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For example, to prevent scanning. Software Collection. In case you distribute. Depending on what is defined in your. If the library directory is defined in your.

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If the share directory is defined in your. The two examples above both configure the enable scriptlet so that it ensures that the. In this case, ensure that the. To allow your system to use. The script is preloaded when a shell is started on the system. Use the pc-libdir. Use the pc-datadir. To allow the man command on the system to display manual pages from the enabled Software Collection, update the MANPATH environment variable with the paths to the manual pages that are associated with the Software Collection.

The manual pages associated with the Software Collection are then not visible as long as the Software Collection is not enabled. In this case, ensure that the manual pages are visible to the system even if the Software Collection is disabled. To allow the man command on the system to display manual pages from the disabled Software Collection, update the MANPATH environment variable with the paths to the manual pages associated with the Software Collection. Use the manpage. Software Collection cronjob Support.

With your Software Collection, you can run periodic tasks on the system either with a dedicated service or with cronjobs. Ensure that the contents of the crontab file follow the standard crontab file format, as in the following example:. Software Collection Log File Support. To make the log files more accessible and easier to manage, consider creating the log files outside of the Software Collection's file system hierarchy. Software Collection logrotate Support. With your Software Collection or an application associated with your Software Collection, you can manage log files with the logrotate program.

Ensure that the contents of the logrotate file follow the standard logrotate file format as follows:. Software Collection Lock File Support. In this way, your applications or services' lock file will not be overwritten. The lock file will not be renamed and the name stays the same as the system version.

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Software Collection Configuration Files Support. For many programs, this can be usually done at build or installation time. Software Collection Kernel Module Support. Because Linux kernel modules are normally tied to a particular version of the Linux kernel, you must be careful when you package kernel modules into a Software Collection. This is because the package management system on Red Hat Enterprise Linux does not automatically update or install an updated version of the kernel module if an updated version of the Linux kernel is installed.

To make packaging the kernel modules into the Software Collection easier, see the following recommendations. Ensure that:. Because Software Collections are designed to install the Software Collection packages in an alternate directory, set up the necessary SELinux labels so that SELinux is aware of the alternate directory. If the file system hierarchy of your Software Collection package imitates the file system hierarchy of the corresponding conventional package, you can run the semanage fcontext and restorecon commands to set up the SELinux labels.

The last command ensures that the newly created SELinux policy is properly loaded, and that the files installed by a package in the Software Collection are created with the correct SELinux context. By using this command in the metapackage, you do not need to include the restorecon command in all packages in the Software Collection. Note that the semanage fcontext command is provided by the policycoreutils-python package, therefore it is important that you include policycoreutils-python in Requires for the Software Collection metapackage.

Keep in mind that the semanage -e command, which substitutes the source path for the destination path during labeling, is not supported in Red Hat Enterprise Linux 5. Extending Red Hat Software Collections. Providing an scldevel Subpackage. The purpose of an scldevel subpackage is to make the process of creating dependent Software Collections easier by providing a number of generic macro files. Packagers then use these macro files when they are extending existing Software Collections.

The following section describes creating an scldevel subpackage for Ruby-based Software Collections, ruby and ruby Providing your own scldevel subpackage In your Software Collection's metapackage, add the scldevel subpackage by defining its name, summary, and description:. For example, in Red Hat Software Collections, the rubyscldevel subpackage cannot be installed when there is the rubyscldevel subpackage installed.


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Using an scldevel Subpackage in a Dependent Software Collection. To use your scldevel subpackage in a Software Collection that depends on a Software Collection ruby, update the metapackage of the dependent Software Collection as described below. Using your own scldevel subpackage in a dependent Software Collection Consider adding the following at the beginning of the metapackage's spec file:. These two lines are optional. They are only meant as a visual hint that the dependent Software Collection has been designed to depend on the ruby Software Collection.

If there is no other scldevel subpackage available in the build root, then the rubyscldevel subpackage is used as a build requirement. By specifying this build requirement, you ensure that the scldevel subpackage is in the build root and that the default values are not in use. Omitting this package could result in broken requires at the subsequent packages' build time.

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Extending the python27 and python33 Software Collections. This section describes extending the python27 and python33 Software Collections by creating a dependent Software Collection. In Red Hat Software Collections 1. The vt Software Collection. Below is a commented example of building a dependent Software Collection. The Software Collection is named vt and contains the versiontools Python package version 1. The vt Software Collection spec file has the following build dependency set:.

This expands to, for example, pythonscldevel. Note that these macros are defined at the top of the spec file.

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Although the definitions are not required, they provide a visual hint that the vt Software Collection has been designed to be built on top of the python27 Software Collection. They also serve as a fallback value. The vtbuild subpackage has the following dependency set:. The purpose of this dependency is to ensure that the macros are always present when building packages for the vt Software Collection.


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The enable scriptlet for the vt Software Collection uses the following line:. Note the dot at the beginning of the line. This line makes the Python Software Collection start implicitly when the vt Software Collection is started so that the user can only type scl enable vt command instead of scl enable python27 vt command to run command in the Software Collection environment. The macro file macros. The python-versiontools Package.

Below is a commented example of the python-versiontools package spec file. Note the following in the spec file:. Building the vt Software Collection. Install the pythonscldevel and pythonpython-devel subpackages that are part of Red Hat Software Collections. Build vt Install the pythonpython-setuptools package, which is a build requirement for versiontools.

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Testing the vt Software Collection. Install the vtpython-versiontools package. Extending the ruby and ruby Software Collections. The Ruby on Rails 4.

This section provides detailed information about the ror40 metapackage and the rorrubygem-bcrypt-ruby package, which are both part of the ror40 Software Collection. The ror40 Software Collection. This section contains a commented example of the Ruby on Rails 4. The ror40 Software Collection depends on the ror Software Collection. The ror40 Software Collection spec file has the following build dependencies set:. This expands to, for example, rubyscldevel and rubyrubygems-devel. The rubyscldevel subpackage should be available in the build root.

It specifies which of the available Ruby Software Collections you want to use. You can also replace it with the rubyscldevel subpackage. Although the definitions are not required, they provide a visual hint that the ror40 Software Collection has been designed to be built on top of the ruby Software Collection. The rorruntime subpackage must depend on the runtime subpackage of the Software Collection it depends on. This dependency is specified as follows:.

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This expands to rubyruntime in the case of the ruby Software Collection, and to rubyruntime in the case when the package is built against the ruby Software Collection. The rorbuild subpackage must depend on the scldevel subpackage of the Software Collection it depends on.