Define HANDSHAKER_SUPPORTED in once place.

Change-Id: Ie5e41c55e36958af5aabd9e365eb2986a488069e
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/46525
Reviewed-by: Adam Langley <agl@google.com>

ssl/test/bssl_shim.cc

@@ -66,10 +66,6 @@ OPENSSL_MSVC_PRAGMA(comment(lib, "Ws2_32.lib"))
 #include "test_config.h"
 #include "test_state.h"
 
-#if defined(OPENSSL_LINUX) && !defined(OPENSSL_ANDROID)
-#define HANDSHAKER_SUPPORTED
-#endif
-
 
 #if !defined(OPENSSL_WINDOWS)
 static int closesocket(int sock) {

ssl/test/handshake_util.cc

@@ -15,7 +15,7 @@
 #include "handshake_util.h"
 
 #include <assert.h>
-#if defined(OPENSSL_LINUX) && !defined(OPENSSL_ANDROID)
+#if defined(HANDSHAKER_SUPPORTED)
 #include <errno.h>
 #include <fcntl.h>
 #include <spawn.h>
@@ -136,7 +136,7 @@ int CheckIdempotentError(const char *name, SSL *ssl,
   return ret;
 }
 
-#if defined(OPENSSL_LINUX) && !defined(OPENSSL_ANDROID)
+#if defined(HANDSHAKER_SUPPORTED)
 
 // MoveBIOs moves the |BIO|s of |src| to |dst|.  It is used for handoff.
 static void MoveBIOs(SSL *dest, SSL *src) {
@@ -543,4 +543,4 @@ bool DoSplitHandshake(UniquePtr<SSL> *ssl, SettingsWriter *writer,
   return true;
 }
 
-#endif  // defined(OPENSSL_LINUX) && !defined(OPENSSL_ANDROID)
+#endif  // defined(HANDSHAKER_SUPPORTED)

ssl/test/handshake_util.h

@@ -21,6 +21,11 @@
 
 #include "settings_writer.h"
 
+
+#if defined(OPENSSL_LINUX) && !defined(OPENSSL_ANDROID)
+#define HANDSHAKER_SUPPORTED
+#endif
+
 // RetryAsync is called after a failed operation on |ssl| with return code
 // |ret|. If the operation should be retried, it simulates one asynchronous
 // event and returns true. Otherwise it returns false.
@@ -30,6 +35,7 @@ bool RetryAsync(SSL *ssl, int ret);
 // errors are idempotent.
 int CheckIdempotentError(const char *name, SSL *ssl, std::function<int()> func);
 
+#if defined(HANDSHAKER_SUPPORTED)
 // DoSplitHandshake delegates the SSL handshake to a separate process, called
 // the handshaker.  This process proxies I/O between the handshaker and the
 // client, using the |BIO| from |ssl|.  After a successful handshake, |ssl| is
@@ -49,5 +55,6 @@ constexpr char kControlMsgError = 'E';           // Handshaker hit an error
 constexpr int kFdControl = 3;                    // Bi-directional dgram socket.
 constexpr int kFdProxyToHandshaker = 4;          // Uni-directional pipe.
 constexpr int kFdHandshakerToProxy = 5;          // Uni-directional pipe.
+#endif  // HANDSHAKER_SUPPORTED
 
 #endif  // HEADER_TEST_HANDSHAKE