lbuild module: modm:stdc++

Refines the C++ language to make it easier to use on embedded targets. Depending on the module options, the compiler options are appended with either:

• -fno-exceptions: no C++ exceptions.
• -fno-rtti: no C++ run-time type information.
• -fno-threadsafe-statics: no protection of static variable initialization.

or:

• -fexceptions: with C++ exceptions.
• -frtti: with C++ run-time type information.

The std::atomic interface is implemented for the AVR and Cortex-M devices.

AVR

A partial port of GCC libstdc++ is provided: See https://github.com/modm-io/avr-libstdcpp.

Module Options

modm:stdc++:assert_on_exception: Assert on exception in stdlib. Set to False to save flash.

Generated with: yes in [yes, no]

modm:stdc++:safe_statics: C++ Safe Statics Initialization

Enables safe initialization of statics inside functions and interrupts. In case of recursive initialization the debug assertion stat.rec is raised.

Further reading on this topic:

• C++ ABI for the ARM Architecture
• Adventures in Systems Programming: C++ Local Statics
• C++11 thread-safe static object initialization

Generated with: yes in [yes, no]