AC_SUBST(NDR_NBT_CFLAGS)
AC_SUBST(NDR_NBT_LIBS)

if test x"$with_samba" = xyes; then
    PKG_CHECK_MODULES(NDR_NBT, ndr_nbt, ,
        AC_MSG_ERROR([[Please install Samba 4 development libraries.
Samba 4 libraries are necessary for building ad and ipa provider.
If you do not want to build these providers it is possible to build SSSD
without them. In this case, you will need to execute configure script
with argument --without-samba
    ]]))
fi