Scalac (1) Linux Manual Page

NAME

scalac – Compiler for the Scala 2 language

SYNOPSIS

scalac [ <options> ] <source files>

PARAMETERS

<options>: Command line options. See OPTIONS below.
<source files>: One or more source files to be compiled (such as MyClass.scala).

DESCRIPTION

The scalac tool reads class and object definitions, written in the Scala programming language, and compiles them into bytecode class files.

By default, the compiler puts each class file in the same directory as its source file. You can specify a separate destination directory with -d (see OPTIONS, below).

OPTIONS

The compiler has a set of standard options that are supported on the current development environment and will be supported in future releases. An additional set of non-standard options are specific to the current virtual machine implementation and are subject to change in the future. Non-standard options begin with -X.

Standard Options

-Dproperty=value: Pass -Dproperty=value directly to the runtime system.
-J<flag>: Pass <flag> directly to the runtime system.
-P:<plugin:opt>: Pass an option to a plugin
-X: Print a synopsis of advanced options.
-bootclasspath <path>: Override location of bootstrap class files (where to find the standard built-in classes, such as "scala.List").
-classpath <path>: Specify where to find user class files (on Unix-based systems a colon-separated list of paths, on Windows-based systems, a semicolon-separate list of paths). This does not override the built-in ("boot") search path.
: The default class path is the current directory. Setting the CLASSPATH variable or using the -classpath command-line option overrides that default, so if you want to include the current directory in the search path, you must include "." in the new settings.

-d <directory|jar>: Specify where to place generated class files.
-deprecation: Emit warning and location for usages of deprecated APIs.
: Available since Scala version 2.2.1

-encoding <encoding>: Specify character encoding used by source files.
: The default value is platform-specific (Linux: "UTF8", Windows: "Cp1252"). Executing the following code in the Scala interpreter will return the default value on your system:
: scala> new java.io.InputStreamReader(System.in).getEncoding

-explaintypes: Explain type errors in more detail.
-extdirs <dirs>: Override location of installed extensions.
-g:{none,source,line,vars,notailcalls}: "none" generates no debugging info,
: "source" generates only the source file attribute,
: "line" generates source and line number information,
: "vars" generates source, line number and local variable information,
: "notailcalls" generates all of the above and will not perform tail call optimization.

-help: Print a synopsis of standard options.
-javabootclasspath <path>: Override Java boot classpath.
-javaextdirs <path>: Override Java extdirs classpath.
-no-specialization: Ignore @specialize annotations.
-nobootcp: Do not use the boot classpath for the Scala jar files.
-nowarn: Generate no warnings
-optimise: Generates faster bytecode by applying optimisations to the program.
-print: Print program with all Scala-specific features removed.
-sourcepath <path>: Specify location(s) of source files.
-target:<target>: Specify which backend to use (jvm-1.5,msil).
: The default value is "jvm-1.5" (was "jvm-1.4" up to Scala version 2.6.1).

-toolcp <path>: Add to the runner classpath.
-unchecked: Enable detailed unchecked (erasure) warnings
: Non variable type-arguments in type patterns are unchecked since they are eliminated by erasure
: Available since Scala version 2.3.0

-uniqid: Uniquely tag all identifiers in debugging output.
-verbose: Output messages about what the compiler is doing
-version: Print product version and exit.
@<file>: A text file containing compiler arguments (options and source files)

Advanced Options

-Xassem-extdirs <dirs>: (Requires -target:msil) List of directories containing assemblies. default:lib.
-Xassem-name <file>: (Requires -target:msil) Name of the output assembly.
-Xassem-path <path>: (Requires -target:msil) List of assemblies referenced by the program.
-Xcheck-null: Warn upon selection of nullable reference
-Xcheckinit: Wrap field accessors to throw an exception on uninitialized access.
-Xdisable-assertions: Generate no assertions and assumptions
-Xelide-below <n>: Calls to @elidable methods are omitted if method priority is lower than argument.
-Xexperimental: Enable experimental extensions
-Xfatal-warnings: Fail the compilation if there are any warnings.
-Xfuture: Turn on future language features.
-Xgenerate-phase-graph <file>: Generate the phase graphs (outputs .dot files) to fileX.dot.
-Xlint: Enable recommended additional warnings.
-Xlog-implicits: Show more detail on why some implicits are not applicable.
-Xmax-classfile-name <n>: Maximum filename length for generated classes.
-Xmigration: Warn about constructs whose behavior may have changed between 2.7 and 2.8.
-Xno-forwarders: Do not generate static forwarders in mirror classes.
-Xno-uescape: Disable handling of

scalac (1) Linux Manual Page