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

Added simpledrums2 (from muse_qt4_evolution).

2 files changed, 7 insertions, 2 deletions

diff --git a/muse2/synti/organ/CMakeLists.txt b/muse2/synti/organ/CMakeLists.txt
index 8dd67aa8..40db20c1 100644
--- a/muse2/synti/organ/CMakeLists.txt
+++ b/muse2/synti/organ/CMakeLists.txt
@@ -40,7 +40,7 @@ add_library ( organ SHARED
 #
 set_target_properties ( organ
    PROPERTIES PREFIX ""
-   COMPILE_FLAGS "-O2 -include ${PROJECT_BINARY_DIR}/all-pic.h"
+   COMPILE_FLAGS "-fvisibility=hidden -O2 -include ${PROJECT_BINARY_DIR}/all-pic.h"
    )
 
 target_link_libraries(organ
diff --git a/muse2/synti/organ/organ.cpp b/muse2/synti/organ/organ.cpp
index a1788a6c..2dede8de 100644
--- a/muse2/synti/organ/organ.cpp
+++ b/muse2/synti/organ/organ.cpp
@@ -704,7 +704,12 @@ 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; }
       }