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Update README to describe current supported systems.

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Joseph Myers 2012-04-27 21:35:47 +00:00
parent 468f7a8084
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@ -1,5 +1,10 @@
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.
* config.h.in [IS_IN_build]: Allow compiling without optimization.
2012-04-27 Ryan S. Arnold <rsa@linux.vnet.ibm.com>

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README
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@ -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:
Currently these configurations have code in 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
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
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.
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