[PATCH 6/6] Add configure check for members of dirent for use in io/readdir.c

[Dave Chinner]

On Tue, Jan 12, 2016 at 09:00:22PM +0100, Felix Janda wrote:
> Signed-off-by: Felix Janda <felix.janda at posteo.de>
> ---
>  configure.ac         |  7 +++++++
>  include/builddefs.in |  4 ++++
>  io/Makefile          | 10 ++++++++++
>  3 files changed, 21 insertions(+)
> 
> diff --git a/configure.ac b/configure.ac
> index feee50a..3d6443a 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -135,5 +135,12 @@ AC_CHECK_SIZEOF([char *])
>  AC_TYPE_UMODE_T
>  AC_MANUAL_FORMAT
>  
> +AC_CHECK_MEMBERS([struct dirent.d_reclen],[],[],[[#include <dirent.h>]])
> +AC_SUBST(ac_cv_member_struct_dirent_d_reclen)
> +AC_CHECK_MEMBERS([struct dirent.d_off],[],[],[[#include <dirent.h>]])
> +AC_SUBST(ac_cv_member_struct_dirent_d_off)
> +AC_CHECK_MEMBERS([struct dirent.d_type],[],[],[[#include <dirent.h>]])
> +AC_SUBST(ac_cv_member_struct_dirent_d_type)
> +
>  AC_CONFIG_FILES([include/builddefs])
>  AC_OUTPUT
> diff --git a/include/builddefs.in b/include/builddefs.in
> index b5ce336..67d963c 100644
> --- a/include/builddefs.in
> +++ b/include/builddefs.in
> @@ -109,6 +109,10 @@ HAVE_FLS = @have_fls@
>  HAVE_FSETXATTR = @have_fsetxattr@
>  HAVE_MREMAP = @have_mremap@
>  
> +HAVE_STRUCT_DIRENT_D_RECLEN = @ac_cv_member_struct_dirent_d_reclen@
> +HAVE_STRUCT_DIRENT_D_OFF = @ac_cv_member_struct_dirent_d_off@
> +HAVE_STRUCT_DIRENT_D_TYPE = @ac_cv_member_struct_dirent_d_type@
> +
>  GCCFLAGS = -funsigned-char -fno-strict-aliasing -Wall
>  #	   -Wbitwise -Wno-transparent-union -Wno-old-initializer -Wno-decl
>  
> diff --git a/io/Makefile b/io/Makefile
> index 0b53f41..9574168 100644
> --- a/io/Makefile
> +++ b/io/Makefile
> @@ -94,6 +94,16 @@ ifeq ($(HAVE_MREMAP),yes)
>  LCFLAGS += -DHAVE_MREMAP
>  endif
>  
> +ifeq ($(HAVE_STRUCT_DIRENT_D_RECLEN),yes)
> +LCFLAGS += -D_DIRENT_HAVE_D_RECLEN
> +endif

The C library should be defining these if those fields are
supported, right?

Cheers,

Dave.
-- 
Dave Chinner
david at fromorbit.com