You should add the contents of `/nix/store/a38s6xvp9kb9vcvydlrf40602ywsmgz5-libtool-1.5.26/share/aclocal/libtool.m4' to `aclocal.m4'.
Putting files in AC_CONFIG_AUX_DIR, `config'.
configure.ac: installing `config/install-sh'
configure.ac: installing `config/missing'
src/bin2c/Makefile.am: installing `config/depcomp'