diff --git a/lldb/test/CMakeLists.txt b/lldb/test/CMakeLists.txt
--- a/lldb/test/CMakeLists.txt
+++ b/lldb/test/CMakeLists.txt
@@ -95,6 +95,9 @@
 if(TARGET clang)
   add_lldb_test_dependency(clang)
 
+  # TestFullLtoStepping depends on LTO, and only runs when the compiler is clang.
+  add_lldb_test_dependency(LTO)
+
   if (TARGET libcxx OR ("libcxx" IN_LIST LLVM_ENABLE_RUNTIMES))
     set(LLDB_HAS_LIBCXX ON)
     if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE)