I am tried to build sage. I ran   ./configure   followed by   make. Here's 
the output. Could not figure out why. 

[sagelib-8.7] Removing 
/Users/satya/Downloads/SageMath/local/lib/python2.7/site-packages/sage-8.7-py2.7.egg-info

[sagelib-8.7] Writing 
/Users/satya/Downloads/SageMath/local/lib/python2.7/site-packages/sage-8.7-py2.7.egg-info

[sagelib-8.7] Cleaning up stale installed files....

[sagelib-8.7] - cleaning 
/Users/satya/Downloads/SageMath/local/lib/python2.7/site-packages

[sagelib-8.7] - cleaning build/lib.macosx-10.9-x86_64-2.7

[sagelib-8.7] Finished cleaning, time: 0.40 seconds.

[sagelib-8.7] if [ "$UNAME" = "CYGWIN" ]; then                         \

[sagelib-8.7]     sage-rebase.sh "$SAGE_LOCAL" 2>/dev/null;            \

[sagelib-8.7] fi

[sagelib-8.7] 

[sagelib-8.7] real 19m37.851s

[sagelib-8.7] user 59m16.416s

[sagelib-8.7] sys 2m58.759s

cp /Users/satya/Downloads/SageMath/src/bin/sage-env-config 
/Users/satya/Downloads/SageMath/local/bin/sage-env-config

cd ../.. && sage-logger -p './sage --docbuild --no-pdf-links all html ' 
logs/dochtml.log

[dochtml] Traceback (most recent call last):

[dochtml]   File 
"/Users/satya/Downloads/SageMath/local/lib/python2.7/runpy.py", line 163, 
in _run_module_as_main

[dochtml]     mod_name, _Error)

[dochtml]   File 
"/Users/satya/Downloads/SageMath/local/lib/python2.7/runpy.py", line 111, 
in _get_module_details

[dochtml]     __import__(mod_name)  # Do not catch exceptions initializing 
package

[dochtml]   File 
"/Users/satya/Downloads/SageMath/local/lib/python2.7/site-packages/sage_setup/docbuild/__init__.py",
 
line 60, in <module>

[dochtml]     import sage.all

[dochtml]   File 
"/Users/satya/Downloads/SageMath/local/lib/python2.7/site-packages/sage/all.py",
 
line 98, in <module>

[dochtml]     from sage.symbolic.all   import *

[dochtml]   File 
"/Users/satya/Downloads/SageMath/local/lib/python2.7/site-packages/sage/symbolic/all.py",
 
line 3, in <module>

[dochtml]     from sage.libs.pynac.pynac import I

[dochtml]   File "sage/symbolic/expression.pxd", line 4, in init 
sage.libs.pynac.pynac (build/cythonized/sage/libs/pynac/pynac.cpp:30147)

[dochtml]   File "sage/symbolic/expression.pyx", line 161, in init 
sage.symbolic.expression 
(build/cythonized/sage/symbolic/expression.cpp:74075)

[dochtml] ImportError: 
dlopen(/Users/satya/Downloads/SageMath/local/lib/python2.7/site-packages/sage/symbolic/ring.so,
 
2): Symbol not found: 
__ZNSt3__16vectorIN5GiNaC2exENS_9allocatorIS2_EEE11__vallocateEm

[dochtml]   Referenced from: 
/Users/satya/Downloads/SageMath/local/lib/python2.7/site-packages/sage/symbolic/ring.so

[dochtml]   Expected in: flat namespace

[dochtml]  in 
/Users/satya/Downloads/SageMath/local/lib/python2.7/site-packages/sage/symbolic/ring.so

make[3]: *** [doc-html] Error 1

make[2]: *** [all-start] Error 2


real 19m41.468s

user 59m18.862s

sys 3m0.256s

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

Error building Sage.


The following package(s) may have failed to build (not necessarily

during this run of 'make all-start'):


The build directory may contain configuration files and other potentially

helpful information. WARNING: if you now run 'make' again, the build

directory will, by default, be deleted. Set the environment variable

SAGE_KEEP_BUILT_SPKGS to 'yes' to prevent this.


make[1]: *** [all-start] Error 1

make: *** [all] Error 2

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