diff --git a/SPECS/ffi-multilib.h b/SPECS/ffi-multilib.h
new file mode 100644
index 0000000..50a6226
--- /dev/null
+++ b/SPECS/ffi-multilib.h
@@ -0,0 +1,23 @@
+/* This file is here to prevent a file conflict on multiarch systems. */
+#ifdef ffi_wrapper_h
+#error "Do not define ffi_wrapper_h!"
+#endif
+#define ffi_wrapper_h
+
+#if defined(__i386__)
+#include "ffi-i386.h"
+#elif defined(__powerpc64__)
+#include "ffi-ppc64.h"
+#elif defined(__powerpc__)
+#include "ffi-ppc.h"
+#elif defined(__s390x__)
+#include "ffi-s390x.h"
+#elif defined(__s390__)
+#include "ffi-s390.h"
+#elif defined(__x86_64__)
+#include "ffi-x86_64.h"
+#else
+#error "The libffi-devel package is not usable with the architecture."
+#endif
+
+#undef ffi_wrapper_h
diff --git a/SPECS/ffitarget-multilib.h b/SPECS/ffitarget-multilib.h
new file mode 100644
index 0000000..b2ed545
--- /dev/null
+++ b/SPECS/ffitarget-multilib.h
@@ -0,0 +1,23 @@
+/* This file is here to prevent a file conflict on multiarch systems. */
+#ifdef ffitarget_wrapper_h
+#error "Do not define ffitarget_wrapper_h!"
+#endif
+#define ffitarget_wrapper_h
+
+#if defined(__i386__)
+#include "ffitarget-i386.h"
+#elif defined(__powerpc64__)
+#include "ffitarget-ppc64.h"
+#elif defined(__powerpc__)
+#include "ffitarget-ppc.h"
+#elif defined(__s390x__)
+#include "ffitarget-s390x.h"
+#elif defined(__s390__)
+#include "ffitarget-s390.h"
+#elif defined(__x86_64__)
+#include "ffitarget-x86_64.h"
+#else
+#error "The libffi-devel package is not usable with the architecture."
+#endif
+
+#undef ffitarget_wrapper_h
diff --git a/SPECS/libffi-3.1.tar.gz b/SPECS/libffi-3.1.tar.gz
new file mode 100644
index 0000000..fed33dc
Binary files /dev/null and b/SPECS/libffi-3.1.tar.gz differ