| Age | Commit message (Collapse) | Author |
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`RUBY_FUNC_EXPORTED` is working on Windows since 906a86e4de71061dca05.
And as .def files are not processed by the preprocessor, it is less
flexible than `RUBY_FUNC_EXPORTED`, (e.g., select symbols by
conditions such as ruby version).
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From Visual C:
```
../../../../../src/ext/-test-/load/resolve_symbol_target/resolve_symbol_target.c(5): warning C4273: 'rst_any_method': inconsistent dll linkage
D:\a\ruby\ruby\src\ext\-test-\load\resolve_symbol_target\resolve_symbol_target.h(4): note: see previous definition of 'rst_any_method'
../../../../../src/ext/-test-/load/stringify_target/stringify_target.c(5): warning C4273: 'stt_any_method': inconsistent dll linkage
D:\a\ruby\ruby\src\ext\-test-\load\stringify_target\stringify_target.h(4): note: see previous definition of 'stt_any_method'
```
From MinGW gcc:
```
../../../../../src/ext/-test-/load/resolve_symbol_target/resolve_symbol_target.c:5:1: warning: 'rst_any_method' redeclared without dllimport attribute: previous dllimport ignored [-Wattributes]
compiling ../../../../../src/ext/-test-/marshal/compat/usrcompat.c
5 | rst_any_method(VALUE klass)
| ^~~~~~~~~~~~~~
../../../../../src/ext/-test-/load/stringify_target/stringify_target.c:5:1: warning: 'stt_any_method' redeclared without dllimport attribute: previous dllimport ignored [-Wattributes]
5 | stt_any_method(VALUE klass)
| ^~~~~~~~~~~~~~
```
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#20005]
This is a C API for extensions to resolve and get function symbols of other extensions.
Extensions can check the expected symbol is correctly loaded and accessible, and
use it if it is available.
Otherwise, extensions can raise their own error to guide users to setup their
environments correctly and what's missing.
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