--- llvm-5.0.0.src/tools/llvm-shlib/CMakeLists.txt.orig	2017-11-28 10:25:33.606319245 +0100
+++ llvm-5.0.0.src/tools/llvm-shlib/CMakeLists.txt	2017-11-28 10:24:41.439227412 +0100
@@ -36,7 +36,9 @@
 
 add_llvm_library(LLVM SHARED DISABLE_LLVM_LINK_LLVM_DYLIB SONAME ${SOURCES})
 
+if(LIB_NAMES)
 list(REMOVE_DUPLICATES LIB_NAMES)
+endif()
 if(("${CMAKE_SYSTEM_NAME}" STREQUAL "Linux") OR (MINGW) OR (HAIKU) OR ("${CMAKE_SYSTEM_NAME}" STREQUAL "FreeBSD") OR ("${CMAKE_SYSTEM_NAME}" STREQUAL "DragonFly")) # FIXME: It should be "GNU ld for elf"
   configure_file(
   ${CMAKE_CURRENT_SOURCE_DIR}/simple_version_script.map.in