kframework / k-legacy

The K tools (deprecated, see README)
http://kframework.org
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WARNING: https://github.com/kframework/k will be undergoing a force push on June 15, 2018, at which time it will be replaced with the contents of https://github.com/kframework/k5, which will be transferring ownership into this repository. Users who wish to upgrade to the new K 5.0 now can change their git config to https://github.com/kframework/k5 now, and users who wish to continue using the existing kframework/k can stop breakages now by changing their git config to https://github.com/kframework/k-legacy.

Codeship Status for kframework/k Join the chat at https://gitter.im/kframework/k

This is a readme file for the developers.

Prerequisites

Java Development Kit (required JDK8 version 8u45 or higher)

You can download the JDK at http://www.oracle.com/technetwork/java/javase/downloads/index.html

To make sure that everything works you should be able to call java -version and javac -version from a Terminal.

Apache Maven

Linux:

Mac:

Windows:

Maven usually requires setting an environment variable JAVA_HOME pointing to the installation directory of the JDK (not to be mistaken with JRE).

You can test if it works by calling mvn -version in a Terminal. This will provide the information about the JDK Maven is using, in case it is the wrong one.

Git - command line

Having a GUI client is not enough. Most distributions have an installation option to make git accessible in the command line too.

Install

Checkout this directory in your desired location and call mvn package from the main directory to build the distribution. For convenient usage, you can update your $PATH with <checkout-dir>k-distribution/target/release/k/bin (strongly recommended, but optional).

You are also encouraged to set the environment variable MAVEN_OPTS to -XX:+TieredCompilation, which will significantly speed up the incremental build process.

IDE Setup

First build K and set up the environment variables as explained above.

Additionally, in order for K to run correctly in an IDE, it is necessary that the correct environment variables be set. You need to replace <release> with a path to k-distribution/target/release/k in your source tree.

Mac OS X: PATH=$PATH:<release>/lib/native/osx DYLD_LIBRARY_PATH=$DYLD_LIBRARY_PATH:<release>/lib/native/osx

Windows x86: PATH=$PATH;<release>\lib\native\windows;<release>\lib\native\windows32

Windows x64: PATH=$PATH;<release>\lib\native\windows;<release>\lib\native\windows64

Linux i386: PATH=$PATH:<release>/lib/native/linux:<release>/lib/native/linux32 LD_LIBRARY_PATH=$LD_LIBRARY_PATH:<release>/lib/native/linux32

Linux amd64: PATH=$PATH:<release>/lib/native/linux:<release>/lib/native/linux64 LD_LIBRARY_PATH=$LD_LIBRARY_PATH:<release>/lib/native/linux64

IntelliJ IDEA

Import project (<checkout-dir>, the top k directory) from external model Maven (see IntelliJ IDEA wiki for more info).

If you intend to contribute code to the k repository, then make sure you work with the existing styles configuration file (.idea/codeStyleSettings.xml); if your IntelliJ import deletes or modifies it, then check it out again.

When editing your IntelliJ configurations, we recommend that you use classpath of module k-distribution.

Eclipse

N.B. the Eclipse internal compiler may generate false compilation errors (there are bugs in its support of Scala mixed compilation). We recommend using IntelliJ IDEA if at all possible.

To autogenerate an Eclipse project for K, run mvn install -DskipKTest; mvn eclipse:eclipse on the command line, and then go into the kore directory and run sbt eclipse. Then start eclipse and go to File->Import->General->Existing projects into workspace, and select the directory of the installation. You should only add the leaves to the workspace, because eclipse does not support hierarchical projects.

Run test suite

To completely test the current version of the K framework, run mvn verify. This normally takes roughly 30 minutes on a fast machine. If you are interested only in running the unit tests and checkstyle goals, run mvn verify -DskipKTest to skip the lengthy ktest execution.

Changing the KORE data structures

If you need to change the KORE data structures (unless you are a K core developer, you probably do not), see KORE data structures guide.

Build the final release directory/archives

Call mvn install in the base directory. This will attach an artifact to the local maven repository containing a zip and tar.gz of the distribution.

The functionality to create a tagged release is currently incomplete.

Compiling definitions and running programs

Assuming k-distribution/target/release/k/bin is in your path, you can compile definitions using the kompile command. To execute a program you can use krun.

For running either program in the debugger, use the main class org.kframework.main.Main with an additional argument -kompile or -krun added before other command line arguments, and use the classpath from the k-distribution module.

Cross platform compilation

To build a version of the K framework for a platform other than the current version, you can specify the OS and architecture using profiles. For example, to build a 32-bit windows release of the K framework, run mvn install -P windows -P x86 -DskipTests -DskipKTest.

To view the platform being used by a particular build, run the mvn help:active-profiles target.

Troubleshooting

Common error messages:

If something unexpected happens and the project fails to build, try mvn clean and rebuild the entire project. Generally speaking, however, the project should build incrementally without needing to be cleaned first.

If you are doing work with snapshot dependencies, you can update them to the latest version by running maven with the -U flag.

If you are configuring artifacts in a repository and need to purge the local repository's cache of artifacts, you can run mvn dependency:purge-local-repository.

If tests fail but you want to run the build anyway to see what happens, you can use mvn package -DskipTests.

If you still cannot build, please contact a K developer.

Acknowledgements

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