How do I install the OpenSSL libraries on Ubuntu

Question

I m trying to build some code on Ubuntu 10 04 LTS that uses OpenSSL 1 0 0   When I run make  it invokes g   with the  -lssl  option   The source includes    include  lt openssl bio h gt   include  lt openssl buffer h gt   include  lt openssl des h gt   include  lt openssl evp h gt   include  lt openssl pem h gt   include  lt openssl rsa h gt    I ran     sudo apt-get install openssl Reading package lists    Done Building dependency tree        Reading state information    Done openssl is already the newest version  0 upgraded  0 newly installed  0 to remove and 3 not upgraded    But I guess the openssl package doesn t include the library   I get these errors on make   foo cpp 21 25  error  openssl bio h  No such file or directory foo cpp 22 28  error  openssl buffer h  No such file or directory foo cpp 23 25  error  openssl des h  No such file or directory foo cpp 24 25  error  openssl evp h  No such file or directory foo cpp 25 25  error  openssl pem h  No such file or directory foo cpp 26 25  error  openssl rsa h  No such file or directory   How do I install the OpenSSL C   library on Ubuntu 10 04 LTS   I did a man g   and  under  Options for Linking   for the -l option it states    The linker searches a standard list of directories for the library     and  The directories searched include several standard system directories      What are those standard system directories

User · Answer

Go to the official website and download the source code for the version you need

Then unzip the update package and execute the following command

./config --prefix=/usr/local/ssl --openssldir=/usr/local/ssl  -Wl,-rpath,/usr/local/ssl/lib shared

Because the default is to generate only static libraries, if you want dynamic libraries, add the "shared" option

make && make install

User · Answer

You want the openssl-devel package  At least I think it s -devel on Ubuntu   Might be -dev   It s one of the two

User · Answer

Run  apt-get install libssl-dev

User · Answer

As a general rule  when on Debian or Ubuntu and you re missing a development file  or any other file for that matter   use apt-file to figure out which package provides that file     apt-file search openssl bio h android-libboringssl-dev   usr include android openssl bio h libssl-dev   usr include openssl bio h libwolfssl-dev   usr include cyassl openssl bio h libwolfssl-dev   usr include wolfssl openssl bio h   A quick glance at each of the packages that are returned by the command  using apt show will tell you which among the packages is the one you re looking for     apt show libssl-dev Package  libssl-dev Version  1 1 1d-2 Priority  optional Section  libdevel Source  openssl Maintainer  Debian OpenSSL Team  lt pkg-openssl-devel lists alioth debian org gt  Installed-Size  8 095 kB Depends  libssl1 1    1 1 1d-2  Suggests  libssl-doc Conflicts  libssl1 0-dev Homepage  https   www openssl org  Tag  devel  lang c  devel  library  implemented-in  TODO  implemented-in  c   protocol  ssl  role  devel-lib  security  cryptography Download-Size  1 797 kB APT-Sources  http   ftp fr debian org debian unstable main amd64 Packages Description  Secure Sockets Layer toolkit - development files  This package is part of the OpenSSL project s implementation of the SSL  and TLS cryptographic protocols for secure communication over the  Internet      It contains development libraries  header files  and manpages for libssl  and libcrypto   N  There is 1 additional record  Please use the  -a  switch to see it

User · Answer

I found a detailed solution here  Install OpenSSL Manually On Linux  From the blog post         Steps to download  compile  and install are as follows  I m installing version 1 0 1g below  please replace  1 0 1g  with your version number        Step     1   Downloading OpenSSL       Run the command as below          wget http   www openssl org source openssl-1 0 1g tar gz      Also  download the MD5 hash to verify the integrity of the downloaded file for just varifacation purpose  In the same folder where you have downloaded the OpenSSL file from the website          wget http   www openssl org source openssl-1 0 1g tar gz md5     md5sum openssl-1 0 1g tar gz     cat openssl-1 0 1g tar gz md5      Step     2   Extract files from the downloaded package         tar -xvzf openssl-1 0 1g tar gz      Now  enter the directory where the package is extracted like here is openssl-1 0 1g        cd openssl-1 0 1g      Step     3   Configuration OpenSSL      Run below command with optional condition to set prefix and directory where you want to copy files and folder           config --prefix  usr local openssl --openssldir  usr local openssl      You can replace     usr local openssl    with the directory path where you want to copy the files and folders  But make sure while doing this steps check for any error message on terminal       Step     4   Compiling OpenSSL      To compile openssl you will need to run 2 command   make  make install as below          make      Note  check for any error message for verification purpose       Step -5   Installing OpenSSL         sudo make install      Or without sudo         make install      That   s it  OpenSSL has been successfully installed  You can run the version command to see if it worked or not as below           usr local openssl bin openssl version      OpenSSL 1 0 1g 7 Apr 2014

User · Answer

How could I have figured that out for   myself  other than asking this   question here   Can I somehow tell   apt-get to list all packages  and grep   for ssl  Or do I need to know the    lib -dev  naming convention    If you re linking with -lfoo then the library is likely libfoo so   The library itself is probably part of the libfoo package  and the headers are in the libfoo-dev package as you ve discovered   Some people use the GUI  synaptic  app  sudo synaptic  to  locate and  install packages  but I prefer to use the command line   One thing that makes it easier to find the right package from the command line is the fact that apt-get supports bash completion   Try typing sudo apt-get install libssl and then hit tab to see a list of matching package names  which can help when you need to select the correct version of a package that has multiple versions or other variations available    Bash completion is actually very useful    for example  you can also get a list of commands that apt-get supports by typing sudo apt-get and then hitting tab

User · Answer

You want to install the development package  which is libssl-dev   sudo apt-get install libssl-dev

User · Answer

sudo apt-get install libcurl4-openssl-dev

User · Answer

Another way to install openssl library from source code on Ubuntu  follows steps below  here WORKDIR is your working directory   sudo apt-get install pkg-config cd WORKDIR git clone https   github com openssl openssl git cd openssl   config make sudo make install   Open file  etc ld so conf  add a new line    usr local lib  at EOF sudo ldconfig

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