[libc] Fix relocatable link attempting to pull in standard libs

Author: jhuber6

libc/startup/gpu/CMakeLists.txt

@@ -34,7 +34,7 @@ function(add_startup_object name)
       RUNTIME_OUTPUT_DIRECTORY ${LIBC_LIBRARY_DIR}
       RUNTIME_OUTPUT_NAME ${name}.o)
     target_link_options(${fq_target_name}.exe PRIVATE
-                        "-flto" "-Wl,--lto-emit-llvm" "-march= ")
+                        "-nostdlib" "-flto" "-Wl,--lto-emit-llvm" "-march= ")
   endif()
 endfunction()