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| author | Rafael Espindola <rafael.espindola@gmail.com> | 2014-10-20 21:37:38 +0000 |
|---|---|---|
| committer | Rafael Espindola <rafael.espindola@gmail.com> | 2014-10-20 21:37:38 +0000 |
| commit | b9c7f601917b88f9743a42d97081b1655fe9bf06 (patch) | |
| tree | 17e517bd0fabb3c700a3381fa412db4bf5263a9f /cmake | |
| parent | 4e399f4500051ebc4dce6f9a54a3786967e99eca (diff) | |
Explain why we don't always use --gc-sections.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220237 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'cmake')
| -rw-r--r-- | cmake/modules/AddLLVM.cmake | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/cmake/modules/AddLLVM.cmake b/cmake/modules/AddLLVM.cmake index 284912c19c1..127d5389d19 100644 --- 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() |