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Remove AC_HEADER_DIRENT

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POSIX.1-2001 defines 'struct dirent' in <dirent.h>.  It replaces
the old 'struct direct' found in BSDs.  All of the systems that I
checked (including FreeBSD, NetBSD, and OpenBSD), now provide
<dirent.h> with 'struct dirent', as mandated by POSIX.

Since autoconf first checks <dirent.h> and only if it's missing it
checks other header files, it's clear that it will always find
<dirent.h>, so let's simplify.

GNU autoconf documentation declares this macro as obsolescent, and
acknowledges that all current systems with directory libraries
have <dirent.h>:
<https://www.gnu.org/software/autoconf/manual/autoconf-2.70/html_node/Particular-Headers.html>

Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
This commit is contained in:
Alejandro Colomar 2021-12-30 14:09:29 +01:00 committed by Serge Hallyn
parent 39eea79d8d
commit 79e28694ef
2 changed files with 2 additions and 16 deletions
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1
configure.ac
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@ -37,7 +37,6 @@ AM_PROG_LIBTOOL
dnl Checks for libraries.
dnl Checks for header files.
AC_HEADER_DIRENT
AC_HEADER_SYS_WAIT
AC_HEADER_STDBOOL

17
lib/defines.h
View File

@ -117,21 +117,8 @@ static inline void memzero(void *ptr, size_t size)
#define strzero(s) memzero(s, strlen(s)) /* warning: evaluates twice */
#ifdef HAVE_DIRENT_H /* DIR_SYSV */
# include <dirent.h>
# define DIRECT dirent
#else
# ifdef HAVE_SYS_NDIR_H /* DIR_XENIX */
# include <sys/ndir.h>
# endif
# ifdef HAVE_SYS_DIR_H /* DIR_??? */
# include <sys/dir.h>
# endif
# ifdef HAVE_NDIR_H /* DIR_BSD */
# include <ndir.h>
# endif
# define DIRECT direct
#endif
#include <dirent.h>
#define DIRECT dirent
/*
* Possible cases: