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<h1 class="settitle" align="center">Installing GCC: Final installation</h1>


<p>Now that GCC has been built (and optionally tested), you can install it with
</p><div class="smallexample">
<pre class="smallexample">cd <var>objdir</var> &amp;&amp; make install
</pre></div>

<p>We strongly recommend to install into a target directory where there is
no previous version of GCC present.  Also, the GNAT runtime should not
be stripped, as this would break certain features of the debugger that
depend on this debugging information (catching Ada exceptions for
instance).
</p>
<p>That step completes the installation of GCC; user level binaries can
be found in <samp><var>prefix</var>/bin</samp> where <var>prefix</var> is the value
you specified with the <samp>--prefix</samp> to configure (or
<samp>/usr/local</samp> by default).  (If you specified <samp>--bindir</samp>,
that directory will be used instead; otherwise, if you specified
<samp>--exec-prefix</samp>, <samp><var>exec-prefix</var>/bin</samp> will be used.)
Headers for the C++ library are installed in
<samp><var>prefix</var>/include</samp>; libraries in <samp><var>libdir</var></samp>
(normally <samp><var>prefix</var>/lib</samp>); internal parts of the compiler in
<samp><var>libdir</var>/gcc</samp> and <samp><var>libexecdir</var>/gcc</samp>; documentation
in info format in <samp><var>infodir</var></samp> (normally
<samp><var>prefix</var>/info</samp>).
</p>
<p>When installing cross-compilers, GCC&rsquo;s executables
are not only installed into <samp><var>bindir</var></samp>, that
is, <samp><var>exec-prefix</var>/bin</samp>, but additionally into
<samp><var>exec-prefix</var>/<var>target-alias</var>/bin</samp>, if that directory
exists.  Typically, such <em>tooldirs</em> hold target-specific
binutils, including assembler and linker.
</p>
<p>Installation into a temporary staging area or into a <code>chroot</code>
jail can be achieved with the command
</p>
<div class="smallexample">
<pre class="smallexample">make DESTDIR=<var>path-to-rootdir</var> install
</pre></div>

<p>where <var>path-to-rootdir</var> is the absolute path of
a directory relative to which all installation paths will be
interpreted.  Note that the directory specified by <code>DESTDIR</code>
need not exist yet; it will be created if necessary.
</p>
<p>There is a subtle point with tooldirs and <code>DESTDIR</code>:
If you relocate a cross-compiler installation with
e.g. &lsquo;<samp>DESTDIR=<var>rootdir</var></samp>&rsquo;, then the directory
<samp><var>rootdir</var>/<var>exec-prefix</var>/<var>target-alias</var>/bin</samp> will
be filled with duplicated GCC executables only if it already exists,
it will not be created otherwise.  This is regarded as a feature,
not as a bug, because it gives slightly more control to the packagers
using the <code>DESTDIR</code> feature.
</p>
<p>You can install stripped programs and libraries with
</p>
<div class="smallexample">
<pre class="smallexample">make install-strip
</pre></div>

<p>By default, only the man pages and info-format GCC documentation
are built and installed.  If you want to generate the GCC manuals in
other formats, use commands like
</p>
<div class="smallexample">
<pre class="smallexample">make dvi
make pdf
make html
</pre></div>

<p>to build the manuals in the corresponding formats, and
</p>
<div class="smallexample">
<pre class="smallexample">make install-dvi
make install-pdf
make install-html
</pre></div>

<p>to install them.
Alternatively, there are prebuilt online versions of the manuals for
released versions of GCC on
<a href="https://gcc.gnu.org/onlinedocs/">the GCC web site</a>.
</p>
<p>If you built GCC yourself we would like to know if the
<a href="specific.html">host/target specific installation notes</a>
didn&rsquo;t include your host/target information or if that information is
incomplete or out of date.  Send a note to
<a href="mailto:gcc (a] gcc.gnu.org">gcc (a] gcc.gnu.org</a> detailing how the information should be changed.
</p>
<p>If you find a bug, please report it following the
<a href="../bugs/">bug reporting guidelines</a>.
</p>
<hr />
<p>
<p><a href="./index.html">Return to the GCC Installation page</a>
</p>


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