Index: CMakeLists.txt
--- CMakeLists.txt.orig
+++ CMakeLists.txt
@@ -3,7 +3,7 @@ project(fcitx5-gtk VERSION 5.0.10)
 
 find_package(ECM REQUIRED 1.0.0)
 set(CMAKE_MODULE_PATH ${ECM_MODULE_PATH} "${CMAKE_CURRENT_SOURCE_DIR}/cmake" ${CMAKE_MODULE_PATH})
-
+set(CMAKE_SHARED_LINKER_FLAGS "-lm ${CMAKE_SHARED_LINKER_FLAGS}")
 include(FindPkgConfig)
 include(ECMSetupVersion)
 include(GenerateExportHeader)