Ammending 220393 - Removing unused functions.

[oota-llvm.git] / cmake / modules / AddLLVM.cmake

diff --git a/cmake/modules/AddLLVM.cmake b/cmake/modules/AddLLVM.cmake
index 284912c19c15c08d677c32129d252644128ccf32..81b21fbfb6f42d7142dfa45015c30d8ca9ae0d68 100644 (file)
--- a/cmake/modules/AddLLVM.cmake
+++ b/cmake/modules/AddLLVM.cmake
@@ -143,10 +143,14 @@ endfunction(add_llvm_symbol_exports)
 function(add_dead_strip target_name)
   if(NOT LLVM_NO_DEAD_STRIP)
     if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
+      # ld64's implementation of -dead_strip breaks tools that use plugins.
       set_property(TARGET ${target_name} APPEND_STRING PROPERTY
                    LINK_FLAGS " -Wl,-dead_strip")
     elseif(NOT WIN32)
       # Object files are compiled with -ffunction-data-sections.
+      # Versions of bfd ld < 2.23.1 have a bug in --gc-sections that breaks
+      # tools that use plugins. Always pass --gc-sections once we require
+      # a newer linker.
       set_property(TARGET ${target_name} APPEND_STRING PROPERTY
                    LINK_FLAGS " -Wl,--gc-sections")
     endif()
@@ -653,6 +657,7 @@ function(configure_lit_site_cfg input output)
 
   set(HOST_CC "${CMAKE_C_COMPILER} ${CMAKE_C_COMPILER_ARG1}")
   set(HOST_CXX "${CMAKE_CXX_COMPILER} ${CMAKE_CXX_COMPILER_ARG1}")
+  set(HOST_LDFLAGS "${CMAKE_EXE_LINKER_FLAGS}")
 
   configure_file(${input} ${output} @ONLY)
 endfunction()