Ignore clang build warning given empty tracer params (#438)

Signed-off-by: Neil R. Spruit <neil.r.spruit@intel.com>

Author: nrspruit

.github/workflows/build-clang.yml

@@ -0,0 +1,43 @@
+on:
+  push:
+    branches: [ master,release_branch* ]
+  pull_request:
+    branches: [ master,release_branch* ]
+  workflow_dispatch:
+
+permissions: read-all
+
+jobs:
+  build-clang-linux:
+    if: github.repository_owner == 'oneapi-src'
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        container:
+          - ubuntu:22.04
+          - ubuntu:24.04
+        build_type:
+          - static
+          - dynamic
+    container:
+      image: ${{ matrix.container }}
+    steps:
+      - name: Install dependencies
+        run: |
+          apt-get update
+          apt-get install -y clang cmake make git
+      - uses: actions/checkout@v4
+      - name: Build Loader (${{ matrix.build_type }}) with Clang on ${{ matrix.container }}
+        run: |
+          mkdir build
+          cd build
+          cmake \
+            -D CMAKE_C_COMPILER=clang \
+            -D CMAKE_CXX_COMPILER=clang++ \
+            -D CMAKE_BUILD_TYPE=Release \
+            -D BUILD_L0_LOADER_TESTS=1 \
+            -D INSTALL_NULL_DRIVER=1 \
+            -D BUILD_STATIC=${{ matrix.build_type == 'static' && '1' || '0' }} \
+            ..
+          cmake --build . --config Release

include/layers/zel_tracing_register_cb.h

@@ -2726,9 +2726,16 @@ typedef void (ZE_APICALL *zer_pfnTranslateIdentifierToDeviceHandleCb_t)(
 /// @details Each entry is a pointer to the parameter passed to the function;
 ///     allowing the callback the ability to modify the parameter's value
 
+#ifdef __clang__
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wextern-c-compat"
+#endif
 typedef struct _zer_get_default_context_params_t
 {
 } zer_get_default_context_params_t;
+#ifdef __clang__
+#pragma clang diagnostic pop
+#endif
 
 
 ///////////////////////////////////////////////////////////////////////////////

scripts/templates/tracing/trc_setters.h.mako

@@ -44,17 +44,30 @@ typedef struct _zel_tracer_handle_t *zel_tracer_handle_t;
 %for obj in tbl['functions']:
 <%
     ret_type = obj['return_type']
+    params_list = th.make_param_lines(n, tags, obj, format=["type*", "name"])
+    is_void_params = len(params_list) == 0
 %>///////////////////////////////////////////////////////////////////////////////
 /// @brief Callback function parameters for ${th.make_func_name(n, tags, obj)}
 /// @details Each entry is a pointer to the parameter passed to the function;
 ///     allowing the callback the ability to modify the parameter's value
 
+%if is_void_params:
+#ifdef __clang__
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wextern-c-compat"
+#endif
+%endif
 typedef struct _${th.make_pfncb_param_type(n, tags, obj)}
 {
-    %for line in th.make_param_lines(n, tags, obj, format=["type*", "name"]):
+    %for line in params_list:
     ${line};
     %endfor
 } ${th.make_pfncb_param_type(n, tags, obj)};
+%if is_void_params:
+#ifdef __clang__
+#pragma clang diagnostic pop
+#endif
+%endif
 
 
 ///////////////////////////////////////////////////////////////////////////////