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[libstdc++] Document minimum glibc requirement
- From: Phil Edwards <phil at jaj dot com>
- To: libstdc++ at gcc dot gnu dot org, gcc-patches at gcc dot gnu dot org
- Date: Mon, 3 Feb 2003 11:45:34 -0500
- Subject: [libstdc++] Document minimum glibc requirement
Paolo noted that we've been getting some PRs lately resulting from a too-new
libstdc++ being used with a too-old glibc. This updates the documentation.
2003-02-03 Phil Edwards <pme@gcc.gnu.org>
PR libstdc++/9527, PR libstdc++/8713
* docs/html/install.html: Mention glibc version requirement.
* docs/html/faq/index.html (3.8): New note, glibc 2.2.5+ is needed
with 3.2.1+ (formatting bugfixes).
* docs/html/faq/index.txt: Regenerate.
Index: docs/html/install.html
===================================================================
RCS file: /cvs/gcc/gcc/libstdc++-v3/docs/html/install.html,v
retrieving revision 1.22
diff -u -3 -p -r1.22 install.html
--- docs/html/install.html 13 Nov 2002 01:04:03 -0000 1.22
+++ docs/html/install.html 3 Feb 2003 16:38:16 -0000
@@ -99,7 +99,8 @@
<dd>If gcc 3.1.0 or later on is being used on linux, an attempt
will be made to use "C" library functionality necessary for C++
- named locale support.
+ named locale support. For gcc 3.2.1 and later, this means that
+ glibc 2.2.5 or later is required.
<p>
The configure option --enable-clocale can be used force a
Index: docs/html/faq/index.html
===================================================================
RCS file: /cvs/gcc/gcc/libstdc++-v3/docs/html/faq/index.html,v
retrieving revision 1.49
diff -u -3 -p -r1.49 index.html
--- docs/html/faq/index.html 1 Feb 2003 21:47:13 -0000 1.49
+++ docs/html/faq/index.html 3 Feb 2003 16:38:16 -0000
@@ -499,7 +499,7 @@ which is no longer available, thanks dej
</p>
<hr />
- <h2><a name="3_7">Threading is broken on i386</a></h2>
+ <h2><a name="3_7">3.7 Threading is broken on i386</a></h2>
<p>Support for atomic integer operations is/was broken on i386
platforms. The assembly code accidentally used opcodes that are
only available on the i486 and later. So if you configured GCC
@@ -508,6 +508,18 @@ which is no longer available, thanks dej
actually running the code on a i386 will the problem appear.
</p>
<p>This is fixed in 3.2.2.
+ </p>
+
+<hr />
+ <h2><a name="3_8">3.8 Recent GNU/Linux glibc required?</a></h2>
+ <p>For 3.2.1 (shared library version 5.0.1) and later, the library
+ uses localization and formatting code from the system C library
+ (glibc) version 2.2.5. That version of glibc is over a year old
+ and contains necessary bugfixes. Many GNU/Linux distros make
+ glibc version 2.3.x available now.
+ </p>
+ <p>The guideline is simple: the more recent the C++ library, the
+ more recent the C library.
</p>
<hr />