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

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This is the case on musl.

Fixes: https://bugs.debian.org/810589
This commit is contained in:
Guillem Jover 2017-01-10 04:27:25 +01:00
parent 368af99f55
commit db7470b048
1 changed files with 25 additions and 0 deletions
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25
include/bsd/sys/cdefs.h
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@ -24,15 +24,40 @@
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * 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 #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> #include_next <sys/cdefs.h>
#endif
#else #else
#if __has_include(<sys/cdefs.h>)
#include <sys/cdefs.h> #include <sys/cdefs.h>
#endif #endif
#endif
#ifndef LIBBSD_SYS_CDEFS_H #ifndef LIBBSD_SYS_CDEFS_H
#define 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. * Some kFreeBSD headers expect those macros to be set for sanity checks.
*/ */