Use this documentation with care! It describes
the outdated version 7, which was actively
developed around 2014 and is considered dead by the
This documentation reflects the latest update of the v7-stable branch. It describes the 7.6.8 version, which was never released. As such, it contains some content that does not apply to any released version.
To obtain the doc that properly matches your installed v7 version, obtain the doc set from your distro. Each version of rsyslog contained the version that exactly matches it.
As general advise, it is strongly suggested to upgrade to the current version supported by the rsyslog project. The current version can always be found on the right-hand side info box on the rsyslog web site.
Note that there is only limited rsyslog community support available for the outdated v7 version (officially we do not support it at all, but we usually are able to answer simple questions). If you need to stick with v7, it probably is best to ask your distribution for support.
Installing rsyslog from the source repository¶
In most cases, people install rsyslog either via a package or use an “official” distribution tarball to generate it. But there may be situations where it is desirable to build directly from the source repository. This is useful for people who would like to participate in development or who would like to use the latest, not-yet-released code. The later may especially be the case if you are asked to try out an experimental version.
Building from the repsitory is not much different than building from the source tarball, but some files are missing because they are output files and thus do not belong into the repository.
Obtaining the Source¶
First of all, you need to download the sources. Rsyslog is kept in git. The “Where to find the rsyslog source code” page on the project site will point you to the current repository location.
After you have cloned the repository, you are in the master branch by default. This is where we keep the devel branch. If you need any other branch, you need to do a “git checkout –track -b branch origin/branch”. For example, the command to check out the beta branch is “git checkout –track -b beta origin/beta”.
To build the compilation system, you need
- GNU autotools (autoconf, automake, …)
Unfortunately, the actual package names vary between distributions. Doing a search for the names above inside the packaging system should lead to the right path, though.
If some of these tools are missing, you will see errors like this one:
checking for SYSLOG_UNIXAF support... yes checking for FSSTND support... yes ./configure: line 25895: syntax error near unexpected token `RELP,' ./configure: line 25895: ` PKG_CHECK_MODULES(RELP, relp >= 0.1.1)'
The actual error message will vary. In the case shown here, pkg-config was missing.
Important: the build dependencies must be present before creating the build environment is begun. Otherwise, some hard to interpret errors may occur. For example, the error above will also occur if you install pkg-config, but after you have run autoreconf. So be sure everything is in place before you create the build environment.
Creating the Build Environment¶
This is fairly easy: just issue “autoreconf -fvi”, which should do everything you need. Once this is done, you can follow the usual ./configure steps just like when you downloaded an official distribution tarball (see the rsyslog install guide, starting at step 2, for further details about that).