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997b28d07b
If HAVE_SYS_ERRLIST is false, nothing uses them anyway, so the declarations serve no purpose. Just breaks the compile if the library actually defines them (and we are avoiding using them).
51 lines
1.4 KiB
C
51 lines
1.4 KiB
C
/* Generic errno.h */
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/* $OpenLDAP$ */
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/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
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*
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* Copyright 1998-2020 The OpenLDAP Foundation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted only as authorized by the OpenLDAP
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* Public License.
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*
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* A copy of this license is available in file LICENSE in the
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* top-level directory of the distribution or, alternatively, at
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* <http://www.OpenLDAP.org/license.html>.
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*/
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#ifndef _AC_ERRNO_H
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#define _AC_ERRNO_H
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#if defined( HAVE_ERRNO_H )
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# include <errno.h>
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#elif defined( HAVE_SYS_ERRNO_H )
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# include <sys/errno.h>
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#endif
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#if defined( HAVE_SYS_ERRLIST ) && defined( DECL_SYS_ERRLIST )
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/* have sys_errlist but need declaration */
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LDAP_LIBC_V(int) sys_nerr;
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LDAP_LIBC_V(char) *sys_errlist[];
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#endif
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#undef _AC_ERRNO_UNKNOWN
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#define _AC_ERRNO_UNKNOWN "unknown error"
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#ifdef HAVE_SYS_ERRLIST
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/* this is thread safe */
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# define STRERROR(e) ( (e) > -1 && (e) < sys_nerr \
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? sys_errlist[(e)] : _AC_ERRNO_UNKNOWN )
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#elif defined( HAVE_STRERROR )
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/* this may not be thread safe */
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/* and, yes, some implementations of strerror may return NULL */
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# define STRERROR(e) ( strerror(e) \
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? strerror(e) : _AC_ERRNO_UNKNOWN )
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#else
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/* this is thread safe */
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# define STRERROR(e) ( _AC_ERRNO_UNKNOWN )
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#endif
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#endif /* _AC_ERRNO_H */
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