Install m4 macros into default $datadir/aclocal
Install the m4 macros in location where autoconf will find them by default.
Adjust xdt-autogen to depend on the default location while still respect any set ACLOCAL_FLAGS or XDT_ACLOCAL_FLAGS.
Install the m4 macros in location where autoconf will find them by default.
Adjust xdt-autogen to depend on the default location while still respect any set ACLOCAL_FLAGS or XDT_ACLOCAL_FLAGS.