Add visibility rules.
This change marks public symbols as dynamically exported. This means
that it becomes viable to build a shared library of libcrypto and libssl
with -fvisibility=hidden.
On Windows, one not only needs to mark functions for export in a
component, but also for import when using them from a different
component. Because of this we have to build with
|BORINGSSL_IMPLEMENTATION| defined when building the code. Other
components, when including our headers, won't have that defined and then
the |OPENSSL_EXPORT| tag becomes an import tag instead. See the #defines
in base.h
In the asm code, symbols are now hidden by default and those that need
to be exported are wrapped by a C function.
In order to support Chromium, a couple of libssl functions were moved to
ssl.h from ssl_locl.h: ssl_get_new_session and ssl_update_cache.
Change-Id: Ib4b76e2f1983ee066e7806c24721e8626d08a261
Reviewed-on: https://boringssl-review.googlesource.com/1350
Reviewed-by: Adam Langley <agl@google.com>
diff --git a/include/openssl/engine.h b/include/openssl/engine.h
index c97196e..f2916b3 100644
--- a/include/openssl/engine.h
+++ b/include/openssl/engine.h
@@ -37,11 +37,11 @@
/* ENGINE_new returns an empty ENGINE that uses the default method for all
* algorithms. */
-ENGINE *ENGINE_new();
+OPENSSL_EXPORT ENGINE *ENGINE_new();
/* ENGINE_free decrements the reference counts for all methods linked from
* |engine| and frees |engine| itself. */
-void ENGINE_free(ENGINE *engine);
+OPENSSL_EXPORT void ENGINE_free(ENGINE *engine);
/* Method accessors.
@@ -53,21 +53,24 @@
*
* Set functions return one on success and zero on allocation failure. */
-int ENGINE_set_DH_method(ENGINE *engine, const DH_METHOD *method,
- size_t method_size);
-DH_METHOD *ENGINE_get_DH_method(const ENGINE *engine);
+OPENSSL_EXPORT int ENGINE_set_DH_method(ENGINE *engine, const DH_METHOD *method,
+ size_t method_size);
+OPENSSL_EXPORT DH_METHOD *ENGINE_get_DH_method(const ENGINE *engine);
-int ENGINE_set_DSA_method(ENGINE *engine, const DSA_METHOD *method,
- size_t method_size);
-DSA_METHOD *ENGINE_get_DSA_method(const ENGINE *engine);
+OPENSSL_EXPORT int ENGINE_set_DSA_method(ENGINE *engine,
+ const DSA_METHOD *method,
+ size_t method_size);
+OPENSSL_EXPORT DSA_METHOD *ENGINE_get_DSA_method(const ENGINE *engine);
-int ENGINE_set_RSA_method(ENGINE *engine, const RSA_METHOD *method,
- size_t method_size);
-RSA_METHOD *ENGINE_get_RSA_method(const ENGINE *engine);
+OPENSSL_EXPORT int ENGINE_set_RSA_method(ENGINE *engine,
+ const RSA_METHOD *method,
+ size_t method_size);
+OPENSSL_EXPORT RSA_METHOD *ENGINE_get_RSA_method(const ENGINE *engine);
-int ENGINE_set_ECDSA_method(ENGINE *engine, const ECDSA_METHOD *method,
- size_t method_size);
-ECDSA_METHOD *ENGINE_get_ECDSA_method(const ENGINE *engine);
+OPENSSL_EXPORT int ENGINE_set_ECDSA_method(ENGINE *engine,
+ const ECDSA_METHOD *method,
+ size_t method_size);
+OPENSSL_EXPORT ECDSA_METHOD *ENGINE_get_ECDSA_method(const ENGINE *engine);
/* Generic method functions.
@@ -76,11 +79,11 @@
* structures. */
/* METHOD_ref increments the reference count of |method|. */
-void METHOD_ref(void *method);
+OPENSSL_EXPORT void METHOD_ref(void *method);
/* METHOD_unref decrements the reference count of |method| and frees it if the
* reference count drops to zero. */
-void METHOD_unref(void *method);
+OPENSSL_EXPORT void METHOD_unref(void *method);
/* Private functions. */
