I did this

I am trying to build a curl library using the mbedtls library. In mbedtls has disable run-time version information (comment MBEDTLS_VERSION_C). The Curl_mbedtls_version function refers to the mbedtls_version_get_number function, which is disabled. As a result, it is not possible to build a project.

I expected the following

Build succeeded.

Perhaps using the MBEDTLS_VERSION_STRING may solve this problem:
return msnprintf(buffer, size, "mbedTLS/%s", MBEDTLS_VERSION_STRING);

curl/libcurl version

[curl -V output]
curl 7.64.0 mbedTls/2.7.9
Release-Date: 2019-02-06
Protocols: http

operating system

Embedded system.