Local-sources mode¶

备注

Clean events (such as releng-tool clean) will not touch packages using sources found alongside the output directory

Local-sources mode provides a way for a developer to build internal-flagged packages using sources found alongside the root directory (or a specific provided directory), instead of having releng-tool attempt to fetch them from remote instances. This is primarily for developers who desire to manually manage source content outside the releng-tool environment. Local-sources mode only works for internally flagged packaged. Consider the following example: a releng-tool project has a package called liba. When releng-tool is invoked in normal configurations, the package will do fetching, extraction and patching to prepare the directory <root>/output/build/liba-<version>. However, if a builder has configured the working root for local-sources mode, sources for liba will be used from the folder <root>/../liba instead:

├── liba/
│   └── ...
└── my-releng-tool-project/
    ├── package/
    │   └── liba/
    │       └── ...
    ├── LICENSE
    ├── README.md
    └── releng-tool.rt

When in local-sources mode, an internal package will skip the fetching, extraction and patching stages in order to prevent undesired manipulation of developer-prepared sources. Another consideration to note is the use of clean operators while in local-sources mode. Continuing with the above example, if a user invokes releng-tool liba-clean, the operation will not remove the <root>/../liba folder. Responsibility to managing a clean liba package will be left with the user.

To enable local-sources mode, invoking releng-tool with the --local-sources (or -L) argument will enable the mode. Future calls to releng-tool for the project will use local sources for packages defined as internal packages. For example:

$ releng-tool --local-sources
(*) <parent>
(success) configured root for local-sources mode
$ releng-tool
~building against local sources~
...

Local-sources mode is persisted through the use of a file flag in the root directory.

If a user provides a directory for the --local-sources argument, packages will be looked for in the provided folder instead of the parent of the configured root directory. For example:

$ releng-tool --local-sources ~/workdir2
(*) ~/workdir2
(success) configured root for local-sources mode
$ releng-tool
~building against local sources~
...

In the above example, if a project had an internal package liba, sources for liba will be used from the folder ~/workdir2/liba:

├── workdir/
│   └── my-releng-tool-project/
│       ├── package/
│       │   └── liba/
│       │       └── ...
│       ├── LICENSE
│       ├── README.md
│       └── releng-tool.rt
└── workdir2/
    └── liba/
        └── ...

Users can also provide package-specific overrides. If a user provides a path which is prefixed with a package's name with either a colon (:) or at sign (@), the sources for the provided package will be used from the respective folder:

$ releng-tool -L ~/workdir2
$ releng-tool -L libb:/mnt/sources/libb
$ releng-tool -L libc:
(*) ~/workdir2
(libb) /mnt/sources/libb
(libc) <unset>
(success) configured root for local-sources mode
$ releng-tool
~building against local sources~
...

In the above example, if a project had internal packages liba, libb and libc, the following paths will be used:

/
├── home/
│   └── <user>/
│       ├── workdir/
│       │   └── my-releng-tool-project/
│       │       ├── package/
│       │       │   └── liba/
│       │       │       └── ...
│       │       │   └── libb/
│       │       │       └── ...
│       │       │   └── libc/
│       │       │       └── ...
│       │       ├── LICENSE
│       │       ├── README.md
│       │       └── releng-tool.rt
│       └── workdir2/
│           └── liba/
│               └── ...
└── mnt/
    ├── sources/
    │   └── libb/
    │       └── ...
    ...

Sources for liba will be used from the folder ~/workdir2/liba,
Sources for libb will be used from the folder /mnt/sources/libb; and,
Sources for libc will not be fetched locally.

A user can either disable local sources mode by:

Providing a local-source path of - or unset;
Invoking mrproper; or,
By manually removing the file flag found at the root of the project.