diff --git a/CMakeLists.txt b/CMakeLists.txt
index cda1ffc795d1..1bf904cb09fe 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -164,6 +164,13 @@ endif()
 #
 get_torch_gpu_compiler_flags(VLLM_GPU_FLAGS ${VLLM_GPU_LANG})
 
+#
+# Add line info for debugging.
+#
+if(VLLM_GPU_LANG STREQUAL "CUDA")
+  list(APPEND VLLM_GPU_FLAGS "-lineinfo")
+endif()
+
 #
 # Set nvcc parallelism.
 #