commit ae505b77cef62a4ee79dd374e75d88c223e945ed
Author: Jonathan Wakely <jwakely@redhat.com>
Date: Mon Oct 10 23:33:15 2016 +0100
Improve docs on libstdc++ source-code layout
* doc/xml/manual/appendix_contributing.xml (contrib.organization):
Replace <literallayout> with nested <variablelist> elements. Update
some more outdated text.
* doc/html/*: Regenerate.
@@ -203,105 +203,195 @@
GCC sources contains the files needed to create the GNU C++ Library.
</para>
- <literallayout class="normal">
+<para>
It has subdirectories:
+</para>
- <filename class="directory">doc</filename>
+<variablelist>
+ <varlistentry>
+ <term><filename class="directory">doc</filename></term>
+ <listitem>
Files in HTML and text format that document usage, quirks of the
implementation, and contributor checklists.
+ </listitem>
+ </varlistentry>
- <filename class="directory">include</filename>
+ <varlistentry>
+ <term><filename class="directory">include</filename></term>
+ <listitem>
All header files for the C++ library are within this directory,
modulo specific runtime-related files that are in the libsupc++
directory.
- <filename class="directory">include/std</filename>
- Files meant to be found by #include <name> directives in
- standard-conforming user programs.
+ <variablelist>
+ <varlistentry>
+ <term><filename class="directory">include/std</filename></term>
+ <listitem>
+ Files meant to be found by <code>#include <name></code> directives
+ in standard-conforming user programs.
+ </listitem>
+ </varlistentry>
- <filename class="directory">include/c</filename>
+ <varlistentry>
+ <term><filename class="directory">include/c</filename></term>
+ <listitem>
Headers intended to directly include standard C headers.
[NB: this can be enabled via <option>--enable-cheaders=c</option>]
+ </listitem>
+ </varlistentry>
- <filename class="directory">include/c_global</filename>
+ <varlistentry>
+ <term><filename class="directory">include/c_global</filename></term>
+ <listitem>
Headers intended to include standard C headers in
- the global namespace, and put select names into the std::
+ the global namespace, and put select names into the <code>std::</code>
namespace. [NB: this is the default, and is the same as
<option>--enable-cheaders=c_global</option>]
+ </listitem>
+ </varlistentry>
- <filename class="directory">include/c_std</filename>
+ <varlistentry>
+ <term><filename class="directory">include/c_std</filename></term>
+ <listitem>
Headers intended to include standard C headers
- already in namespace std, and put select names into the std::
+ already in namespace std, and put select names into the <code>std::</code>
namespace. [NB: this is the same as
<option>--enable-cheaders=c_std</option>]
+ </listitem>
+ </varlistentry>
- <filename class="directory">include/bits</filename>
+ <varlistentry>
+ <term><filename class="directory">include/bits</filename></term>
+ <listitem>
Files included by standard headers and by other files in
the bits directory.
+ </listitem>
+ </varlistentry>
- <filename class="directory">include/backward</filename>
- Headers provided for backward compatibility, such as <iostream.h>.
+ <varlistentry>
+ <term><filename class="directory">include/backward</filename></term>
+ <listitem>
+ Headers provided for backward compatibility, such as
+ <filename class="headerfile"><backward/hash_map></filename>.
They are not used in this library.
+ </listitem>
+ </varlistentry>
- <filename class="directory">include/ext</filename>
+ <varlistentry>
+ <term><filename class="directory">include/ext</filename></term>
+ <listitem>
Headers that define extensions to the standard library. No
- standard header refers to any of them.
+ standard header refers to any of them, in theory (there are some
+ exceptions).
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </listitem>
+ </varlistentry>
- <filename class="directory">scripts</filename>
+ <varlistentry>
+ <term><filename class="directory">scripts</filename></term>
+ <listitem>
Scripts that are used during the configure, build, make, or test
process.
+ </listitem>
+ </varlistentry>
- <filename class="directory">src</filename>
+ <varlistentry>
+ <term><filename class="directory">src</filename></term>
+ <listitem>
Files that are used in constructing the library, but are not
installed.
- <filename class="directory">src/c++98</filename>
+ <variablelist>
+ <varlistentry>
+ <term><filename class="directory">src/c++98</filename></term>
+ <listitem>
Source files compiled using <option>-std=gnu++98</option>.
+ </listitem>
+ </varlistentry>
- <filename class="directory">src/c++11</filename>
+ <varlistentry>
+ <term><filename class="directory">src/c++11</filename></term>
+ <listitem>
Source files compiled using <option>-std=gnu++11</option>.
+ </listitem>
+ </varlistentry>
- <filename class="directory">src/filesystem</filename>
+ <varlistentry>
+ <term><filename class="directory">src/filesystem</filename></term>
+ <listitem>
Source files for the Filesystem TS.
+ </listitem>
+ </varlistentry>
- <filename class="directory">src/shared</filename>
+ <varlistentry>
+ <term><filename class="directory">src/shared</filename></term>
+ <listitem>
Source code included by other files under both
<filename class="directory">src/c++98</filename> and
<filename class="directory">src/c++11</filename>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </listitem>
+ </varlistentry>
- <filename class="directory">testsuites/[backward, demangle, ext, performance, thread, 17_* to 30_*]</filename>
+ <varlistentry>
+ <term><filename class="directory">testsuites/[backward, demangle, ext, performance, thread, 17_* to 30_*]</filename></term>
+ <listitem>
Test programs are here, and may be used to begin to exercise the
library. Support for "make check" and "make check-install" is
complete, and runs through all the subdirectories here when this
command is issued from the build directory. Please note that
"make check" requires DejaGNU 1.4 or later to be installed.
+ </listitem>
+ </varlistentry>
+</variablelist>
+<para>
Other subdirectories contain variant versions of certain files
that are meant to be copied or linked by the configure script.
Currently these are:
+<literallayout><filename class="directory">config/abi</filename>
+<filename class="directory">config/allocator</filename>
+<filename class="directory">config/cpu</filename>
+<filename class="directory">config/io</filename>
+<filename class="directory">config/locale</filename>
+<filename class="directory">config/os</filename>
+</literallayout>
+</para>
- <filename class="directory">config/abi</filename>
- <filename class="directory">config/cpu</filename>
- <filename class="directory">config/io</filename>
- <filename class="directory">config/locale</filename>
- <filename class="directory">config/os</filename>
-
+<para>
In addition, a subdirectory holds the convenience library libsupc++.
+</para>
- <filename class="directory">libsupc++</filename>
+<variablelist>
+<varlistentry>
+ <term><filename class="directory">libsupc++</filename></term>
+ <listitem>
Contains the runtime library for C++, including exception
handling and memory allocation and deallocation, RTTI, terminate
handlers, etc.
+ </listitem>
+</varlistentry>
+</variablelist>
+<para>
Note that glibc also has a <filename class="directory">bits/</filename>
-subdirectory. We will either need to be careful not to collide with names
-in its <filename class="directory">bits/</filename>
-directory; or rename <filename class="directory">bits</filename> to (e.g.) <filename class="directory">cppbits</filename>.
+subdirectory. We need to be careful not to collide with names in its
+<filename class="directory">bits/</filename> directory. For example
+<filename class="headerfile"><bits/std_mutex.h></filename> has to be
+renamed from <filename class="headerfile"><bits/mutex.h></filename>.
+Another solution would be to rename <filename class="directory">bits</filename>
+to (e.g.) <filename class="directory">cppbits</filename>.
+</para>
+<para>
In files throughout the system, lines marked with an "XXX" indicate
a bug or incompletely-implemented feature. Lines marked "XXX MT"
indicate a place that may require attention for multi-thread safety.
- </literallayout>
+</para>
</section>