Avoid build failure due to harmless warnings on some platforms (eg. ARM) being
forced fatal.

--- cmake/modules/FindKDE4Internal.cmake
+++ cmake/modules/FindKDE4Internal.cmake
@@ -1100,8 +1100,8 @@
 if (CMAKE_SYSTEM_NAME MATCHES Linux OR CMAKE_SYSTEM_NAME STREQUAL GNU)
    if (CMAKE_COMPILER_IS_GNUCXX OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
       set ( _KDE4_PLATFORM_DEFINITIONS -D_XOPEN_SOURCE=500 -D_DEFAULT_SOURCE -D_BSD_SOURCE -D_GNU_SOURCE)
-      set ( CMAKE_SHARED_LINKER_FLAGS "-Wl,--fatal-warnings -Wl,--no-undefined -lc ${CMAKE_SHARED_LINKER_FLAGS}")
-      set ( CMAKE_MODULE_LINKER_FLAGS "-Wl,--fatal-warnings -Wl,--no-undefined -lc ${CMAKE_MODULE_LINKER_FLAGS}")
+      set ( CMAKE_SHARED_LINKER_FLAGS "-Wl,--no-undefined -lc ${CMAKE_SHARED_LINKER_FLAGS}")
+      set ( CMAKE_MODULE_LINKER_FLAGS "-Wl,--no-undefined -lc ${CMAKE_MODULE_LINKER_FLAGS}")
 
       set ( CMAKE_SHARED_LINKER_FLAGS "-Wl,--enable-new-dtags ${CMAKE_SHARED_LINKER_FLAGS}")
       set ( CMAKE_MODULE_LINKER_FLAGS "-Wl,--enable-new-dtags ${CMAKE_MODULE_LINKER_FLAGS}")