pybind11: fix and generalize example

.gitignore

@@ -25,8 +25,11 @@ __pycache__
 # Accidents.
 /core
 /m5out
+
+# In-tree userland builds.
 *.o
 *.out
+*.so
 
 # Kernel modules.
 *.ko

userland/libs/pybind11/class.cpp

@@ -1,24 +0,0 @@
-#include <string>
-
-#include <pybind11/pybind11.h>
-
-struct Pet {
-    Pet(const std::string &name) : name(name) { }
-    void setName(const std::string &name_) { name = name_; }
-    const std::string &getName() const { return name; }
-
-    std::string name;
-};
-
-namespace py = pybind11;
-
-PYBIND11_PLUGIN(example) {
-    py::module m("example", "pybind11 example plugin");
-
-    py::class_<Pet>(m, "Pet")
-        .def(py::init<const std::string &>())
-        .def("setName", &Pet::setName)
-        .def("getName", &Pet::getName);
-
-    return m.ptr();
-}

userland/libs/pybind11/class_test.cpp

@@ -0,0 +1,22 @@
+#include <string>
+
+#include <pybind11/pybind11.h>
+
+struct ClassTest {
+    ClassTest(const std::string &name) : name(name) { }
+    void setName(const std::string &name_) { name = name_; }
+    const std::string &getName() const { return name; }
+    std::string name;
+};
+
+namespace py = pybind11;
+
+PYBIND11_PLUGIN(class_test) {
+    py::module m("my_module", "pybind11 example plugin");
+    py::class_<ClassTest>(m, "ClassTest")
+        .def(py::init<const std::string &>())
+        .def("setName", &ClassTest::setName)
+        .def("getName", &ClassTest::getName)
+        .def_readwrite("name", &ClassTest::name);
+    return m.ptr();
+}

userland/libs/pybind11/class_test_main.py

@@ -6,3 +6,4 @@ my_class_test = class_test.ClassTest("abc");
 print(my_class_test.getName())
 my_class_test.setName("012")
 print(my_class_test.getName())
+assert(my_class_test.getName() == my_class_test.name)

userland/libs/pybind11/test.sh

@@ -1,4 +1,4 @@
 #!/usr/bin/env bash
-set -eu
-g++ -O3 -Wall -shared -std=c++11 -fPIC  class_test.cpp -o class_test`python3-config --extension-suffix` -I /usr/include/python3.6m
+set -eux
+g++ `python3-config --cflags` -shared -std=c++11 -fPIC class_test.cpp -o class_test`python3-config --extension-suffix` `python3-config --libs`
 ./class_test_main.py