diff -r 51bf56ba3c10 -r 0bbb006204fc printrun-src/printrun/gcoder_line_extra.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/printrun-src/printrun/gcoder_line_extra.h	Fri Jun 03 09:16:07 2016 +0200
@@ -0,0 +1,30 @@
+typedef int (*NyHeapDef_SizeGetter) (PyObject *obj);
+typedef struct {
+    int flags;			/* As yet, only 0 */
+    PyTypeObject *type;		/* The type it regards */
+    NyHeapDef_SizeGetter size;
+    void *traverse;
+    void *relate;
+    void *resv3, *resv4, *resv5; /* Reserved for future bin. comp. */
+} NyHeapDef;
+
+int gline_size(struct __pyx_obj_8printrun_11gcoder_line_GLine *gline) {
+  int size = __pyx_type_8printrun_11gcoder_line_GLine.tp_basicsize;
+  if (gline->_raw != NULL)
+    size += strlen(gline->_raw) + 1;
+  if (gline->_command != NULL)
+    size += strlen(gline->_command) + 1;
+  return size;
+}
+
+static NyHeapDef nysets_heapdefs[] = {
+    {0, 0, (NyHeapDef_SizeGetter) gline_size},
+};
+
+/*
+  nysets_heapdefs[0].type = &__pyx_type_8printrun_11gcoder_line_GLine;
+  if (PyDict_SetItemString(__pyx_d,
+         "_NyHeapDefs_",
+         PyCObject_FromVoidPtrAndDesc(&nysets_heapdefs, "NyHeapDef[] v1.0", 0)) < 0)
+{__pyx_filename = __pyx_f[0]; __pyx_lineno = 61; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+*/