### ALL ###
Follow the porting instructions here: https://wiki.tizen.org/Security/Tizen_5.X_Migration_from_OpenSSL_1.0.2_to_OpenSSL_1.1.1_guide

Especially the section "EVP_CIPHER_CTX became opaque". The changes here will match changes for most classes in OpenSSL.

Most notable:
Declaration:
	-	EVP_CIPHER_CTX  evp;
	+	EVP_CIPHER_CTX  *evp;
Initialization & cleanup:
	-	EVP_CIPHER_CTX_init(&evp);
	+	evp = EVP_CIPHER_CTX_new();
	+	EVP_CIPHER_CTX_free(evp);	/* do not forget to free after usage or error */
Function calling:
	-	EVP_CipherInit(&evp, EVP_des_cbc(), k1, NULL, enc);
	+	EVP_CipherInit(evp, EVP_des_cbc(), k1, NULL, enc);

Note the change to using a pointer instead of directly.

For encoding/decoding, the init() step is stil needed.

-    EVP_EncodeInit(&m_evpCtx);
+    m_evpCtx = EVP_ENCODE_CTX_new();
+    EVP_EncodeInit(m_evpCtx);

More changes:

		X509_EXTENSION *ext = X509_get_ext(peer, i);
		const unsigned char *data;

	-	data = ext->value->data;
	+	data = ASN1_STRING_get0_data(X509_EXTENSION_get_data(ext));

	-	ext_data = meth->d2i(NULL, &data, ext->value->length);
	+	ext_data = meth->d2i(NULL, &data, ASN1_STRING_length(X509_EXTENSION_get_data(ext)));

xmlsec.h(99): warning C4005: 'XMLSEC_CRYPTO': macro redefinition
/**
 * XMLSEC_CRYPTO:
 *
 * Macro. Deprecated. Defined for backward compatibility only. Do not use
 * in your code and use xmlSecGetDefaultCrypto() function instead.
 *
 * Returns the default crypto engine.
 */
#define XMLSEC_CRYPTO                          (xmlSecGetDefaultCrypto())

### WINDOWS ###
ws2_32.lib will need to replace wsock32.lib when linking, or be added to link if not there.

ZLIB_WINAPI may be defined with some OSS (like curl), this causes link errors and should be removed.

### LINUX ###
Linux will likley need to link with -lpthread
Some apps may need -lrt