Added python so generation rule.

WORKSPACE

@@ -299,3 +299,15 @@ maven_install(
     fetch_sources = True,
     version_conflict_policy = "pinned",
 )
+
+new_local_repository(
+    name = "python_dev",
+    path = "/home/yusuke/miniconda3/envs/py37_ubuntu_vtuber/include/python3.7m",
+    build_file_content = """
+package(default_visibility = ["//visibility:public"])
+cc_library(
+    name = "headers",
+    hdrs = glob(["**/*.h"])
+)
+"""
+)

mediapipe/examples/desktop/BUILD

@@ -76,3 +76,17 @@ cc_library(
         "//mediapipe/calculators/core:packet_cloner_calculator"
     ],
 )
+
+cc_binary(
+    name = "cameravtuber.so",
+    linkshared = 1,
+    srcs = [
+        "cameravtuber.cc"
+    ],
+    deps = [
+        ":demo_run_graph_main_gpu",
+        "@python_dev//:headers"
+    ],
+    copts = ["-Iexternal/python_dev", "-DPIC", "-shared", "-fPIC"],
+    linkopts = ["-lboost_python3"]
+)

mediapipe/examples/desktop/cameravtuber.cc

@@ -0,0 +1,10 @@
+#include <boost/python.hpp>
+
+std::string hello() {
+    return "hello world";
+}
+
+BOOST_PYTHON_MODULE(cameravtuber) {
+    using namespace boost::python;
+    def("hello", &hello);
+}