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<title>Installing GCC: Final installation</title>
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2008 Free Software Foundation, Inc.
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Permission is granted to copy, distribute and/or modify this document
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</head>
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<body>
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<h1 class="settitle">Installing GCC: Final installation</h1>
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Now that GCC has been built (and optionally tested), you can install it with
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<pre class="smallexample"> cd <var>objdir</var>; make install
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</pre>
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<p>We strongly recommend to install into a target directory where there is
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no previous version of GCC present. Also, the GNAT runtime should not
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be stripped, as this would break certain features of the debugger that
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depend on this debugging information (catching Ada exceptions for
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instance).
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<p>That step completes the installation of GCC; user level binaries can
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be found in <samp><var>prefix</var><span class="file">/bin</span></samp> where <var>prefix</var> is the value
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you specified with the <samp><span class="option">--prefix</span></samp> to configure (or
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<samp><span class="file">/usr/local</span></samp> by default). (If you specified <samp><span class="option">--bindir</span></samp>,
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that directory will be used instead; otherwise, if you specified
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<samp><span class="option">--exec-prefix</span></samp>, <samp><var>exec-prefix</var><span class="file">/bin</span></samp> will be used.)
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Headers for the C++ and Java libraries are installed in
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<samp><var>prefix</var><span class="file">/include</span></samp>; libraries in <samp><var>libdir</var></samp>
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(normally <samp><var>prefix</var><span class="file">/lib</span></samp>); internal parts of the compiler in
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<samp><var>libdir</var><span class="file">/gcc</span></samp> and <samp><var>libexecdir</var><span class="file">/gcc</span></samp>; documentation
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in info format in <samp><var>infodir</var></samp> (normally
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<samp><var>prefix</var><span class="file">/info</span></samp>).
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<p>When installing cross-compilers, GCC's executables
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are not only installed into <samp><var>bindir</var></samp>, that
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is, <samp><var>exec-prefix</var><span class="file">/bin</span></samp>, but additionally into
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<samp><var>exec-prefix</var><span class="file">/</span><var>target-alias</var><span class="file">/bin</span></samp>, if that directory
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exists. Typically, such <dfn>tooldirs</dfn> hold target-specific
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binutils, including assembler and linker.
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<p>Installation into a temporary staging area or into a <samp><span class="command">chroot</span></samp>
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jail can be achieved with the command
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<pre class="smallexample"> make DESTDIR=<var>path-to-rootdir</var> install
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</pre>
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<p class="noindent">where <var>path-to-rootdir</var> is the absolute path of
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a directory relative to which all installation paths will be
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interpreted. Note that the directory specified by <code>DESTDIR</code>
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need not exist yet; it will be created if necessary.
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<p>There is a subtle point with tooldirs and <code>DESTDIR</code>:
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If you relocate a cross-compiler installation with
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e.g. ‘<samp><span class="samp">DESTDIR=</span><var>rootdir</var></samp>’, then the directory
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<samp><var>rootdir</var><span class="file">/</span><var>exec-prefix</var><span class="file">/</span><var>target-alias</var><span class="file">/bin</span></samp> will
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be filled with duplicated GCC executables only if it already exists,
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it will not be created otherwise. This is regarded as a feature,
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not as a bug, because it gives slightly more control to the packagers
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using the <code>DESTDIR</code> feature.
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<p>If you are bootstrapping a released version of GCC then please
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quickly review the build status page for your release, available from
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<a href="http://gcc.gnu.org/buildstat.html">http://gcc.gnu.org/buildstat.html</a>.
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If your system is not listed for the version of GCC that you built,
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send a note to
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<a href="mailto:gcc@gcc.gnu.org">gcc@gcc.gnu.org</a> indicating
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that you successfully built and installed GCC.
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Include the following information:
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<ul>
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<li>Output from running <samp><var>srcdir</var><span class="file">/config.guess</span></samp>. Do not send
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that file itself, just the one-line output from running it.
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<li>The output of ‘<samp><span class="samp">gcc -v</span></samp>’ for your newly installed <samp><span class="command">gcc</span></samp>.
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This tells us which version of GCC you built and the options you passed to
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configure.
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<li>Whether you enabled all languages or a subset of them. If you used a
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full distribution then this information is part of the configure
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options in the output of ‘<samp><span class="samp">gcc -v</span></samp>’, but if you downloaded the
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“core” compiler plus additional front ends then it isn't apparent
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which ones you built unless you tell us about it.
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<li>If the build was for GNU/Linux, also include:
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<ul>
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<li>The distribution name and version (e.g., Red Hat 7.1 or Debian 2.2.3);
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this information should be available from <samp><span class="file">/etc/issue</span></samp>.
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<li>The version of the Linux kernel, available from ‘<samp><span class="samp">uname --version</span></samp>’
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or ‘<samp><span class="samp">uname -a</span></samp>’.
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<li>The version of glibc you used; for RPM-based systems like Red Hat,
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Mandrake, and SuSE type ‘<samp><span class="samp">rpm -q glibc</span></samp>’ to get the glibc version,
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and on systems like Debian and Progeny use ‘<samp><span class="samp">dpkg -l libc6</span></samp>’.
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</ul>
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For other systems, you can include similar information if you think it is
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relevant.
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<li>Any other information that you think would be useful to people building
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GCC on the same configuration. The new entry in the build status list
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will include a link to the archived copy of your message.
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</ul>
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<p>We'd also like to know if the
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<a href="specific.html">host/target specific installation notes</a>
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didn't include your host/target information or if that information is
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incomplete or out of date. Send a note to
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<a href="mailto:gcc@gcc.gnu.org">gcc@gcc.gnu.org</a> detailing how the information should be changed.
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<p>If you find a bug, please report it following the
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<a href="../bugs/">bug reporting guidelines</a>.
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<p>If you want to print the GCC manuals, do ‘<samp><span class="samp">cd </span><var>objdir</var><span class="samp">; make
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dvi</span></samp>’. You will need to have <samp><span class="command">texi2dvi</span></samp> (version at least 4.7)
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and TeX installed. This creates a number of <samp><span class="file">.dvi</span></samp> files in
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subdirectories of <samp><var>objdir</var></samp>; these may be converted for
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printing with programs such as <samp><span class="command">dvips</span></samp>. Alternately, by using
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‘<samp><span class="samp">make pdf</span></samp>’ in place of ‘<samp><span class="samp">make dvi</span></samp>’, you can create documentation
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in the form of <samp><span class="file">.pdf</span></samp> files; this requires <samp><span class="command">texi2pdf</span></samp>, which
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is included with Texinfo version 4.8 and later. You can also
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<a href="http://shop.fsf.org/">buy printed manuals from the Free Software Foundation</a>, though such manuals may not be for the most
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recent version of GCC.
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<p>If you would like to generate online HTML documentation, do ‘<samp><span class="samp">cd
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</span><var>objdir</var><span class="samp">; make html</span></samp>’ and HTML will be generated for the gcc manuals in
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<samp><var>objdir</var><span class="file">/gcc/HTML</span></samp>.
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<p><hr />
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<p><a href="./index.html">Return to the GCC Installation page</a>
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<!-- ***Binaries**************************************************************** -->
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<!-- ***Specific**************************************************************** -->
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<!-- ***Old documentation****************************************************** -->
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<!-- ***GFDL******************************************************************** -->
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<!-- *************************************************************************** -->
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<!-- Part 6 The End of the Document -->
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</body></html>
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