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INSTALL
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INSTALL
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INSTALLATION PROCEDURES FOR THE COQ V8.1 SYSTEM
-----------------------------------------------
WHAT DO YOU NEED ?
==================
Coq is designed to work on computers equipped with a POSIX (Unix or
a clone) operating system. It also works under Microsoft Windows
(see INSTALL.win); for a precompiled MacOS X package, see
INSTALL.macosx.
Coq is known to be actively used under GNU/Linux (i386, amd64 and
ppc) and FreeBSD. Automated tests are run under many, many
different architectures under GNU/Linux.
Naturally, Coq will run faster on an architecture where OCaml can
compile to native code, rather than only bytecode. At time of
writing, that is IA32, PowerPC, AMD64, Alpha, Sparc, Mips, IA64,
HPPA and StrongArm. See
http://caml.inria.fr/ocaml/portability.en.html for details.
Your OS may already contain Coq under the form of a precompiled
package or ready-to-compile port. In this case, and if the supplied
version suits you, follow the usual procedure for your OS to
install it. E.g.:
- Debian GNU/Linux (or Debian GNU/k*BSD or ...):
aptitude install coq
- Gentoo GNU/Linux: emerge sci-mathematics/coq
Should you need or prefer to compile Coq V8.1 yourself, you need:
- Objective Caml version 3.07 or later
(available at http://caml.inria.fr/)
For Ocaml version >= 3.10.0, you also need to install camlp5
version <= 4.08, or 5.01 transitional
(see http://pauillac.inria.fr/~ddr/camlp5/)
- GNU Make
- a C compiler
- for Coqide, the Lablgtk development files, and the GTK libraries
By FTP, Coq comes as a single compressed tar-file. You have
probably already decompressed it if you are reading this document.
QUICK INSTALLATION PROCEDURE.
=============================
1. ./configure
2. make world
3. make install (you may need superuser rights)
4. make clean
INSTALLATION PROCEDURE IN DETAILS (NORMAL USERS).
=================================================
1- Check that you have the Objective Caml compiler version 3.07 (or later)
installed on your computer and that "ocamlmktop" and "ocamlc" (or
its native code version "ocamlc.opt") lie in a directory which is present
in your $PATH environment variable.
To get Coq in native-code, (it runs 4 to 10 times faster than
bytecode, but it takes more time to get compiled and the binary is
bigger), you will also need the "ocamlopt" (or its native code version
"ocamlopt.opt") command.
2- Check that you have Camlp4 installed on your
computer and that the command "camlp4" lies in a directory which
is present in your $PATH environment variable path.
(You need Camlp4 in both bytecode and native versions if
your platform supports it).
Note: in the latest ocaml distributions, camlp4 comes with ocaml so
you do not have to check this point anymore.
3- The uncompression and un-tarring of the distribution file gave birth
to a directory named "coq-8.xx". You can rename this directory and put
it wherever you want. Just keep in mind that you will need some spare
space during the compilation (reckon on about 50 Mb of disk space
for the whole system in native-code compilation). Once installed, the
binaries take about 14 Mb, and the library about 9 Mb.
4- First you need to configure the system. It is done automatically with
the command:
./configure <options>
The "configure" script will ask you for directories where to put
the Coq binaries, standard library, man pages, etc. It will propose
you some default values.
The "configure" script accepts the following options:
-prefix <dir>
Binaries, library, man pages and Emacs mode will be respectively
installed in <dir>/bin, <dir>/lib/coq, <dir>/man and
<dir>/lib/emacs/site-lisp
-bindir <dir> (default: /usr/local/bin)
Directory where the binaries will be installed
-libdir <dir> (default: /usr/local/lib/coq)
Directory where the Coq standard library will be installed
-mandir <dir> (default: /usr/local/man)
Directory where the Coq manual pages will be installed
-emacslib <dir> (default: /usr/local/lib/emacs/site-lisp)
Directory where the Coq Emacs mode will be installed
-arch <value> (default is the result of the command "arch")
An arbitrary architecture name for your machine (useful when
compiling Coq on two different architectures for which the
result of "arch" is the same, e.g. Sun OS and Solaris)
-local
Compile Coq to run in its source directory. The installation (step 6)
is not necessary in that case.
-opt
Use the ocamlc.opt compiler instead of ocamlc (and ocamlopt.opt
compiler instead of ocamlopt). Makes compilation faster (recommended).
-nowarnings
Disable the Objective Caml compiler warnings. This option has no
effect on the result of the compilation.
5- Still in the root directory, do
make world
to compile Coq in Objective Caml bytecode (and native-code if supported).
This will compile the entire system. This phase can take more or less time,
depending on your architecture and is fairly verbose.
6- You can now install the Coq system. Executables, libraries, manual pages
and emacs mode are copied in some standard places of your system, defined at
configuration time (step 3). Just do
umask 022
make install
Of course, you may need superuser rights to do that.
To use the Coq emacs mode you also need to put the following lines
in you .emacs file:
(setq auto-mode-alist (cons '("\\.v$" . coq-mode) auto-mode-alist))
(autoload 'coq-mode "coq" "Major mode for editing Coq vernacular." t)
7- You can now clean all the sources. (You can even erase them.)
make clean
INSTALLATION PROCEDURE FOR ADVANCED USERS.
==========================================
If you wish to write tactics (and that really means that you belong
to advanced users !) you *must* keep the Coq sources, without cleaning
them. Therefore, to avoid a duplication of binaries and library, it is
not necessary to do the installation step (6- above).
You just have to tell it at configuration step (4- above) with the
option -local :
./configure -local <other options>
Then compile the sources as described in step 5 above. The resulting
binaries will reside in the subdirectory bin/.
If you want to compile the sources for debugging (i.e. with the option
-g of the Caml compiler) then add the -debug option at configuration
step :
./configure -debug <other options>
and then compile the sources (step 5). Then you must make a Coq toplevel
including your own tactics, which must be compiled with -g, with coqmktop.
See the chapter 16 of the Coq Reference Manual for details about how
to use coqmktop and the Objective Caml debugger with Coq.
THE AVAILABLE COMMANDS.
=======================
There are two Coq commands:
coqtop The Coq toplevel
coqc The Coq compiler
There are actually two binaries for the interactive system, coqtop.byte
and coqtop.opt (respectively bytecode and native code versions of Coq).
coqtop is a link to the fastest version, i.e. coqtop.opt if any, and
coqtop.byte otherwise. coqc also invokes the fastest version of Coq.
Options -opt and -byte to coqtop and coqc selects a particular binary.
* `coqtop' launches Coq in the interactive mode. The default state
(see the "-inputstate" option) is `initial.coq', which contains some
basic logical definitions, the associated parsing and printing rules,
and the following tactic modules: Equality, Tauto, Inv, EAuto and Refine.
* `coqc' allows compilation of Coq files directly from the command line.
To compile a file foo.v, do:
coqc foo.v
It will produce a file foo.vo, that you can now load through the Coq
command "Require".
A detailed description of these commands and of their options is given
in the Reference Manual (which you can get by FTP, in the doc/ directory)
and in the corresponding manual pages.
COMMON PROBLEMS.
================
* On some sites, when running `./configure', `pwd' returned a
path which is not valid from another machine (it may look like
"/tmp_mnt/foo/...") and, as a consequence, you won't be able to run
coqtop or coqc. The solution is to give the correct value, with
./configure -src <correct path> <other options>
* The `make install' procedure uses mkdirhier, a program that may
not be present on certain systems. To fix that, try to replace
mkdirhier with mkdir -p
COMPILING FOR DIFFERENT ARCHITECTURES.
======================================
This section explains how to compile Coq for several architecture,
sharing the same sources. The important fact is that some files are
architecture dependent (.cmx, .o and executable files for instance)
but others are not (.cmo and .vo). Consequently, you can :
o save some time during compilation by not cleaning the architecture
independent files;
o save some space during installation by sharing the Coq standard
library (which is fully architecture independent).
So, in order to compile Coq for a new architecture, proceed as follows:
* Omit step 7 above and clean only the architecture dependent files:
it is done automatically with the command
make archclean
* Configure the system for the new architecture:
./configure <options>
You can specify the same directory for the standard library but you
MUST specify a different directory for the binaries (of course).
* Compile and install the system as described in steps 5 and 6 above.
MOVING BINARIES OR LIBRARY.
===========================
If you move the binaries or the library, Coq will be "lost".
Running "coqtop" would then return an error message of the kind:
Error during initialization :
Error: Can't find file initial.coq on loadpath
If you really have (or want) to move the binaries or the library, then
you have to indicate their new places to Coq, using the options -bindir (for
the binaries directory) and -libdir (for the standard library directory) :
coqtop -bindir <new directory> -libdir <new directory>