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| = How can I compile/install additional software on a linux tardis workstation? = Regular (non-root) users cannot use the commands {{{apt-get}}}, {{{aptitude}}} or {{{dpkg}}} in order to install precompiled .deb-packages on a tardis machine. However, you may download the source code, compile it and install the desired software in your home-directory. The following description may vary as the case arises (the README and INSTALL files in the source code directory usually give detailed information). |
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| * Download source code * Enter source code directory and execute {{{./configure --prefix=/home/$USER/package}}}. The configure script checks for all necessary dependent libraries and creates all make files. If {{{./configure}}} fails or if you prefer a particular library over another you must set the necessary path variables. |
= How can I compile/install additional software on a managed linux workstation? = |
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| * Remark: Most libraries are contained in {{{/usr/lib/}}} and don't need to be specified. If a desired library is not found, you may check {{{/usr/pack/}}} or [[http://www.sepp.ee.ethz.ch/sepp-debian/|www.sepp.ee.ethz.ch/sepp-debian/]] for the path (more friendly: you can also use the command {{{sepp}}} for that). | Only system administrators with elevated privileges (a.k.a. ''sudo'' or ''root'' privileges) are allowed to use the commands `apt`, `apt-get` or `dpkg` to install pre-compiled .deb-packages on a managed linux client. |
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| * {{{./configure --help}}} shows you which variables can be set. Here are the most important ones: ||<tablewidth="763px" tableheight="118px">'''Variable''' ||'''Meaning''' || ||{{{PREFIX}}} ||toplevel directory path, should be in your homedirectory. It is an argument of the configure script, e.g. {{{./configure --prefix=/home/$USER/package}}} || ||{{{CFLAGS}}} ||C-Compiler options (usually {{{gcc}}} on Linux), e.g. include directory specifications. For an include directory use {{{-I}}} (capital i) option, e.g. {{{CFLAGS=-I<inlcude-directory>.}}} You may use multiple {{{-I/path}}} in this variable, use whitespace for separation. || ||{{{CXXFLAGS}}} ||C++-Compiler options (usually {{{g++}}} on Linux), e.g. include directory specifications || ||{{{LDFLAGS}}} ||linker flags. Use {{{-L}}} option for link-time-directory and {{{-Wl,-rpath,}}} (will be passed to {{{ld}}}) for run-time directory (both directories are the same), e.g. {{{LDFLAGS="-L<link-directory> -Wl,-rpath,<link-directory>"}}} Remark: The {{{-Wl,-rpath,}}} option is for linux, on solaris you may want to use {{{-R}}} instead. Use whitespace as separation for more paths. || |
As a possible way around his restriction, most software can be built from its source code and installed without elevated privileges to a custom location. Details to install software from its source code are typically listed in accompanying files named `README` and `INSTALL`, the following describes a generic installation process: |
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| Hint: You may use {{{pkg-config}}} to set these variables, check [[Workstations/Linux/Applications/PKGConfig|PKGConfig]] for more information. | == Generic installation process == |
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| * Once the configure script terminated successfully, execute {{{make}}} in order to compile source code. On Solaris you must use {{{gmake}}} instead of {{{make}}}. * Execute {{{make install}}} in order to install software. Again, on Solaris you must use {{{gmake install}}}. |
* Download a source code archive, unpack it and enter the source code directory * Execute the command {{{ ./configure --prefix=/home/$USER/package }}} . The `configure` script checks for dependencies necessary to build the software and creates the so-called `Makefile`. If it fails due to missing dependencies, install those first and set the necessary environment variables to make them available (see table below) * `configure --help` lists options and environment variables possible to pass to the script * Execute the command `make` to build the software * Execute the commande `make install` to install it |
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| * In conclusion, here is an example of the whole process (tcsh on Linux): {{{ > setenv CFLAGS "-I<include-path>" > setenv LDFLAGS "-L<link-directory> -Wl,-rpath,<link-directory>" > ./configure --prefix=<path> ... > make ... > make install ... > |
||''Variable''' ||'''Meaning''' || ||`PREFIX` ||Toplevel directory path where the software is going to be installed|| ||`CPPFLAGS` ||C preprocessor environment variable to add directories containing library headers in a custom location|| ||`LDFLAGS` ||Linker environment variable to add directories containing libraries installed in a custom location|| == Simplified example == The directory `opt` serves as the location for all custom-built software in the following examples. === Install a software where all dependencies are available === {{{ ./configure --prefix=/home/$USER/opt make make install |
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| Remark: {{{setenv}}} is used in tcsh which is the standard shell on tardis workstations. If you use bash you may want to use the command {{{export}}} instead. | === Install software depending on previously built libraries === {{{ export CPPFLAGS=-I/home/$USER/opt/include export LDFLAGS=-I/home/$USER/opt/lib ./configure --prefix=/home/$USER/opt make make install }}} |
How can I compile/install additional software on a managed linux workstation?
Only system administrators with elevated privileges (a.k.a. sudo or root privileges) are allowed to use the commands apt, apt-get or dpkg to install pre-compiled .deb-packages on a managed linux client.
As a possible way around his restriction, most software can be built from its source code and installed without elevated privileges to a custom location. Details to install software from its source code are typically listed in accompanying files named README and INSTALL, the following describes a generic installation process:
Generic installation process
- Download a source code archive, unpack it and enter the source code directory
Execute the command ./configure --prefix=/home/$USER/package
The configure script checks for dependencies necessary to build the software and creates the so-called Makefile. If it fails due to missing dependencies, install those first and set the necessary environment variables to make them available (see table below)
configure --help lists options and environment variables possible to pass to the script
Execute the command make to build the software
Execute the commande make install to install it
Variable |
Meaning |
PREFIX |
Toplevel directory path where the software is going to be installed |
CPPFLAGS |
C preprocessor environment variable to add directories containing library headers in a custom location |
LDFLAGS |
Linker environment variable to add directories containing libraries installed in a custom location |
Simplified example
The directory opt serves as the location for all custom-built software in the following examples.
Install a software where all dependencies are available
./configure --prefix=/home/$USER/opt make make install
Install software depending on previously built libraries
export CPPFLAGS=-I/home/$USER/opt/include export LDFLAGS=-I/home/$USER/opt/lib ./configure --prefix=/home/$USER/opt make make install