All MESS plugins: compile with -fvisibility=hidden, fixes LADSPA plugins not appearing in list.

Added simpledrums2 (from muse_qt4_evolution).

1 files changed, 6 insertions, 1 deletions

diff --git a/muse2/synti/vam/vam.cpp b/muse2/synti/vam/vam.cpp
index 95b80c13..9d0d6e30 100644
--- a/muse2/synti/vam/vam.cpp
+++ b/muse2/synti/vam/vam.cpp
@@ -1044,7 +1044,12 @@ extern "C" {
             MESS_MAJOR_VERSION, MESS_MINOR_VERSION,
             instantiate,
             };
-
+      // We must compile with -fvisibility=hidden to avoid namespace
+      // conflicts with global variables.
+      // Only visible symbol is "mess_descriptor".
+      // (TODO: all plugins should be compiled this way)
+  
+      __attribute__ ((visibility("default")))
       const MESS* mess_descriptor() { return &descriptor; }
       }