Add some library versioning.

---
 CMakeLists.txt |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Index: SDL_bgi-2.6.0/CMakeLists.txt
===================================================================
--- SDL_bgi-2.6.0.orig/CMakeLists.txt
+++ SDL_bgi-2.6.0/CMakeLists.txt
@@ -32,8 +32,9 @@ include_directories (src)
 
 # Create shared library
 add_library (${PROJECT_NAME} SHARED ${SOURCES})
+set_target_properties(${PROJECT_NAME} PROPERTIES SOVERSION suse9)
 # fix provided by Austin Hurst
-target_link_libraries (SDL_bgi ${SDL2_LIBRARIES})
+target_link_libraries (SDL_bgi -lm ${SDL2_LIBRARIES})
 
 # Install library
 install (TARGETS ${PROJECT_NAME}