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configure.xml (--enable-clocale): Document the 'newlib' and 'darwin' options. 

2012-10-22  Yufeng Zhang  <yufeng.zhang@arm.com>
	    Jonathan Wakely  <jwakely.gcc@gmail.com>

	* doc/xml/manual/configure.xml (--enable-clocale): Document the
	'newlib' and 'darwin' options. Minor stylistic improvements.

Co-Authored-By: Jonathan Wakely <jwakely.gcc@gmail.com>

From-SVN: r192661
This commit is contained in:
Yufeng Zhang 2012-10-21 23:42:17 +00:00 committed by Jonathan Wakely
parent cab54dfa3a
commit e3b0260052
2 changed files with 23 additions and 12 deletions
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6
libstdc++-v3/ChangeLog
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@ -1,3 +1,9 @@
2012-10-22 Yufeng Zhang <yufeng.zhang@arm.com>
Jonathan Wakely <jwakely.gcc@gmail.com>
* doc/xml/manual/configure.xml (--enable-clocale): Document the
'newlib' and 'darwin' options. Minor stylistic improvements.
2012-10-21 François Dumont <fdumont@gcc.gnu.org>
* include/profile/map.h (map::emplace_hint): Remove invalid

29
libstdc++-v3/doc/xml/manual/configure.xml
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@ -38,7 +38,7 @@
</para>
<para>The canonical way to find out the configure options that are
available for a given set of libstdc++ sources is to go to the
source directory and then type:<command>./configure --help</command>.
source directory and then type: <command>./configure --help</command>.
</para>
<variablelist>
@ -107,15 +107,20 @@
(IEEE Std. 1003.1-2001) model based on langinfo/iconv/catgets,
'gnu' to specify a model based on functionality from the GNU C
library (langinfo/iconv/gettext) (from <link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://sources.redhat.com/glibc/">glibc</link>, the GNU C
library), or 'generic' to use a generic "C"
abstraction which consists of "C" locale info.
library), 'generic' to use a generic "C" abstraction which consists
of "C" locale info, 'newlib' to specify the Newlib C library model
which only differs from the 'generic' model in the handling of
ctype, or 'darwin' which omits the <type>wchar_t</type> specializations
needed by the 'generic' model.
</para>
<para>If not explicitly specified, the configure proccess tries
<para>If not explicitly specified, the configure process tries
to guess the most suitable package from the choices above. The
default is 'generic'. On glibc-based systems of sufficient
vintage (2.3 and newer), 'gnu' is automatically selected. This option
can change the library ABI.
vintage (2.3 and newer), 'gnu' is automatically selected. On newlib-based
systems (<code>'--with_newlib=yes'</code>) and OpenBSD, 'newlib' is
automatically selected. On Mac OS X 'darwin' is automatically selected.
This option can change the library ABI.
</para>
</listitem></varlistentry>
@ -181,9 +186,9 @@
and of the nanosleep and sched_yield functions, used in the
implementation of [thread.thread.this] of the 2011 ISO C++ standard.
The choice OPTION=yes checks for the availability of the facilities
in libc and libposix4. In case of need the latter is also linked
in libc and libposix4. In case it's needed the latter is also linked
to libstdc++ as part of the build process. OPTION=rt also searches
(and, in case, links) librt. Note that the latter is not always
(and, if needed, links) librt. Note that the latter is not always
desirable because, in glibc, for example, in turn it triggers the
linking of libpthread too, which activates locking, a large overhead
for single-thread programs. OPTION=no skips the tests completely.
@ -249,7 +254,7 @@
</listitem></varlistentry>
<varlistentry><term><code>--enable-c99</code></term>
<listitem><para>The "long long" type was introduced in C99, along
<listitem><para>The <type>long long</type> type was introduced in C99, along
with many other functions for wide characters, and math
classification macros, etc. If enabled, all C99 functions not
specified by the C++ standard will be put into <code>namespace
@ -264,7 +269,7 @@
</listitem></varlistentry>
<varlistentry><term><code>--enable-wchar_t</code>[default]</term>
<listitem><para>Template specializations for the "wchar_t" type are
<listitem><para>Template specializations for the <type>wchar_t</type> type are
required for wide character conversion support. Disabling
wide character specializations may be expedient for initial
porting efforts, but builds only a subset of what is required by
@ -274,7 +279,7 @@
</listitem></varlistentry>
<varlistentry><term><code>--enable-long-long </code></term>
<listitem><para>The "long long" type was introduced in C99. It is
<listitem><para>The <type>long long</type> type was introduced in C99. It is
provided as a GNU extension to C++98 in g++. This flag builds
support for "long long" into the library (specialized
templates and the like for iostreams). This option is on by default:
@ -351,7 +356,7 @@
<listitem><para>Use extern template to pre-instantiate all required
specializations for certain types defined in the standard libraries.
These types include <classname>string</classname> and dependents like
<classname>char_traits</classname>, the templateized io classes,
<classname>char_traits</classname>, the templatized IO classes,
<classname>allocator</classname>, and others.
Disabling means that implicit
template generation will be used when compiling these types. By