Avoid build errors with -O0 due to assembly
diff --git a/ChangeLog b/ChangeLog
index 0f81efe..c153a7b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -8,6 +8,11 @@
Follath. #309
* Fix issue in Makefile that prevented building using armar. #386
+Changes
+ * On ARM platforms, when compiling with -O0 with GCC, Clang or armcc5,
+ don't use the optimized assembly for bignum multiplication. This removes
+ the need to pass -fomit-frame-pointer to avoid a build error with -O0.
+
= mbed TLS 1.3.16 released 2016-01-05
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