Feature/builder dispose hook

[iitaku]

• Introduced BuildingBlock::register_disposer
• register_disposer takes the symbol name for the dispose function which is defined in rt.h
• The dispose function will take one argument (const char *id) which is tied with the building block instance. id value is always identical with ion::Node::id().

[Fixstars-momoko]

@iitaku Which c++ version supposed to be used?

The current CMakeLists.txt

#
# CMake common settings
#
set(CMAKE_C_STANDARD 11)
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_EXTENSIONS OFF)
set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON) # This is required to export symbols on windows platform
set(CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/cmake" ${CMAKE_MODULE_PATH})

Tried to build on Windows 10:

C:\Users\momoko\cambria\Sensing-Dev\ion-kit\test\c_api.cc(11,25): error C7555: 指定された初期化子を使用するには少なくとも '/std:c++20' が必要です [C:\Users\momoko\cambria\Sens
ing-Dev\ion-kit\build\test\c_api.vcxproj]
C:\Users\momoko\cambria\Sensing-Dev\ion-kit\test\c_api.cc(26,25): error C7555: 指定された初期化子を使用するには少なくとも '/std:c++20' が必要です [C:\Users\momoko\cambria\Sens
ing-Dev\ion-kit\build\test\c_api.vcxproj]
C:\Users\momoko\cambria\Sensing-Dev\ion-kit\test\c_api.cc(167,25): error C7555: 指定された初期化子を使用するには少なくとも '/std:c++20' が必要です [C:\Users\momoko\cambria\Sen
sing-Dev\ion-kit\build\test\c_api.vcxproj]
C:\Users\momoko\cambria\Sensing-Dev\ion-kit\test\c_api.cc(206,25): error C7555: 指定された初期化子を使用するには少なくとも '/std:c++20' が必要です [C:\Users\momoko\cambria\Sen
sing-Dev\ion-kit\build\test\c_api.vcxproj]