-This is release 1.3.3 of Guile, Project GNU's extension language
-library. Guile is an interpreter for Scheme, packaged as a library
-that you can link into your applications to give them their own
-scripting language. Guile will eventually support other languages as
-well, giving users of Guile-based applications a choice of languages.
-
-Please send bug reports to bug-guile@gnu.org.
-
-About This Distribution ==============================================
-
-Building and installing this distribution gives you:
-guile --- a stand-alone interpreter for Guile, usually installed in
- /usr/local/bin. With no arguments, this is a simple
- interactive Scheme interpreter. It can also be used as an
- interpreter for script files; see the NEWS file for details.
-guile-config --- a Guile script which provides the information necessary
- to link your programs against the Guile library.
-guile-snarf --- a script to parse declarations in your C code for
- Scheme-visible C functions, Scheme objects to be used by C code, etc.
-libguile.a --- an object library containing the Guile interpreter,
- usually installed in /usr/local/lib. You can use Guile in
- your own programs by linking against this.
-libqthreads.a --- an object library containing the QuickThreads
- primitives. If you enabled thread support when you configured
- Guile, you will need to link your code against this too.
-<libguile.h>, <guile/gh.h>, <libguile/*.h> --- header files for
- libguile.a, usually installed in /usr/local/include.
-ice-9, ice-9/*.scm --- run-time support for Guile: the module
- system, read-eval-print loop, some R4RS code and other
- infrastructure. Usually installed in
- /usr/local/share/guile/<version>.
-data-rep.info --- An essay on how to write C code that works with
- Guile Scheme values.
-
-Interesting files include:
-- INSTALL, which contains instructions on building and installing Guile.
-- NEWS, which describes user-visible changes since the last release of Guile.
-- COPYING, which describes the terms under which you may redistribute
- Guile, and explains that there is no warranty.
-
-The Guile source tree is laid out as follows:
-
-libguile:
- The Guile Scheme interpreter --- both the object library
- for you to link with your programs, and the executable you can run.
-ice-9: Guile's module system, initialization code, and other infrastructure.
-guile-config:
- Source for the guile-config script.
-qt: A cooperative threads package from the University of Washington,
- which Guile can use. If you configure Guile with the
- --with-threads flag, you will need to link against the -lqt
- library, found in this directory. Qt is under a separate
- copyright; see `qt/README' for more details.
-doc: Some preliminary documentation for Guile. The real Guile
- manual is incomplete, and is currently being revised.
-doc/example-smob: Sample code, discussed in the preliminary
- documentation above, for a program that extends Guile with a
- new data type, and functions that operate on it.
-
-
-Anonymous CVS Access and FTP snapshots ===============================
-
-We make the developers' working Guile sources available via anonymous
-CVS, and by nightly snapshots, accessible via FTP. See the files
-`ANON-CVS' and `SNAPSHOTS' for details.
-
-If you would like to receive mail when people commit changes to the
-Guile CVS repository, you can subscribe to guile-cvs@sourceware.cygnus.com
-by sending a message to guile-cvs-subscribe@sourceware.cygnus.com. Even
-better, you can get daily digests of these commit messages by sending
-a message to guile-cvs-digest-subscribe@sourceware.cygnus.com.
-
-If you want to subscribe an e-mail address other than the one that
-appears in your From: header, say foo@bar.com, send a mail note to
-guile-cvs-subscribe-foo=bar.com@sourceware.cygnus.com.
-
-
-Hacking It Yourself ==================================================
-
-As distributed, Guile needs only an ANSI C compiler and a Unix system
-to compile. However, Guile's makefiles, configuration scripts, and a
-few other files are automatically generated, not written by hand. If
-you want to make changes to the system (which we encourage!) you will
-find it helpful to have the tools we use to develop Guile. They
-are the following:
-
-Autoconf 2.13 --- a system for automatically generating `configure'
- scripts from templates which list the non-portable features a
- program would like to use. Available in
- "ftp://ftp.gnu.org/pub/gnu/autoconf"
-
-Automake 1.4 --- a system for automatically generating Makefiles that
- conform to the (rather Byzantine) GNU coding standards. The
- nice thing is that it takes care of hairy targets like 'make
- dist' and 'make distclean', and automatically generates
- Makefile dependencies. Automake is available in
- "ftp://ftp.gnu.org/pub/gnu/automake"
-
- Before using automake, you may need to copy `threads.m4' and
- `guile.m4' from the top directory of the Guile core disty to
- `/usr/local/share/aclocal.
-
-libtool 1.3.3 --- a system for managing the zillion hairy options needed
- on various systems to produce shared libraries. Available in
- "ftp://ftp.gnu.org/pub/gnu/libtool"
-
-You are lost in a little maze of automatically generated files, all
-different.
->
-
-
-Obtaining Guile ======================================================
-
-The latest official Guile release is available via anonymous FTP from
-prep.ai.mit.edu, as /pub/gnu/guile-1.3.tar.gz.
-
-Via the web, that's: ftp://prep.ai.mit.edu/pub/gnu/guile-1.3.tar.gz
-For getit, that's: prep.ai.mit.edu:/pub/gnu/guile-1.3.tar.gz
-
-The mailing list `guile@sourceware.cygnus.com' carries discussions,
-questions, and often answers, about Guile. To subscribe, send mail to
-guile-subscribe@sourceware.cygnus.com. Of course, please send bug
-reports (and fixes!) to bug-guile@gnu.org. Note that one address is
-@sourceware.cygnus.com, and the other is at @gnu.org.
+This is version 2.0 of Guile, Project GNU's extension language library.
+Guile is an implementation of the Scheme programming language, packaged
+as a library that can be linked into applications to give them their own
+extension language. Guile supports other languages as well, giving
+users of Guile-based applications a choice of languages.
+
+Please send bug reports to bug-guile@gnu.org.
+
+See the LICENSE file for the specific terms that apply to Guile. Note
+that for any copyright year range specified as YYYY-ZZZZ in this
+package, the range specifies every single year in that closed interval.
+
+
+Additional INSTALL instructions ===========================================
+
+Generic instructions for configuring and compiling Guile can be found
+in the INSTALL file. Guile specific information and configure options
+can be found below, including instructions for installing SLIB.
+
+Guile depends on the following external libraries.
+- libgmp
+- libiconv
+- libintl
+- libltdl
+- libunistring
+- libgc
+- libffi
+It will also use the libreadline library if it is available.
+
+There is a corresponding `--with-XXX-prefix' option for each of these
+libraries (except for libgc and libffi which use `pkg-config', see
+below) that you can use when invoking ./configure, if you have these
+libraries installed in a location other than the standard places (/usr
+and /usr/local).
+
+These options are provided by the Gnulib `havelib' module, and details
+of how they work are documented in `Searching for Libraries' in the
+Gnulib manual (http://www.gnu.org/software/gnulib/manual). The extent
+to which they work on a given OS depends on whether that OS supports
+encoding full library path names in executables (aka `rpath'). Also
+note that using these options, and hence hardcoding full library path
+names (where that is supported), makes it impossible to later move the
+built executables and libraries to an installation location other than
+the one that was specified at build time.
+
+Another possible approach is to set CPPFLAGS and LDFLAGS on the
+configure command-line, so that they include -I options for all the
+non-standard places where you have installed header files and -L
+options for all the non-standard places where you have installed
+libraries. This will allow configure and make to find those headers
+and libraries during the build. E.g.:
+
+ ../configure [...] CPPFLAGS='-I/my/include' LDFLAGS='-L/my/lib'
+
+The locations found will not be hardcoded into the build executables and
+libraries, so with this approach you will probably also need to set
+LD_LIBRARY_PATH correspondingly, to allow Guile to find the necessary
+libraries again at runtime.
+
+
+Required External Packages ================================================
+
+Guile requires the following external packages:
+
+ - GNU MP, at least version 4.1
+
+ GNU MP is used for bignum arithmetic. It is available from
+ http://gmplib.org/ .
+
+ - libltdl from GNU Libtool, at least version 1.5.6
+
+ libltdl is used for loading extensions at run-time. It is
+ available from http://www.gnu.org/software/libtool/ .
+
+ - GNU libunistring
+
+ libunistring is used for Unicode string operations, such as the
+ `utf*->string' procedures. It is available from
+ http://www.gnu.org/software/libunistring/ .
+
+ - libgc, at least version 7.0
+
+ libgc (aka. the Boehm-Demers-Weiser garbage collector) is the
+ conservative garbage collector used by Guile. It is available
+ from http://www.hpl.hp.com/personal/Hans_Boehm/gc/ .
+
+ - libffi
+
+ libffi provides a "foreign function interface", used by the
+ `(system foreign)' module. It is available from
+ http://sourceware.org/libffi/ .
+
+ - pkg-config
+
+ Guile's ./configure script uses pkg-config to discover the correct
+ compile and link options for libgc and libffi. For this to work,
+ the `PKG_CONFIG_PATH' environment variable must be set to point to
+ the places where libgc's and libffi's `.pc' files can be found:
+
+ PKG_CONFIG_PATH=/path/to/libgc/lib/pkgconfig:/path/to/libffi/lib/pkgconfig
+
+ Alternatively, when pkg-config is not installed, you can work around
+ this by setting some variables as part of the configure
+ command-line:
+
+ - PKG_CONFIG=true
+
+ - BDW_GC_CFLAGS=<compile flags for picking up libgc headers>
+
+ - BDW_GC_LIBS=<linker flags for picking up the libgc library>
+
+ Note that because you're bypassing all pkg-config checks, you will
+ also have to specify libffi flags as well:
+
+ - LIBFFI_CFLAGS=<compile flags for picking up libffi headers>
+
+ - LIBFFI_LIBS=<linker flags for picking up the libffi library>
+
+
+Special Instructions For Some Systems =====================================
+
+We would like Guile to build on all systems using the simple
+instructions above, but it seems that a few systems still need special
+treatment. If you can send us fixes for these problems, we'd be
+grateful.
+
+ <none yet listed>
+
+Guile specific flags Accepted by Configure =================================
+
+If you run the configure script with no arguments, it should examine
+your system and set things up appropriately. However, there are a few
+switches specific to Guile you may find useful in some circumstances.
+
+--without-threads --- Build without thread support
+
+ Build a Guile executable and library that supports multi-threading.
+
+ The default is to enable threading support when your operating
+ system offsers 'POSIX threads'. When you do not want threading, use
+ `--without-threads'.
+
+--enable-deprecated=LEVEL
+
+ Guile may contain features that are `deprecated'. When a feature is
+ deprecated, it means that it is still there, but that there is a
+ better way of achieving the same thing, and we'd rather have you use
+ this better way. This allows us to eventually remove the old
+ implementation and helps to keep Guile reasonably clean of historic
+ baggage.
+
+ See the file NEWS for a list of features that are currently
+ deprecated. Each entry will also tell you what you should replace
+ your code with.
+
+ To give you some help with this process, and to encourage (OK,
+ nudge) people to switch to the newer methods, Guile can emit
+ warnings or errors when you use a deprecated feature. There is
+ quite a range of possibilities, from being completely silent to
+ giving errors at link time. What exactly happens is determined both
+ by the value of the `--enable-deprecated' configuration option when
+ Guile was built, and by the GUILE_WARN_DEPRECATED environment
+ variable.
+
+ It works like this:
+
+ When Guile has been configured with `--enable-deprecated=no' (or,
+ equivalently, with `--disable-deprecated') then all deprecated
+ features are omitted from Guile. You will get "undefined
+ reference", "variable unbound" or similar errors when you try to
+ use them.
+
+ When `--enable-deprecated=LEVEL' has been specified (for LEVEL not
+ "no"), LEVEL will be used as the default value of the environment
+ variable GUILE_WARN_DEPRECATED. A value of "yes" is changed to
+ "summary" and "shutup" is changed to "no", however.
+
+ When GUILE_WARN_DEPRECATED has the value "no", nothing special
+ will happen when a deprecated feature is used.
+
+ When GUILE_WARN_DEPRECATED has the value "summary", and a
+ deprecated feature has been used, Guile will print this message at
+ exit:
+
+ Some deprecated features have been used. Set the environment
+ variable GUILE_WARN_DEPRECATED to "detailed" and rerun the
+ program to get more information. Set it to "no" to suppress
+ this message.
+
+ When GUILE_WARN_DEPRECATED has the value "detailed", a detailed
+ warning is emitted immediatly for the first use of a deprecated
+ feature.
+
+ The default is `--enable-deprecated=yes'.
+
+ In addition to setting GUILE_WARN_DEPRECATED in the environment, you
+ can also use (debug-enable 'warn-deprecated) and (debug-disable
+ 'warn-deprecated) to enable and disable the detailed messaged at run
+ time.
+
+ Additionally, if your toolchain is new enough, you will receive
+ warnings at link time if you have a Guile extension that uses
+ deprecated functions provided by Guile.
+
+--disable-shared --- Do not build shared libraries.
+--disable-static --- Do not build static libraries.
+
+ Normally, both static and shared libraries will be built if your
+ system supports them.
+
+--enable-debug-freelist --- Enable freelist debugging.
+
+ This enables a debugging version of scm_cell and scm_double_cell,
+ and also registers an extra primitive, the setter
+ `gc-set-debug-check-freelist!'.
+
+ Configure with the --enable-debug-freelist option to enable the
+ gc-set-debug-check-freelist! primitive, and then use:
+
+ (gc-set-debug-check-freelist! #t) # turn on checking of the freelist
+ (gc-set-debug-check-freelist! #f) # turn off checking
+
+ Checking of the freelist forces a traversal of the freelist and a
+ garbage collection before each allocation of a cell. This can slow
+ down the interpreter dramatically, so the setter should be used to
+ turn on this extra processing only when necessary.
+
+--enable-debug-malloc --- Enable malloc debugging.
+
+ Include code for debugging of calls to scm_malloc, scm_realloc, etc.
+
+ It records the number of allocated objects of each kind. This is
+ useful when searching for memory leaks.
+
+ A Guile compiled with this option provides the primitive
+ `malloc-stats' which returns an alist with pairs of kind and the
+ number of objects of that kind.
+
+--enable-guile-debug --- Include internal debugging functions
+--disable-posix --- omit posix interfaces
+--disable-networking --- omit networking interfaces
+--disable-regex --- omit regular expression interfaces
+
+
+Cross building Guile =====================================================
+
+As of Guile 2.0.x, the build process produces a library, libguile-2.0,
+along with Guile "object files" containing bytecode to be interpreted by
+Guile's virtual machine. The bytecode format depends on the endianness
+and word size of the host CPU.
+
+Thus, when cross building Guile, you first need to configure, build and
+install it for your build host.
+
+Then, you may configure Guile for cross building:
+
+ ./configure --host=i686-pc-cygwin --disable-shared
+
+A C compiler for the build system is required. If that doesn't suit it
+can be specified with the CC_FOR_BUILD variable in the usual way, for
+instance:
+
+ ./configure --host=m68k-unknown-linux-gnu CC_FOR_BUILD=/my/local/gcc
+
+Guile for the build system can be specified similarly with the
+GUILE_FOR_BUILD variable, which defaults to whatever `guile' executable
+is found in $PATH. It must have the exact same version has the Guile
+that you intend to cross-build.
+
+
+Using Guile Without Installing It =========================================
+
+The "meta/" subdirectory of the Guile sources contains a script called
+"guile" that can be used to run the Guile that has just been built. Note
+that this is not the same "guile" as the one that is installed; this
+"guile" is a wrapper script that sets up the environment appropriately,
+then invokes the Guile binary.
+
+You may also build external packages against an uninstalled Guile build
+tree. The "uninstalled-env" script in the "meta/" subdirectory will set
+up an environment with a path including "meta/", a modified dynamic
+linker path, a modified PKG_CONFIG_PATH, etc.
+
+For example, you can enter this environment via invoking
+
+ meta/uninstalled-env bash
+
+Within that shell, other packages should be able to build against
+uninstalled Guile.
+
+
+Installing SLIB ===========================================================
+
+In order to use SLIB from Guile you basically only need to put the
+`slib' directory _in_ one of the directories on Guile's load path.
+
+The standard installation is:
+
+ 1. Obtain slib from http://www-swiss.ai.mit.edu/~jaffer/SLIB.html
+
+ 2. Put it in Guile's data directory, that is the directory printed when
+ you type
+
+ guile-config info pkgdatadir
+
+ at the shell prompt. This is normally `/usr/local/share/guile', so the
+ directory will normally have full path `/usr/local/share/guile/slib'.
+
+ 3. Start guile as a user with write access to the data directory and type
+
+ (use-modules (ice-9 slib))
+
+ at the Guile prompt. This will generate the slibcat catalog next to
+ the slib directory.
+
+SLIB's `require' is provided by the Guile module (ice-9 slib).
+
+Example:
+
+ (use-modules (ice-9 slib))
+ (require 'primes)
+ (prime? 7)
+
+
+Guile Documentation ==================================================
+
+The Guile Reference Manual (guile.info) is the primary documentation for
+Guile. A copy of the R5RS Scheme specification is included too
+(r5rs.info).
+
+Info format versions of this documentation are installed as part of
+the normal build process. The texinfo sources are under the doc
+directory, and other formats like Postscript, PDF, DVI or HTML can be
+generated from them with Tex and Texinfo tools.
+
+The doc directory also includes an example-smob subdirectory which has
+the example code from the "Defining New Types (Smobs)" chapter of the
+reference manual.
+
+The Guile WWW page is at
+
+ http://www.gnu.org/software/guile/guile.html
+
+It contains a link to the Guile FAQ.
+
+About This Distribution ==============================================
+
+Interesting files include:
+
+- LICENSE, which contains the exact terms of the Guile license.
+- COPYING.LESSER, which contains the terms of the GNU Lesser General Public License.
+- COPYING, which contains the terms of the GNU General Public License.
+- INSTALL, which contains general instructions for building/installing Guile.
+- NEWS, which describes user-visible changes since the last release of Guile.
+
+Files are usually installed according to the prefix specified to
+configure, /usr/local by default. Building and installing gives you:
+
+Executables, in ${prefix}/bin:
+
+ guile --- a stand-alone interpreter for Guile. With no arguments, this
+ is a simple interactive Scheme interpreter. It can also be used
+ as an interpreter for script files; see the NEWS file for details.
+ guile-config --- a Guile script which provides the information necessary
+ to link your programs against the Guile library.
+ guile-snarf --- a script to parse declarations in your C code for
+ Scheme-visible C functions, Scheme objects to be used by C code,
+ etc.
+
+Libraries, in ${prefix}/lib. Depending on the platform and options
+ given to configure, you may get shared libraries in addition
+ to or instead of these static libraries:
+
+ libguile.a --- an object library containing the Guile interpreter,
+ You can use Guile in your own programs by linking against this.
+ libguilereadline.a --- an object library containing glue code for the
+ GNU readline library.
+
+ libguile-srfi-*.a --- various SRFI support libraries
+
+Header files, in ${prefix}/include:
+
+ libguile.h, guile/gh.h, libguile/*.h --- for libguile.
+ guile-readline/readline.h --- for guile-readline.
+
+Support files, in ${prefix}/share/guile/<version>:
+
+ ice-9/* --- run-time support for Guile: the module system,
+ read-eval-print loop, some R4RS code and other infrastructure.
+ oop/* --- the Guile Object-Oriented Programming System (GOOPS)
+ scripts/* --- executable modules, i.e., scheme programs that can be both
+ called as an executable from the shell, and loaded and used as a
+ module from scheme code. See scripts/README for more info.
+ srfi/* --- SRFI support modules. See srfi/README for more info.
+
+Automake macros, in ${prefix}/share/aclocal:
+
+ guile.m4
+
+Documentation in Info format, in ${prefix}/info:
+
+ guile --- Guile reference manual.
+
+ guile-tut --- Guile tutorial.
+
+ GOOPS --- GOOPS reference manual.
+
+ r5rs --- Revised(5) Report on the Algorithmic Language Scheme.
+
+
+The Guile source tree is laid out as follows:
+
+libguile:
+ The Guile Scheme interpreter --- both the object library
+ for you to link with your programs, and the executable you can run.
+ice-9: Guile's module system, initialization code, and other infrastructure.
+guile-config:
+ Source for the guile-config script.
+guile-readline:
+ The glue code for using GNU readline with Guile. This
+ will be build when configure can find a recent enough readline
+ library on your system.
+doc: Documentation (see above).
+
+Git Repository Access ================================================
+
+Guile's source code is stored in a Git repository at Savannah. Anyone
+can access it using `git-clone' from one of the following URLs:
+
+ git://git.sv.gnu.org/guile.git
+ http://git.sv.gnu.org/r/guile.git
+
+Developers with a Savannah SSH account can also access it from:
+
+ ssh://git.sv.gnu.org/srv/git/guile.git
+
+The repository can also be browsed on-line at the following address:
+
+ http://git.sv.gnu.org/gitweb/?p=guile.git
+
+For more information on Git, please see:
+
+ http://git.or.cz/
+
+Please send problem reports to <bug-guile@gnu.org>.