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/* This is meant to override Musl's src/include/features.h
*
* We use a separate file here to redefine some attributes that don't work on
* all platforms that we would like to build on.
*/
#ifndef FEATURES_H
#define FEATURES_H
/* Get the required `#include "../../include/features.h"` since we can't use
* the relative path. The C macros need double indirection to get a usable
* string. */
#define _stringify_inner(s) #s
#define _stringify(s) _stringify_inner(s)
#include _stringify(ROOT_INCLUDE_FEATURES)
#if defined(__APPLE__)
#define weak __attribute__((__weak__))
#define hidden __attribute__((__visibility__("hidden")))
/* We _should_ be able to define this as:
* _Pragma(_stringify(weak musl_ ## new = musl_ ## old))
* However, weak symbols aren't handled correctly [1]. So we manually write
* wrappers, which are in `alias.c`.
*
* [1]: https://github.com/llvm/llvm-project/issues/111321
*/
#define weak_alias(old, new) /* nothing */
#else
#define weak __attribute__((__weak__))
#define hidden __attribute__((__visibility__("hidden")))
#define weak_alias(old, new) \
extern __typeof(old) musl_ ## new \
__attribute__((__weak__, __alias__(_stringify(musl_ ## old))))
#endif /* defined(__APPLE__) */
#endif
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