Remove #error from include files.
Don't have #error statements in header files, but instead wrap
the contents of that file in #ifndef OPENSSL_NO_xxx
This means it is now always safe to include the header file.
Reviewed-by: Richard Levitte <levitte@openssl.org>
diff --git a/crypto/ec/ec_key.c b/crypto/ec/ec_key.c
index 0d7370e..d241154 100644
--- a/crypto/ec/ec_key.c
+++ b/crypto/ec/ec_key.c
@@ -64,9 +64,7 @@
#include <string.h>
#include "ec_lcl.h"
#include <openssl/err.h>
-#ifndef OPENSSL_NO_ENGINE
-# include <openssl/engine.h>
-#endif
+#include <openssl/engine.h>
EC_KEY *EC_KEY_new(void)
{
