--- CMakeLists.txt.orig	2017-11-23 12:50:06.000000000 +0900
+++ CMakeLists.txt	2017-11-23 12:50:25.000000000 +0900
@@ -11,6 +11,10 @@
 # Search for the required packages
 # ================================
 find_package(KDE4 4.9.4 REQUIRED)
+
+# Remove unwanted flag
+string(REPLACE "-fvisibility=hidden" "" CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS})
+
 include(KDE4Defaults)
 
 find_package(Soprano)