mirror of https://github.com/CGAL/cgal
8978dde2e5
## Summary of Changes `const` variables declared at global scope have internal linkage, and so if they are declared in a header file, they are replicated in every file that `#include` the header. They also can't be the target of `using` declarations that exports the variable into a C++20 module. This change marks a number of variables with `inline`, which gives these variables external linkage, allows the linker to unify all of these variables between different `.o` files, and also allows for their use in C++20 modules. There is a separate question whether these variables could or should be `constexpr` instead of just `const`. The difference between `constexpr` and `const` has no effect on linkage, and so in the spirit of taking one step at a time, this patch does not address the `constexpr` vs `const` question. This patch fixes #8871. Related to https://github.com/dealii/dealii/issues/18071. ## Release Management * Affected package(s): 5.6.1 * Issue(s) solved (if any): #8871 * License and copyright ownership: Same license as used throughout CGAL. |
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