https://github.com/SpectrumIM/spectrum2/pull/519
--- a/spectrum/src/CMakeLists.txt
+++ b/spectrum/src/CMakeLists.txt
@@ -20,7 +20,7 @@ target_link_libraries(spectrum2 transport spectrum2-xmpp-frontend spectrum2-slac
 
 if(NOT MSVC AND NOT APPLE)
 	# export all symbols (used for loading frontends)
-	set(CMAKE_EXE_LINKER_FLAGS "-Wl,-export-dynamic")
+	set(CMAKE_EXE_LINKER_FLAGS "-Wl,--export-dynamic")
 endif()
 
 install(TARGETS spectrum2 RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})