[PATCH 15/27] configure: don't check for readdir

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readdir has been part of Posix since the very beginning.

Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
 configure.ac          |  1 -
 include/builddefs.in  |  1 -
 io/Makefile           |  7 +------
 io/io.h               |  7 -------
 m4/package_libcdev.m4 | 17 -----------------
 5 files changed, 1 insertion(+), 32 deletions(-)

diff --git a/configure.ac b/configure.ac
index 7c1248583..6510a4fb3 100644
--- a/configure.ac
+++ b/configure.ac
@@ -168,7 +168,6 @@ AC_HAVE_PREADV
 AC_HAVE_COPY_FILE_RANGE
 AC_HAVE_SYNCFS
 AC_HAVE_FLS
-AC_HAVE_READDIR
 AC_HAVE_FSETXATTR
 AC_HAVE_MREMAP
 AC_NEED_INTERNAL_FSXATTR
diff --git a/include/builddefs.in b/include/builddefs.in
index 247dd9956..4951ae9d9 100644
--- a/include/builddefs.in
+++ b/include/builddefs.in
@@ -95,7 +95,6 @@ HAVE_PREADV = @have_preadv@
 HAVE_PWRITEV2 = @have_pwritev2@
 HAVE_COPY_FILE_RANGE = @have_copy_file_range@
 HAVE_SYNCFS = @have_syncfs@
-HAVE_READDIR = @have_readdir@
 HAVE_FLS = @have_fls@
 HAVE_FSETXATTR = @have_fsetxattr@
 HAVE_MREMAP = @have_mremap@
diff --git a/io/Makefile b/io/Makefile
index 0709f8f21..837716238 100644
--- a/io/Makefile
+++ b/io/Makefile
@@ -14,7 +14,7 @@ CFILES = init.c \
 	link.c mmap.c open.c parent.c pread.c prealloc.c pwrite.c reflink.c \
 	resblks.c scrub.c seek.c shutdown.c stat.c swapext.c sync.c \
 	truncate.c utimes.c fadvise.c sendfile.c madvise.c mincore.c fiemap.c \
-	sync_file_range.c
+	sync_file_range.c readdir.c
 
 LLDLIBS = $(LIBXCMD) $(LIBHANDLE) $(LIBFROG) $(LIBPTHREAD) $(LIBUUID)
 LTDEPENDENCIES = $(LIBXCMD) $(LIBHANDLE) $(LIBFROG)
@@ -46,11 +46,6 @@ ifeq ($(HAVE_PWRITEV2),yes)
 LCFLAGS += -DHAVE_PWRITEV2
 endif
 
-ifeq ($(HAVE_READDIR),yes)
-CFILES += readdir.c
-LCFLAGS += -DHAVE_READDIR
-endif
-
 ifeq ($(HAVE_MREMAP),yes)
 LCFLAGS += -DHAVE_MREMAP
 endif
diff --git a/io/io.h b/io/io.h
index ad025c51d..e807bb0de 100644
--- a/io/io.h
+++ b/io/io.h
@@ -129,15 +129,8 @@ extern void		copy_range_init(void);
 #endif
 
 extern void		sync_range_init(void);
-
-#ifdef HAVE_READDIR
 extern void		readdir_init(void);
-#else
-#define readdir_init()		do { } while (0)
-#endif
-
 extern void		reflink_init(void);
-
 extern void		cowextsize_init(void);
 
 #ifdef HAVE_GETFSMAP
diff --git a/m4/package_libcdev.m4 b/m4/package_libcdev.m4
index 5a2290de1..25d869841 100644
--- a/m4/package_libcdev.m4
+++ b/m4/package_libcdev.m4
@@ -91,23 +91,6 @@ syncfs(0);
     AC_SUBST(have_syncfs)
   ])
 
-#
-# Check if we have a readdir libc call
-#
-AC_DEFUN([AC_HAVE_READDIR],
-  [ AC_MSG_CHECKING([for readdir])
-    AC_LINK_IFELSE(
-    [	AC_LANG_PROGRAM([[
-#include <dirent.h>
-	]], [[
-readdir(0);
-	]])
-    ], have_readdir=yes
-       AC_MSG_RESULT(yes),
-       AC_MSG_RESULT(no))
-    AC_SUBST(have_readdir)
-  ])
-
 #
 # Check if we have a flc call (Mac OS X)
 #
-- 
2.39.2





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