File: INSTALL

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Basic Installation
==================

    For more information specific to this package, please read the README
file. This source code distribution  is autoconfiguring and you should be 
able to compile it and install it without manual interventions such as 
editing Makefiles, configuration files, and so on. These are generic 
instructions for people who are not familiar with installing autoconfiguring
software.

The simplest way to compile this package is to enter the source code
main directory and do the following:
   
  1. Configure the source code by typing:
        % sh ./configure

     If you're planning to install the package into your home directory
     or to a location other than `/usr/local' then add the flag
     `--prefix=PATH' to `configure'. For example, if your home directory  
     is `/home/luser' you can configure the package to install itself there
     by invoking:
        % sh ./configure --prefix=/home/luser
     
     While running, `configure' prints some messages telling which
     features is it checking for. 

  2. Compile the package by typing:
        % make
     Running `make' takes a while. If this is a very large package, now
     is the time to go make some coffee.
     
  3. Some packages are bundled with self-tests for source-code 
     verification. If this package includes such tests, you can 
     optionally run them after compilation by typing 
        % make check

  4. Type `make install' to install the programs and any data files and
     documentation. Type `make uninstall' to undo the installation.
     During installation, the following files go to the following directories:
        Executables          -> /prefix/bin
        docs and samples     -> /prefix/share/doc/source-highlight
        conf files           -> /prefix/share/source-highlight
     where `prefix' is either `/usr/local' or the PATH that you specified
     in the `--prefix' flag.

     If any of these directories do not presently exist, they will be
     created on demand. 

     If you are installing in your home directory make sure that 
     `/home/luser/bin' is in your path. If you're using the bash shell
     add this line at the end of your .cshrc file:
        PATH="/home/luser/bin:${PATH}"
        export PATH
     If you are using csh or tcsh, then use this line instead:
        setenv PATH /home/luser/bin:${PATH}
     By prepending your home directory to the rest of the PATH you can
     override systemwide installed software with your own custom installation.

  5. You can remove the program binaries and object files from the
     source code directory by typing `make clean'.  To also remove the
     files that `configure' created (so you can compile the package for
     a different kind of computer), type `make distclean'.

Building RPMs
=============

   You can build an .rpm by issuing the following command:

   rpm -tb source-highlight-@VERSION@.tar.gz

and an .rpm.src with the following command:

   rpm -ts source-highlight-@VERSION@.tar.gz

You may want to check the rpm documentation for further options.

Compilers and Options
=====================

Some systems require unusual options for compilation or linking that the
`configure' script does not know about.  Run `./configure --help' for
details on some of the pertinent environment variables.

   You can give `configure' initial values for configuration parameters
by setting variables in the command line or in the environment.  Here
is an example:

     ./configure CC=c89 CFLAGS=-O2 LIBS=-lposix

   *Note Defining Variables::, for more details.

Installation Names
==================

By default, `make install' will install the package's files in
`/usr/local/bin', `/usr/local/man', etc.  You can specify an
installation prefix other than `/usr/local' by giving `configure' the
option `--prefix=PREFIX'.

   You can specify separate installation prefixes for
architecture-specific files and architecture-independent files.  If you
give `configure' the option `--exec-prefix=PREFIX', the package will
use PREFIX as the prefix for installing programs and libraries.
Documentation and other data files will still use the regular prefix.

   In addition, if you use an unusual directory layout you can give
options like `--bindir=DIR' to specify different values for particular
kinds of files.  Run `configure --help' for a list of the directories
you can set and what kinds of files go in them.

   If the package supports it, you can cause programs to be installed
with an extra prefix or suffix on their names by giving `configure' the
option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'.

Compiler configuration
======================

   The `configure' shell script is responsible for choosing and configuring
the compiler(s). 

The following options allow you to specify whether you
want to enable or disable various debugging mechanisms:

`--enable-warnings'
      Make the compilers very picky about warnings. Try this whenever you
      write new code since it may catch a few bugs. This is not active by
      default because all too often warnings can be too picky and scare
      the end-user.

`--enable-input-chroot'
      hardcode in the program the path to prepend for input files.
      Useful when the programs are built for CGI, in order to hide,
      in the html page, the real structure of the server file system.

All programs are compiled with optimization level 2 by default (-O2).
Occasionally that confuses the debugger when code is inlined. To disable
optimization and enable debugging, set the shell environment variables
CFLAGS, CXXFLAGS, FFLAGS to `-g'. On the bash shell, you can do this
like this:
  $ export CFLAGS="-g"
  $ export CXXFLAGS="-g"
  $ export FFLAGS="-g"
On the tcsh shell, use the `setenv' command instead:
  % setenv CFLAGS "-g"
  ...etc...
For other shell, please consult your shell's documentation.

Similarly, you can increase the optimization level by assigning these
variables to "-g -O3". 

Depending on what languages the package uses, some of these options may
or may not be available. To see what is available, type:
    % sh ./configure --help

About the configure script
==========================
 
   The `configure' shell script attempts to guess correct values for
various system-dependent variables used during compilation.  It uses
those values to create a `Makefile' in each directory of the package.
It may also create one or more `.h' files containing system-dependent
definitions.  Finally, it creates a shell script `config.status' that
you can run in the future to recreate the current configuration, a file
`config.cache' that saves the results of its tests to speed up
reconfiguring, and a file `config.log' containing compiler output
(useful mainly for debugging `configure').

   If you need to do unusual things to compile the package, please try
to figure out how `configure' could check whether to do them, and mail
diffs or instructions to the address given in the `README' so they can
be considered for the next release.  If at some point `config.cache'
contains results you don't want to keep, you may remove or edit it.

   The file `configure.in' is used to create `configure' by a program
called `autoconf'.  You only need `configure.in' if you want to change
it or regenerate `configure' using a newer version of `autoconf'.

Advanced installation options.
==============================

   The `configure' script also understands the following more advanced
options, to handle situations for which `--prefix' alone is not sufficient.

   You can specify separate installation prefixes for
architecture-specific files and architecture-independent files.  If you
give `configure' the option `--exec-prefix=PATH', the package will use
PATH as the prefix for installing programs and libraries.
Documentation and other data files will still use the regular prefix.

   In addition, if you use an unusual directory layout you can give
options like `--bindir=PATH' to specify different values for particular
kinds of files.  Run `configure --help' for a list of the directories
you can set and what kinds of files go in them.

   If the package supports it, you can cause programs to be installed
with an extra prefix or suffix on their names by giving `configure' the
option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'.

Optional Features
=================

Some packages pay attention to `--enable-FEATURE' options to
`configure', where FEATURE indicates an optional part of the package.
They may also pay attention to `--with-PACKAGE' options, where PACKAGE
is something like `gnu-as' or `x' (for the X Window System).  The
`README' should mention any `--enable-' and `--with-' options that the
package recognizes.

   For packages that use the X Window System, `configure' can usually
find the X include and library files automatically, but if it doesn't,
you can use the `configure' options `--x-includes=DIR' and
`--x-libraries=DIR' to specify their locations.

Specifying the System Type
==========================

There may be some features `configure' cannot figure out automatically,
but needs to determine by the type of machine the package will run on.
Usually, assuming the package is built to be run on the _same_
architectures, `configure' can figure that out, but if it prints a
message saying it cannot guess the machine type, give it the
`--build=TYPE' option.  TYPE can either be a short name for the system
type, such as `sun4', or a canonical name which has the form:

     CPU-COMPANY-SYSTEM

where SYSTEM can have one of these forms:

     OS KERNEL-OS

   See the file `config.sub' for the possible values of each field.  If
`config.sub' isn't included in this package, then this package doesn't
need to know the machine type.

   If you are _building_ compiler tools for cross-compiling, you should
use the `--target=TYPE' option to select the type of system they will
produce code for.

   If you want to _use_ a cross compiler, that generates code for a
platform different from the build platform, you should specify the
"host" platform (i.e., that on which the generated programs will
eventually be run) with `--host=TYPE'.

Sharing Defaults
================

If you want to set default values for `configure' scripts to share, you
can create a site shell script called `config.site' that gives default
values for variables like `CC', `cache_file', and `prefix'.
`configure' looks for `PREFIX/share/config.site' if it exists, then
`PREFIX/etc/config.site' if it exists.  Or, you can set the
`CONFIG_SITE' environment variable to the location of the site script.
A warning: not all `configure' scripts look for a site script.

Defining Variables
==================

Variables not defined in a site shell script can be set in the
environment passed to `configure'.  However, some packages may run
configure again during the build, and the customized values of these
variables may be lost.  In order to avoid this problem, you should set
them in the `configure' command line, using `VAR=value'.  For example:

     ./configure CC=/usr/local2/bin/gcc

will cause the specified gcc to be used as the C compiler (unless it is
overridden in the site shell script).

`configure' Invocation
======================

`configure' recognizes the following options to control how it operates.

`--help'
`-h'
     Print a summary of the options to `configure', and exit.

`--version'
`-V'
     Print the version of Autoconf used to generate the `configure'
     script, and exit.

`--cache-file=FILE'
     Enable the cache: use and save the results of the tests in FILE,
     traditionally `config.cache'.  FILE defaults to `/dev/null' to
     disable caching.

`--config-cache'
`-C'
     Alias for `--cache-file=config.cache'.

`--quiet'
`--silent'
`-q'
     Do not print messages saying which checks are being made.  To
     suppress all normal output, redirect it to `/dev/null' (any error
     messages will still be shown).

`--srcdir=DIR'
     Look for the package's source code in directory DIR.  Usually
     `configure' can determine that directory automatically.

`configure' also accepts some other, not widely useful, options.  Run
`configure --help' for more details.

--------------------

Please send all bug reports by electronic mail to:
bug-source-highlight at gnu.org

My home page is
http://www.lorenzobettini.it

source-highlight is free GPL software. 
See the file COPYING for copying conditions.
Anyway I won't get offended if you send me a postcard :-)