+AC_SUBST([PTHREAD_LDADD], [$PTHREAD_LDADD])
+
+AC_MSG_CHECKING([whether to include support for ntfs-3g])
+AC_ARG_WITH([ntfs-3g],
+ AS_HELP_STRING([--without-ntfs-3g], [build without NTFS-3g.
+ This will disable the ability to use NTFS-specific
+ information when capturing or applying WIMs to a
+ NTFS filesystem.]),
+ [WITH_NTFS_3G=$withval],
+ [WITH_NTFS_3G=yes]
+ )
+AC_MSG_RESULT([$WITH_NTFS_3G])
+if test "x$WITH_NTFS_3G" = "xyes"; then
+ AC_DEFINE([WITH_NTFS_3G], [1], [Define to 1 to enable support for
+ NTFS-specific information])
+
+ dnl This effectively checks for NTFS-3g 2011.4.12 or later
+ AC_CHECK_LIB([ntfs-3g], [ntfs_xattr_system_setxattr], [],
+ [AC_MSG_ERROR([Cannot find libntfs-3g version 2011-4-12
+ or later. Without libntfs-3g, wimlib cannot include support for
+ capturing and applying WIMs on NTFS filesystems while preserving
+ NTFS-specific data such as security descriptors and alternate data
+ streams. You should either install libntfs-3g, or configure with
+ --without-ntfs-3g to disable support for these NTFS-specific
+ features.])])
+ LIBNTFS_3G_LDADD="`pkg-config --libs libntfs-3g`"
+ LIBNTFS_3G_CFLAGS="`pkg-config --cflags libntfs-3g`"
+
+ dnl This checks for a NTFS-3g interface that was changed in the
+ dnl 2013.1.13 release
+ AC_CHECK_DECL([NTFS_MNT_RDONLY],
+ [AC_DEFINE([HAVE_NTFS_MNT_RDONLY],
+ [1],
+ [Define to 1 if ntfs_mount() takes the flag NTFS_MNT_RDONLY])],
+ ,
+ [#include <ntfs-3g/volume.h>])
+else
+ LIBNTFS_3G_LDADD=
+ LIBNTFS_3G_CFLAGS=
+fi
+AM_CONDITIONAL([WITH_NTFS_3G], [test "x$WITH_NTFS_3G" = "xyes"])
+
+AC_SUBST([LIBNTFS_3G_LDADD], [$LIBNTFS_3G_LDADD])
+AC_SUBST([LIBNTFS_3G_CFLAGS], [$LIBNTFS_3G_CFLAGS])