Add (and fix) OSS check that et_operator_library dtype_selective_build builds

.ci/scripts/unittest-buck2.sh

@@ -24,6 +24,8 @@ BUILDABLE_KERNELS_PRIM_OPS_TARGETS=$(buck2 query //kernels/prim_ops/... | grep -
 # TODO: expand the covered scope of Buck targets.
 # //runtime/kernel/... is failing because //third-party:torchgen_files's shell script can't find python on PATH.
 # //runtime/test/... requires Python torch, which we don't have in our OSS buck setup.
-buck2 test $BUILDABLE_OPTIMIZED_OPS //kernels/portable/... \
+buck2 test \
+      //examples/selective_build:select_all_dtype_selective_lib_portable_lib \
+      $BUILDABLE_OPTIMIZED_OPS //kernels/portable/... \
       $BUILDABLE_KERNELS_PRIM_OPS_TARGETS //runtime/backend/... //runtime/core/... \
       //runtime/executor: //runtime/kernel/... //runtime/platform/...

examples/selective_build/targets.bzl

@@ -25,6 +25,21 @@ def define_common_targets():
         ],
     )
 
+    executorch_generated_lib(
+        name = "select_all_dtype_selective_lib",
+        functions_yaml_target = "//executorch/kernels/portable:functions.yaml",
+        kernel_deps = [
+            "//executorch/kernels/portable:operators",
+        ],
+        # Setting dtype_selective_build without using list or dict selection isn't a
+        # typical use case; we just do it here so that we can test that our mechanism
+        # for getting buck deps right for dtype_selective_build is working.
+        dtype_selective_build = True,
+        deps = [
+            ":select_all_ops",
+        ],
+    )
+
     # Select a list of operators: defined in `ops`
     et_operator_library(
         name = "select_ops_in_list",

kernels/portable/cpu/pattern/targets.bzl

@@ -11,7 +11,7 @@ def define_common_targets():
     # build, where the portable ops are built from source and linked with :all_deps
     runtime.cxx_library(
         name = "all_deps",
-        deps = [
+        exported_deps = [
             "//executorch/kernels/portable/cpu/pattern:pattern",
             "//executorch/kernels/portable/cpu/pattern:bitwise_op",
             "//executorch/kernels/portable/cpu/pattern:comparison_op",
@@ -54,14 +54,16 @@ def define_common_targets():
             "unary_ufunc_realhbbf16_to_floathbf16.cpp",
             "unary_ufunc_realh.cpp",
         ],
+        exported_deps = [
+            "//executorch/runtime/kernel:kernel_includes",
+        ],
         exported_headers = [
             "pattern.h",
         ],
         compiler_flags = ["-Wno-missing-prototypes"],
         deps = [
             "//executorch/kernels/portable/cpu/util:broadcast_util",
             "//executorch/kernels/portable/cpu/util:functional_util",
-            "//executorch/runtime/kernel:kernel_includes",
         ],
         visibility = ["//executorch/kernels/portable/cpu/...", "//executorch/kernels/optimized/cpu/..."],
     )

kernels/portable/cpu/util/targets.bzl

@@ -11,7 +11,7 @@ def define_common_targets():
     # build, where the portable ops are built from source and linked with :all_deps
     runtime.cxx_library(
         name = "all_deps",
-        deps = [
+        exported_deps = [
             "//executorch/kernels/portable/cpu/util:functional_util",
             "//executorch/kernels/portable/cpu/util:broadcast_util",
             "//executorch/kernels/portable/cpu/util:kernel_ops_util",

shim_et/xplat/executorch/codegen/codegen.bzl

@@ -631,7 +631,7 @@ def executorch_generated_lib(
         )
 
     portable_lib = []
-    if dtype_selective_build and is_xplat() and "//executorch/kernels/portable:operators" in kernel_deps:
+    if dtype_selective_build and (is_xplat() or runtime.is_oss) and "//executorch/kernels/portable:operators" in kernel_deps:
         # Remove portable from kernel_deps as we're building it from source.
         kernel_deps.remove("//executorch/kernels/portable:operators")