diff --git a/sysmoOCTSIM/replace.h b/sysmoOCTSIM/replace.h
new file mode 100644
index 0000000..711f3a5
--- /dev/null
+++ b/sysmoOCTSIM/replace.h
@@ -0,0 +1,27 @@
+#pragma once
+/* whatever talloc 2.1.14 (from Debian talloc-2.1.14-2) required to build it
+ * with gcc-arm-none-eabi on a Debian unstable system */
+
+#include <stdbool.h>
+#include <string.h>
+#include <errno.h>
+#include <limits.h>
+
+#ifndef _PUBLIC_
+#define _PUBLIC_ __attribute__((visibility("default")))
+#endif
+
+#ifndef MIN
+#define MIN(a,b) ((a)<(b)?(a):(b))
+#endif
+
+#ifndef MAX
+#define MAX(a,b) ((a)>(b)?(a):(b))
+#endif
+
+#define TALLOC_BUILD_VERSION_MAJOR 2
+#define TALLOC_BUILD_VERSION_MINOR 1
+#define TALLOC_BUILD_VERSION_RELEASE 14
+
+#define HAVE_VA_COPY
+#define HAVE_CONSTRUCTOR_ATTRIBUTE