Add --available-symbols to skip wrappers for unprovided functions#36
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yuiseki wants to merge 1 commit into
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Add --available-symbols to skip wrappers for unprovided functions#36yuiseki wants to merge 1 commit into
yuiseki wants to merge 1 commit into
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What this does
Adds an optional
--available-symbols FILEflag. The file lists thewgpu*C symbols actually provided by the library you link against (one per line, leading underscore optional). Procedures whose underlying C function is not in the list are skipped during generation, so the wrapper only references symbols that exist at link time. It reuses the same skip path as the existing blacklist.Compatibility
Fully backward compatible. The flag is opt-in and defaults to off; an empty or missing file disables filtering. Without it, output is byte-for-byte identical to before.
Why it's needed
The WebGPU header declares the full spec surface, but a backend like wgpu-native implements only a subset (e.g. external textures and the mapped-range helpers are declared but not implemented). The
WEBGPU_CPP_IMPLEMENTATIONTU then emits references to those absent functions, which become unresolvedwgpu*symbols when linking statically (for us, bundling into an amalgamation). Today the only workaround is to maintain a hand-written blacklist that drifts every time the header is updated.--available-symbolsderives the exclusions automatically from the target library (e.g.nm), so it stays correct across backend and header versions.