/usr/share/dune/aclocal/ is in libdune-common-dev 2.3.1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/dune/aclocal/acx_blas.m4
/usr/share/dune/aclocal/acx_lapack.m4
/usr/share/dune/aclocal/acx_mpi.m4
/usr/share/dune/aclocal/acx_pthread.m4
/usr/share/dune/aclocal/ax_boost_base.m4
/usr/share/dune/aclocal/ax_check_gl.m4
/usr/share/dune/aclocal/ax_lang_compiler_ms.m4
/usr/share/dune/aclocal/boost_fusion.m4
/usr/share/dune/aclocal/cxx0x_compiler.m4
/usr/share/dune/aclocal/cxx0x_nullptr.m4
/usr/share/dune/aclocal/cxx0x_rvaluereference.m4
/usr/share/dune/aclocal/cxx0x_static_assert.m4
/usr/share/dune/aclocal/cxx0x_variadic.m4
/usr/share/dune/aclocal/cxx0x_variadic_constructor_sfinae.m4
/usr/share/dune/aclocal/cxx11_conditional.m4
/usr/share/dune/aclocal/cxx11_constexpr.m4
/usr/share/dune/aclocal/cxx11_initializer_list.m4
/usr/share/dune/aclocal/dune.m4
/usr/share/dune/aclocal/dune_all.m4
/usr/share/dune/aclocal/dune_autobuild.m4
/usr/share/dune/aclocal/dune_boost_base.m4
/usr/share/dune/aclocal/dune_check_lib.m4
/usr/share/dune/aclocal/dune_common.m4
/usr/share/dune/aclocal/dune_compiler.m4
/usr/share/dune/aclocal/dune_cxa_demangle.m4
/usr/share/dune/aclocal/dune_deprecated.m4
/usr/share/dune/aclocal/dune_deprecated_cppflags.m4
/usr/share/dune/aclocal/dune_docu.m4
/usr/share/dune/aclocal/dune_fortran.m4
/usr/share/dune/aclocal/dune_linkcxx.m4
/usr/share/dune/aclocal/dune_mpi.m4
/usr/share/dune/aclocal/dune_streams.m4
/usr/share/dune/aclocal/dune_tr1_headers.m4
/usr/share/dune/aclocal/dune_unused.m4
/usr/share/dune/aclocal/fortran_overwrite.m4
/usr/share/dune/aclocal/gmp.m4
/usr/share/dune/aclocal/hdf5.m4
/usr/share/dune/aclocal/immdx_lib_metis.m4
/usr/share/dune/aclocal/inkscape.m4
/usr/share/dune/aclocal/libtoolcompat.m4
/usr/share/dune/aclocal/make_shared.m4
/usr/share/dune/aclocal/mpi-config.m4
/usr/share/dune/aclocal/mprotect.m4
/usr/share/dune/aclocal/opengl.m4
/usr/share/dune/aclocal/parmetis.m4
/usr/share/dune/aclocal/shared_ptr.m4
/usr/share/dune/aclocal/umfpack.m4
/usr/share/dune/aclocal/xdr.m4