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System Requirements and Installation

In principle SMACK can be run on any platform on which LLVM and Boogie can run. In practice we have run SMACK on standard Ubuntu and openSUSE Linux distributions, OS X, and Windows via Cygwin. Below we outline system requirements and installation instructions for typical system configurations. A quick way to get started without worrying about system requirements and installation, however, is to launch our reproducible and portable development environment using Vagrant. An even quicker way to get started is to use our prepackaged Vagrant box.

Super-Quick Setup: Virtual Smack

Just download vsmack and put it in your executable path, ensure Vagrant and VirtualBox are installed, and run vsmack directly on your source files. For example,

# fetch vsmack and set executable permission
wget -O ~/bin/vsmack https://raw.githubusercontent.com/smackers/smack/develop/bin/vsmack
chmod u+x ~/bin/vsmack

# fetch a source file
wget https://raw.githubusercontent.com/smackers/smack/develop/test/basic/simple.c

# run vsmack
vsmack simple.c

Quick Setup 1: Vagrant Development Environment

SMACK can be run in a preconfigured virtual environment using Vagrant and VirtualBox. Both are available for a wide range of systems, with great installation support. The following versions are required:

Once both are properly installed, launch Vagrant by running the following command in SMACK's root directory (that which contains Vagrantfile):

vagrant up

This can take a few minutes the first time around, since it includes the download of a virtual machine image and the installation of several other packages. When this step finishes, our virtual machine should be up and running; verify this with the vagrant status command. Then open a shell to the running virtual machine via SSH:

vagrant ssh

and proceed to using SMACK. When finished, simply close the SSH session, and halt, suspend, or destroy the virtual machine:

vagrant destroy

Quick Setup 2: Docker

SMACK can also be run in a Docker container. We tested the Dockerfile on the following configurations:

  • Ubuntu 16.04, docker-ce version 18.09.7
  • OS X 10.14.5, Docker Desktop with Docker engine version 18.09.2
  • Windows 10, Docker Desktop with Docker engine version 18.09.2

Once Docker is successfully installed, build the Docker image by running the following command in SMACK's root directory that contains Dockerfile:

docker build . -t smack

After the image is successfully built, invoke a Docker container by running the following command:

docker run -it smack

For more advanced usages of Docker (e.g., to mount host directories), please refer to Docker's official documentation.

General System Requirements

SMACK depends on the following projects:

  • LLVM version 8.0.1
  • Clang version 8.0.1
  • Python version 2.7 or greater
  • Ninja version 1.5.1 or greater
  • Mono version 5.0.0 or greater (except on Windows)
  • Z3 or compatible SMT-format theorem prover
  • Boogie or Corral or compatible Boogie-format verifier

See here for compatible version numbers of Boogie and Corral. See the appropriate installation instructions below for installing these requirements.

Installation on Linux

Some distributions of Linux may have various SMACK dependencies like Python installed out of the box. Nevertheless it is important to ensure that the required version numbers, as indicated above, are installed and selected for use. Generally speaking, apart from Z3, Boogie, and Corral, these dependencies can be installed via the system's default package manager, such as apt-get, rpm, or yast. In some cases, it may be necessary to specify alternate package repositories for the system's default package manager, or to subvert the package manager altogether, and download, compile, and install the required project manually. The Z3, Boogie, and Corral projects are generally not indexed by Linux package managers, and must be installed manually.

To facilitate the installation of SMACK and its requirements, we provide an automated build.sh script in bin/build.sh. Running this script on a fresh installation of Ubuntu or openSUSE Linux should actually result in the full installation of SMACK and its requirements, apart from setting the required environment variables in your shell's .profile. However, we do not expect this script to work out of the box on all configurations. Instead, it can be used as reference guidelines for manual installation.

NOTE A common omission is to forget to set the required environment variables after the installation process, as indicated in the end of the build script. Alternatively, you can read how to accomplish this below.

Installation on OS X

The general instructions for installation on OS X mainly follow those above for Linux, and are outlined in our automated build.sh script in bin/build.sh. Note however that bin/build.sh does not run on OS X . it can only be used as reference guidelines.

In addition to the requirements above, installing SMACK and its dependencies requires the Command Line Tools for Xcode. Generally speaking, apart from Mono, Z3, Boogie, and Corral, dependencies can be installed via the Homebrew package manager. Mono can be installed from binaries either from the Mono download page, or via Homebrew Cask.

Installation on Windows

Cygwin (Deprecated)

The general instructions for installation on Windows using Cygwin mainly follow those above for Linux, and are outlined in our automated build.sh script in bin/build.sh. Note however that an actual .NET Framework and SDK should be present in place of the Mono emulator, and that prebuilt Z3, Boogie, and Corral may be installed via their Windows installers rather than built from source.

NOTE Although we have not pinpointed the problem exactly, building LLVM and Clang is problematic on some Cygwin configurations. Please consult LLVM documentation in case of any issues.

Windows Subsystem for Linux (Recommended)

SMACK can be installed on the Windows Subsystem for Linux (WSL) by following the same procedure as the Linux installation (i.e., via the build script build.sh). We tested the WSL installation on Windows 10 (Build 18362) with Ubuntu 16.04 installed via the Microsoft Store.

Installing SMACK Itself

SMACK is built using CMake via the following sequence of shell commands from SMACK's root directory:

mkdir build
cd build
cmake -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ -DCMAKE_BUILD_TYPE=Debug .. -G Ninja
ninja install

Note that the llvm-config binary must be in your executable PATH. To specify an install location PREFIX other than the default installation prefix, add the additional flag:

-DCMAKE_INSTALL_PREFIX=PREFIX

substituting the string PREFIX for the desired location.

Actually running SMACK relies on the environment variables BOOGIE and CORRAL targeting the Boogie.exe and corral.exe executables, for instance residing in paths prefixed by XXX and YYY:

export BOOGIE="mono /XXX/Boogie/Binaries/Boogie.exe"
export CORRAL="mono /YYY/Corral/bin/Release/corral.exe"

Source the preceding lines in your shell's .profile, and ensure they invoke Boogie/Corral correctly. For example, running

BOOGIE

should result in

*** Error: No input files were specified.

printed to standard output.

Finally, note that the following LLVM and Clang binaries must be in your executable path: clang, llvm-config, llvm-link.

Verifying the SMACK Installation

To ensure SMACK has been installed properly, run the regression tests from the shell in the test directory by executing

./regtest.py