[Fuchsia] Use llvm-objcopy as objcopy on non-Darwin hosts

llvm-objcopy already supports all the necessary functionality for ELF.

Differential Revision: https://reviews.llvm.org/D41930

llvm-svn: 322252

clang/cmake/caches/Fuchsia-stage2.cmake

@@ -17,6 +17,7 @@ set(LLVM_ENABLE_LTO ON CACHE BOOL "")
 if(NOT APPLE)
   set(LLVM_ENABLE_LLD ON CACHE BOOL "")
   set(CLANG_DEFAULT_LINKER lld CACHE STRING "")
+  set(CLANG_DEFAULT_OBJCOPY llvm-objcopy CACHE STRING "")
 endif()
 
 if(APPLE)