cudd

CUDD

The CUDD package is a package written in C for the manipulation of decision diagrams. It supports binary decision diagrams (BDDs), algebraic decision diagrams (ADDs), and Zero-Suppressed BDDs (ZDDs).

This directory contains a set of packages that allow you to build a test application based on the CUDD package.

The test application provided in this kit is called nanotrav and is a simple-minded FSM traversal program. (See the README file and the man page nanotrav.1 in the nanotrav directory for the details.) It is included so that you can run a sanity check on your installation.

Also included in this distribution are the dddmp libray by Giampiero Cabodi and Stefano Quer and a C++ object-oriented wrapper for CUDD.

Note: This is a copy of the CUDD source code, hosted due to CUDD's parent site experiencing issues. I do not own this library - I'm just a maintenance monkey. All copyrights belong to the real authors.

Build and installation

In the simplest form, you can build the static libraries with:

./configure
make
make check

The configure script provides a few options, which can be listed with

./configure --help

Notable options include

--enable-silent-rules
--enable-shared
--enable-dddmp
--enable-obj
--with-system-qsort

The --enable-silent-rules option is a standard option that streamlines the messages produced by the build process. The remaining options are specific to CUDD.

The three "enable" options control the build of shared libraries. By default, only static libraries are built. With --enable-shared, a shared library for libcudd is built. Before installation, it can be found in cudd/.libs.

The last two "enable" options control the inclusion of the dddmp library and C++ wrapper in the shared library, which by default only contains the core CUDD library.

The --with-system-qsort option requests use of the qsort from the standard library instead of the portable one shipped with CUDD. This option is provided for backward compatibility and is not otherwise recommended. Some of the tests of make check may fail with the system qsort because variable orders may be generated that are different from the reference ones.

As an example, a more elaborate build command sequence may be:

./configure CC=clang CXX=clang++ --enable-silent-rules \
  --enable-shared --enable-obj
make -j4 check
make install

which selects alternate compilers instead of gcc and g++, causes the C++ wrapper to be included in the shared library, enables parallel compilation (with -j4) and finally installs the shared library using the default prefix /usr/local.

For those unfamiliar with libtool it may be worth noting that the libraries it builds go in .libs subdirectories. One should also note that with shared libraries enabled, the test programs immediately visible to the user are shell scripts that make sure dynamic linking works before installation. If you want to run valgrind on, say, a dynamically linked nanotrav, specify the option --trace-children=yes.

Platforms

This kit has been successfully built on the following configurations:

• x86 and x86_64 running Ubuntu with GCC and Clang
• x86 and x86_64 running RHEL with GCC
• x86_64 running 32-bit Cygwin on Windows 7 and Vista with GCC
• x86_64 running 64-bit Cygwin on Windows 8.1 with GCC
• x86_64 running MinGW-w64 on Windows 8.1 with GCC

In all these cases, the C++ wrapper was compiled with the matching C++ compiler (g++ for GCC and clang++ for Clang). To compile under MSYS2 (MinGW-w64) one has to pass --build=x86_64-w64-mingw32 to ./configure.

Sanity check

The directory nanotrav contains a simple application based on the CUDD package. The nanotrav directory contains a man page that describes the options nanotrav supports. The files *.blif are sample input files for nanotrav. The *.out files are the reference output files.

Documentation

If Doxygen is installed, running make puts HTML documentation for the CUDD package in the cudd-3.0.0/cudd/html directory. The recommended starting point is index.html. The user's manual in PDF format is built in cudd-3.0.0/doc if PDFLaTeX and MakeIndex are installed. Documentation for the dddmp library is in the dddmp/doc subdirectory.

Feedback

Send feedback to:

Fabio Somenzi University of Colorado at Boulder ECE Dept. Boulder, CO 80309-0425 Fabio@Colorado.EDU http://vlsi.colorado.edu/~fabio