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Adds support for C++20 modules#535

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anarthal wants to merge 17 commits intoboostorg:developfrom
anarthal:feature/cxx20-modules
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Adds support for C++20 modules#535
anarthal wants to merge 17 commits intoboostorg:developfrom
anarthal:feature/cxx20-modules

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@anarthal anarthal commented Mar 7, 2026

Adds "compatibility headers" <boost/config/std/xyz.hpp> to easily ifdef-out std dependencies in other libraries
Adds boost/config/disable_module_warnings.hpp, to disable warnings about angle-bracket includes in purviews
Changes some includes under some compilers to be more lightweight

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anarthal commented Mar 7, 2026

See boostorg/cmake#105 for the full discussion, https://github.com/anarthal/boost-cmake/blob/feature/cxx20-modules/modules.md for the rationale I've been following.

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