Simon Tatham 725ea968ac De-duplicate dependencies propagated through interface libraries ...

When processing an indirect dependency of target `A` on target `C` via
an interface library B, `cmComputeTargetDepends::AddTargetDepend` was
not checking for duplicate dependencies, so that if `A` depended on `C`
via multiple interface libraries, the dependency graph built in
cmComputeTargetDepends would have duplicate edges.  In a real project
(LLVM libc) this was causing cmake to consume multiple gigabytes of RAM.

Fixes: #27386

2025-11-26 14:48:45 +00:00

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