rt-thread-official/components/libc/cplusplus/cpp11/README.md

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# C++ 11 support for RT-Thread
## Features
Here are some features about rt-thread c++11 threading futures.
- Atomic.
- Conditional variables.
- Clocks.
- Future.
- Mutexes.
- Threads.
- TLS.
## How To Use
Note that using C++ 11 in rt-thread requires modifying some of the files in the toolchain. Before modifying the tool, back up the tool chain.
1. Enable c++11 support
![](figures/Snipaste_2021-09-02_16-00-09.png)
2. Download toolchain GCC 10.2.1:
```shell
gcc version 10.2.1 20201103 (release) (GNU Arm Embedded Toolchain 10-2020-q4-major)
```
3. Delete the following files:
```shell
rm -f toolchain/arm-none-eabi/include/c++/10.2.1/thread
rm -f toolchain/arm-none-eabi/include/c++/10.2.1/mutex
rm -f toolchain/arm-none-eabi/include/c++/10.2.1/condition_variable
rm -f toolchain/arm-none-eabi/include/c++/10.2.1/future
rm -f toolchain/arm-none-eabi/include/pthread.h
```
4. Clear the contents of the following files and keep them to prevent compilation failures:
```shell
toolchain/arm-none-eabi/include/sys/_pthreadtypes.h
```
5. Update `rtconfig.py` file. add compilation parameters:
```shell
CXXFLAGS = CFLAGS + ' -std=c++11 -fabi-version=0 -MMD -MP -MF'
```