From Pere: CMake fix for libRuby dependencies

git-svn-id: http://root.cern.ch/svn/root/trunk@42933 27541ba8-7e3a-0410-8455-c3a389f83636

bindings/ruby/CMakeLists.txt

@@ -8,7 +8,7 @@ include_directories(${RUBY_INCLUDE_DIRS})
 ROOT_GENERATE_DICTIONARY(G__Ruby *.h LINKDEF LinkDef.h)
 ROOT_GENERATE_ROOTMAP(Ruby LINKDEF LinkDef.h)
 
-ROOT_LINKER_LIBRARY(Ruby *.cxx G__Ruby.cxx LIBRARIES ${RUBY_LIBRARIES} DEPENDENCIES Reflex Tree)
+ROOT_LINKER_LIBRARY(Ruby *.cxx G__Ruby.cxx LIBRARIES ${RUBY_LIBRARY} ${CMAKE_DL_LIBS} DEPENDENCIES Hist MathCore)
 if(MACOSX_MINOR EQUAL 5)
   ROOT_EXECUTABLE(ruby64 ruby64.c LIBRARIES  ${RUBY_LIBRARY})
 endif()