scala_macro_library.md

scala_macro_library

scala_macro_library(
    name,
    srcs,
    deps,
    runtime_deps,
    exports,
    data,
    main_class,
    resources,
    resource_strip_prefix,
    scalacopts,
    jvm_flags,
    scalac_jvm_flags,
    javac_jvm_flags,
    unused_dependency_checker_mode
)

scala_macro_library generates a .jar file from .scala source files when they contain macros. For macros, there are no interface jars because the macro code is executed at compile time. For best performance, aim for granular (smaller) targets to take advantage of Bazel caching as much as possible.

In order to have a Java rule use this jar file, use the java_import rule.

Attributes
name	Name, required A unique name for this target
srcs	List of labels, required List of Scala .scala source files used to build the library. These may be .srcjar jar files that contain source code.
deps	List of labels, optional List of other libraries to linked to this library target. These must be jvm targets (scala_library, java_library, java_import, etc...)
runtime_deps	List of labels, optional List of other libraries to put on the classpath only at runtime. This is rarely needed in Scala. These must be jvm targets (scala_library, java_library, java_import, etc...)
exports	List of labels, optional List of targets to add to the dependencies of those that depend on this target. Similar to the `java_library` parameter of the same name. Use this sparingly as it weakens the precision of the build graph. These must be jvm targets (scala_library, java_library, java_import, etc...)
data	List of labels, optional List of files needed by this rule at runtime.
main_class	String, optional Name of class with main() method to use as an entry point The value of this attribute is a class name, not a source file. The class must be available at runtime: it may be compiled by this rule (from srcs) or provided by direct or transitive dependencies (through deps). If the class is unavailable, the binary will fail at runtime; there is no build-time check.
resources	List of labels; optional A list of data files to be included in the JAR.
resource_strip_prefix	String; optional The path prefix to strip from Java resources. If specified, this path prefix is stripped from every file in the `resources` attribute. It is an error for a resource file not to be under this directory.
scalacopts	List of strings; optional Extra compiler options for this library to be passed to scalac. Subject to Make variable substitution and Bourne shell tokenization.
jvm_flags	List of strings; optional; deprecated Deprecated, superseded by scalac_jvm_flags and javac_jvm_flags. Is not used and is kept as backwards compatibility for the near future. Effectively jvm_flags is now an executable target attribute only.
scalac_jvm_flags	List of strings; optional List of JVM flags to be passed to scalac after the scalacopts. Subject to Make variable substitution and Bourne shell tokenization.
javac_jvm_flags	List of strings; optional List of JVM flags to be passed to javac after the javacopts. Subject to Make variable substitution and Bourne shell tokenization.
unused_dependency_checker_mode	String; optional Enable unused dependency checking (see Unused dependency checking). Possible values are: off, warn and error.