Add BOTAN_DLL macro in all needed spots for working DLL export. Based

on a patch from Joel Low for MSVC, modified and tested with GCC using
-fvisibility=hidden and the visibility attribute.

Getting this working completely requires making the shared object and
static lib builds completely distinct (which is also a win since it
allows avoiding -fPIC usage, etc in the static lib).

Currently too many things are being exported, though it is an improvement
as internal-only code like the bigint_* functions are hidden.

1 files changed, 2 insertions, 2 deletions

diff --git a/include/engine.h b/include/engine.h
index 55b76895a..13007e662 100644
--- a/include/engine.h
+++ b/include/engine.h
@@ -20,11 +20,11 @@ namespace Botan {
 /*************************************************
 * Engine Base Class                              *
 *************************************************/
-class Engine
+class BOTAN_DLL Engine
    {
    public:
       template<typename T>
-      class Algorithm_Cache
+      class BOTAN_DLL Algorithm_Cache
          {
          public:
             virtual T* get(const std::string&) const = 0;