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+<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Configure</title><meta name="generator" content="DocBook XSL Stylesheets V1.74.0" /><meta name="keywords" content=" ISO C++ , configure , options " /><meta name="keywords" content=" ISO C++ , library " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="
setup.html" title="Chapter 2. Setup" /><link rel="prev" href="setup.html" title="Chapter 2. Setup" /><link rel="next" href="make.html" title="Make" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Configure</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="setup.html">Prev</a> </td><th width="60%" align="center">Chapter 2. Setup</th><td width="20%" align="right"> <a accesskey="n" href="make.html">Next</a></td></tr></table><hr /></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.intro.setup.configure"></a>Configure</h2></div></div></div><p>
When configuring libstdc++, you'll have to configure the entire
<span class="emphasis"><em>gccsrcdir</em></span> directory. Consider using the
toplevel gcc configuration option
specify a wrapper for malloc, 'mt' for a fixed power of two allocator,
'pool' for the SGI pooled allocator or 'bitmap' for a bitmap allocator.
This option can change the library ABI. See this page for more information on allocator
- <a class="link" href="bk01pt04ch11.html#allocator.ext" title="Extension Allocators">extensions</a>
+ <a class="link" href="memory.html#allocator.ext" title="Extension Allocators">extensions</a>
</p></dd><dt><span class="term"><code class="code">--enable-cheaders=OPTION</code></span></dt><dd><p>This allows the user to define the approach taken for C header
compatibility with C++. Options are c, c_std, and c_global.
These correspond to the source directory's include/c,
linking of libpthread too, which activates locking, a large overhead
for single-thread programs. OPTION=no skips the tests completely.
The default is OPTION=no.
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