Commit db7470b0 authored by Guillem Jover's avatar Guillem Jover

Gracefully handle lack of system <sys/cdefs.h>

This is the case on musl.

Fixes: https://bugs.debian.org/810589
parent 368af99f
......@@ -24,15 +24,40 @@
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __has_include
#define __has_include 1
#endif
#ifndef __has_include_next
#define __has_include_next 1
#endif
#ifdef LIBBSD_OVERLAY
/*
* Some libc implementations do not have a <sys/cdefs.h>, in particular
* musl, try to handle this gracefully.
*/
#if __has_include_next(<sys/cdefs.h>)
#include_next <sys/cdefs.h>
#endif
#else
#if __has_include(<sys/cdefs.h>)
#include <sys/cdefs.h>
#endif
#endif
#ifndef LIBBSD_SYS_CDEFS_H
#define LIBBSD_SYS_CDEFS_H
#ifndef __BEGIN_DECLS
#ifdef __cplusplus
#define __BEGIN_DECLS extern "C" {
#define __END_DECLS }
#else
#define __BEGIN_DECLS
#define __END_DECLS
#endif
#endif
/*
* Some kFreeBSD headers expect those macros to be set for sanity checks.
*/
......
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