Needed to add DL_EXPORT to (redundant?) extern decl of module init function.
diff --git a/Modules/fpectlmodule.c b/Modules/fpectlmodule.c
index ca3a2c9..cc6709f 100644
--- a/Modules/fpectlmodule.c
+++ b/Modules/fpectlmodule.c
@@ -82,7 +82,7 @@
 static void fpe_reset(Sigfunc *);
 
 static PyObject *fpe_error;
-void initfpectl(void);
+DL_EXPORT(void) initfpectl(void);
 static PyObject *turnon_sigfpe            (PyObject *self,PyObject *args);
 static PyObject *turnoff_sigfpe           (PyObject *self,PyObject *args);