Add symbol versioning

Add symbol versioning to the roctracer64 and roctx64 library, and only
expose the OnLoad and OnUnload tracer_tool symbols.

Change-Id: I7f160fc3e568567fd1146ff5b9c0aef3bdcccf53

test/CMakeLists.txt

@@ -78,7 +78,8 @@ if(DEFINED ROCTRACER_TARGET)
   target_compile_definitions(roctracer_tool PRIVATE HIP_PROF_HIP_API_STRING=1 __HIP_PLATFORM_HCC__)
   target_include_directories(roctracer_tool PRIVATE hsa/test ${PROJECT_SOURCE_DIR} ${PROJECT_SOURCE_DIR}/inc ${HIP_INCLUDE_DIRECTORIES} ${GEN_INC_DIR})
   target_link_libraries(roctracer_tool ${ROCTRACER_TARGET} hsa-runtime64::hsa-runtime64 Threads::Threads atomic dl)
-  set_target_properties(roctracer_tool PROPERTIES CXX_VISIBILITY_PRESET hidden)
+  set_target_properties(roctracer_tool PROPERTIES CXX_VISIBILITY_PRESET hidden LINK_DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/tool/exportmap)
+  target_link_options(roctracer_tool PRIVATE -Wl,--version-script=${CMAKE_CURRENT_SOURCE_DIR}/tool/exportmap -Wl,--no-undefined)
   install(TARGETS roctracer_tool LIBRARY DESTINATION lib/${ROCTRACER_NAME})
 endif ()
 

test/tool/exportmap

@@ -0,0 +1 @@
+{ global: OnLoad; OnUnload; local: *; };