avoid the visibility mismatch with the scripter guard

Author: aoloe

scripter-class-in-class/CMakeLists.txt

@@ -1,5 +1,6 @@
 cmake_minimum_required(VERSION 3.4)
 project(scripting VERSION 1.0 LANGUAGES CXX)
+set(CMAKE_CXX_VISIBILITY_PRESET hidden)
 
 set(PYBIND11_PYTHON_VERSION 3.4)
 

scripter-class-in-class/README.md

@@ -8,3 +8,11 @@ $ cmake -Dpybind11_DIR=/home/ale/bin/pybind11/share/cmake/pybind11 ..
 $ make
 $ ./scripting
 ~~~
+
+# Notes
+
+Pybind11 tries to set the visibilty for all symbols as hidden. In the `CMakeLists.txt` We need to set
+
+    set(CMAKE_CXX_VISIBILITY_PRESET hidden)
+
+because of the guard in the `script.h` file