[core] [revert] Manually revert cpp example change (ray-project#49701)

Signed-off-by: dentiny <[email protected]>

Author: dentiny

cpp/example/BUILD

@@ -0,0 +1,39 @@
+cc_binary(
+    name = "example",
+    srcs = glob([
+        "*.cc",
+    ]),
+    data = [
+        "example.so",
+    ],
+    linkstatic = True,
+    deps = [
+        ":ray_api",
+    ],
+)
+
+cc_binary(
+    name = "example.so",
+    srcs = glob([
+        "*.cc",
+    ]),
+    linkopts = ["-shared"],
+    linkstatic = True,
+    deps = [
+        ":ray_api",
+    ],
+)
+
+cc_library(
+    name = "ray_api",
+    srcs = [
+        "thirdparty/lib/libray_api.so",
+    ],
+    hdrs = glob([
+        "thirdparty/include/**/*.h",
+        "thirdparty/include/**/*.hpp",
+    ]),
+    linkopts = ["-Wl,-rpath,./"],
+    strip_include_prefix = "thirdparty/include",
+    visibility = ["//visibility:public"],
+)

cpp/example/BUILD.bazel

@@ -1,11 +1,13 @@
 #!/usr/bin/env bash
 
-# Cause the script to exit if a single command fails.
+#Cause the script to exit if a single command fails.
 set -e
 
-bazel --nosystem_rc --nohome_rc build //cpp/example:example
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE:-$0}")" || exit; pwd)"
+
+bazel --nosystem_rc --nohome_rc build //:example
 if [[ "$OSTYPE" == "darwin"* ]]; then
-    bazel-bin/cpp/example/example
+    DYLD_LIBRARY_PATH="$ROOT_DIR/thirdparty/lib" "${ROOT_DIR}"/bazel-bin/example
 else
-    bazel-bin/cpp/example/example
+    LD_LIBRARY_PATH="$ROOT_DIR/thirdparty/lib" "${ROOT_DIR}"/bazel-bin/example
 fi