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Make X11 and Wayland libraries optional - #56
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levovix0 merged 15 commits intoOct 6, 2026
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Use siwin_loadDynlibIfExists with importc aliases across optional bindings. Reuse the original X11 package types instead of a private copy, preserve nullable callable variables and the existing EGL and GLX call patterns, and restore unrelated formatting changes. Add loader and source compatibility regression coverage.
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October 5, 2026 20:24
This was referenced Oct 6, 2026
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Summary
A Linux/BSD binary built with both backends should start without requiring libraries for the unused backend. Load the X11, GLX, XRender, Xcursor, Xext, Wayland, xkbcommon, EGL, wayland-egl, and Vulkan entry points through optional runtime handles. Advertise available backends and raise an error when an unavailable renderer is requested.
siwin_loadDynlibIfExists, adding support for explicitimportcsymbol names.libdecor_new != nilavailability check.The C ABI corrections, their caller changes, and the 32-bit binding comments are isolated in the stacked follow-up PR. This PR keeps the existing binding signatures so the optional-loading change can be reviewed separately.
Validation
Rechecked the dynamic-loading-only branch with Nim 2.2.10 on FreeBSD:
tests/t_dynlib_loading.nimpassed with the default memory manager and--mm:refc: missing libraries/symbols, original and aliased symbol lookup, varargs, and existing public API call patterns.dlopenshim hiding the optional platform libraries passed startup, nil-pointer, availability, error, and cleanup checks.tests/t_opengl.nimandtests/t_event_loop.nimpassed on isolated Xvfb servers.nim check --os:linux --path:src src/siwin.nimpassed for amd64 and i386;git diff --check upstream/masterpassed.The i386 checks are compile-time checks only. Live Wayland rendering was not exercised because no compositor was available. ABI limitations of the original declarations remain for the follow-up to address.