8ff2d6af69
This defines a new policy for removal of transitive includes. The goal of the policy it to make it relatively easy to remove headers when needed, but avoid breaking developers using and vendors shipping libc++. The method used is to guard transitive includes based on the C++ language version. For the upcoming C++23 we can remove headers when we want, but for other language versions we try to keep it to a minimum. In this code the transitive include of `<chrono>` is removed since D128577 introduces a header cycle between `<format>` and `<chrono>`. This cycle is indirectly required by the Standard. Our cycle dependency tool basically is a grep based tool, so it needs some hints to ignore cycles. With the input of our transitive include tests we can create a better tool. However that's out of the scope of this patch. Note the flag `_LIBCPP_REMOVE_TRANSITIVE_INCLUDES` remains unchanged. So users can still opt-out of transitives includes entirely. Reviewed By: #libc, ldionne, philnik Differential Revision: https://reviews.llvm.org/D132284 |
||
|---|---|---|
| .. | ||
| ABIVersioning.rst | ||
| AtomicDesign.rst | ||
| CapturingConfigInfo.rst | ||
| DebugMode.rst | ||
| ExperimentalFeatures.rst | ||
| ExtendedCXX03Support.rst | ||
| FeatureTestMacros.rst | ||
| FileTimeType.rst | ||
| HeaderRemovalPolicy.rst | ||
| NoexceptPolicy.rst | ||
| ThreadingSupportAPI.rst | ||
| UniquePtrTrivialAbi.rst | ||
| UnspecifiedBehaviorRandomization.rst | ||
| VisibilityMacros.rst | ||