| Issue |
163965
|
| Summary |
feature: Optional version of Clang module map `requires` declaration
|
| Labels |
clang
|
| Assignees |
|
| Reporter |
torarnv
|
As described in https://discourse.llvm.org/t/module-map-requires-as-non-hard-requirement/88589 we're looking for a way to provide Clang module maps for Qt for use with Swift, in a way that guarantees these module maps are _not_ accidentally picked up when building C++/Objective-C code (to avoid #158249 and other possible issues).
I initially thought `requires` would solve this, where Clang would ignore the module if the compilation unit doesn't match the required environment, but I now understand it's a hard error.
It would be nice if there was a syntax to declare a module map as having non-fatal requirements, that effectively hides the module (or submodule) if those are not met.
Thanks! 🙂
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