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diffblue-cbmc/COMPILING.md

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WHAT ARCHITECTURE?

CPROVER now needs a C++11 compliant compiler and works in the following environments:

  • Linux
  • MacOS X
  • Solaris 11
  • FreeBSD 11
  • Cygwin
  • Microsoft Visual Studio

The rest of this document is split up into three parts: compilation on Linux, MacOS, Windows. Please read the section appropriate for your machine.

COMPILATION ON LINUX

We assume that you have a Debian/Ubuntu or Red Hat-like distribution.

  1. You need a C/C++ compiler, Flex and Bison, and GNU make. The GNU Make needs to be version 3.81 or higher. On Debian-like distributions, do as root:

    apt-get install g++ gcc flex bison make git libwww-perl patch

    On Red Hat/Fedora or derivates, do as root:

    dnf install gcc gcc-c++ flex bison perl-libwww-perl patch

    Note that you need g++ version 5.0 or newer.

    On Amazon Linux and similar distributions, do as root:

    yum install gcc72-c++ flex bison perl-libwww-perl patch tar

    To compile JBMC, you additionally need the JDK and Maven 3. You also need jq if you wish to run the entire test suite. On Debian-like distributions, do as root:

    apt-get install openjdk-8-jdk maven jq

    On Red Hat/Fedora or derivates, do as root:

    dnf install java-1.8.0-openjdk-devel maven jq

  2. As a user, get the CBMC source via

    git clone https://github.com/diffblue/cbmc cbmc-git
cd cbmc-git

  3. To compile, do

    make -C src minisat2-download
make -C src

    See doc/architectural/compilation-and-development.md for instructions on how to use a SAT solver other than MiniSat 2.

  4. To compile JBMC, do

    make -C jbmc/src setup-submodules
make -C jbmc/src

COMPILATION ON SOLARIS 11

We assume Solaris 11.4 or newer. To build JBMC, you'll need to install Maven 3 manually.

  1. As root, get the necessary development tools: 
    pkg install gcc-c++-7 bison flex
  2. As a user, get the CBMC source via 
    git clone https://github.com/diffblue/cbmc cbmc-git
cd cbmc-git
  3. To compile CBMC, type 
    gmake -C src minisat2-download DOWNLOADER=wget TAR=gtar
gmake -C src
  4. To compile JBMC, type 
    gmake -C jbmc/src setup-submodules
gmake -C jbmc/src

COMPILATION ON FREEBSD 11

  1. As root, get the necessary tools: 
    pkg install bash gmake git www/p5-libwww patch flex bison
    To compile JBMC, additionally install 
    pkg install openjdk8 wget maven3
  2. As a user, get the CBMC source via 
    git clone https://github.com/diffblue/cbmc cbmc-git
cd cbmc-git
  3. To compile CBMC, do 
    gmake -C src minisat2-download
gmake -C src
  4. To compile JBMC, do 
    gmake -C jbmc/src setup-submodules
gmake -C jbmc/src

COMPILATION ON MACOS X

Follow these instructions:

  1. You need a C/C++ compiler, Flex and Bison, and GNU make. To this end, first install the XCode from the App-store and then type 
    xcode-select --install
    in a terminal window.
  2. Then get the CBMC source via 
    git clone https://github.com/diffblue/cbmc cbmc-git
cd cbmc-git
  3. To compile CBMC, do 
    make -C src minisat2-download
make -C src
  4. To compile JBMC, you additionally need Maven 3, which has to be installed manually. Then do 
    make -C jbmc/src setup-submodules
make -C jbmc/src

COMPILATION ON WINDOWS

There are two options: the Visual Studio compiler with version 14 (2015) or later, or the MinGW cross compiler with version 5.4 or later. We recommend Visual Studio.

Follow these instructions:

  1. First install Cygwin, then from the Cygwin setup facility install the following packages: flex, bison, tar, gzip, git, make, wget, patch, libwww-perl.
  2. Get the CBMC source via 
    git clone https://github.com/diffblue/cbmc cbmc-git
cd cbmc-git
  3. Depending on your choice of compiler:
    1. To compile with Visual Studio, change the second line of src/config.inc to 
      BUILD_ENV = MSVC
      Open the Developer Command Prompt for Visual Studio, then start the Cygwin shell with 
      bash.exe -login
    2. To compile with MinGW, use Cygwin setup to install a mingw g++ compiler package, i.e. one of mingw{32,64}-{x86_64,i686}-gcc-g++. You may also have to adjust the section in src/common that defines CC and CXX for BUILD_ENV = Cygwin. Then start the Cygwin shell.
  4. To compile CMBC, open the Cygwin shell and type 
    make -C src DOWNLOADER=wget minisat2-download
make -C src
  5. To compile JBMC, you additionally need the JDK and Maven 3, which have to be installed manually. Then open the Cygwin shell and type 
    make -C jbmc/src setup-submodules
make -C jbmc/src

(Optional) A Visual Studio project file can be generated with the script "generate_vcxproj" that is in the subdirectory "scripts". The project file is helpful for GUI-based tasks, e.g., the class viewer, debugging, etc., and can be used for building with MSBuild. Note that you still need to run flex/bison using "make generated_files" before opening the project.

WORKING WITH CMAKE

There is also a build based on CMake instead of hand-written makefiles. It should work on a wider variety of systems than the standard makefile build, and can integrate better with IDEs and static-analysis tools. On Windows, the CMake build does not depend on Cygwin or MinGW, and doesn't require manual modification of build files.

  1. Ensure you have all the build dependencies installed. Build dependencies are the same as for the makefile build, but with the addition of CMake version 3.2 or higher. The installed CMake version can be queried with cmake --version. To install cmake:

    • On Debian-like distributions, do 
      apt-get install cmake
    • On Red Hat/Fedora or derivates, do 
      dnf install cmake
    • On macOS, do 
      xcode-select --install
      You shoud also install Homebrew, after which you can run brew install cmake to install CMake.
    • On platforms where installing the Java Development Kit and Maven is difficult, you can avoid needing these dependencies by not building JBMC. Just pass -DWITH_JBMC=OFF to cmake in step (4) below.
    • On Windows, ensure you have Visual Studio 2015 or later installed. Then, download CMake from the official download page. You'll also need git and patch, which are both provided by the git for Windows package. Finally, Windows builds of flex and bison should be installed from the sourceforge page. The easiest way to 'install' these executables is to unzip them and to drop the entire unzipped package into the CBMC source directory.
    • Use of CMake has not been tested on Solaris or FreeBSD. However, it should be possible to install CMake from the system package manager or the official download page on those systems. The dependencies (as listed in the relevant sections above) will also be required, and should be installed using the suggested methods.

  2. Navigate to the top level folder of the project. This is different from the Makefile build, which requires you to navigate to the src directory first.

  3. Update git submodules:

    git submodule update --init

  4. Generate build files with CMake:

    cmake -H. -Bbuild

    This command tells CMake to use the configuration in the current directory, and to generate build files into the build directory. This is the point to specify custom build settings, such as compilers and build back-ends. You can use clang (for example) by adding the argument -DCMAKE_CXX_COMPILER=clang++ to the command line. You can also tell CMake to generate IDE projects by supplying the -G flag. Run cmake -G for a comprehensive list of supported back-ends.

    Generally it is not necessary to manually specify individual compiler or linker flags, as CMake defines a number of "build modes" including Debug and Release modes. To build in a particular mode, add the flag -DCMAKE_BUILD_TYPE=Debug (or Release) to the initial invocation.

    If you do need to manually add flags, use -DCMAKE_CXX_FLAGS=... and -DCMAKE_EXE_LINKER_FLAGS=.... This is useful for enabling clang's sanitizers.

    Finally, to enable building universal binaries on macOS, you can pass the flag -DCMAKE_OSX_ARCHITECTURES=i386;x86_64. If you don't supply this flag, the build will just be for the architecture of your machine.

  5. Run the build:

    cmake --build build

    This command tells CMake to invoke the correct tool to run the build in the build directory. You can also use the build back-end directly by invoking make, ninja, or opening the generated IDE project as appropriate.

WORKING WITH ECLIPSE

To work with Eclipse, do the following:

  1. Select File -> New -> Makefile Project with Existing Code
  2. Type "cprover" as "Project Name"
  3. Select the "src" subdirectory as "Existing Code Location"
  4. Select a toolchain appropriate for your platform
  5. Click "Finish"
  6. Select Project -> Build All

OPTIONS AND VARIABLES

Compiling with CUDD

Cudd is a BDD library which can be used instead of the builtin miniBDD implementation.

If compiling with make:

  1. Download and compile Cudd: 
    make -C src cudd-download
  2. Uncomment the definition of CUDD in the file src/config.inc.
  3. Compile with make -C src

If compiling with cmake:

  1. Add the -DCMAKE_USE_CUDD=true flag to the cmake configuration phase. For instance: 
    cmake -H. -Bbuild -DCMAKE_USE_CUDD=true
  2. Run the build: 
    cmake --build build

Use BDDs for guards

There are two implementation for symex guards. The default one uses the internal representation of expression. The other one uses BDDs and though experimental, it is expected to have better performance, in particular when used in conjunction with CUDD.

To use the BDD implementation of guards, add the BDD_GUARDS compilation flag:

  • If compiling with make: 
    make -C src CXXFLAGS="-O2 -DBDD_GUARDS"
  • If compiling with CMake: 
    cmake -H. -Bbuild -DCMAKE_CXX_FLAGS="-DBDD_GUARDS"
    and then cmake --build build