cmake: Enable SMB for Windows builds

- Define USE_WIN32_CRYPTO by default. This enables SMB.

- Show whether SMB is enabled in the "Enabled features" output.

- Fix mingw compiler warning for call to CryptHashData by casting away
  const param. mingw CryptHashData prototype is wrong.

Closes https://github.com/curl/curl/pull/4717

2 files changed, 4 insertions, 1 deletions

diff --git a/lib/curl_config.h.cmake b/lib/curl_config.h.cmake
index 2c3b6562d..1f6c3154f 100644
--- a/lib/curl_config.h.cmake
+++ b/lib/curl_config.h.cmake
@@ -73,6 +73,9 @@
 #define CURL_EXTERN_SYMBOL
 #endif
 
+/* Allow SMB to work on Windows */
+#cmakedefine USE_WIN32_CRYPTO
+
 /* Use Windows LDAP implementation */
 #cmakedefine USE_WIN32_LDAP 1
 
diff --git a/lib/md4.c b/lib/md4.c
index bbf897508..98de285ad 100644
--- a/lib/md4.c
+++ b/lib/md4.c
@@ -156,7 +156,7 @@ static void MD4_Init(MD4_CTX *ctx)
 
 static void MD4_Update(MD4_CTX *ctx, const void *data, unsigned long size)
 {
-  CryptHashData(ctx->hHash, data, (unsigned int) size, 0);
+  CryptHashData(ctx->hHash, (BYTE *)data, (unsigned int) size, 0);
 }
 
 static void MD4_Final(unsigned char *result, MD4_CTX *ctx)