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Revision as of 18:19, 23 April 2024 by Pulsar17 (talk | contribs) (Add back consteval static)
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See also C++11, C++17, C++23.

Some things that will be interesting to use once C++20 is common:

Feature Since Can use? GCC Apple Clang Comment
std::span C++20 from 1.4 10 11.0.3 Handle buffers like standard library containers without risk of overflow.
std::format C++20 not yet 13 15.3 Better and more efficient formatting of strings. Text Formatting
std::lerp C++20 from 1.4 9 11.0.3 Linear interpolation. (ui/tools/pencil-tool.cpp)
std::bit_floor C++20 from 1.4 9/10 11.0.3/13.0.0 Compute floor(log2(x)). (helper/mathfns.h)
Concepts C++20 from 1.4? 6/10 12.0.0 Partial Safer templating. (ui/controller.h)
Coroutines C++20 not yet 10 10.0.1 Partial,
15.3 Full
Simpler asynchronous code. (trace/trace.cpp)
std::make_unique_for_overwrite C++20 not yet 11 15.0.0 Don't zero arrays allocated using std::make_unique. (util/pool.cpp)
Ranges C++20 not yet ? (ui/dialog/swatches.cpp)
Structural templates C++20 from 1.4? Partial Allow instances of arbitrary literal classes as template parameters. (display/drawing.cpp)
Mathematical Constants C++20 10 12.0.5 Constants like std::numbers::pi.
Heterogenous lookup in std::unordered_map C++20 not yet Faster lookup, use of smart pointers as keys.
consteval static member functions C++20 not yet Guaranteed compile time evaluation of member functions (stronger than constexpr)


As of 27 March 2024, the CI runners for the various supported platforms are

  • Linux:
    • appimage:linux: GNU 13.2.0 (building on Ubuntu 23.10)
    • inkscape:linux: Same as above
  • Windows
    • inkscape:windows:build: GNU 13.2.0
    • inkscape:windows:dist: Same as above
  • macOS:
    • inkscape::macos:arm: Apple Clang 15.0.0
    • inkscape:macos:x64: Apple Clang 13.0.0 (temporarily disabled since GTK4 port)

We strive to support latest Debian stable and latest Ubuntu LTS. However, we had to break that promise since the GTK4 port, which requires gtkmm4 >= 4.14:

Distro gcc clang gtkmm4
Debian 12 (Bookworm, stable) 12.2.0 15.0.6 4.8.3
Ubuntu 22.04 (Jammy Jellyfish) 12.3.0 15.0.7 Not packaged!
Ubuntu 23.04 (Lunar) 13.1.0 16.0.0 4.10.1
Ubuntu 24.04 (Noble) 13.2.0 18.1.0 4.10.1 (???)

Ubuntu users therefore have the following options:

  • Wait for Ubuntu 24.04, expected around 25 April 2024.
  • Upgrade to Ubuntu 24.04 now.
  • Upgrade to Ubuntu 23.10 and build gtkmm4 from source, as is currently done by CI.
  • ???

Deprecated items that we still use: