Won't build in gcc 11.4.0 under Ubuntu 22.04

[xihr]

[  1%] Building CXX object CMakeFiles/omega.dir/src/abyss.cpp.o
/home/max/other/Omega/src/abyss.cpp:25:10: fatal error: format: No such file or directory
   25 | #include <format>
      |          ^~~~~~~~
compilation terminated.

Just so you know.

[Lyle-Tafoya]

I currently use GCC 13 to compile on Linux. I suppose you have 3 possible options:

1. Find a way to install GCC 13. I would be willing to bet there is a way to get GCC 13 on Ubuntu 22.04 without having to compile it yourself.
2. Use GCC 11 with the "fmt" library (libfmt-dev in Ubuntu 22.04 repo) and replace #include <format> with #include <fmt/core.h> and std::format with fmt::format. You would probably need to use sed or some other utility to perform the find/replace operations. It may also be necessary to link against fmt with the linker flag -lfmt, but I'm not 100% sure about that.
3. Use Clang 14 with the -fexperimental-library compile flag (or Clang 17 without that flag). I see that Ubuntu 22.04 has Clang 14 in the official repo, so this might be the easiest option, although I have not tested this.

[Lyle-Tafoya]

Actually, I just tried with Clang 14 and the -fexperimental-library compile flag on Ubuntu 22.04, and it seems that flag isn't supported. I'm not sure why. I was basing my information off of https://en.cppreference.com/w/cpp/compiler_support

[Lyle-Tafoya]

On Ubuntu 22.04, the following steps can be performed:

sudo add-apt-repository ppa:ubuntu-toolchain-r/test
sudo apt update
sudo apt install g++-13
git clone https://github.com/Lyle-Tafoya/Omega.git
mkdir Omega/build
cd Omega/build
CXX=g++-13 cmake ..
make

I will update the README with this information shortly

[SilearFlare]

Can confirm you can actually get it to compile properly if you bother with actually hunting for and installing that specific test GCC 13 repository on ubuntu and ubuntu-adjacent distributions. Thanks for the README addition, it was a bit of an annoying rabbit hole to find it in the first place.

[Lyle-Tafoya]

Closing this, since the necessary steps to compile on Ubuntu 22.04 are now in the README

[xihr]

Sorry, was out of town for the weekend. Yep, works after installing g++-13. Good to go.