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README update
- From: "Joseph S. Myers" <joseph at codesourcery dot com>
- To: libc-alpha at sourceware dot org
- Date: Fri, 27 Apr 2012 20:50:31 +0000 (UTC)
- Subject: README update
I propose this patch to update README, cutting down on the information
about Linuxthreads and pre-2.6 Linux kernels (which have been unlikely to
work for a long time) and udpating the lists of configurations to reflect
those currently in libc and ports (other than am33 in ports, which hasn't
been maintained for a very long time although there is now a volunteer to
update it).
Remark: Alpha is noted here as needing 2.6.9 kernel for NPTL, its
configure.in should probably be requiring 2.6.9 instead of 2.6.0.
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.
diff --git a/README b/README
index a4e3933..7c465ae 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.
@@ -31,28 +31,18 @@ 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
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
@@ -60,10 +50,15 @@ 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
+ arm-*-linux-gnueabi Requires Linux 2.6.16-rc1 for NPTL
+ hppa-*-linux-gnu Requires Linux 2.6.9 for NPTL
+ ia64-*-linux-gnu
+ m68k-*-linux-gnu
mips-*-linux-gnu Requires Linux 2.6.12 for NPTL
mips64-*-linux-gnu Requires Linux 2.6.12 for NPTL
+ powerpc-*-linux-gnu Software floating point
+ tilegx-*-linux-gnu
+ tilepro-*-linux-gnu
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
--
Joseph S. Myers
joseph@codesourcery.com