tools-make/Documentation/install.texi

@node Top, Introduction, (dir), (dir)
@chapter GNUstep makefile package installation

@menu
* Introduction::                
* Configuration::               
* Installation::                
* Setup::                       
@end menu

@node Introduction, Configuration, Top, Top
@section Introduction

If you are installing this package as part of the GNUstep core
libraries, read the file GNUstep-HOWTO for more complete instructions on
how to install the entire GNUstep package (including this package).
GNUstep-HOWTO comes with the core distribution and also is located at the
same ftp sites as this library.

When you configure additional libraries, make sure you use the same
configuration options as with gstep-make.

Also make sure you've read the machine-specific instructions for your
particular operating system and CPU. These instructions come with the
GNUstep-HOWTO and are also located at the GNUstep web site at
@url{http://www.gnustep.org}.

@node Configuration, Installation, Introduction, Top
@section Configuration

The GNUstep packages uses the Autoconf mechanism for
configuration; it checks some host capabilties which are used by
all GNUstep software.  To configure just type:

@example
./configure
@end example

The GNUstep makefile package needs a root directory.  If the
GNUSTEP_SYSTEM_ROOT environment variable is set then configure will
use its value as the root directory.  You can also specify the root
directory when you run configure with the prefix paramter; the
following command makes /usr/local/GNUstep the root directory:

@example
./configure --prefix=/usr/local/GNUstep
@end example

If you do not have the GNUSTEP_SYSTEM_ROOT environment variable set
and you do not specify a root directory when running configure, then
configure will use /usr/GNUstep as the default root directory.

To see more options you can use with configure, type

@example
./configure --help
@end example

Look particularly at the end of the list that configure gives, as these 
options are specific to GNUstep. For instance, if you installed the tiff
library in other than a normal directory, you can use the 
@samp{--with-tiff-include} option to tell configure where it is.

With the various GNUstep libraries you can use the various
switches, shared and debug. As in ``make shared=no debug=yes'' (Make sure
you use the same switches for every package you compile, and also when
you install).

@menu
* Alternate Libraries::         
* Cross-Compiling::             
* Flat Structure::              
@end menu

@node Alternate Libraries, Cross-Compiling, Configuration, Configuration
@subsection Alternate Library Setup

You can specify compilation of alternate libraries by using the
--with-library-combo option. You need to have these libraries unpacked in a
subdirectory under the gstep directory, then you can say

@example
./configure --with-library-combo=gnu-gnu-gnu-xdps
@end example

to compile with the xdps library rather than the default xgps backend.  
IMPORTANT: The xdps backend is still experimental. Do not use it unless
you are willing to deal with PostScript problems and other bugs.

@node Cross-Compiling, Flat Structure, Alternate Libraries, Configuration
@subsection Configuring the GNUstep makefile package for a cross-compile target

By default when you run configure, it assumes that you want to create
executables for the same host that you are compiling on; however, the
GNUstep makefile package has been designed to support cross-compiling
just as easily as normal compiling.  In order to add a cross-compile
target to the GNUstep makefile package, you must rerun configure for
that target and reinstall the makefile package.  By rerunning
configure, the appropriate target settings are determined, and
reinstalling the makefile package installs the appropriate files for
that target.  The target parameter is used to specify the target
platform for cross-compiling:

@example
./configure --target=i386-mingw32
make install
@end example

Note that configuring and installing for a cross-compile target does
not eliminate or overwrite the files for any other targets that you
may have configured.  So if you wish to setup the GNUstep makefile
package for multiple targets then just perform the above steps
multiple times.

@example
./configure --target=i386-mingw32
make install
./configure --target=sparc-solaris2.5
make install
./configure --target=alpha-linux-gnu
make install
@end example

@node Flat Structure,  , Cross-Compiling, Configuration
@subsection Configuring the GNUstep makefile package for a flattened structure

On systems where you know you are only interested in supporting a single
operating system, cpu type, and library combination, it's possible to
configure GNUstep to use a 'flattened' directory structure.
You do this by supplying the '--enable-flattened' argument to configure.

In a flattened structure, files are stotred at the top-level rather than
in a @code{$(GNUSTEP_CPU)/$(GNUSTEP_OS)/$(LIBRARY_COMBO)} subdirectory.

You lose a lot of versatility with this layout, but it's simpler (less
intimidating) for naive users to handle.

@node Installation, Setup, Configuration, Top
@section Installation

After you configure the GNUstep makefile package, then you need to
compile the programs that come with the package.  Currently there is
only a single C program which needs to be compiled; all of the other
files are either shell scripts or makefile fragments, so you can
compile and install the makefile package in one step with:

@example
make install
@end example

After you have installed the GNUstep makefile package, there is still
some minor administration to be performed.  Based upon whether you are
setting up the GNUstep environment for a single user or all users on
your system, perform the appropriate step below.

@node Setup,  , Installation, Top
@section Setting up the GNUstep

@menu
* Multi-User::                  
* Single-User::                 
@end menu

@node Multi-User, Single-User, Setup, Setup
@subsection Setting up the GNUstep environment for all users

The GNUstep environment and thus usage of the makefile package is based
almost solely upon the GNUSTEP_SYSTEM_ROOT environment variable.  So
essentially the setup involved is to make sure that the variable is
defined for all users.  The GNUstep.sh file within the makefile package
contains all of the environment variable settings required, so you want
to call that shell.  Some systems, like GNU/Linux have an
@file{/etc/profile.d} directory where scripts can be executed
automatically. Just copy GNUstep.sh to this directory for it to
work. For other UNIX systems, the easiest way to do that is to modify
the system rc.local file which is executed upon system startup; add
lines similar to these:

@example
# Setup for the GNUstep environment
. /usr/GNUstep/System/Makefiles/GNUstep.sh
@end example

This will source in the GNUstep.sh file and set the environment
variables; thus making them available for all users. Before executing
this script, you can setup a default path for searching for tools
and apps by defining the variable GNUSTEP_PATHPREFIX_LIST (and exporting
it). By defualt, it's set to

@example
$GNUSTEP_USER_ROOT:$GNUSTEP_LOCAL_ROOT:$GNUSTEP_SYSTEM_ROOT
@end example

which might look something like this:

@example
~/GNUstep:/usr/GNUstep/Local:/usr/GNUstep/System
@end example

when all is done.

@node Single-User,  , Multi-User, Setup
@subsection Setting up the GNUstep environment for a single user

The GNUstep environment and thus usage of the makefile package is
based almost solely upon the GNUSTEP_SYSTEM_ROOT environment variable.
So essentially the setup involved is to make sure that the variable is
defined for the user.  The GNUstep.sh file within the makefile package
contains all of the environment variable settings required, so you
want to call that shell when the user logs in to the system.  Most
shells have some file that you read upon login, for example the BASH
shell reads the .bash_profile file in the user's home directory.  So
you can add the following lines to that file:

# Setup for the GNUstep environment
. /usr/GNUstep/Makefiles/GNUstep.sh

This will source in the GNUstep.sh file and set the environment
variables; thus making them available for the user.

@bye