diff -ur nginx-1.13.8-wolfssl/auto/lib/openssl/conf nginx-1.13.8-wolfssl-debug/auto/lib/openssl/conf
--- nginx-1.13.8-wolfssl/auto/lib/openssl/conf	2018-03-15 09:14:09.334704822 +1000
+++ nginx-1.13.8-wolfssl-debug/auto/lib/openssl/conf	2018-02-02 10:33:24.803654613 +1000
@@ -57,8 +57,7 @@
         ngx_feature="OpenSSL library"
         ngx_feature_name="NGX_OPENSSL"
         ngx_feature_run=no
-        ngx_feature_incs="#include <options.h>
-                          #include <openssl/ssl.h>"
+        ngx_feature_incs="#include <openssl/ssl.h>"
         ngx_feature_path=
         ngx_feature_libs="-lssl -lcrypto $NGX_LIBDL"
         ngx_feature_test="SSL_CTX_set_options(NULL, 0)"
@@ -68,9 +67,9 @@
             ngx_feature_path="$WOLFSSL/include/wolfssl"
 
             if [ $NGX_RPATH = YES ]; then
-                ngx_feature_libs="-R$WOLFSSL/lib -L$WOLFSSL/lib -lwolfssl -lm $NGX_LIBDL"
+                ngx_feature_libs="-R$WOLFSSL/lib -L$WOLFSSL/lib -lwolfssl $NGX_LIBDL"
             else
-                ngx_feature_libs="-L$WOLFSSL/lib -lwolfssl -lm $NGX_LIBDL"
+                ngx_feature_libs="-L$WOLFSSL/lib -lwolfssl $NGX_LIBDL"
             fi
 
             CORE_INCS="$CORE_INCS $WOLFSSL/include/wolfssl"
diff -ur nginx-1.13.8-wolfssl/src/event/ngx_event_openssl.c nginx-1.13.8-wolfssl-debug/src/event/ngx_event_openssl.c
--- nginx-1.13.8-wolfssl/src/event/ngx_event_openssl.c	2018-02-02 10:10:29.701973701 +1000
+++ nginx-1.13.8-wolfssl-debug/src/event/ngx_event_openssl.c	2018-02-02 10:34:24.287926076 +1000
@@ -144,6 +144,11 @@
 
 #endif
 
+#ifdef WOLFSSL_NGINX
+    /* Turn on internal wolfssl debugging to stdout */
+    wolfSSL_Debugging_ON();
+#endif
+
 #if OPENSSL_VERSION_NUMBER >= 0x0090800fL
 #ifndef SSL_OP_NO_COMPRESSION
     {