From b5873137387e778af7c6057762a71d83c5768dd1 Mon Sep 17 00:00:00 2001
From: Steven Cooreman <steven.cooreman@silabs.com>
Date: Thu, 21 Jan 2021 13:59:17 +0100
Subject: [PATCH] Doesn't make sense to have ECP_NO_FALLBACK when there's no
 ECP_INTERNAL_ALT.

Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
---
 include/mbedtls/check_config.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/include/mbedtls/check_config.h b/include/mbedtls/check_config.h
index accf51e321..1014bd83f1 100644
--- a/include/mbedtls/check_config.h
+++ b/include/mbedtls/check_config.h
@@ -252,6 +252,10 @@
 #error "MBEDTLS_ECP_NORMALIZE_MXZ_ALT defined, but not all prerequisites"
 #endif
 
+#if defined(MBEDTLS_ECP_NO_FALLBACK) && !defined(MBEDTLS_ECP_INTERNAL_ALT)
+#error "MBEDTLS_ECP_NO_FALLBACK defined, but no alternative implementation enabled"
+#endif
+
 #if defined(MBEDTLS_HAVEGE_C) && !defined(MBEDTLS_TIMING_C)
 #error "MBEDTLS_HAVEGE_C defined, but not all prerequisites"
 #endif