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Daksh Mamodiya 503bdb9777 Makefile: Generate test_prep targets for CMAKE_TEST_BUILD_DEPENDS
Extend the test_prep/<test> and test_prep/all build targets, generated
from add_test(BUILD_DEPENDS) when CMAKE_TEST_BUILD_DEPENDS is enabled, to
the Makefile generators.  Previously only the Ninja and FASTBuild
generators provided them.

Resolve each test's dependencies in a shared layer so all command-line
generators consume one result.  cmTestGenerator now filters target
dependencies to build-system targets and records, for each file
dependency, the single target that produces it as a primary
custom-command output (cmGlobalGenerator::FindOutputOwningTarget).  The
Makefile generators emit phony rules in CMakeFiles/Makefile2 depending on
<target>.dir/all, with top-level forwarding rules.  Sharing the
resolution also stops Ninja and FASTBuild from emitting a dead test_prep
edge for a non-buildable (e.g. INTERFACE) BUILD_DEPENDS target.

On the Makefile generators a file dependency that no single target
produces, and a test whose name contains ':', cannot be expressed as a
recursive-make rule and are reported with a warning and skipped.

Fixes: #27879
2026-06-24 17:24:54 +02:00
..
2026-04-08 12:14:41 -04:00
2024-07-16 12:28:19 -04:00