3b8f536fec
The `ASTReader` populates `Module::PresumedModuleMapFile` only for top-level modules, not submodules. To avoid generating empty `-fmodule-map-file=` arguments, make discovered modules depend on top-level precompiled modules. The granularity of submodules is not important here. The documentation of `Module::PresumedModuleMapFile` says this field is non-empty only when building from preprocessed source. This means there can still be cases where the dependency scanner generates empty `-fmodule-map-file=` arguments. That's being addressed in separate patch: D108544. Reviewed By: dexonsmith Differential Revision: https://reviews.llvm.org/D108647
8 lines
197 B
JSON
8 lines
197 B
JSON
[
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{
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"directory": "DIR",
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"command": "clang -x c-header DIR/pch.h -fmodules -gmodules -fimplicit-module-maps -fmodules-cache-path=DIR/cache -o DIR/pch.h.gch",
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"file": "DIR/pch.h"
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}
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]
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