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Re: README update
On Fri, 27 Apr 2012, Roland McGrath wrote:
> All looks fine to me. Just a couple of thoughts:
>
> > + powerpc-*-linux-gnu Software floating point
>
> Maybe:
>
> powerpc-*-linux-gnu Software floating point (--without-fp)
>
> > The ports distribution also contains code for other configurations that
> > do not work or have not been maintained recently, but will be of use to
>
> With your recent efforts to remove old stuff, perhaps this paragraph is no
> longer true?
The only thing it actually refers to now is am33.
This patch version now mentions am33 explicitly in the list in place of
that more general wording, and says "or newer" with Linux kernel versions
(suggested by Andreas on #glibc). If in future we make 2.6.16 the minimum
Linux kernel version supported, all these specific 2.6.x version
references can go away. (2.6.16 was the first long-term-support 2.6.x
kernel series, although the table on Wikipedia
<https://en.wikipedia.org/wiki/Linux_kernel#Maintenance> says it ceased to
be supported in July 2009.)
2012-04-27 Joseph Myers <joseph@codesourcery.com>
* README: Cut down references to pre-2.6 Linux kernels and
Linuxthreads. Update lists of configurations in libc and ports
and sort alphabetically. Say "or newer" with Linux kernel version
requirements.
diff --git a/README b/README
index a4e3933..1bcba3b 100644
--- a/README
+++ b/README
@@ -17,11 +17,11 @@ GNU/Hurd system, using configurations i[34567]86-*-gnu.
When working with Linux kernels, the GNU C Library version from
version 2.4 on is intended primarily for use with Linux kernel version
2.6.0 and later. We only support using the NPTL implementation of
-pthreads, which is now the default configuration. Most of the C
-library will continue to work on older Linux kernels and many programs
-will not require a 2.6 kernel to run correctly. However, pthreads and
-related functionality will not work at all on old kernels and we do
-not recommend using glibc 2.4 with any Linux kernel prior to 2.6.
+pthreads, which is now the default configuration. The library is
+unlikely to build without NPTL, or to work on Linux kernels prior to
+2.6. The old LinuxThreads add-on implementation of pthreads for older
+Linux kernels is no longer supported, and we are not distributing it
+with this release.
All Linux kernel versions prior to 2.6.16 are known to have some bugs that
may cause some of the tests related to pthreads in "make check" to fail.
@@ -31,45 +31,39 @@ Linux kernel version that you can use, before pursuing those bugs further.
Also note that the shared version of the libgcc_s library must be
installed for the pthread library to work correctly.
-The old LinuxThreads add-on implementation of pthreads for older Linux
-kernels is no longer supported, and we are not distributing it with this
-release. Someone has volunteered to revive its maintenance unofficially
-for at least a short time for the benefit of those using Linux kernels
-older than 2.6, but a working version is not presently available. When
-it is in working condition, we will make it available alongside future
-glibc releases. LinuxThreads will not be supported.
-
The GNU C Library supports these configurations for using Linux kernels:
- i[34567]86-*-linux-gnu
+ i[4567]86-*-linux-gnu
x86_64-*-linux-gnu
- powerpc-*-linux-gnu
+ powerpc-*-linux-gnu Hardware floating point required
powerpc64-*-linux-gnu
s390-*-linux-gnu
s390x-*-linux-gnu
- ia64-*-linux-gnu
+ sh[34]-*-linux-gnu Requires Linux 2.6.11 or newer
sparc*-*-linux-gnu
sparc64*-*-linux-gnu
- sh[34]-*-linux-gnu Requires Linux 2.6.11
-
The code for other CPU configurations supported by volunteers outside of
the core glibc maintenance effort is contained in the separate `ports'
add-on. You can find glibc-ports-VERSION distributed separately in the
same place where you got the main glibc distribution files.
Currently these configurations are known to work using the `ports' add-on:
- alpha*-*-linux-gnu Requires Linux 2.6.9 for NPTL
- arm-*-linux-gnu Requires Linux 2.6.15 for NPTL, no SMP support
- arm-*-linux-gnueabi Requires Linux 2.6.16-rc1 for NPTL, no SMP
- mips-*-linux-gnu Requires Linux 2.6.12 for NPTL
- mips64-*-linux-gnu Requires Linux 2.6.12 for NPTL
-
-The ports distribution also contains code for other configurations that
-do not work or have not been maintained recently, but will be of use to
-anyone trying to make a new configuration work. If you are interested
-in doing a port, please contact the glibc maintainers; see
-http://www.gnu.org/software/libc/ for more information.
+ alpha*-*-linux-gnu Requires Linux 2.6.9 or newer for NPTL
+ am33*-*-linux-gnu Not currently functional
+ arm-*-linux-gnueabi Requires Linux 2.6.16-rc1 or newer for NPTL
+ hppa-*-linux-gnu Requires Linux 2.6.9 or newer for NPTL
+ ia64-*-linux-gnu
+ m68k-*-linux-gnu
+ mips-*-linux-gnu Requires Linux 2.6.12 or newer for NPTL
+ mips64-*-linux-gnu Requires Linux 2.6.12 or newer for NPTL
+ powerpc-*-linux-gnu Software floating point (--without-fp)
+ tilegx-*-linux-gnu
+ tilepro-*-linux-gnu
+
+If you are interested in doing a port, please contact the glibc
+maintainers; see http://www.gnu.org/software/libc/ for more
+information.
See the file INSTALL to find out how to configure, build, and install
the GNU C Library. You might also consider reading the WWW pages for
--
Joseph S. Myers
joseph@codesourcery.com