feat: Linux platform support improvements

[killerdevildog]

Overview

Track remaining work to improve Linux platform support for ArcGameEngine. PR #25 fixes build issues and gets the project compiling and running on Linux — this issue tracks what still needs attention.

Current Status

• Project compiles on Linux (Ubuntu/Debian, Clang 18.1.3)
• Arc-Editor launches and runs on X11
• Build-time workaround for GLFW X11 struct bug (bug: GLFW X11/Wayland platform struct missing setWindowTitleBar function pointer #33)
• Wayland support
• Linux CI/CD pipeline
• Shader warnings (m_Params used uninitialized)
• Remove GLFW build-time patch once upstream is fixed (bug: GLFW X11/Wayland platform struct missing setWindowTitleBar function pointer #33)
• Test on other distros (Fedora, Arch, etc.)
• Test with GCC in addition to Clang

Build Dependencies (Ubuntu/Debian)

sudo apt install build-essential clang libc++-dev libstdc++-14-dev

Known Issues

1. GLFW X11 platform struct bug — Tracked in bug: GLFW X11/Wayland platform struct missing setWindowTitleBar function pointer #33. Currently worked around with a build-time sed patch in GenerateMake.sh.
2. Wayland not supported — GLFW's wl_init.c has the same missing function pointer issue as X11. The premake build only defines _GLFW_X11.
3. Shader warnings — m_Params used uninitialized warnings appear at startup. Pre-existing issue, not Linux-specific.
4. No Linux CI — No GitHub Actions workflow for Linux builds exists yet.

Related

• PR feat: Add experimental Linux build support #25 — Linux build fixes
• Issue bug: GLFW X11/Wayland platform struct missing setWindowTitleBar function pointer #33 — GLFW X11/Wayland struct bug