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Discover gtest cases at ctest start so parallel links stop sharing one discovery JSON file.

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swung0x48
2026-10-03 09:38:51 -04:00
parent 07e7730085
commit 2a1889b817
1 changed files with 11 additions and 0 deletions
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CMakeLists.txt
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@@ -1007,6 +1007,17 @@ if (NOT ANDROID AND NOT MOBILEGL_IOS)
endif ()
endif ()
# Discover gtest cases when ctest starts, one binary after another, instead of in a post-build
# step. The post-build discovery of the CMake releases that never pass the target name down
# writes every binary's `--gtest_output=json` result to ONE per-directory file
# (cmake_test_discovery_<hash of an empty name>.json), so binaries linked in parallel in the same
# directory overwrite and delete each other's list: the registered count then differs between
# runs of the same tree and a binary ends up with none or only some of its cases. The pre-test
# mode reads the list from stdout, serially, and also works when the binary is cross-built.
if (NOT DEFINED CMAKE_GTEST_DISCOVER_TESTS_DISCOVERY_MODE)
set(CMAKE_GTEST_DISCOVER_TESTS_DISCOVERY_MODE PRE_TEST)
endif()
if (NOT ANDROID)
# Enable testing in the top-level scope so a CTestTestfile.cmake is emitted
# at the build-tree root. This lets `ctest` be invoked from the top-level