sha256: build with OpenSSL < 0.9.8 too

support for SHA-2 was introduced in OpenSSL 0.9.8

Closes #2305

diff --git a/lib/sha256.c b/lib/sha256.c
index cd81c0254158f4d7ba5982f5bd5b6440da01a164..776bd2846dcdae2489b3562334d3a418eb14cbd6 100644 (file)
--- a/lib/sha256.c
+++ b/lib/sha256.c
@@ -27,8 +27,20 @@
 #include "warnless.h"
 #include "curl_sha256.h"
 
+#define USE_OPENSSL_SHA256      0
+
 #if defined(USE_OPENSSL)
 
+#include <openssl/opensslv.h>
+
+#if (OPENSSL_VERSION_NUMBER >= 0x0090800fL)
+#define USE_OPENSSL_SHA256      1
+#endif
+
+#endif
+
+#if USE_OPENSSL_SHA256
+
 /* When OpenSSL is available we use the SHA256-function from OpenSSL */
 #include <openssl/sha.h>