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docs(generator): stop pointing callers at a flag that no longer exists

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--backend qt is deleted from logos-qt-generator, and this repo was still
signposting it. main.cpp's refusal said "Use it for --backend qt", and the usage
text advertised --lidl … --backend qt and --from-header … --backend qt. Those
now point at nothing — the exact failure the deletion removes, one repo over.

The refusal names the real replacement chain instead: --backend cdylib here,
then logos-qt-host-generator --backend cdylib for Qt-plugin packaging.

docs/project.md's "Provider Generation" section documented three emitters that
no longer exist; rewritten to state the seam and the two-step pipeline.
docs/spec.md's dataflow diagram showed <name>_qt_glue.h / <name>_dispatch.cpp as
outputs; the diagram is corrected and the sections describing that shape are
marked historical rather than deleted, because the onInit wiring they document
still applies to the cdylib glue.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
This commit is contained in:
Dario Gabriel Lipicar
2026-08-18 09:26:43 -03:00
co-authored by Claude Opus 5
parent 620f2e184c
commit d27927aba5
3 changed files with 43 additions and 31 deletions
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cpp-generator/main.cpp
+10 -9
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@@ -633,14 +633,16 @@ int main(int argc, char* argv[])
}
if (backend == "qt") {
err << "Error: Qt glue generation moved to logos-qt-generator "
"(logos-qt-sdk). Use it for --backend qt; this tool "
"keeps the Qt-free outputs (--header-to-lidl emits the "
".lidl sidecar).\n";
err << "Error: --backend qt was removed. A module is a plain "
"shared library: emit the module-impl C ABI with "
"--backend cdylib, then turn that into a Qt plugin with "
"logos-qt-host-generator --backend cdylib (logos-plugin-qt). "
"This tool keeps the Qt-free outputs (--header-to-lidl "
"emits the .lidl sidecar).\n";
return 6;
}
err << "Error: --from-header supports --backend cdylib (Qt glue: logos-qt-generator)\n";
err << "Error: --from-header supports --backend cdylib (Qt plugin packaging: logos-qt-host-generator)\n";
return 1;
}
@@ -650,16 +652,15 @@ int main(int argc, char* argv[])
err << "Usage: " << QFileInfo(app.applicationFilePath()).fileName()
<< " --lidl /path/to/module.lidl [--output-dir /path] [--module-only]\n"
<< " " << QFileInfo(app.applicationFilePath()).fileName()
<< " --lidl /path/to/module.lidl --backend qt --impl-class Class --impl-header header.h [--output-dir /path]\n"
<< " " << QFileInfo(app.applicationFilePath()).fileName()
<< " --lidl /path/to/module.lidl --backend cdylib [--output-dir /path] (glue-only: C exports come from the module's own language backend)\n"
<< " " << QFileInfo(app.applicationFilePath()).fileName()
<< " --from-header src/impl.h --backend qt --impl-class Class --metadata metadata.json [--output-dir /path]\n";
<< " --from-header src/impl.h --backend cdylib --metadata metadata.json [--output-dir /path]\n";
return 1;
}
QString lidlPath = args.at(lidlIdx + 1);
// Provider glue mode: --backend qt --impl-class X --impl-header Y
// Backend dispatch. `qt` is refused above: a module is a plain shared
// library, and Qt-plugin packaging is logos-qt-host-generator's job.
const int backendIdx = args.indexOf("--backend");
if (backendIdx != -1) {
if (backendIdx + 1 >= args.size()) {