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C++23 support #127

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7b557c5
Build with C++23 by default.
heinezen Aug 18, 2025
f3c0e89
Update documentation for C++23.
heinezen Aug 18, 2025
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8 changes: 4 additions & 4 deletions CMakeLists.txt
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Original file line number Diff line number Diff line change
@@ -1,9 +1,9 @@
# Copyright 2017-2021 the nyan authors. See copying.md for legal info.
# Copyright 2017-2025 the nyan authors. See copying.md for legal info.

# main nyan build configuration file

cmake_minimum_required(VERSION 3.8.0)
# required for CMAKE_CXX_STANDARD 17
cmake_minimum_required(VERSION 3.20.0)
# required for CMAKE_CXX_STANDARD 23

message("

Expand Down Expand Up @@ -38,7 +38,7 @@ project(nyan VERSION ${nyan_VERSION} LANGUAGES CXX)
set(nyan_exports_name "nyanTargets")

# C++ standard requirement
set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD 23)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

# CMake policies
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18 changes: 9 additions & 9 deletions README.md
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Expand Up @@ -19,12 +19,12 @@ The main focus is *readability* and *moddability*.

The foundation of **nyan**:

Technology | Component
-----------------------|----------
**C++20** | nyan core
**Flex** | Tokenizer generator
**CMake** | Build "system"
**Humans** | Doing it wrong all the time
| Technology | Component |
| ---------- | --------------------------- |
| **C++23** | nyan core |
| **Flex** | Tokenizer generator |
| **CMake** | Build "system" |
| **Humans** | Doing it wrong all the time |


How?
Expand Down Expand Up @@ -133,9 +133,9 @@ Please submit bugs and feature requests (and patches) on [GitHub](https://github
Dependencies, Building and Running
----------------------------------

Operating System | Build status
--------------------|--------------
Debian Sid | [Todo: Kevin #11](https://github.com/SFTtech/kevin/issues/11)
| Operating System | Build status |
| ---------------- | ------------------------------------------------------------- |
| Debian Sid | [Todo: Kevin #11](https://github.com/SFTtech/kevin/issues/11) |


- How do I get this to install on my box?
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8 changes: 4 additions & 4 deletions doc/building.md
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@@ -1,12 +1,12 @@
# Building nyan

This project requires a C++20 compiler (e.g gcc >= 10 or clang >= 10) and
This project requires a C++23 compiler (e.g gcc >= 11 or clang >= 13) and
uses `flex` and `cmake`.


## Dependencies

###### Ubuntu 20.04 or later
###### Ubuntu 22.04 or later

```
sudo apt-get update
Expand Down Expand Up @@ -36,7 +36,7 @@ sudo emerge -avt cmake flex make
- [Visual Studio 2017 Community edition](https://www.visualstudio.com/downloads/)
- [flex](https://sourceforge.net/projects/winflexbison/)
- The path to win_flex.exe needs to be added to the PATH environment variable

## Clone this repository

```
Expand All @@ -58,7 +58,7 @@ make -j$(nproc)
_Note:_ on windows the last command is
```powershell
cmake --build . --config RelWithDebInfo
```
```

_Note:_ if nyan can't find flex add `-DFLEX_EXECUTABLE=path/to/win_flex.exe` to the cmake configure command.

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2 changes: 1 addition & 1 deletion nyan/CMakeLists.txt
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Expand Up @@ -115,7 +115,7 @@ set_target_properties(nyan PROPERTIES
# C++ standard requirement
target_compile_features(nyan
PUBLIC
cxx_std_17
cxx_std_23
)

# binaries
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