fix: add missing deprecation guards
Signed-off-by: Valerio Setti <vsetti@baylibre.com>
diff --git a/programs/x509/cert_write.c b/programs/x509/cert_write.c
index be3464e..f9d5102 100644
--- a/programs/x509/cert_write.c
+++ b/programs/x509/cert_write.c
@@ -723,7 +723,7 @@
mbedtls_x509write_crt_set_version( &crt, opt.version );
mbedtls_x509write_crt_set_md_alg( &crt, opt.md );
-#if defined(MBEDTLS_BIGNUM_C)
+#if defined(MBEDTLS_BIGNUM_C) && !defined(MBEDTLS_DEPRECATED_REMOVED)
ret = mbedtls_x509write_crt_set_serial( &crt, &serial );
if( ret != 0 )
{