### Configure Mbed TLS User Configuration File

Source: https://github.com/infineon/modustoolbox-software/blob/master/run-time-sw.md

Specify the location of the Mbed TLS user configuration file in the application's Makefile. This is required when using a custom mbedtls_user_config.h file.

```makefile
DEFINES+=MBEDTLS_USER_CONFIG_FILE='"mbedtls_user_config.h"'
```

```makefile
MBEDTLSFLAGS = MBEDTLS_USER_CONFIG_FILE='"mbedtls_user_config.h"'
DEFINES+=$(MBEDTLSFLAGS)
```

--------------------------------

### Disable Mbed TLS Feature for Memory Optimization

Source: https://github.com/infineon/modustoolbox-software/blob/master/run-time-sw.md

Disable specific Mbed TLS features, such as MBEDTLS_SSL_SRV_C, by undefining the corresponding macro to reduce flash usage on smaller devices.

```c
#undef MBEDTLS_SSL_SRV_C
```

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