525 lines
		
	
	
	
		
			23 KiB
		
	
	
	
		
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			525 lines
		
	
	
	
		
			23 KiB
		
	
	
	
		
			HTML
		
	
	
	
	
	
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								            Karl Berry  <karl@freefriends.org>
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								            Olaf Bachmann <obachman@mathematik.uni-kl.de>
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								            and many others.
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								<TITLE>Debugging with GDB: Installing GDB</TITLE>
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								<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_30.html#SEC684"> < </A>]</TD>
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								<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_toc.html#SEC_Contents">Contents</A>]</TD>
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								<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_38.html#SEC764">Index</A>]</TD>
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								<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_abt.html#SEC_About"> ? </A>]</TD>
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								</TR></TABLE>
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								<H1> B. Installing GDB </H1>
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								<!--docid::SEC685::-->
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								<P>
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								<BLOCKQUOTE><TABLE BORDER=0 CELLSPACING=0> 
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								<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="gdb_31.html#SEC686">B.1 Requirements for Building GDB</A></TD><TD>  </TD><TD ALIGN="left" VALIGN="TOP">Requirements for building GDB</TD></TR>
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								<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="gdb_31.html#SEC689">B.2 Invoking the GDB <TT>`configure'</TT> Script</A></TD><TD>  </TD><TD ALIGN="left" VALIGN="TOP">Invoking the GDB <TT>`configure'</TT> script</TD></TR>
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								<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="gdb_31.html#SEC690">B.3 Compiling GDB in Another Directory</A></TD><TD>  </TD><TD ALIGN="left" VALIGN="TOP">Compiling GDB in another directory</TD></TR>
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								<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="gdb_31.html#SEC691">B.4 Specifying Names for Hosts and Targets</A></TD><TD>  </TD><TD ALIGN="left" VALIGN="TOP">Specifying names for hosts and targets</TD></TR>
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								<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="gdb_31.html#SEC692">B.5 <TT>`configure'</TT> Options</A></TD><TD>  </TD><TD ALIGN="left" VALIGN="TOP">Summary of options for configure</TD></TR>
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								</TABLE></BLOCKQUOTE>
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								<A NAME="Requirements"></A>
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								<A NAME="SEC686"></A>
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								<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_toc.html#SEC_Contents">Contents</A>]</TD>
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								<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_38.html#SEC764">Index</A>]</TD>
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								<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_abt.html#SEC_About"> ? </A>]</TD>
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								</TR></TABLE>
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								<H2> B.1 Requirements for Building GDB </H2>
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								<!--docid::SEC686::-->
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								<P>
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								Building GDB requires various tools and packages to be available.
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								Other packages will be used only if they are found.
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								</P><P>
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								<A NAME="SEC687"></A>
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								<H2> Tools/Packages Necessary for Building GDB </H2>
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								<!--docid::SEC687::-->
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								<DL COMPACT>
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								<DT>ISO C90 compiler
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								<DD>GDB is written in ISO C90.  It should be buildable with any
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								working C90 compiler, e.g. GCC.
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								<P>
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								</DL>
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								<P>
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								<A NAME="SEC688"></A>
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								<H2> Tools/Packages Optional for Building GDB </H2>
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								<!--docid::SEC688::-->
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								<DL COMPACT>
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								<DT>Expat
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								<DD><A NAME="Expat"></A>
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								GDB can use the Expat XML parsing library.  This library may be
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								included with your operating system distribution; if it is not, you
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								can get the latest version from <A HREF="http://expat.sourceforge.net">http://expat.sourceforge.net</A>.
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								The <TT>`configure'</TT> script will search for this library in several
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								standard locations; if it is installed in an unusual path, you can
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								use the <SAMP>`--with-libexpat-prefix'</SAMP> option to specify its location.
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								<P>
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								Expat is used for:
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								</P><P>
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								<UL>
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								<LI>
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								Remote protocol memory maps (see section <A HREF="gdb_33.html#SEC737">D.12 Memory Map Format</A>)
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								<LI>
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								Target descriptions (see section <A HREF="gdb_35.html#SEC745">F. Target Descriptions</A>)
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								<LI>
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								Remote shared library lists (see section <A HREF="gdb_33.html#SEC736">D.11 Library List Format</A>)
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								<LI>
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								MS-Windows shared libraries (see  <A HREF="gdb_16.html#Shared Libraries">Shared Libraries</A>)
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								</UL>
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								<P>
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								</DL>
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								<P>
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								<A NAME="Running Configure"></A>
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								<HR SIZE="6">
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								<A NAME="SEC689"></A>
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								<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
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								<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_31.html#SEC686"> < </A>]</TD>
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								<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_31.html#SEC690"> > </A>]</TD>
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								<TD VALIGN="MIDDLE" ALIGN="LEFT">   <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_31.html#SEC690"> << </A>]</TD>
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								<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_31.html#SEC685"> Up </A>]</TD>
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								<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_32.html#SEC693"> >> </A>]</TD>
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								<TD VALIGN="MIDDLE" ALIGN="LEFT">   <TD VALIGN="MIDDLE" ALIGN="LEFT">   <TD VALIGN="MIDDLE" ALIGN="LEFT">   <TD VALIGN="MIDDLE" ALIGN="LEFT">   <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb.html#SEC_Top">Top</A>]</TD>
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								<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_toc.html#SEC_Contents">Contents</A>]</TD>
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								<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_38.html#SEC764">Index</A>]</TD>
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								<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_abt.html#SEC_About"> ? </A>]</TD>
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								</TR></TABLE>
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								<H2> B.2 Invoking the GDB <TT>`configure'</TT> Script </H2>
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								<!--docid::SEC689::-->
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								GDB comes with a <TT>`configure'</TT> script that automates the process
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								of preparing GDB for installation; you can then use <CODE>make</CODE> to
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								build the <CODE>gdb</CODE> program.
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								<P>
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								The GDB distribution includes all the source code you need for
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								GDB in a single directory, whose name is usually composed by
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								appending the version number to <SAMP>`gdb'</SAMP>.
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								</P><P>
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								For example, the GDB version 6.8 distribution is in the
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								<TT>`gdb-6.8'</TT> directory.  That directory contains:
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								</P><P>
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								<DL COMPACT>
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								<DT><CODE>gdb-6.8/configure (and supporting files)</CODE>
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								<DD>script for configuring GDB and all its supporting libraries
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								<P>
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								<DT><CODE>gdb-6.8/gdb</CODE>
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								<DD>the source specific to GDB itself
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								<P>
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								<DT><CODE>gdb-6.8/bfd</CODE>
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								<DD>source for the Binary File Descriptor library
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								<P>
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								<DT><CODE>gdb-6.8/include</CODE>
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								<DD>GNU include files
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								<P>
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								<DT><CODE>gdb-6.8/libiberty</CODE>
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								<DD>source for the <SAMP>`-liberty'</SAMP> free software library
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								<P>
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								<DT><CODE>gdb-6.8/opcodes</CODE>
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								<DD>source for the library of opcode tables and disassemblers
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								<P>
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								<DT><CODE>gdb-6.8/readline</CODE>
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								<DD>source for the GNU command-line interface
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								<P>
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								<DT><CODE>gdb-6.8/glob</CODE>
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								<DD>source for the GNU filename pattern-matching subroutine
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								<P>
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								<DT><CODE>gdb-6.8/mmalloc</CODE>
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								<DD>source for the GNU memory-mapped malloc package
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								</DL>
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								<P>
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								The simplest way to configure and build GDB is to run <TT>`configure'</TT>
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								from the <TT>`gdb-<VAR>version-number</VAR>'</TT> source directory, which in
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								this example is the <TT>`gdb-6.8'</TT> directory.
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								</P><P>
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								First switch to the <TT>`gdb-<VAR>version-number</VAR>'</TT> source directory
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								if you are not already in it; then run <TT>`configure'</TT>.  Pass the
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								identifier for the platform on which GDB will run as an
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								argument.
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								</P><P>
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								For example:
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								</P><P>
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								<TABLE><tr><td> </td><td class=smallexample><FONT SIZE=-1><pre>cd gdb-6.8
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								./configure <VAR>host</VAR>
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								make
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								</FONT></pre></td></tr></table></P><P>
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								where <VAR>host</VAR> is an identifier such as <SAMP>`sun4'</SAMP> or
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								<SAMP>`decstation'</SAMP>, that identifies the platform where GDB will run.
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								(You can often leave off <VAR>host</VAR>; <TT>`configure'</TT> tries to guess the
							 | 
						||
| 
								 | 
							
								correct value by examining your system.)
							 | 
						||
| 
								 | 
							
								</P><P>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								Running <SAMP>`configure <VAR>host</VAR>'</SAMP> and then running <CODE>make</CODE> builds the
							 | 
						||
| 
								 | 
							
								<TT>`bfd'</TT>, <TT>`readline'</TT>, <TT>`mmalloc'</TT>, and <TT>`libiberty'</TT>
							 | 
						||
| 
								 | 
							
								libraries, then <CODE>gdb</CODE> itself.  The configured source files, and the
							 | 
						||
| 
								 | 
							
								binaries, are left in the corresponding source directories.
							 | 
						||
| 
								 | 
							
								</P><P>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								<TT>`configure'</TT> is a Bourne-shell (<CODE>/bin/sh</CODE>) script; if your
							 | 
						||
| 
								 | 
							
								system does not recognize this automatically when you run a different
							 | 
						||
| 
								 | 
							
								shell, you may need to run <CODE>sh</CODE> on it explicitly:
							 | 
						||
| 
								 | 
							
								</P><P>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								<TABLE><tr><td> </td><td class=smallexample><FONT SIZE=-1><pre>sh configure <VAR>host</VAR>
							 | 
						||
| 
								 | 
							
								</FONT></pre></td></tr></table></P><P>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								If you run <TT>`configure'</TT> from a directory that contains source
							 | 
						||
| 
								 | 
							
								directories for multiple libraries or programs, such as the
							 | 
						||
| 
								 | 
							
								<TT>`gdb-6.8'</TT> source directory for version 6.8,
							 | 
						||
| 
								 | 
							
								<TT>`configure'</TT>
							 | 
						||
| 
								 | 
							
								creates configuration files for every directory level underneath (unless
							 | 
						||
| 
								 | 
							
								you tell it not to, with the <SAMP>`--norecursion'</SAMP> option).
							 | 
						||
| 
								 | 
							
								</P><P>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								You should run the <TT>`configure'</TT> script from the top directory in the
							 | 
						||
| 
								 | 
							
								source tree, the <TT>`gdb-<VAR>version-number</VAR>'</TT> directory.  If you run
							 | 
						||
| 
								 | 
							
								<TT>`configure'</TT> from one of the subdirectories, you will configure only
							 | 
						||
| 
								 | 
							
								that subdirectory.  That is usually not what you want.  In particular,
							 | 
						||
| 
								 | 
							
								if you run the first <TT>`configure'</TT> from the <TT>`gdb'</TT> subdirectory
							 | 
						||
| 
								 | 
							
								of the <TT>`gdb-<VAR>version-number</VAR>'</TT> directory, you will omit the
							 | 
						||
| 
								 | 
							
								configuration of <TT>`bfd'</TT>, <TT>`readline'</TT>, and other sibling
							 | 
						||
| 
								 | 
							
								directories of the <TT>`gdb'</TT> subdirectory.  This leads to build errors
							 | 
						||
| 
								 | 
							
								about missing include files such as <TT>`bfd/bfd.h'</TT>.
							 | 
						||
| 
								 | 
							
								</P><P>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								You can install <CODE>gdb</CODE> anywhere; it has no hardwired paths.
							 | 
						||
| 
								 | 
							
								However, you should make sure that the shell on your path (named by
							 | 
						||
| 
								 | 
							
								the <SAMP>`SHELL'</SAMP> environment variable) is publicly readable.  Remember
							 | 
						||
| 
								 | 
							
								that GDB uses the shell to start your program--some systems refuse to
							 | 
						||
| 
								 | 
							
								let GDB debug child processes whose programs are not readable.
							 | 
						||
| 
								 | 
							
								</P><P>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								<A NAME="Separate Objdir"></A>
							 | 
						||
| 
								 | 
							
								<HR SIZE="6">
							 | 
						||
| 
								 | 
							
								<A NAME="SEC690"></A>
							 | 
						||
| 
								 | 
							
								<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
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								 | 
							
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								 | 
							
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							 | 
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								 | 
							
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								 | 
							
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								 | 
							
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							 | 
						||
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								 | 
							
								<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_toc.html#SEC_Contents">Contents</A>]</TD>
							 | 
						||
| 
								 | 
							
								<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_38.html#SEC764">Index</A>]</TD>
							 | 
						||
| 
								 | 
							
								<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_abt.html#SEC_About"> ? </A>]</TD>
							 | 
						||
| 
								 | 
							
								</TR></TABLE>
							 | 
						||
| 
								 | 
							
								<H2> B.3 Compiling GDB in Another Directory </H2>
							 | 
						||
| 
								 | 
							
								<!--docid::SEC690::-->
							 | 
						||
| 
								 | 
							
								<P>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								If you want to run GDB versions for several host or target machines,
							 | 
						||
| 
								 | 
							
								you need a different <CODE>gdb</CODE> compiled for each combination of
							 | 
						||
| 
								 | 
							
								host and target.  <TT>`configure'</TT> is designed to make this easy by
							 | 
						||
| 
								 | 
							
								allowing you to generate each configuration in a separate subdirectory,
							 | 
						||
| 
								 | 
							
								rather than in the source directory.  If your <CODE>make</CODE> program
							 | 
						||
| 
								 | 
							
								handles the <SAMP>`VPATH'</SAMP> feature (GNU <CODE>make</CODE> does), running
							 | 
						||
| 
								 | 
							
								<CODE>make</CODE> in each of these directories builds the <CODE>gdb</CODE>
							 | 
						||
| 
								 | 
							
								program specified there.
							 | 
						||
| 
								 | 
							
								</P><P>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								To build <CODE>gdb</CODE> in a separate directory, run <TT>`configure'</TT>
							 | 
						||
| 
								 | 
							
								with the <SAMP>`--srcdir'</SAMP> option to specify where to find the source.
							 | 
						||
| 
								 | 
							
								(You also need to specify a path to find <TT>`configure'</TT>
							 | 
						||
| 
								 | 
							
								itself from your working directory.  If the path to <TT>`configure'</TT>
							 | 
						||
| 
								 | 
							
								would be the same as the argument to <SAMP>`--srcdir'</SAMP>, you can leave out
							 | 
						||
| 
								 | 
							
								the <SAMP>`--srcdir'</SAMP> option; it is assumed.)
							 | 
						||
| 
								 | 
							
								</P><P>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								For example, with version 6.8, you can build GDB in a
							 | 
						||
| 
								 | 
							
								separate directory for a Sun 4 like this:
							 | 
						||
| 
								 | 
							
								</P><P>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								<TABLE><tr><td> </td><td class=smallexample><FONT SIZE=-1><pre>cd gdb-6.8
							 | 
						||
| 
								 | 
							
								mkdir ../gdb-sun4
							 | 
						||
| 
								 | 
							
								cd ../gdb-sun4
							 | 
						||
| 
								 | 
							
								../gdb-6.8/configure sun4
							 | 
						||
| 
								 | 
							
								make
							 | 
						||
| 
								 | 
							
								</FONT></pre></td></tr></table></P><P>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								When <TT>`configure'</TT> builds a configuration using a remote source
							 | 
						||
| 
								 | 
							
								directory, it creates a tree for the binaries with the same structure
							 | 
						||
| 
								 | 
							
								(and using the same names) as the tree under the source directory.  In
							 | 
						||
| 
								 | 
							
								the example, you'd find the Sun 4 library <TT>`libiberty.a'</TT> in the
							 | 
						||
| 
								 | 
							
								directory <TT>`gdb-sun4/libiberty'</TT>, and GDB itself in
							 | 
						||
| 
								 | 
							
								<TT>`gdb-sun4/gdb'</TT>.
							 | 
						||
| 
								 | 
							
								</P><P>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								Make sure that your path to the <TT>`configure'</TT> script has just one
							 | 
						||
| 
								 | 
							
								instance of <TT>`gdb'</TT> in it.  If your path to <TT>`configure'</TT> looks
							 | 
						||
| 
								 | 
							
								like <TT>`../gdb-6.8/gdb/configure'</TT>, you are configuring only
							 | 
						||
| 
								 | 
							
								one subdirectory of GDB, not the whole package.  This leads to
							 | 
						||
| 
								 | 
							
								build errors about missing include files such as <TT>`bfd/bfd.h'</TT>.
							 | 
						||
| 
								 | 
							
								</P><P>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								One popular reason to build several GDB configurations in separate
							 | 
						||
| 
								 | 
							
								directories is to configure GDB for cross-compiling (where
							 | 
						||
| 
								 | 
							
								GDB runs on one machine--the <EM>host</EM>---while debugging
							 | 
						||
| 
								 | 
							
								programs that run on another machine--the <EM>target</EM>).
							 | 
						||
| 
								 | 
							
								You specify a cross-debugging target by
							 | 
						||
| 
								 | 
							
								giving the <SAMP>`--target=<VAR>target</VAR>'</SAMP> option to <TT>`configure'</TT>.
							 | 
						||
| 
								 | 
							
								</P><P>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								When you run <CODE>make</CODE> to build a program or library, you must run
							 | 
						||
| 
								 | 
							
								it in a configured directory--whatever directory you were in when you
							 | 
						||
| 
								 | 
							
								called <TT>`configure'</TT> (or one of its subdirectories).
							 | 
						||
| 
								 | 
							
								</P><P>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								The <CODE>Makefile</CODE> that <TT>`configure'</TT> generates in each source
							 | 
						||
| 
								 | 
							
								directory also runs recursively.  If you type <CODE>make</CODE> in a source
							 | 
						||
| 
								 | 
							
								directory such as <TT>`gdb-6.8'</TT> (or in a separate configured
							 | 
						||
| 
								 | 
							
								directory configured with <SAMP>`--srcdir=<VAR>dirname</VAR>/gdb-6.8'</SAMP>), you
							 | 
						||
| 
								 | 
							
								will build all the required libraries, and then build GDB.
							 | 
						||
| 
								 | 
							
								</P><P>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								When you have multiple hosts or targets configured in separate
							 | 
						||
| 
								 | 
							
								directories, you can run <CODE>make</CODE> on them in parallel (for example,
							 | 
						||
| 
								 | 
							
								if they are NFS-mounted on each of the hosts); they will not interfere
							 | 
						||
| 
								 | 
							
								with each other.
							 | 
						||
| 
								 | 
							
								</P><P>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								<A NAME="Config Names"></A>
							 | 
						||
| 
								 | 
							
								<HR SIZE="6">
							 | 
						||
| 
								 | 
							
								<A NAME="SEC691"></A>
							 | 
						||
| 
								 | 
							
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								 | 
							
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								 | 
							
								<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_toc.html#SEC_Contents">Contents</A>]</TD>
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								 | 
							
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								 | 
							
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								 | 
							
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							 | 
						||
| 
								 | 
							
								<H2> B.4 Specifying Names for Hosts and Targets </H2>
							 | 
						||
| 
								 | 
							
								<!--docid::SEC691::-->
							 | 
						||
| 
								 | 
							
								<P>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								The specifications used for hosts and targets in the <TT>`configure'</TT>
							 | 
						||
| 
								 | 
							
								script are based on a three-part naming scheme, but some short predefined
							 | 
						||
| 
								 | 
							
								aliases are also supported.  The full naming scheme encodes three pieces
							 | 
						||
| 
								 | 
							
								of information in the following pattern:
							 | 
						||
| 
								 | 
							
								</P><P>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								<TABLE><tr><td> </td><td class=smallexample><FONT SIZE=-1><pre><VAR>architecture</VAR>-<VAR>vendor</VAR>-<VAR>os</VAR>
							 | 
						||
| 
								 | 
							
								</FONT></pre></td></tr></table></P><P>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								For example, you can use the alias <CODE>sun4</CODE> as a <VAR>host</VAR> argument,
							 | 
						||
| 
								 | 
							
								or as the value for <VAR>target</VAR> in a <CODE>--target=<VAR>target</VAR></CODE>
							 | 
						||
| 
								 | 
							
								option.  The equivalent full name is <SAMP>`sparc-sun-sunos4'</SAMP>.
							 | 
						||
| 
								 | 
							
								</P><P>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								The <TT>`configure'</TT> script accompanying GDB does not provide
							 | 
						||
| 
								 | 
							
								any query facility to list all supported host and target names or
							 | 
						||
| 
								 | 
							
								aliases.  <TT>`configure'</TT> calls the Bourne shell script
							 | 
						||
| 
								 | 
							
								<CODE>config.sub</CODE> to map abbreviations to full names; you can read the
							 | 
						||
| 
								 | 
							
								script, if you wish, or you can use it to test your guesses on
							 | 
						||
| 
								 | 
							
								abbreviations--for example:
							 | 
						||
| 
								 | 
							
								</P><P>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								<TABLE><tr><td> </td><td class=smallexample><FONT SIZE=-1><pre>% sh config.sub i386-linux
							 | 
						||
| 
								 | 
							
								i386-pc-linux-gnu
							 | 
						||
| 
								 | 
							
								% sh config.sub alpha-linux
							 | 
						||
| 
								 | 
							
								alpha-unknown-linux-gnu
							 | 
						||
| 
								 | 
							
								% sh config.sub hp9k700
							 | 
						||
| 
								 | 
							
								hppa1.1-hp-hpux
							 | 
						||
| 
								 | 
							
								% sh config.sub sun4
							 | 
						||
| 
								 | 
							
								sparc-sun-sunos4.1.1
							 | 
						||
| 
								 | 
							
								% sh config.sub sun3
							 | 
						||
| 
								 | 
							
								m68k-sun-sunos4.1.1
							 | 
						||
| 
								 | 
							
								% sh config.sub i986v
							 | 
						||
| 
								 | 
							
								Invalid configuration `i986v': machine `i986v' not recognized
							 | 
						||
| 
								 | 
							
								</FONT></pre></td></tr></table></P><P>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								<CODE>config.sub</CODE> is also distributed in the GDB source
							 | 
						||
| 
								 | 
							
								directory (<TT>`gdb-6.8'</TT>, for version 6.8).
							 | 
						||
| 
								 | 
							
								</P><P>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								<A NAME="Configure Options"></A>
							 | 
						||
| 
								 | 
							
								<HR SIZE="6">
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								 | 
							
								<A NAME="SEC692"></A>
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								</TR></TABLE>
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								<H2> B.5 <TT>`configure'</TT> Options </H2>
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								<!--docid::SEC692::-->
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								<P>
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								Here is a summary of the <TT>`configure'</TT> options and arguments that
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								are most often useful for building GDB.  <TT>`configure'</TT> also has
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								several other options not listed here.  See Info file `configure.info', node `What Configure Does', for a full explanation of <TT>`configure'</TT>.
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								</P><P>
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								<TABLE><tr><td> </td><td class=smallexample><FONT SIZE=-1><pre>configure [--help]
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								          [--prefix=<VAR>dir</VAR>]
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								          [--exec-prefix=<VAR>dir</VAR>]
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								          [--srcdir=<VAR>dirname</VAR>]
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								          [--norecursion] [--rm]
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								          [--target=<VAR>target</VAR>]
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								          <VAR>host</VAR>
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								</FONT></pre></td></tr></table></P><P>
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								You may introduce options with a single <SAMP>`-'</SAMP> rather than
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								<SAMP>`--'</SAMP> if you prefer; but you may abbreviate option names if you use
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								<SAMP>`--'</SAMP>.
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								</P><P>
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								<DL COMPACT>
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								<DT><CODE>--help</CODE>
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								<DD>Display a quick summary of how to invoke <TT>`configure'</TT>.
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								<P>
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								<DT><CODE>--prefix=<VAR>dir</VAR></CODE>
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								<DD>Configure the source to install programs and files under directory
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								<TT>`<VAR>dir</VAR>'</TT>.
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								<P>
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								<DT><CODE>--exec-prefix=<VAR>dir</VAR></CODE>
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								<DD>Configure the source to install programs under directory
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								<TT>`<VAR>dir</VAR>'</TT>.
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								<P>
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								<DT><CODE>--srcdir=<VAR>dirname</VAR></CODE>
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								<DD><STRONG>Warning: using this option requires GNU <CODE>make</CODE>, or another
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								<CODE>make</CODE> that implements the <CODE>VPATH</CODE> feature.</STRONG><BR>
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								Use this option to make configurations in directories separate from the
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								GDB source directories.  Among other things, you can use this to
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								build (or maintain) several configurations simultaneously, in separate
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								directories.  <TT>`configure'</TT> writes configuration-specific files in
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								the current directory, but arranges for them to use the source in the
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								directory <VAR>dirname</VAR>.  <TT>`configure'</TT> creates directories under
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								the working directory in parallel to the source directories below
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								<VAR>dirname</VAR>.
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								<P>
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								<DT><CODE>--norecursion</CODE>
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								<DD>Configure only the directory level where <TT>`configure'</TT> is executed; do not
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								propagate configuration to subdirectories.
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								<P>
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								<DT><CODE>--target=<VAR>target</VAR></CODE>
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								<DD>Configure GDB for cross-debugging programs running on the specified
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								<VAR>target</VAR>.  Without this option, GDB is configured to debug
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								programs that run on the same machine (<VAR>host</VAR>) as GDB itself.
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								<P>
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								There is no convenient way to generate a list of all available targets.
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								</P><P>
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								<DT><CODE><VAR>host</VAR> <small>...</small></CODE>
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								<DD>Configure GDB to run on the specified <VAR>host</VAR>.
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								<P>
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								There is no convenient way to generate a list of all available hosts.
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								</DL>
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								<P>
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								There are many other options available as well, but they are generally
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								needed for special purposes only.
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								</P><P>
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								<A NAME="Maintenance Commands"></A>
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								<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_toc.html#SEC_Contents">Contents</A>]</TD>
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								<FONT SIZE="-1">
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								<address>
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								<p>Please send FSF & GNU inquiries & questions to <a
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								href="mailto:gnu@gnu.org">gnu@gnu.org</a>.  There are also <a
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								href="http://www.gnu.org/home.html#ContactInfo">other ways to
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								contact</a> the FSF.</p>
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								<p>These pages are maintained by <a
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								href="http://www.gnu.org/software/gdb/">the GDB developers</a>.</p>
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								This document was generated
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								by <I>GDB Administrator</I> on <I>March, 27  2008</I>
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								using <A HREF="http://www.mathematik.uni-kl.de/~obachman/Texi2html
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