stop warnings about no previous prototype when compiling shared engines

crypto/engine/engine.h

@@ -678,6 +678,7 @@ typedef struct st_dynamic_fns {
  * can be fully instantiated with IMPLEMENT_DYNAMIC_CHECK_FN(). */
 typedef unsigned long (*dynamic_v_check_fn)(unsigned long ossl_version);
 #define IMPLEMENT_DYNAMIC_CHECK_FN() \
+	OPENSSL_EXPORT unsigned long v_check(unsigned long v); \
 	OPENSSL_EXPORT unsigned long v_check(unsigned long v) { \
 		if(v >= OSSL_DYNAMIC_OLDEST) return OSSL_DYNAMIC_VERSION; \
 		return 0; }
@@ -700,6 +701,8 @@ typedef unsigned long (*dynamic_v_check_fn)(unsigned long ossl_version);
 typedef int (*dynamic_bind_engine)(ENGINE *e, const char *id,
 				const dynamic_fns *fns);
 #define IMPLEMENT_DYNAMIC_BIND_FN(fn) \
+	OPENSSL_EXPORT \
+	int bind_engine(ENGINE *e, const char *id, const dynamic_fns *fns); \
 	OPENSSL_EXPORT \
 	int bind_engine(ENGINE *e, const char *id, const dynamic_fns *fns) { \
 		if(ENGINE_get_static_state() == fns->static_state) goto skip_cbs; \

engines/e_capi.c

@@ -1886,6 +1886,8 @@ static int cert_select_dialog(ENGINE *e, SSL *ssl, STACK_OF(X509) *certs)
 #include <openssl/engine.h>
 #ifndef OPENSSL_NO_DYNAMIC_ENGINE
 OPENSSL_EXPORT
+int bind_engine(ENGINE *e, const char *id, const dynamic_fns *fns);
+OPENSSL_EXPORT
 int bind_engine(ENGINE *e, const char *id, const dynamic_fns *fns) { return 0; }
 IMPLEMENT_DYNAMIC_CHECK_FN()
 #else

engines/e_gmp.c

@@ -471,6 +471,8 @@ static int bind_fn(ENGINE *e, const char *id)
 IMPLEMENT_DYNAMIC_BIND_FN(bind_fn)
 #else
 OPENSSL_EXPORT
+int bind_engine(ENGINE *e, const char *id, const dynamic_fns *fns);
+OPENSSL_EXPORT
 int bind_engine(ENGINE *e, const char *id, const dynamic_fns *fns) { return 0; }
 #endif
 #endif /* !OPENSSL_NO_DYNAMIC_ENGINE */

engines/e_padlock.c

@@ -107,10 +107,14 @@
      ) || \
      (defined(_MSC_VER) && defined(_M_IX86))
 #  define COMPILE_HW_PADLOCK
+#  ifdef OPENSSL_NO_DYNAMIC_ENGINE
 static ENGINE *ENGINE_padlock (void);
+#  endif
 # endif
 #endif
 
+#ifdef OPENSSL_NO_DYNAMIC_ENGINE
+
 void ENGINE_load_padlock (void)
 {
 /* On non-x86 CPUs it just returns. */
@@ -123,6 +127,8 @@ void ENGINE_load_padlock (void)
 #endif
 }
 
+#endif
+
 #ifdef COMPILE_HW_PADLOCK
 /* We do these includes here to avoid header problems on platforms that
    do not have the VIA padlock anyway... */
@@ -196,6 +202,7 @@ padlock_bind_helper(ENGINE *e)
 	return 1;
 }
 
+#ifdef OPENSSL_NO_DYNAMIC_ENGINE
 /* Constructor */
 static ENGINE *
 ENGINE_padlock(void)
@@ -213,6 +220,7 @@ ENGINE_padlock(void)
 
 	return eng;
 }
+#endif
 
 /* Check availability of the engine */
 static int
@@ -1322,6 +1330,8 @@ static RAND_METHOD padlock_rand = {
 #else  /* !COMPILE_HW_PADLOCK */
 #ifndef OPENSSL_NO_DYNAMIC_ENGINE
 OPENSSL_EXPORT
+int bind_engine(ENGINE *e, const char *id, const dynamic_fns *fns);
+OPENSSL_EXPORT
 int bind_engine(ENGINE *e, const char *id, const dynamic_fns *fns) { return 0; }
 IMPLEMENT_DYNAMIC_CHECK_FN()
 #endif