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15daksh-2003
e135fd8e44
A parallel `cmake --build` with a Makefiles generator interleaved the output of concurrent recipes. When CMake is the one passing the parallel flag and a build-time probe finds GNU Make 4.0 or newer, append `-Otarget` so each recipe's output stays grouped. A native `-- -j` leaves the job count unset and opts out. Honor `USES_TERMINAL` under grouping by prefixing such recipes with a `$(CMAKE_USES_TERMINAL_PREFIX)` variable, empty by default and set to `+` next to `-Otarget`, so interactive commands stay unbuffered. Fixes: #27510
10 lines
507 B
ReStructuredText
10 lines
507 B
ReStructuredText
cmake-build-output-sync
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* The :option:`cmake --build` command now groups the output of each recipe in
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a parallel build so that concurrent jobs do not interleave, when CMake is
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the one passing the parallel flag to the build tool (via :option:`--parallel
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<cmake--build --parallel>` or :envvar:`CMAKE_BUILD_PARALLEL_LEVEL`) and that
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tool is GNU Make 4.0 or newer. Request parallelism natively, e.g.
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``cmake --build . -- -j``, to opt out and stream output as it is produced.
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