Problem with POCO_DISABLE_INTERNAL_OPENSSL=false on Windows

[Mike-Altwy]

The way headers are written and organized, it is not possible at the moment to compile with this #define (I have retrieved, and updated for 7z 23.01 and VS2022, the https://github.com/pocoproject/openssl repo, that I successfully built and placed inside Poco root folder).
However, when compiling Crypto for example, I get the "External OpenSSL defined but internal headers used - possible mismatch!" message. And it is kind of normal since if we look at the header files, we have (for example when compiling Cipher.cpp):

#include "Poco/Crypto/Cipher.h"
First include in this header is
#include "Poco/Crypto/Crypto.h"

then in Crypto.h we have at the top of the file:
#define POCO_EXTERNAL_OPENSSL_SLPRO 2
and then
#include "Poco/Foundation.h"
which immediately does:
#include "Poco/Config.h"

In Config.h we have:
#if !defined(POCO_EXTERNAL_OPENSSL) && defined(POCO_EXTERNAL_OPENSSL_SLPRO)
#define POCO_EXTERNAL_OPENSSL POCO_EXTERNAL_OPENSSL_SLPRO
#endif

And then with these two lines, although I am launching CMake with POCO_DISABLE_INTERNAL_OPENSSL=false, we have POCO_EXTERNAL_OPENSSL which is now #defined. Then we go back to Crypto.h and the block of code which performs all the #pragma comment(lib, ...) fail with the above message.

For the moment, I have moved the whole block of #pragma comment above #include "Poco/Foundation.h".
Is this the right way to fix the issue or maybe there is something I overlooked?

Thanks!