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

Added simpledrums2 (from muse_qt4_evolution).

2 files changed, 10 insertions, 2 deletions

diff --git a/muse2/synti/s1/CMakeLists.txt b/muse2/synti/s1/CMakeLists.txt
index 890c6b12..7dffe905 100644
--- a/muse2/synti/s1/CMakeLists.txt
+++ b/muse2/synti/s1/CMakeLists.txt
@@ -25,7 +25,10 @@ add_library ( s1 SHARED s1.cpp )
 # tell cmake to name target s1.so instead of 
 # libs1.so
 #
-set_target_properties ( s1 PROPERTIES PREFIX "" )
+set_target_properties ( s1 
+  PROPERTIES PREFIX "" 
+  COMPILE_FLAGS "-fvisibility=hidden"
+  )
 
 target_link_libraries(s1
       synti
diff --git a/muse2/synti/s1/s1.cpp b/muse2/synti/s1/s1.cpp
index c73615bd..8520a742 100644
--- a/muse2/synti/s1/s1.cpp
+++ b/muse2/synti/s1/s1.cpp
@@ -221,7 +221,12 @@ 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; }
       }