Remove AC_HEADER_DIRENT
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>
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@ -37,7 +37,6 @@ AM_PROG_LIBTOOL
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dnl Checks for libraries.
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dnl Checks for header files.
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AC_HEADER_DIRENT
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AC_HEADER_SYS_WAIT
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AC_HEADER_STDBOOL
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@ -117,21 +117,8 @@ static inline void memzero(void *ptr, size_t size)
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#define strzero(s) memzero(s, strlen(s)) /* warning: evaluates twice */
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#ifdef HAVE_DIRENT_H /* DIR_SYSV */
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# include <dirent.h>
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# define DIRECT dirent
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#else
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# ifdef HAVE_SYS_NDIR_H /* DIR_XENIX */
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# include <sys/ndir.h>
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# endif
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# ifdef HAVE_SYS_DIR_H /* DIR_??? */
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# include <sys/dir.h>
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# endif
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# ifdef HAVE_NDIR_H /* DIR_BSD */
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# include <ndir.h>
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# endif
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# define DIRECT direct
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#endif
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#include <dirent.h>
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#define DIRECT dirent
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/*
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* Possible cases:
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