illumos linker does not support version-script syntax.

--- libayatana-appindicator-0.5.93/src/CMakeLists.txt.orig	2023-10-13 08:43:42.000000000 +0200
+++ libayatana-appindicator-0.5.93/src/CMakeLists.txt	2023-10-14 11:48:43.528302550 +0200
@@ -125,7 +125,6 @@
 target_include_directories("${ayatana_appindicator_gtkver}" PUBLIC ${CMAKE_CURRENT_BINARY_DIR})
 target_include_directories("${ayatana_appindicator_gtkver}" PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})
 target_link_libraries("${ayatana_appindicator_gtkver}" ${PROJECT_DEPS_LIBRARIES})
-target_link_options ("${ayatana_appindicator_gtkver}" PRIVATE "-Wl,--version-script=${CMAKE_CURRENT_SOURCE_DIR}/app-indicator.symbols")
 install(TARGETS "${ayatana_appindicator_gtkver}" LIBRARY DESTINATION "${CMAKE_INSTALL_FULL_LIBDIR}")
 
 # AyatanaAppIndicator{,3}-0.1.gir