build(mge): clang compile and link error

GitOrigin-RevId: 7062b451aa33fa84936a4181c6a3ad7abd3f585a

dnn/src/cuda/deformable_conv/opr_impl.cpp

@@ -141,7 +141,6 @@ AlgoBwdFlt* BwdFlt::get_algorithm_heuristic(
 size_t BwdFlt::get_workspace_in_bytes(
         const TensorLayout& im, const TensorLayout& offset, const TensorLayout& mask,
         const TensorLayout& out_grad, const TensorLayout& filter_grad) {
-    AlgoBase::SizeArgs args();
     auto algo = get_algorithm(this, im, offset, mask, out_grad, filter_grad);
     return algo->get_workspace_in_bytes({this, im, offset, mask, out_grad, filter_grad});
 }
@@ -207,7 +206,6 @@ size_t BwdData::get_workspace_in_bytes(
         const TensorLayout& offset, const TensorLayout& mask,
         const TensorLayout& out_grad, const TensorLayout& im_grad,
         const TensorLayout& offset_grad, const TensorLayout& mask_grad) {
-    AlgoBase::SizeArgs args();
     auto algo = get_algorithm(this, im, filter, offset, mask, out_grad, 
                               im_grad, offset_grad, mask_grad);
     return algo->get_workspace_in_bytes({this, im, filter, offset, mask, out_grad, 

src/CMakeLists.txt

@@ -130,11 +130,7 @@ if (MGB_WITH_FLATBUFFERS)
     target_include_directories(megbrain PRIVATE ${GENERATED_FLATBUFFERS_CONVERTER_PATH})
 endif()
 if(UNIX)
-    target_link_libraries(megbrain dl rt)
-    find_library(libatomic atomic)
-    if(NOT libatomic STREQUAL "libatomic-NOTFOUND")
-        target_link_libraries(megbrain ${libatomic})
-    endif()
+    target_link_libraries(megbrain dl rt atomic)
 endif()
 
 add_library(megengine SHARED $<TARGET_PROPERTY:megbrain,SOURCES>)