running egg_info 
 writing requirements to src/cryptography.egg-info/requires.txt 
 writing src/cryptography.egg-info/PKG-INFO 
 writing top-level names to src/cryptography.egg-info/top_level.txt 
 writing dependency_links to src/cryptography.egg-info/dependency_links.txt 
 writing entry points to src/cryptography.egg-info/entry_points.txt 
 reading manifest file 'src/cryptography.egg-info/SOURCES.txt' 
 reading manifest template 'MANIFEST.in' 
 no previously-included directories found matching 'docs/_build' 
 warning: no previously-included files matching '*' found under directory 'vectors' 
 writing manifest file 'src/cryptography.egg-info/SOURCES.txt' 
 running build_ext 
 generating cffi module 'build/temp.linux-x86_64-2.7/_padding.c' 
 creating build/temp.linux-x86_64-2.7 
 generating cffi module 'build/temp.linux-x86_64-2.7/_constant_time.c' 
 generating cffi module 'build/temp.linux-x86_64-2.7/_openssl.c' 
 building '_openssl' extension 
 creating build/temp.linux-x86_64-2.7/build 
 creating build/temp.linux-x86_64-2.7/build/temp.linux-x86_64-2.7 
 gcc -pthread -fno-strict-aliasing -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic -D_GNU_SOURCE -fPIC -fwrapv -DNDEBUG -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic -D_GNU_SOURCE -fPIC -fwrapv -fPIC -I/usr/include/python2.7 -c build/temp.linux-x86_64-2.7/_openssl.c -o build/temp.linux-x86_64-2.7/build/temp.linux-x86_64-2.7/_openssl.o 
 build/temp.linux-x86_64-2.7/_openssl.c:434:30: fatal error: openssl/opensslv.h: No such file or directory 
 #include <openssl/opensslv.h> 
     ^ 
 compilation terminated. 
 error: command 'gcc' failed with exit status 1 
 
 ---------------------------------------- 
Command "/usr/bin/python2 -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-hRMlG0/cryptography/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-ReCoWo-record/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /tmp/pip-build-hRMlG0/cryptography/ 
[root@AY131203102210033c39Z ~]# yum install openssl build/temp.linux-x86_64-2.7/_openssl.c:434:30: fatal error: openssl/opensslv.h: No such file or directory 
^C 
 
Exiting on user cancel. 

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Installed Packages 
Name : openssl 
Arch : x86_64 
Epoch : 1 
Version : 1.0.1e 
Release : 60.el7_3.1 
Size : 1.5 M 
Repo : installed 
Summary : Utilities from the general purpose cryptography library with TLS implementation 
URL  : http://www.openssl.org/ 
License : OpenSSL 
Description : The OpenSSL toolkit provides support for secure communications between 
  : machines. OpenSSL includes a certificate management tool and shared 
  : libraries which provide various cryptographic algorithms and 
  : protocols.