Try exported symbols list for Apple

visibility annotations seem to be working for gcc

CMakeLists.txt

@@ -61,10 +61,12 @@ add_custom_command(
     ${CMAKE_OBJCOPY} --keep-global-symbols=${CMAKE_SOURCE_DIR}/symbols.txt
     $<TARGET_FILE:${PROJECT_NAME}_static>)
 
-if(NOT APPLE)
+if(APPLE)
   target_link_options(
-    ${PROJECT_NAME} PRIVATE
-    "LINKER:-export-symbols=${CMAKE_CURRENT_SOURCE_DIR}/linker.map")
+    ${PROJECT_NAME}
+    PRIVATE
+    "LINKER:-no_weak_exports,-exported_symbols_list,${CMAKE_SOURCE_DIR}/symbols.txt"
+  )
 endif()
 
 set(TEST_FLAGS -Wall -Wextra -Wpedantic -Wunreachable-code -UNDEBUG)