libclc: Pass system libraries to the linker after llvm libraries

Summary:
The llvm libraries depend on the symbols in the system libaries, so
the system libraries need to be added after.

Reviewers: jvesely

Reviewed By: jvesely

Subscribers: mgorny, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D78535

(cherry picked from commit 174c41d)

Author: tstellar

libclc/CMakeLists.txt

@@ -113,8 +113,8 @@ link_directories( ${LLVM_LIBDIR} )
 add_executable( prepare_builtins utils/prepare-builtins.cpp )
 target_compile_options( prepare_builtins PRIVATE ${LLVM_CXX_FLAGS} )
 target_compile_definitions( prepare_builtins PRIVATE ${LLVM_VERSION_DEFINE} )
-target_link_libraries( prepare_builtins PRIVATE ${LLVM_SYSTEM_LIBS} )
 target_link_libraries( prepare_builtins PRIVATE ${LLVM_LIBS} )
+target_link_libraries( prepare_builtins PRIVATE ${LLVM_SYSTEM_LIBS} )
 
 # Setup arch devices
 set( r600--_devices cedar cypress barts cayman )