Vicare Scheme
Active development of this project is currently on hiatus. The maintainer might accept contributions, but he is not currently working of further development.
Introduction
Scheme is a statically scoped and properly tail-recursive dialect of the Lisp programming language invented by Guy Lewis Steele Jr. and Gerald Jay Sussman. It was designed to have an exceptionally clear and simple semantics and few different ways to form expressions.
The "Revised^6 Report on the Algorithmic Language Scheme" gives a defining description of the programming language Scheme. The report is the work of many people in the course of many years; revision 6 was edited by Michael Sperber, R. Kent Dybvig, Matthew Flatt and Anton Van Straaten.
Ikarus Scheme is an almost R6RS compliant implementation of the Scheme programming language; it is the creation of Abdulaziz Ghuloum, which retired from development in 2010. Vicare Scheme is an R6RS compliant fork of Ikarus Scheme, aiming to become a native compiler for R6 Scheme producing single threaded programs running on Intel x86 32-bit and 64-bit processors. It is tested only on GNU+Linux; it should work on POSIX platforms, but not on Cygwin.
"Vicare" is pronounced the etruscan way.
Vicare offers arbitrary precision integers through GMP. It implements an optionally included foreign-functions interface based on Libffi. The last time the maintainer updated this paragraph, it had tested Libffi version 3.2.1.
A port to R6RS of the SRFI libraries is included in the distribution.
License
Copyright (c) 2011-2017 Marco Maggi [email protected]
Copyright (c) 2006-2010 Abdulaziz Ghuloum [email protected]
Modified by the Vicare contributors.
This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.
Install
Install Vicare
See the INSTALL file for installation instructions for generic
packages using the GNU Autotools. To install Vicare Scheme from a
proper release tarball, we must unpack the archive then do:
$ cd vicare-scheme-0.4.0
$ ./configure
$ make
$ make install
To run the test suite we do:
$ make check
The Makefile is designed to allow parallel builds, so we can do:
$ make -j4 all && make -j4 check
which, on a 4-core CPU, should speed up building and checking significantly.
By default only compiled Scheme libraries are installed; to install also the source libraries we must configure with:
$ ./configure --enable-sources-installation ...
If, instead, we have checked out a revision from the repository, we will have to first build the infrastructure by running a Bourne shell script from the top source directory:
$ cd vicare-scheme
$ sh autogen.sh
notice that autogen.sh will run the programs autoreconf and
libtoolize; the latter is selected through the environment variable
LIBTOOLIZE, whose value can be customised; for example to run
glibtoolize rather than libtoolize we do:
$ LIBTOOLIZE=glibtoolize sh autogen.sh
GNU Libtool is not directly needed by Vicare Scheme, but it is needed to correctly link libraries (like GNU Libiconv) which make use of it.
After this the procedure is the same as the one for building from a
proper release tarball, but we must enable maintainer mode when running
the configure script:
$ ./configure --enable-maintainer-mode
$ make
$ make install
again to run the test suite we do:
$ make check
To make use of the POSIX semaphore functions, we need to include the pthread library using the option:
$ ./configure --with-pthread [... other options ...]
by default pthread is linked to the executable if found on the host.
A bare build (without support for optional features and external libraries) can be obtained with:
$ ./configure \
--disable-posix \
--disable-glibc \
--disable-linux \
--without-pthread \
--without-libffi \
--without-libiconv \
--without-readline
To test what a rule will do use the "-n" option; example:
$ make install -n
The Makefile supports the DESTDIR environment variable to install
the files under a temporary location; example:
$ make install DESTDIR=/tmp/vicare
By default, the Scheme libraries are installed under the directory:
$(libdir)/vicare-scheme
we should arrange the package configuration to install 32-bit binary libraries under:
$(prefix)/lib/vicare-scheme
and 64-bit binary libraries under:
$(prefix)/lib64/vicare-scheme
by configuring, for example, with:
$ ./configure --libdir=/usr/local/lib64 ...
The variable VFLAGS is available to the user when running configure
and make to add command line options to the execution of vicare when
compiling libraries and running tests; for example:
$ make VFLAGS="-g -O2 --print-loaded-libraries"
Special make rules
There are special makefile rules to rebuild source code files, mostly lexer and parser tables:
- ip-address-tables - rebuild the tables for the net libraries
- silex-test - rebuild the tests for the SILex lexer
- lalr-test - rebuild the tests for the LALR parser
and the following DANGEROUS rule, use only if you know what you are doing:
- silex-internals - rebuild the internal tables of SILex itself
Testing
Test files are located in the tests directory; the files with
extension .sps are Scheme programs. They are partitioned in two
families: the files whose name start with long-test need some time to
be executed by a powerless computer; the files whose name start with
test can be run in reasonable time on any system. The files whose
name contains r6rs are R6RS compliance tests by Matthew Flatt.
The command make check will run all the tests, quick and long; the
commands make test and make tests run the same set of "quick" tests;
the commands make long-test and make long-tests run the same set of
time-consuming tests. The check rule uses the GNU Automake
infrastructure (parallel test harness, see Automake's documentation for
details). After package installation: we can run the tests using the
make installcheck rule which will load the installed libraries.
It is possible to select a single test file by using the file
variable on the command line of make; for example:
$ make test file=equal-hash
will run the program test-issue-001-equal-hash.sps. The file
variable is used to expand a file name with wildcards as in
test-*$(file)*.sps.
It is possible to run vicare from the build directory with user
selected command line arguments doing:
$ make test-run VFLAGS='...'
where the contents of the VFLAGS variable are placed directly on the
command line.
Some test files need a usable directory pathname in the TMPDIR
environment variable.
The test files acting on networking sockets expect localhost to
resolve to the IPv4 address 127.0.0.1, which is usually the case.
The file test-vicare-posix-sockets.sps contains tests for network
sockets which are normally disabled because the firewall rules on the
hosting machine must allow TCP and UDP connections on 127.0.0.1:8080 and
127.0.0.1:8081; to enable these tests run make with the environment
variable RUN_INET_TESTS set to something:
$ make test file=vicare-posix-sockets RUN_INET_TESTS=1
Usage
Read the documentation.
Credits
The original Ikarus Scheme code is the work of Abdulaziz Ghuloum.
Vicare Scheme is a fork driven by Marco Maggi. See the CONTRIBUTORS
file for the list of contributors to Ikarus Scheme and Vicare Scheme.
IrRegex is adapted from the original distribution by Alex Shinn, see the
file LICENSE.irregex.
Pregexp is adapted from the original library by Dorai Sitaram, see the
file LICENSE.pregexp.
The libraries in the hierarchy (vicare containers strings ---) are
derived from the reference implementation of SRFI 13 by Olin Shivers.
The libraries in the hierarchy (vicare containers vectors ---) are
derived from the reference implementation of SRFI 13 by Olin Shivers.
The library (vicare containers knuth-morris-pratt) is derived from the
reference implementation of SRFI 13 by Olin Shivers.
The library (vicare containers strings rabin-karp) is derived from the
implementation at:
<http://algs4.cs.princeton.edu/53substring/RabinKarp.java.html>
The library (vicare containers levenshtein) is derived from code by
Neil Van Dyke.
The library (vicare language-extensions streams) is derived from code
by Philip L. Bewig.
The library (vicare language-extensions loops) is derived from code by
Sebastian Egner.
The library (vicare language-extensions comparisons) is derived from
code by Sebastian Egner and Jens Axel Soegaard.
The libraries in the hierarchy (vicare crypto randomisations ---) have
many authors, please see the headers of the individual files.
Some libraries in the hierarchy (vicare containers bytevectors ---)
are derived from the SRFI 13 reference implementation by Olin Shivers.
The library (vicare formations) is derived from: format.scm Common
LISP text output formatter for SLIB. Written 1992-1994 by Dirk
Lutzebaeck. Authors of the original version (<1.4) were Ken Dickey and
Aubrey Jaffer. Assimilated into Guile May 1999. Ported to R6RS Scheme
and Vicare by Marco Maggi.
The SILex libraries are a port to R6RS Scheme of SILex version 1.0 by Danny DubΓ©. Copyright (C) 2001, 2009 Danny DubΓ©.
The LALR libraries are a port to R6RS Scheme of Lalr-scm by Dominique Boucher. Copyright (c) 2005-2008 Dominique Boucher.
Bugs, vulnerabilities and contributions
Bug and vulnerability reports are appreciated, all the vulnerability reports are public; register them using the Issue Tracker at the project's GitHub site. For contributions and patches please use the Pull Requests feature at the project's GitHub site.
Resources
The latest version of this package can be downloaded from:
https://bitbucket.org/marcomaggi/vicare-scheme/downloads
the home page of the Vicare project is at:
http://marcomaggi.github.io/vicare.html
development takes place at:
http://github.com/marcomaggi/vicare/
and as backup at:
https://bitbucket.org/marcomaggi/vicare-scheme/
The library Libffi can be found at:
The GMP library is available at:
The home page of the R6RS standard is at:
Badges and static analysis
Travis CI
Travis CI is a hosted, distributed continuous integration service used to build and test software projects hosted at GitHub. We can find this project's dashboard at:
https://travis-ci.org/marcomaggi/vicare
Usage of this service is configured through the file .travis.yml and
additional scripts are under the directory meta/travis-ci.