mirror of
https://gitlab.kitware.com/cmake/cmake.git
synced 2026-09-29 04:09:35 +03:00
Roman Lavrov
d741a4fb90
Since commit b6367f723b (Swift/Ninja: Emit modules separately from
compilation, 2026-04-10) the compile and emit-module edges share the
same -output-file-map, which references a single module-level
.swiftdeps file. When ninja schedules both edges concurrently, both
swift invocations write that file and corrupt it.
Add the .swiftmodule output as an order-only dependency of the object
compile edge so the two edges within a target run sequentially.
Downstream targets are unaffected: they still unblock as soon as the
emit-module edge finishes, preserving cross-target parallelism.
Move the object-build WriteBuild call to after the emit-module block
so the order-only dep is added after modBuild is copied from objBuild,
avoiding a self-reference on the emit-module edge's own output.
Issue: #27748
15 lines
515 B
CMake
15 lines
515 B
CMake
cmake_policy(SET CMP0157 NEW)
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cmake_policy(SET CMP0215 NEW)
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if(NOT CMAKE_GENERATOR MATCHES "Ninja")
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message(SEND_ERROR "this test must use a Ninja generator, found ${CMAKE_GENERATOR}")
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endif()
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enable_language(Swift)
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# The compile and emit-module edges share the same -output-file-map.
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# Within the target, the object compile edge must order-only depend on the
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# .swiftmodule so the two edges do not run concurrently and corrupt the
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# shared module-level swift-dependencies entry.
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add_library(L STATIC L.swift)
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