The cMap data files installed by the poppler-data package are
under the COPYING.adobe license

The cidToUnicode, nameToUnicode and unicodeMap data files
installed by the poppler-data package are Copyright Glyph & Cog, LLC
and are under the COPYING.gpl2 license

The Makefile is licensed under the MIT license:

    Copyright © 2006 Red Hat, Inc
    
    Permission to use, copy, modify, distribute, and sell this
    software and its documentation for any purpose is hereby granted
    without fee, provided that the above copyright notice appear in
    all copies and that both that copyright notice and this permission
    notice appear in supporting documentation, and that the name of
    Red Hat, Inc not be used in advertising or publicity pertaining to
    distribution of the software without specific, written prior
    permission.  Red Hat, Inc makes no representations about the
    suitability of this software for any purpose.  It is provided "as
    is" without express or implied warranty.
    
    RED HAT, INC DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
    SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
    FITNESS, IN NO EVENT SHALL RED HAT, INC BE LIABLE FOR ANY SPECIAL,
    INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
    RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
    OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.