captive_save_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS -I." # for "config.h" touched above
AC_CHECK_HEADERS(ntfs/types.h ntfs/volume.h,,[ have_libntfs_includes=false ])
CPPFLAGS="$captive_save_CPPFLAGS"
captive_save_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS -I." # for "config.h" touched above
AC_CHECK_HEADERS(ntfs/types.h ntfs/volume.h,,[ have_libntfs_includes=false ])
CPPFLAGS="$captive_save_CPPFLAGS"