When building shared libraries, link to required system libraries.

PR 8375

llvm-svn: 116479

llvm/cmake/modules/AddLLVM.cmake

@@ -9,6 +9,12 @@ macro(add_llvm_library name)
   if( LLVM_COMMON_DEPENDS )
     add_dependencies( ${name} ${LLVM_COMMON_DEPENDS} )
   endif( LLVM_COMMON_DEPENDS )
+
+  if( BUILD_SHARED_LIBS )
+    get_system_libs(sl)
+    target_link_libraries( ${name} ${sl} )
+  endif()
+
   install(TARGETS ${name}
     LIBRARY DESTINATION lib${LLVM_LIBDIR_SUFFIX}
     ARCHIVE DESTINATION lib${LLVM_LIBDIR_SUFFIX})

llvm/lib/System/CMakeLists.txt

@@ -42,7 +42,3 @@ add_llvm_library(LLVMSystem
   Win32/ThreadLocal.inc
   Win32/TimeValue.inc
   )
-
-if( BUILD_SHARED_LIBS AND NOT WIN32 )
-  target_link_libraries(LLVMSystem ${CMAKE_DL_LIBS})
-endif()