^~~~~~~~~~~~~~~~~~~~~~~~~
    x86_64-linux-gnu-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fno-strict-aliasing -Wdate-time -D_FORTIFY_SOURCE=2 -g -fdebug-prefix-map=/build/python2.7-ZZaKJ6/python2.7-2.7.13=. -fstack-protector-strong -Wformat -Werror=format-security -fPIC -I/usr/include/python2.7 -c src/md5.c -o build/temp.linux-x86_64-2.7/src/md5.o
    x86_64-linux-gnu-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fno-strict-aliasing -Wdate-time -D_FORTIFY_SOURCE=2 -g -fdebug-prefix-map=/build/python2.7-ZZaKJ6/python2.7-2.7.13=. -fstack-protector-strong -Wformat -Werror=format-security -fPIC -I/usr/include/python2.7 -c src/primetester.c -o build/temp.linux-x86_64-2.7/src/primetester.o
    x86_64-linux-gnu-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fno-strict-aliasing -Wdate-time -D_FORTIFY_SOURCE=2 -g -fdebug-prefix-map=/build/python2.7-ZZaKJ6/python2.7-2.7.13=. -fstack-protector-strong -Wformat -Werror=format-security -fPIC -I/usr/include/python2.7 -c src/MurmurHash3.cpp -o build/temp.linux-x86_64-2.7/src/MurmurHash3.o
    cc1plus: warning: command line option ‘-Wstrict-prototypes’ is valid for C/ObjC but not for C++
    x86_64-linux-gnu-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fno-strict-aliasing -Wdate-time -D_FORTIFY_SOURCE=2 -g -fdebug-prefix-map=/build/python2.7-ZZaKJ6/python2.7-2.7.13=. -fstack-protector-strong -Wformat -Werror=format-security -fPIC -I/usr/include/python2.7 -c src/pybloomfilter.c -o build/temp.linux-x86_64-2.7/src/pybloomfilter.o
    In file included from src/pybloomfilter.c:348:0:
    /usr/include/python2.7/pythread.h:5:1: warning: ‘always_inline’ attribute ignored [-Wattributes]
     typedef void *PyThread_type_lock;
     ^~~~~~~
    src/pybloomfilter.c:828:1: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
     __PYX_EXTERN_C DL_IMPORT(int) errno;
     ^~~~~~~~~~~~~~
    creating build/lib.linux-x86_64-2.7
    x86_64-linux-gnu-g++ -pthread -shared -Wl,-O1 -Wl,-Bsymbolic-functions -Wl,-Bsymbolic-functions -Wl,-z,relro -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -Wdate-time -D_FORTIFY_SOURCE=2 -g -fdebug-prefix-map=/build/python2.7-ZZaKJ6/python2.7-2.7.13=. -fstack-protector-strong -Wformat -Werror=format-security -Wl,-Bsymbolic-functions -Wl,-z,relro -Wdate-time -D_FORTIFY_SOURCE=2 -g -fdebug-prefix-map=/build/python2.7-ZZaKJ6/python2.7-2.7.13=. -fstack-protector-strong -Wformat -Werror=format-security build/temp.linux-x86_64-2.7/src/mmapbitarray.o build/temp.linux-x86_64-2.7/src/bloomfilter.o build/temp.linux-x86_64-2.7/src/md5.o build/temp.linux-x86_64-2.7/src/primetester.o build/temp.linux-x86_64-2.7/src/MurmurHash3.o build/temp.linux-x86_64-2.7/src/pybloomfilter.o -lcrypto -o build/lib.linux-x86_64-2.7/pybloomfilter.so
    /usr/bin/ld: cannot find -lcrypto
    collect2: error: ld returned 1 exit status
    error: command 'x86_64-linux-gnu-g++' failed with exit status 1

    ----------------------------------------
Command "/usr/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-elB1Ho/pybloomfiltermmap/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-SNqcbU-record/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /tmp/pip-build-elB1Ho/pybloomfiltermmap/