311 lines
13 KiB
HTML
311 lines
13 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
|
|
<html>
|
|
<!-- Copyright (C) 1988-2016 Free Software Foundation, Inc.
|
|
|
|
Permission is granted to copy, distribute and/or modify this document
|
|
under the terms of the GNU Free Documentation License, Version 1.3 or
|
|
any later version published by the Free Software Foundation; with the
|
|
Invariant Sections being "Funding Free Software", the Front-Cover
|
|
Texts being (a) (see below), and with the Back-Cover Texts being (b)
|
|
(see below). A copy of the license is included in the section entitled
|
|
"GNU Free Documentation License".
|
|
|
|
(a) The FSF's Front-Cover Text is:
|
|
|
|
A GNU Manual
|
|
|
|
(b) The FSF's Back-Cover Text is:
|
|
|
|
You have freedom to copy and modify this GNU Manual, like GNU
|
|
software. Copies published by the Free Software Foundation raise
|
|
funds for GNU development. -->
|
|
<!-- Created by GNU Texinfo 5.2, http://www.gnu.org/software/texinfo/ -->
|
|
<head>
|
|
<title>GNU Compiler Collection (GCC) Internals: Makefile</title>
|
|
|
|
<meta name="description" content="GNU Compiler Collection (GCC) Internals: Makefile">
|
|
<meta name="keywords" content="GNU Compiler Collection (GCC) Internals: Makefile">
|
|
<meta name="resource-type" content="document">
|
|
<meta name="distribution" content="global">
|
|
<meta name="Generator" content="makeinfo">
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
|
|
<link href="index.html#Top" rel="start" title="Top">
|
|
<link href="Option-Index.html#Option-Index" rel="index" title="Option Index">
|
|
<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
|
|
<link href="gcc-Directory.html#gcc-Directory" rel="up" title="gcc Directory">
|
|
<link href="Library-Files.html#Library-Files" rel="next" title="Library Files">
|
|
<link href="Build.html#Build" rel="prev" title="Build">
|
|
<style type="text/css">
|
|
<!--
|
|
a.summary-letter {text-decoration: none}
|
|
blockquote.smallquotation {font-size: smaller}
|
|
div.display {margin-left: 3.2em}
|
|
div.example {margin-left: 3.2em}
|
|
div.indentedblock {margin-left: 3.2em}
|
|
div.lisp {margin-left: 3.2em}
|
|
div.smalldisplay {margin-left: 3.2em}
|
|
div.smallexample {margin-left: 3.2em}
|
|
div.smallindentedblock {margin-left: 3.2em; font-size: smaller}
|
|
div.smalllisp {margin-left: 3.2em}
|
|
kbd {font-style:oblique}
|
|
pre.display {font-family: inherit}
|
|
pre.format {font-family: inherit}
|
|
pre.menu-comment {font-family: serif}
|
|
pre.menu-preformatted {font-family: serif}
|
|
pre.smalldisplay {font-family: inherit; font-size: smaller}
|
|
pre.smallexample {font-size: smaller}
|
|
pre.smallformat {font-family: inherit; font-size: smaller}
|
|
pre.smalllisp {font-size: smaller}
|
|
span.nocodebreak {white-space:nowrap}
|
|
span.nolinebreak {white-space:nowrap}
|
|
span.roman {font-family:serif; font-weight:normal}
|
|
span.sansserif {font-family:sans-serif; font-weight:normal}
|
|
ul.no-bullet {list-style: none}
|
|
-->
|
|
</style>
|
|
|
|
|
|
</head>
|
|
|
|
<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
|
|
<a name="Makefile"></a>
|
|
<div class="header">
|
|
<p>
|
|
Next: <a href="Library-Files.html#Library-Files" accesskey="n" rel="next">Library Files</a>, Previous: <a href="Build.html#Build" accesskey="p" rel="prev">Build</a>, Up: <a href="gcc-Directory.html#gcc-Directory" accesskey="u" rel="up">gcc Directory</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p>
|
|
</div>
|
|
<hr>
|
|
<a name="Makefile-Targets"></a>
|
|
<h4 class="subsection">6.3.4 Makefile Targets</h4>
|
|
<a name="index-makefile-targets"></a>
|
|
<a name="index-targets_002c-makefile"></a>
|
|
|
|
<p>These targets are available from the ‘<samp>gcc</samp>’ directory:
|
|
</p>
|
|
<dl compact="compact">
|
|
<dt><code>all</code></dt>
|
|
<dd><p>This is the default target. Depending on what your build/host/target
|
|
configuration is, it coordinates all the things that need to be built.
|
|
</p>
|
|
</dd>
|
|
<dt><code>doc</code></dt>
|
|
<dd><p>Produce info-formatted documentation and man pages. Essentially it
|
|
calls ‘<samp>make man</samp>’ and ‘<samp>make info</samp>’.
|
|
</p>
|
|
</dd>
|
|
<dt><code>dvi</code></dt>
|
|
<dd><p>Produce DVI-formatted documentation.
|
|
</p>
|
|
</dd>
|
|
<dt><code>pdf</code></dt>
|
|
<dd><p>Produce PDF-formatted documentation.
|
|
</p>
|
|
</dd>
|
|
<dt><code>html</code></dt>
|
|
<dd><p>Produce HTML-formatted documentation.
|
|
</p>
|
|
</dd>
|
|
<dt><code>man</code></dt>
|
|
<dd><p>Generate man pages.
|
|
</p>
|
|
</dd>
|
|
<dt><code>info</code></dt>
|
|
<dd><p>Generate info-formatted pages.
|
|
</p>
|
|
</dd>
|
|
<dt><code>mostlyclean</code></dt>
|
|
<dd><p>Delete the files made while building the compiler.
|
|
</p>
|
|
</dd>
|
|
<dt><code>clean</code></dt>
|
|
<dd><p>That, and all the other files built by ‘<samp>make all</samp>’.
|
|
</p>
|
|
</dd>
|
|
<dt><code>distclean</code></dt>
|
|
<dd><p>That, and all the files created by <code>configure</code>.
|
|
</p>
|
|
</dd>
|
|
<dt><code>maintainer-clean</code></dt>
|
|
<dd><p>Distclean plus any file that can be generated from other files. Note
|
|
that additional tools may be required beyond what is normally needed to
|
|
build GCC.
|
|
</p>
|
|
</dd>
|
|
<dt><code>srcextra</code></dt>
|
|
<dd><p>Generates files in the source directory that are not version-controlled but
|
|
should go into a release tarball.
|
|
</p>
|
|
</dd>
|
|
<dt><code>srcinfo</code></dt>
|
|
<dt><code>srcman</code></dt>
|
|
<dd><p>Copies the info-formatted and manpage documentation into the source
|
|
directory usually for the purpose of generating a release tarball.
|
|
</p>
|
|
</dd>
|
|
<dt><code>install</code></dt>
|
|
<dd><p>Installs GCC.
|
|
</p>
|
|
</dd>
|
|
<dt><code>uninstall</code></dt>
|
|
<dd><p>Deletes installed files, though this is not supported.
|
|
</p>
|
|
</dd>
|
|
<dt><code>check</code></dt>
|
|
<dd><p>Run the testsuite. This creates a <samp>testsuite</samp> subdirectory that
|
|
has various <samp>.sum</samp> and <samp>.log</samp> files containing the results of
|
|
the testing. You can run subsets with, for example, ‘<samp>make check-gcc</samp>’.
|
|
You can specify specific tests by setting <code>RUNTESTFLAGS</code> to be the name
|
|
of the <samp>.exp</samp> file, optionally followed by (for some tests) an equals
|
|
and a file wildcard, like:
|
|
</p>
|
|
<div class="smallexample">
|
|
<pre class="smallexample">make check-gcc RUNTESTFLAGS="execute.exp=19980413-*"
|
|
</pre></div>
|
|
|
|
<p>Note that running the testsuite may require additional tools be
|
|
installed, such as Tcl or DejaGnu.
|
|
</p></dd>
|
|
</dl>
|
|
|
|
<p>The toplevel tree from which you start GCC compilation is not
|
|
the GCC directory, but rather a complex Makefile that coordinates
|
|
the various steps of the build, including bootstrapping the compiler
|
|
and using the new compiler to build target libraries.
|
|
</p>
|
|
<p>When GCC is configured for a native configuration, the default action
|
|
for <code>make</code> is to do a full three-stage bootstrap. This means
|
|
that GCC is built three times—once with the native compiler, once with
|
|
the native-built compiler it just built, and once with the compiler it
|
|
built the second time. In theory, the last two should produce the same
|
|
results, which ‘<samp>make compare</samp>’ can check. Each stage is configured
|
|
separately and compiled into a separate directory, to minimize problems
|
|
due to ABI incompatibilities between the native compiler and GCC.
|
|
</p>
|
|
<p>If you do a change, rebuilding will also start from the first stage
|
|
and “bubble” up the change through the three stages. Each stage
|
|
is taken from its build directory (if it had been built previously),
|
|
rebuilt, and copied to its subdirectory. This will allow you to, for
|
|
example, continue a bootstrap after fixing a bug which causes the
|
|
stage2 build to crash. It does not provide as good coverage of the
|
|
compiler as bootstrapping from scratch, but it ensures that the new
|
|
code is syntactically correct (e.g., that you did not use GCC extensions
|
|
by mistake), and avoids spurious bootstrap comparison
|
|
failures<a name="DOCF1" href="#FOOT1"><sup>1</sup></a>.
|
|
</p>
|
|
<p>Other targets available from the top level include:
|
|
</p>
|
|
<dl compact="compact">
|
|
<dt><code>bootstrap-lean</code></dt>
|
|
<dd><p>Like <code>bootstrap</code>, except that the various stages are removed once
|
|
they’re no longer needed. This saves disk space.
|
|
</p>
|
|
</dd>
|
|
<dt><code>bootstrap2</code></dt>
|
|
<dt><code>bootstrap2-lean</code></dt>
|
|
<dd><p>Performs only the first two stages of bootstrap. Unlike a three-stage
|
|
bootstrap, this does not perform a comparison to test that the compiler
|
|
is running properly. Note that the disk space required by a “lean”
|
|
bootstrap is approximately independent of the number of stages.
|
|
</p>
|
|
</dd>
|
|
<dt><code>stage<var>N</var>-bubble (<var>N</var> = 1…4, profile, feedback)</code></dt>
|
|
<dd><p>Rebuild all the stages up to <var>N</var>, with the appropriate flags,
|
|
“bubbling” the changes as described above.
|
|
</p>
|
|
</dd>
|
|
<dt><code>all-stage<var>N</var> (<var>N</var> = 1…4, profile, feedback)</code></dt>
|
|
<dd><p>Assuming that stage <var>N</var> has already been built, rebuild it with the
|
|
appropriate flags. This is rarely needed.
|
|
</p>
|
|
</dd>
|
|
<dt><code>cleanstrap</code></dt>
|
|
<dd><p>Remove everything (‘<samp>make clean</samp>’) and rebuilds (‘<samp>make bootstrap</samp>’).
|
|
</p>
|
|
</dd>
|
|
<dt><code>compare</code></dt>
|
|
<dd><p>Compares the results of stages 2 and 3. This ensures that the compiler
|
|
is running properly, since it should produce the same object files
|
|
regardless of how it itself was compiled.
|
|
</p>
|
|
</dd>
|
|
<dt><code>profiledbootstrap</code></dt>
|
|
<dd><p>Builds a compiler with profiling feedback information. In this case,
|
|
the second and third stages are named ‘<samp>profile</samp>’ and ‘<samp>feedback</samp>’,
|
|
respectively. For more information, see
|
|
<a href="../gccinstall/Building.html#Building">Building with profile feedback</a> in <cite>Installing GCC</cite>.
|
|
</p>
|
|
</dd>
|
|
<dt><code>restrap</code></dt>
|
|
<dd><p>Restart a bootstrap, so that everything that was not built with
|
|
the system compiler is rebuilt.
|
|
</p>
|
|
</dd>
|
|
<dt><code>stage<var>N</var>-start (<var>N</var> = 1…4, profile, feedback)</code></dt>
|
|
<dd><p>For each package that is bootstrapped, rename directories so that,
|
|
for example, <samp>gcc</samp> points to the stage<var>N</var> GCC, compiled
|
|
with the stage<var>N-1</var> GCC<a name="DOCF2" href="#FOOT2"><sup>2</sup></a>.
|
|
</p>
|
|
<p>You will invoke this target if you need to test or debug the
|
|
stage<var>N</var> GCC. If you only need to execute GCC (but you need
|
|
not run ‘<samp>make</samp>’ either to rebuild it or to run test suites),
|
|
you should be able to work directly in the <samp>stage<var>N</var>-gcc</samp>
|
|
directory. This makes it easier to debug multiple stages in
|
|
parallel.
|
|
</p>
|
|
</dd>
|
|
<dt><code>stage</code></dt>
|
|
<dd><p>For each package that is bootstrapped, relocate its build directory
|
|
to indicate its stage. For example, if the <samp>gcc</samp> directory
|
|
points to the stage2 GCC, after invoking this target it will be
|
|
renamed to <samp>stage2-gcc</samp>.
|
|
</p>
|
|
</dd>
|
|
</dl>
|
|
|
|
<p>If you wish to use non-default GCC flags when compiling the stage2 and
|
|
stage3 compilers, set <code>BOOT_CFLAGS</code> on the command line when doing
|
|
‘<samp>make</samp>’.
|
|
</p>
|
|
<p>Usually, the first stage only builds the languages that the compiler
|
|
is written in: typically, C and maybe Ada. If you are debugging a
|
|
miscompilation of a different stage2 front-end (for example, of the
|
|
Fortran front-end), you may want to have front-ends for other languages
|
|
in the first stage as well. To do so, set <code>STAGE1_LANGUAGES</code>
|
|
on the command line when doing ‘<samp>make</samp>’.
|
|
</p>
|
|
<p>For example, in the aforementioned scenario of debugging a Fortran
|
|
front-end miscompilation caused by the stage1 compiler, you may need a
|
|
command like
|
|
</p>
|
|
<div class="example">
|
|
<pre class="example">make stage2-bubble STAGE1_LANGUAGES=c,fortran
|
|
</pre></div>
|
|
|
|
<p>Alternatively, you can use per-language targets to build and test
|
|
languages that are not enabled by default in stage1. For example,
|
|
<code>make f951</code> will build a Fortran compiler even in the stage1
|
|
build directory.
|
|
</p>
|
|
|
|
<div class="footnote">
|
|
<hr>
|
|
<h4 class="footnotes-heading">Footnotes</h4>
|
|
|
|
<h3><a name="FOOT1" href="#DOCF1">(1)</a></h3>
|
|
<p>Except if the compiler was buggy and miscompiled
|
|
some of the files that were not modified. In this case, it’s best
|
|
to use <code>make restrap</code>.</p>
|
|
<h3><a name="FOOT2" href="#DOCF2">(2)</a></h3>
|
|
<p>Customarily, the system compiler
|
|
is also termed the <samp>stage0</samp> GCC.</p>
|
|
</div>
|
|
<hr>
|
|
<div class="header">
|
|
<p>
|
|
Next: <a href="Library-Files.html#Library-Files" accesskey="n" rel="next">Library Files</a>, Previous: <a href="Build.html#Build" accesskey="p" rel="prev">Build</a>, Up: <a href="gcc-Directory.html#gcc-Directory" accesskey="u" rel="up">gcc Directory</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p>
|
|
</div>
|
|
|
|
|
|
|
|
</body>
|
|
</html>
|