[release][fs1650][cmake] Add -Wl,-no-as-needed to the linker flags if we are

on Ubuntu.

(cherry picked from commit 71e08e51)
Signed-off-by: Carsten Gräser <graeser@dune-project.org>

cmake/modules/CheckCXX11Features.cmake

@@ -304,8 +304,16 @@ if(${CMAKE_VERSION} VERSION_LESS "3.1")
 else()
   find_package(Threads)
 endif()
-set(STDTHREAD_LINK_FLAGS "${CMAKE_THREAD_LIBS_INIT}"
-    CACHE STRING "Linker flags needed to get working C++11 threads support")
+
+# see whether threading needs -no-as-needed
+if(EXISTS /etc/dpkg/origins/ubuntu)
+  set(NO_AS_NEEDED "-Wl,-no-as-needed")
+else(EXISTS /etc/dpkg/origins/ubuntu)
+  set(NO_AS_NEEDED "")
+endif(EXISTS /etc/dpkg/origins/ubuntu)
+
+set(STDTHREAD_LINK_FLAGS "${NO_AS_NEEDED} ${CMAKE_THREAD_LIBS_INIT}"
+    CACHE STRING "Linker flags needed to get working C++11 threads support.  On Ubuntu it may be necessary to include -Wl,-no-as-needed (see FS#1650).")
 
 # set linker flags
 #