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# C/C++ rules for the `just` build system
A collection of rules for building C/C++ libraries and binaries.
## How to use this Repository
There are two ways to import this repository. You can generate your
`repos.json` from a template (`repos.template.json`) by importing
the `rules-cc` repository with the tool `just-import-git`
~~~sh
$ just-import-git -C repos.template.json --as rules-cc -b master https://github.com/just-buildsystem/rules-cc > repos.json
~~~
Importing this way will also pull in `protoc` and `grpc_cpp_plugin`
as a dependency for generating bindings for proto dependencies, if
this feature is used.
Alternatively, the `rules-cc` repository can be added manually to
your `repos.json`.
~~~jsonc
...
, "rules-cc":
{ "repository":
{ "type": "git"
, "branch": "master"
, "commit": "3a5f0f0f50c59495ffc3b198df59e6edb8416450"
, "repository": "https://github.com/just-buildsystem/rules-cc"
, "subdir": "rules"
}
}
...
~~~
Importing this way, `protoc` and `grpc_cpp_plugin` will be taken
from the host system. To change the binary names or to bring your
own proto toolchain, add a corresponding `target_root` layer (and
provide the needed binding, if your target files refer to other
repositories containing the toolchain).
## Consume and being consumed by CMake Libraries
For interoperability with CMake projects, see
- [consume CMake libraries](./doc/consume-cmake-libraries.md)
- [being consumed by CMake](./doc/being-consumed-by-cmake.md)
## Debug fission
The C/C++ rules have support for debug fission, which splits the debug symbols
of each compilation unit into separate artifacts, with several benefits in terms
of artifact caching, distribution, and build time.
For more details regarding this feature, see
[debug fission support](./doc/debug-fission.md).
## Rule Documentation
In this documentation, the standard configuration variables
`"AR"`, `"CC"`, `"CXX"`, `"CFLAGS"`, `"CXXFLAGS"`,`"LDFLAGS"`,
`"ADD_CFLAGS"`, `"ADD_CXXFLAGS"`, `"ADD_LDFLAGS"`, `"ENV"`,
`"BUILD_POSITION_INDEPENDENT"` are omitted.
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