<p><b>@gschorcht</b> commented on this pull request.</p>

<hr>

<p>In <a href="https://github.com/RIOT-OS/RIOT/pull/12135#discussion_r319885057">pkg/libb2/include/libb2_config.h</a>:</p>
<pre style='color:#555'>> +
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Add no suffix to the functions */
+#define SUFFIX
+
+/* Test for a little-endian machine */
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
+#define NATIVE_LITTLE_ENDIAN
+#endif
+
+/* CPUs that don't support unaligned access, taken from GStreamer */
+#if defined(__alpha__) || defined(__arc__) || defined(__arm__) || defined(__aarch64__) || defined(__bfin) || defined(__hppa__) || defined(__nios2__) || defined(__MICROBLAZE__) || defined(__mips__) || defined(__or1k__) || defined(__sh__) || defined(__SH4__) || defined(__sparc__) || defined(__sparc) || defined(__ia64__) || defined(_M_ALPHA) || defined(_M_ARM) || defined(_M_ARM64) || defined(_M_IA64) || defined(__xtensa__) || defined(__e2k__) || defined(__riscv)
+#define HAVE_ALIGNED_ACCESS_REQUIRED
</pre>
<p><a class="user-mention" data-hovercard-type="user" data-hovercard-url="/hovercards?user_id=1301112" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://github.com/benpicco">@benpicco</a> Does this cover all RIOT architectures?</p>

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