Updated INSTALL file

1 files changed, 99 insertions, 44 deletions

diff --git a/INSTALL b/INSTALL
index 23e5f25..8b82ade 100644
--- a/INSTALL
+++ b/INSTALL
@@ -1,16 +1,19 @@
 Installation Instructions
 *************************
 
-Copyright (C) 1994, 1995, 1996, 1999, 2000, 2001, 2002, 2004, 2005 Free
-Software Foundation, Inc.
+Copyright (C) 1994, 1995, 1996, 1999, 2000, 2001, 2002, 2004, 2005,
+2006, 2007, 2008 Free Software Foundation, Inc.
 
-This file is free documentation; the Free Software Foundation gives
+   This file is free documentation; the Free Software Foundation gives
 unlimited permission to copy, distribute and modify it.
 
 Basic Installation
 ==================
 
-These are generic installation instructions.
+   Briefly, the shell commands `./configure; make; make install' should
+configure, build, and install this package.  The following
+more-detailed instructions are generic; see the `README' file for
+instructions specific to this package.
 
    The `configure' shell script attempts to guess correct values for
 various system-dependent variables used during compilation.  It uses
@@ -23,9 +26,9 @@ debugging `configure').
 
    It can also use an optional file (typically called `config.cache'
 and enabled with `--cache-file=config.cache' or simply `-C') that saves
-the results of its tests to speed up reconfiguring.  (Caching is
+the results of its tests to speed up reconfiguring.  Caching is
 disabled by default to prevent problems with accidental use of stale
-cache files.)
+cache files.
 
    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
@@ -35,20 +38,17 @@ some point `config.cache' contains results you don't want to keep, you
 may remove or edit it.
 
    The file `configure.ac' (or `configure.in') is used to create
-`configure' by a program called `autoconf'.  You only need
-`configure.ac' if you want to change it or regenerate `configure' using
-a newer version of `autoconf'.
+`configure' by a program called `autoconf'.  You need `configure.ac' if
+you want to change it or regenerate `configure' using a newer version
+of `autoconf'.
 
 The simplest way to compile this package is:
 
   1. `cd' to the directory containing the package's source code and type
-     `./configure' to configure the package for your system.  If you're
-     using `csh' on an old version of System V, you might need to type
-     `sh ./configure' instead to prevent `csh' from trying to execute
-     `configure' itself.
+     `./configure' to configure the package for your system.
 
-     Running `configure' takes awhile.  While running, it prints some
-     messages telling which features it is checking for.
+     Running `configure' might take a while.  While running, it prints
+     some messages telling which features it is checking for.
 
   2. Type `make' to compile the package.
 
@@ -67,42 +67,57 @@ The simplest way to compile this package is:
      all sorts of other programs in order to regenerate files that came
      with the distribution.
 
+  6. Often, you can also type `make uninstall' to remove the installed
+     files again.
+
 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.
+   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
+     ./configure CC=c99 CFLAGS=-g LIBS=-lposix
 
    *Note Defining Variables::, for more details.
 
 Compiling For Multiple Architectures
 ====================================
 
-You can compile the package for more than one kind of computer at the
+   You can compile the package for more than one kind of computer at the
 same time, by placing the object files for each architecture in their
-own directory.  To do this, you must use a version of `make' that
-supports the `VPATH' variable, such as GNU `make'.  `cd' to the
+own directory.  To do this, you can use GNU `make'.  `cd' to the
 directory where you want the object files and executables to go and run
 the `configure' script.  `configure' automatically checks for the
 source code in the directory that `configure' is in and in `..'.
 
-   If you have to use a `make' that does not support the `VPATH'
-variable, you have to compile the package for one architecture at a
-time in the source code directory.  After you have installed the
-package for one architecture, use `make distclean' before reconfiguring
-for another architecture.
+   With a non-GNU `make', it is safer to compile the package for one
+architecture at a time in the source code directory.  After you have
+installed the package for one architecture, use `make distclean' before
+reconfiguring for another architecture.
+
+   On MacOS X 10.5 and later systems, you can create libraries and
+executables that work on multiple system types--known as "fat" or
+"universal" binaries--by specifying multiple `-arch' options to the
+compiler but only a single `-arch' option to the preprocessor.  Like
+this:
+
+     ./configure CC="gcc -arch i386 -arch x86_64 -arch ppc -arch ppc64" \
+                 CXX="g++ -arch i386 -arch x86_64 -arch ppc -arch ppc64" \
+                 CPP="gcc -E" CXXCPP="g++ -E"
+
+   This is not guaranteed to produce working output in all cases, you
+may have to build one architecture at a time and combine the results
+using the `lipo' tool if you have problems.
 
 Installation Names
 ==================
 
-By default, `make install' installs the package's commands under
+   By default, `make install' installs the package's commands under
 `/usr/local/bin', include files under `/usr/local/include', etc.  You
 can specify an installation prefix other than `/usr/local' by giving
 `configure' the option `--prefix=PREFIX'.
@@ -125,7 +140,7 @@ option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'.
 Optional Features
 =================
 
-Some packages pay attention to `--enable-FEATURE' options to
+   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
@@ -137,14 +152,36 @@ 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.
 
+Particular systems
+==================
+
+   On HP-UX, the default C compiler is not ANSI C compatible.  If GNU
+CC is not installed, it is recommended to use the following options in
+order to use an ANSI C compiler:
+
+     ./configure CC="cc -Ae"
+
+and if that doesn't work, install pre-built binaries of GCC for HP-UX.
+
+   On OSF/1 a.k.a. Tru64, some versions of the default C compiler cannot
+parse its `<wchar.h>' header file.  The option `-nodtk' can be used as
+a workaround.  If GNU CC is not installed, it is therefore recommended
+to try
+
+     ./configure CC="cc"
+
+and if that doesn't work, try
+
+     ./configure CC="cc -nodtk"
+
 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
+   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:
 
@@ -170,9 +207,9 @@ 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'.
+   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.
@@ -181,7 +218,7 @@ 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
+   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
@@ -190,21 +227,29 @@ them in the `configure' command line, using `VAR=value'.  For example:
      ./configure CC=/usr/local2/bin/gcc
 
 causes the specified `gcc' to be used as the C compiler (unless it is
-overridden in the site shell script).  Here is a another example:
+overridden in the site shell script).
 
-     /bin/bash ./configure CONFIG_SHELL=/bin/bash
+Unfortunately, this technique does not work for `CONFIG_SHELL' due to
+an Autoconf bug.  Until the bug is fixed you can use this workaround:
 
-Here the `CONFIG_SHELL=/bin/bash' operand causes subsequent
-configuration-related scripts to be executed by `/bin/bash'.
+     CONFIG_SHELL=/bin/bash /bin/bash ./configure CONFIG_SHELL=/bin/bash
 
 `configure' Invocation
 ======================
 
-`configure' recognizes the following options to control how it operates.
+   `configure' recognizes the following options to control how it
+operates.
 
 `--help'
 `-h'
-     Print a summary of the options to `configure', and exit.
+     Print a summary of all of the options to `configure', and exit.
+
+`--help=short'
+`--help=recursive'
+     Print a summary of the options unique to this package's
+     `configure', and exit.  The `short' variant lists options used
+     only in the top level, while the `recursive' variant lists options
+     also present in any nested packages.
 
 `--version'
 `-V'
@@ -231,6 +276,16 @@ configuration-related scripts to be executed by `/bin/bash'.
      Look for the package's source code in directory DIR.  Usually
      `configure' can determine that directory automatically.
 
+`--prefix=DIR'
+     Use DIR as the installation prefix.  *Note Installation Names::
+     for more details, including other options available for fine-tuning
+     the installation locations.
+
+`--no-create'
+`-n'
+     Run the configure checks, but stop before creating any output
+     files.
+
 `configure' also accepts some other, not widely useful, options.  Run
 `configure --help' for more details.