diff options
Diffstat (limited to 'llvm/cmake')
| -rw-r--r-- | llvm/cmake/modules/AddLLVM.cmake | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/llvm/cmake/modules/AddLLVM.cmake b/llvm/cmake/modules/AddLLVM.cmake index 374f5e0..eb9e610 100644 --- a/llvm/cmake/modules/AddLLVM.cmake +++ b/llvm/cmake/modules/AddLLVM.cmake @@ -257,6 +257,16 @@ if (NOT DEFINED LLVM_LINKER_DETECTED AND NOT WIN32) message(STATUS "Linker detection: unknown") endif() endif() + + # Apple's linker complains about duplicate libraries, which CMake likes to do + # to support ELF platforms. To silence that warning, we can use + # -no_warn_duplicate_libraries, but only in versions of the linker that + # support that flag. + if(NOT LLVM_USE_LINKER AND ${CMAKE_SYSTEM_NAME} MATCHES "Darwin") + check_linker_flag(C "-Wl,-no_warn_duplicate_libraries" LLVM_LINKER_SUPPORTS_NO_WARN_DUPLICATE_LIBRARIES) + else() + set(LLVM_LINKER_SUPPORTS_NO_WARN_DUPLICATE_LIBRARIES OFF CACHE INTERNAL "") + endif() endif() function(add_link_opts target_name) @@ -310,6 +320,11 @@ function(add_link_opts target_name) endif() endif() + if(LLVM_LINKER_SUPPORTS_NO_WARN_DUPLICATE_LIBRARIES) + set_property(TARGET ${target_name} APPEND_STRING PROPERTY + LINK_FLAGS " -Wl,-no_warn_duplicate_libraries") + endif() + if(ARG_SUPPORT_PLUGINS AND ${CMAKE_SYSTEM_NAME} MATCHES "AIX") set_property(TARGET ${target_name} APPEND_STRING PROPERTY LINK_FLAGS " -Wl,-brtl") |