fix: builtin_kernel linker error (move to runtime lib) + disable ARM64 unity build in CI

Author: Mike-Leo-Smith

.github/workflows/build-cmake.yml

@@ -19,7 +19,7 @@ jobs:
             arch: aarch64
             cuda-keyring: sbsa
             jobs: 4
-            unity: ON
+            unity: OFF
 
     name: ${{ matrix.config }} / ${{ matrix.platform.os }} / ${{ matrix.platform.arch }} / ${{ matrix.compiler }}
     runs-on: ${{ matrix.platform.os }}

src/runtime/CMakeLists.txt

@@ -23,6 +23,7 @@ set(LUISA_COMPUTE_RUNTIME_REMOTE_SOURCES
 set(LUISA_COMPUTE_RUNTIME_SOURCES
         bindless_array.cpp
         buffer.cpp
+        builtin_kernel.cpp
         byte_buffer.cpp
         command_list.cpp
         context.cpp

src/tests/CMakeLists.txt

@@ -63,7 +63,6 @@ endif ()
 # --- unit/ast: standalone tests (need backend, NOT auto-run via CTest) ---
 luisa_compute_add_test(test_ast             unit/ast/test_ast.cpp)
 luisa_compute_add_test(test_builtin_kernel  unit/ast/test_builtin_kernel.cpp)
-target_sources(test_builtin_kernel PRIVATE ${CMAKE_SOURCE_DIR}/src/runtime/builtin_kernel.cpp)
 target_include_directories(test_builtin_kernel PRIVATE ${CMAKE_SOURCE_DIR}/src/runtime)
 luisa_compute_add_test(test_manual_ast      unit/ast/test_manual_ast.cpp)