I'm on OSX 10.11.6 El Capitan.

sage -i lrslib

tells me the package installs successfully. Then Sage fails to start. Here 
is an excerpt from the crash report:

***************************************************************************

IPython post-mortem report

{'commit_hash': u'44136e4',
 'commit_source': 'installation',
 'default_encoding': 'UTF-8',
 'ipython_path': 
'/Applications/SageMath-7.2.app/Contents/Resources/sage/local/lib/python2.7/site-packages/IPython',
 'ipython_version': '4.1.2',
 'os_name': 'posix',
 'platform': 'Darwin-15.6.0-x86_64-i386-64bit',
 'sys_executable': 
'/Applications/SageMath-7.2.app/Contents/Resources/sage/local/bin/python',
 'sys_platform': 'darwin',
 'sys_version': '2.7.10 (default, Jun  9 2016, 11:40:29) \n[GCC 4.9.3]'}

***************************************************************************



***************************************************************************

Crash traceback:

---------------------------------------------------------------------------
---------------------------------------------------------------------------
ImportErrorPython 2.7.10: 
/Applications/SageMath-7.2.app/Contents/Resources/sage/local/bin/python
                                                   Wed Aug  3 10:34:29 2016
A problem occurred executing Python code.  Here is the sequence of function
calls leading up to the error, with the most recent (innermost) call last.
/Applications/SageMath-7.2.app/Contents/Resources/sage/src/bin/sage-ipython 
in <module>()
      1 #!/usr/bin/env python
      2 # -*- coding: utf-8 -*-
      3 """
      4 Sage IPython startup script.
      5 """
      6 
      7 # Install extra readline commands before IPython initialization
      8 from sage.repl.readline_extra_commands import *
      9 
     10 from sage.repl.interpreter import SageTerminalApp
     11 
     12 app = SageTerminalApp.instance()
---> 13 app.initialize()
        global app.initialize = <bound method SageTerminalApp.initialize of 
<sage.repl.interpreter.SageTerminalApp object at 0x10b5cf4d0>>
     14 app.start()

<decorator-gen-111> in 
initialize(self=<sage.repl.interpreter.SageTerminalApp object>, argv=None)

..........
..........

    106                         disc,

/Applications/SageMath-7.2.app/Contents/Resources/sage/local/lib/python2.7/site-packages/sage/misc/functional.py
 
in <module>()
     15 
#*****************************************************************************
     16 #       Copyright (C) 2004 William Stein <------@gmail.com>
     17 #
     18 # This program is free software: you can redistribute it and/or 
modify
     19 # it under the terms of the GNU General Public License as published 
by
     20 # the Free Software Foundation, either version 2 of the License, or
     21 # (at your option) any later version.
     22 #                  http://www.gnu.org/licenses/
     23 
#*****************************************************************************
     24 
     25 import sage.misc.latex
     26 import sage.interfaces.expect
     27 import sage.interfaces.mathematica
     28 
     29 
---> 30 from sage.rings.complex_double import CDF
        global sage.rings.complex_double = undefined
        global CDF = undefined
     31 from sage.rings.real_double import RDF, RealDoubleElement
     32 
     33 import sage.rings.real_mpfr
     34 import sage.rings.complex_field
     35 import sage.rings.integer
     36 
     37 import __builtin__
     38 
     39 LOG_TEN_TWO_PLUS_EPSILON = 3.321928094887363 # a small overestimate 
of log(10,2)
     40 
     41 
##############################################################################
     42 # There are many functions on elements of a ring, which 
mathematicians
     43 # usually write f(x), e.g., it is weird to write x.log() and natural
     44 # to write log(x).  The functions below allow for the more familiar 
syntax.
     45 
##############################################################################

ImportError: 
dlopen(/Applications/SageMath-7.2.app/Contents/Resources/sage/local/lib/python2.7/site-packages/sage/rings/complex_double.so,
 
2): Symbol not found: _gsl_complex_abs
  Referenced from: 
/Applications/SageMath-7.2.app/Contents/Resources/sage/local/lib/python2.7/site-packages/sage/rings/complex_double.so
  Expected in: flat namespace
 in 
/Applications/SageMath-7.2.app/Contents/Resources/sage/local/lib/python2.7/site-packages/sage/rings/complex_double.so

***************************************************************************

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