diff --git a/configs/baremetal.h b/configs/baremetal.h
index 37e2444..399b6e5 100644
--- a/configs/baremetal.h
+++ b/configs/baremetal.h
@@ -80,6 +80,7 @@
 #define MBEDTLS_SSL_DTLS_CONNECTION_ID
 
 /* Compile-time fixed parts of the SSL configuration */
+#define MBEDTLS_SSL_CONF_CERT_REQ_CA_LIST MBEDTLS_SSL_CERT_REQ_CA_LIST_ENABLED
 #define MBEDTLS_SSL_CONF_READ_TIMEOUT 0
 #define MBEDTLS_SSL_CONF_HS_TIMEOUT_MIN 1000
 #define MBEDTLS_SSL_CONF_HS_TIMEOUT_MAX 16000
diff --git a/include/mbedtls/config.h b/include/mbedtls/config.h
index fcb92f2..3e70260 100644
--- a/include/mbedtls/config.h
+++ b/include/mbedtls/config.h
@@ -3458,7 +3458,9 @@
 //#define MBEDTLS_SSL_CONF_READ_TIMEOUT 0
 
 /* Endpoint (Client/Server) */
-//#define MBEDTLS_SSL_CONF_ENDPOINT MBED
+//#define MBEDTLS_SSL_CONF_ENDPOINT MBEDTLS_SSL_IS_CLIENT
+
+//#define MBEDTLS_SSL_CONF_CERT_REQ_CA_LIST MBEDTLS_SSL_CERT_REQ_CA_LIST_ENABLED
 
 /* DTLS-specific settings */
 //#define MBEDTLS_SSL_CONF_HS_TIMEOUT_MIN MBEDTLS_SSL_DTLS_TIMEOUT_DFL_MIN
diff --git a/include/mbedtls/ssl.h b/include/mbedtls/ssl.h
index 86759e5..7c5cadc 100644
--- a/include/mbedtls/ssl.h
+++ b/include/mbedtls/ssl.h
@@ -1106,8 +1106,10 @@
     unsigned int fallback : 1;      /*!< is this a fallback?                */
 #endif
 #if defined(MBEDTLS_SSL_SRV_C)
+#if !defined(MBEDTLS_SSL_CONF_CERT_REQ_CA_LIST)
     unsigned int cert_req_ca_list : 1;  /*!< enable sending CA list in
                                           Certificate Request messages?     */
+#endif /* !MBEDTLS_SSL_CONF_CERT_REQ_CA_LIST */
 #endif
 #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
 #if !defined(MBEDTLS_SSL_CONF_IGNORE_UNEXPECTED_CID)
@@ -2965,19 +2967,22 @@
 void mbedtls_ssl_conf_arc4_support( mbedtls_ssl_config *conf, char arc4 );
 #endif /* MBEDTLS_ARC4_C */
 
-#if defined(MBEDTLS_SSL_SRV_C)
+#if defined(MBEDTLS_SSL_SRV_C) && !defined(MBEDTLS_SSL_CONF_CERT_REQ_CA_LIST)
 /**
  * \brief          Whether to send a list of acceptable CAs in
  *                 CertificateRequest messages.
  *                 (Default: do send)
  *
+ * \note           On constrained systems, this options can also be configured
+ *                 at compile-time via MBEDTLS_SSL_CONF_CERT_REQ_CA_LIST.
+ *
  * \param conf     SSL configuration
  * \param cert_req_ca_list   MBEDTLS_SSL_CERT_REQ_CA_LIST_ENABLED or
  *                          MBEDTLS_SSL_CERT_REQ_CA_LIST_DISABLED
  */
 void mbedtls_ssl_conf_cert_req_ca_list( mbedtls_ssl_config *conf,
                                           char cert_req_ca_list );
-#endif /* MBEDTLS_SSL_SRV_C */
+#endif /* MBEDTLS_SSL_SRV_C && !MBEDTLS_SSL_CONF_CERT_REQ_CA_LIST */
 
 #if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
 /**
diff --git a/include/mbedtls/ssl_internal.h b/include/mbedtls/ssl_internal.h
index b08aae2..138b6fd 100644
--- a/include/mbedtls/ssl_internal.h
+++ b/include/mbedtls/ssl_internal.h
@@ -1085,6 +1085,23 @@
  * be fixed at compile time via one of MBEDTLS_SSL_SSL_CONF_XXX.
  */
 
+#if defined(MBEDTLS_SSL_SRV_C)
+#if !defined(MBEDTLS_SSL_CONF_CERT_REQ_CA_LIST)
+static inline unsigned int mbedtls_ssl_conf_get_cert_req_ca_list(
+    mbedtls_ssl_config  const *conf )
+{
+    return( conf->cert_req_ca_list );
+}
+#else /* !MBEDTLS_SSL_CONF_CERT_REQ_CA_LIST */
+static inline unsigned int mbedtls_ssl_conf_get_cert_req_ca_list(
+    mbedtls_ssl_config  const *conf )
+{
+    ((void) conf);
+    return( MBEDTLS_SSL_CONF_CERT_REQ_CA_LIST );
+}
+#endif /* MBEDTLS_SSL_CONF_CERT_REQ_CA_LIST */
+#endif /* MBEDTLS_SSL_SRV_C */
+
 #if !defined(MBEDTLS_SSL_CONF_ENDPOINT)
 static inline unsigned int mbedtls_ssl_conf_get_endpoint(
     mbedtls_ssl_config  const *conf )
diff --git a/library/ssl_srv.c b/library/ssl_srv.c
index b6b7750..f8d2ec4 100644
--- a/library/ssl_srv.c
+++ b/library/ssl_srv.c
@@ -2947,7 +2947,8 @@
 
     total_dn_size = 0;
 
-    if( ssl->conf->cert_req_ca_list ==  MBEDTLS_SSL_CERT_REQ_CA_LIST_ENABLED )
+    if( mbedtls_ssl_conf_get_cert_req_ca_list( ssl->conf )
+        == MBEDTLS_SSL_CERT_REQ_CA_LIST_ENABLED )
     {
 #if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION)
         if( ssl->handshake->sni_ca_chain != NULL )
diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index cfd6589..dc0eaf9 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -8665,7 +8665,7 @@
 }
 #endif
 
-#if defined(MBEDTLS_SSL_SRV_C)
+#if defined(MBEDTLS_SSL_SRV_C) && !defined(MBEDTLS_SSL_CONF_CERT_REQ_CA_LIST)
 void mbedtls_ssl_conf_cert_req_ca_list( mbedtls_ssl_config *conf,
                                           char cert_req_ca_list )
 {
@@ -10829,8 +10829,10 @@
 #endif
 
 #if defined(MBEDTLS_SSL_SRV_C)
+#if !defined(MBEDTLS_SSL_CONF_CERT_REQ_CA_LIST)
     conf->cert_req_ca_list = MBEDTLS_SSL_CERT_REQ_CA_LIST_ENABLED;
-#endif
+#endif /* !MBEDTLS_SSL_CONF_CERT_REQ_CA_LIST */
+#endif /* MBEDTLS_SSL_SRV_C */
 
 #if defined(MBEDTLS_SSL_PROTO_DTLS)
 #if !defined(MBEDTLS_SSL_CONF_HS_TIMEOUT_MIN)
diff --git a/programs/ssl/query_config.c b/programs/ssl/query_config.c
index 29b778c..bcdafb6 100644
--- a/programs/ssl/query_config.c
+++ b/programs/ssl/query_config.c
@@ -2610,6 +2610,14 @@
     }
 #endif /* MBEDTLS_SSL_CONF_ENDPOINT */
 
+#if defined(MBEDTLS_SSL_CONF_CERT_REQ_CA_LIST)
+    if( strcmp( "MBEDTLS_SSL_CONF_CERT_REQ_CA_LIST", config ) == 0 )
+    {
+        MACRO_EXPANSION_TO_STR( MBEDTLS_SSL_CONF_CERT_REQ_CA_LIST );
+        return( 0 );
+    }
+#endif /* MBEDTLS_SSL_CONF_CERT_REQ_CA_LIST */
+
 #if defined(MBEDTLS_SSL_CONF_HS_TIMEOUT_MIN)
     if( strcmp( "MBEDTLS_SSL_CONF_HS_TIMEOUT_MIN", config ) == 0 )
     {
diff --git a/programs/ssl/ssl_server2.c b/programs/ssl/ssl_server2.c
index 707660f..5fbbddd 100644
--- a/programs/ssl/ssl_server2.c
+++ b/programs/ssl/ssl_server2.c
@@ -422,6 +422,14 @@
 #define USAGE_READ_TIMEOUT ""
 #endif
 
+#if !defined(MBEDTLS_SSL_CONF_CERT_REQ_CA_LIST)
+#define USAGE_CERT_REQ_CA_LIST                              \
+    "    cert_req_ca_list=%%d default: 1 (send ca list)\n"  \
+    "                        options: 1 (send ca list), 0 (don't send)\n"
+#else
+#define USAGE_CERT_REQ_CA_LIST ""
+#endif
+
 #define USAGE \
     "\n usage: ssl_server2 param=<>...\n"                   \
     "\n acceptable parameters:\n"                           \
@@ -445,8 +453,7 @@
     USAGE_BADMAC_LIMIT                                      \
     "\n"                                                    \
     USAGE_AUTH_MODE                                         \
-    "    cert_req_ca_list=%%d default: 1 (send ca list)\n"  \
-    "                        options: 1 (send ca list), 0 (don't send)\n" \
+    USAGE_CERT_REQ_CA_LIST                                  \
     USAGE_IO                                                \
     USAGE_SSL_ASYNC                                         \
     USAGE_SNI                                               \
@@ -2479,8 +2486,10 @@
         mbedtls_ssl_conf_authmode( &conf, opt.auth_mode );
 #endif /* !MBEDTLS_SSL_CONF_AUTHMODE */
 
+#if !defined(MBEDTLS_SSL_CONF_CERT_REQ_CA_LIST)
     if( opt.cert_req_ca_list != DFL_CERT_REQ_CA_LIST )
         mbedtls_ssl_conf_cert_req_ca_list( &conf, opt.cert_req_ca_list );
+#endif
 
 #if defined(MBEDTLS_SSL_PROTO_DTLS)
     if( opt.hs_to_min != DFL_HS_TO_MIN || opt.hs_to_max != DFL_HS_TO_MAX )