构建OpenSSL来编译Python的可移植版本

Question

I am trying to build Python from source and need to include the SSL module for my web scraper to work with it.

I ran into the problem of SSL not being found, so I downloaded and built OpenSSL from source. The problem is, I need to install the development libraries along with OpenSSL in order for Python to run the -lssl parameter correctly when running make . I can't seem to find any documentation on how to build OpenSSL with the development libs, even though I'm sure it's got to be something simple I'm just missing.

I must do this from source; with no package managers. I have my reasons.

EDIT: I have changed a few of the python configuration settings to try and fix the problem, and this is the compile error I am getting now:

gcc -pthread -Xlinker -export-dynamic -o python \\ Modules/python.o \\ libpython2.7.a -lpthread -ldl -lutil -L/home/[username]/openssl-src -lssl -lcrypto -lm
libpython2.7.a(posixmodule.o)(.text+0x4016): In function posix_tmpnam':<br /> ./Modules/posixmodule.c:7346: warning: the use of tmpnam_r' is dangerous, better use mkstemp' libpython2.7.a(posixmodule.o)(.text+0x3f76): In function posix_tempnam': ./Modules/posixmodule.c:7301: warning: the use of tempnam' is dangerous, better use mkstemp'
./python: error while loading shared libraries: libssl.so.1.0.0: cannot open shared object file: No such file or directory
make: * [sharedmods] Error 127

The "no such file or directory" is being thrown looking for a file that does exist in the /home/[username]/openssl-src directory.

Answer 1

The default OpenSSL build should install the appropriate header files and libraries using make install , just make sure to provide the right prefix to the configure script (eg, ./configure --prefix=/usr ).

If this fails, please post the exact error that gcc shows.

By the way, please consider using an automated tool such as buildout for building Python. I think the standard recipes take care of SSL support (possibly even downloading and compiling OpenSSL), although I am not certain about this.

Answer 2

This answer doesn't EXACTLY answer my question, but I did find out what I needed to know so I will post it here. I had to change the location of the SSL files it was looking for to just /usr rather than /usr/local . RedHat by default has all the shared libraries in /usr/lib rather than /usr/local/lib , which is where it was looking by default.

Answer 3

in the Bourne shell (/bin/sh or /bin/bash):

$ LD_LIBRARY_PATH=/usr/local/lib
$ export LD_LIBRARY_PATH
$ make

in the C-shell (/bin/csh or /bin/tcsh):

% setenv LD_LIBRARY_PATH /usr/local/lib
% make