp/vpi_modules.cc
index 1e8ffe945..ac2450944 100644
--- a/vvp/vpi_modules.cc
+++ b/vvp/vpi_modules.cc
@@ -30,7 +30,9 @@
 static ivl_dll_t*dll_list = 0;
 static unsigned dll_list_cnt = 0;
 
+#if defined(__MINGW32__) || defined (__CYGWIN32__)
 typedef void (*vpip_set_callback_t)(vpip_routines_s*);
+#endif
 typedef void (*vlog_startup_routines_t)(void);
 
 # define VPIP_MODULE_PATH_MAX 64
@@ -216,6 +218,7 @@ void vpip_load_module(const char*name)
 	return;
       }
 
+#if defined(__MINGW32__) || defined (__CYGWIN32__)
       void*function = ivl_dlsym(dll, "vpip_set_callback");
       if (function == 0) {
 	    fprintf(stderr, "%s: no vpip_set_callback()\n", name);
@@ -224,6 +227,7 @@ void vpip_load_module(const char*name)
       }
       vpip_set_callback_t set_callback = (vpip_set_callback_t)function;
       set_callback(&vpi_routines);
+#endif
 
       void*table = ivl_dlsym(dll, LU "vlog_startup_routines" TU);
       if (table == 0) {
diff --git a/vvp/vpi_priv.cc b/vvp/vpi_priv.cc
index ba9476f9a..f23a7b7fe 100644
--- a/vvp/vpi_priv.cc
+++ b/vvp/vpi_priv.cc
@@ -1635,6 +1635,7 @@ extern "C" void vpip_count_drivers(vpiHandle ref, unsigned idx,
       rfp->node->count_drivers(idx, counts);
 }
 
+#if defined(__MINGW32__) || defined (__CYGWIN32__)
 vpip_routines_s vpi_routines = {
     .register_cb                = vpi_register_cb,
     .remove_cb                  = vpi_remove_cb,
@@ -1678,3 +1679,4 @@ vpip_routines_s vpi_routines = {
     .mcd_rawwrite               = vpip_mcd_rawwrite,
     .set_return_value           = vpip_set_return_value,
 };
+#endif
diff --git a/vvp/vpi_priv.h b/vvp/vpi_priv.h
index d183135e5..213126183 100644
--- a/vvp/vpi_priv.h
+++ b/vvp/vpi_priv.h
@@ -48,7 +48,9 @@ typedef struct __vpiArray* vvp_array_t;
  * header file elsewhere.
  */
 
+#if defined(__MINGW32__) || defined (__CYGWIN32__)
 extern vpip_routines_s vpi_routines;
+#endif
 
 /*
  * Routines/definitions used to build the file/line number tracing object.