build_variables.bzl: split PLATFORM_SRCS from EXECUTORCH_CORE_SRCS

Making the structure in this file mirror buck's worldview more closely when it makes sense. #8268

ghstack-source-id: 89544c6
ghstack-comment-id: 2652360999
Pull Request resolved: #8398

Author: swolchok

build/build_variables.bzl

@@ -39,6 +39,13 @@ PROGRAM_NO_PRIM_OPS_SRCS = [
     "tensor_parser_exec_aten.cpp",
 ]
 
+PLATFORM_SRCS = [
+    "abort.cpp",
+    "log.cpp",
+    "profiler.cpp",
+    "runtime.cpp",
+]
+
 EXECUTORCH_CORE_SRCS = sorted([
     "runtime/backend/interface.cpp",
     "runtime/core/evalue.cpp",
@@ -49,13 +56,9 @@ EXECUTORCH_CORE_SRCS = sorted([
     "runtime/core/tensor_layout.cpp",
     "runtime/executor/tensor_parser_portable.cpp",
     "runtime/kernel/operator_registry.cpp",
-    "runtime/platform/abort.cpp",
     "runtime/platform/default/posix.cpp",
-    "runtime/platform/log.cpp",
-    "runtime/platform/profiler.cpp",
-    "runtime/platform/runtime.cpp",
     "schema/extended_header.cpp",
-] + ["runtime/executor/" + x for x in PROGRAM_NO_PRIM_OPS_SRCS])
+] + ["runtime/executor/" + x for x in PROGRAM_NO_PRIM_OPS_SRCS] + ["runtime/platform/" + x for x in PLATFORM_SRCS])
 
 PORTABLE_KERNELS_SRCS = [
     "kernels/portable/cpu/op__empty_dim_order.cpp",

runtime/platform/targets.bzl

@@ -1,3 +1,4 @@
+load("@fbsource//xplat/executorch/build:build_variables.bzl", "PLATFORM_SRCS")
 load("@fbsource//xplat/executorch/build:runtime_wrapper.bzl", "runtime")
 load(":log.bzl", "get_et_logging_flags")
 
@@ -69,12 +70,7 @@ def define_common_targets():
             "profiler.h",
             "runtime.h",
         ],
-        srcs = [
-            "abort.cpp",
-            "log.cpp",
-            "profiler.cpp",
-            "runtime.cpp",
-        ],
+        srcs = PLATFORM_SRCS,
         exported_preprocessor_flags = get_profiling_flags() + get_et_logging_flags(),
         exported_deps = [
             "//executorch/runtime/platform:pal_interface",