NOCOMMIT: fail CI if ET_USE_THREADPOOL isn't defined where we think it should be

ghstack-source-id: 035e2db
ghstack-comment-id: 2699165966
Pull Request resolved: #8948

Author: swolchok

examples/models/llama/main.cpp

@@ -13,6 +13,8 @@
 #if defined(ET_USE_THREADPOOL)
 #include <executorch/extension/threadpool/cpuinfo_utils.h>
 #include <executorch/extension/threadpool/threadpool.h>
+#else
+#error "threadpool is required"
 #endif
 
 DEFINE_string(

examples/models/llava/main.cpp

@@ -17,6 +17,8 @@
 #if defined(ET_USE_THREADPOOL)
 #include <executorch/extension/threadpool/cpuinfo_utils.h>
 #include <executorch/extension/threadpool/threadpool.h>
+#else
+#error "threadpool is required"
 #endif
 
 DEFINE_string(

extension/android/jni/jni_layer_llama.cpp

@@ -24,6 +24,8 @@
 #if defined(ET_USE_THREADPOOL)
 #include <executorch/extension/threadpool/cpuinfo_utils.h>
 #include <executorch/extension/threadpool/threadpool.h>
+#else
+#error "threadpool is required"
 #endif
 
 #include <fbjni/ByteBuffer.h>

extension/llm/custom_ops/op_sdpa.cpp

@@ -21,6 +21,8 @@
 #ifdef ET_USE_THREADPOOL
 #include <executorch/extension/parallel/thread_parallel.h>
 #include <executorch/extension/threadpool/threadpool.h>
+#else
+#error "threadpool is required"
 #endif
 #include <executorch/extension/kernel_util/make_boxed_from_unboxed_functor.h>