[TF XLA AOT] Add cmake support for the standalone XLA AOT runtime

Example [generated Makefile](https://gist.github.com/mtrofin/fea40c80748d958b22a7ca655b52a730)

PiperOrigin-RevId: 299226330
Change-Id: Ia9969afefe3ac6d84b4eccbb93fdbd6f6341c955

tensorflow/opensource_only.files

@@ -399,5 +399,6 @@ tensorflow/tools/pip_package/pip_smoke_test.py
 tensorflow/tools/pip_package/setup.py
 tensorflow/tools/pip_package/simple_console.py
 tensorflow/tools/pip_package/simple_console_for_windows.py
+tensorflow/tools/pip_package/xla_build/CMakeLists.txt
 tensorflow/virtual_root_template_v1.__init__.py
 tensorflow/virtual_root_template_v2.__init__.py

tensorflow/tools/pip_package/BUILD

@@ -71,6 +71,11 @@ filegroup_as_file(
     dep = "//tensorflow/compiler/tf2xla:xla_compiled_cpu_runtime_srcs",
 )
 
+filegroup(
+    name = "xla_cmake",
+    srcs = ["xla_build/CMakeLists.txt"],
+)
+
 # Add dynamic kernel dso files here.
 DYNAMIC_LOADED_KERNELS = [
     "//tensorflow/core/kernels:libtfkernel_sobol_op.so",
@@ -83,6 +88,7 @@ COMMON_PIP_DEPS = [
     "setup.py",
     ":included_headers",
     ":xla_compiled_cpu_runtime_srcs.txt_file",
+    ":xla_cmake",
     "//tensorflow:tensorflow_py",
     "//tensorflow/compiler/tf2xla:xla_compiled_cpu_runtime_hdrs",
     "//tensorflow/compiler/tf2xla:xla_compiled_cpu_runtime_srcs",

tensorflow/tools/pip_package/build_pip_package.sh

@@ -69,6 +69,7 @@ function copy_xla_aot_runtime_sources() {
       echo "Missing xla source file: ${file}" 1>&2
     fi
   done
+  cp tensorflow/tools/pip_package/xla_build/CMakeLists.txt "${dst_dir}"
   popd
 }
 

tensorflow/tools/pip_package/xla_build/CMakeLists.txt

@@ -0,0 +1,19 @@
+cmake_minimum_required(VERSION 3.4.3)
+
+file(GLOB_RECURSE TF_RUNTIME_SRC "*.cc")
+add_library(tf_xla_runtime_objects OBJECT
+	${TF_RUNTIME_SRC}
+)
+
+target_include_directories(tf_xla_runtime_objects PRIVATE ../include)
+target_compile_options(tf_xla_runtime_objects PRIVATE
+  -ftemplate-backtrace-limit=0
+  -Wno-ignored-attributes
+  -Wno-deprecated-copy
+  -Wno-cast-qual
+  -Wno-sign-compare
+)
+
+add_library(tf_xla_runtime STATIC
+  $<TARGET_OBJECTS:tf_xla_runtime_objects>
+)