-This directory contains the version 2.5 release of the GNU C Library.
+This directory contains the sources of the GNU C Library.
+See the file "version.h" for what release version you have.
The GNU C Library is the standard system C library for all GNU systems,
and is an important part of what makes up a GNU system. It provides the
implement the operating system behavior seen by user applications.
In GNU/Hurd systems, it works with a microkernel and Hurd servers.
-Version 2.4 is the first release after a long period of development, and
-introduces changes to the API and a new ABI for all configurations. It
-has been tested and deployed in new production systems, but should still
-be considered somewhat experimental. The stable 2.3 release series
-continues to be maintained, and implements a widely-deployed ABI.
-Version 2.3.6 is available, and we will release 2.3.7 with more bug fixes.
-
The GNU C Library implements much of the POSIX.1 functionality in the
-GNU/Hurd system, using configurations i[34567]86-*-gnu.
-
-When working with Linux kernels, the GNU C Library version 2.4 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.
+GNU/Hurd system, using configurations i[4567]86-*-gnu.
-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.
-If you see such problems, please try the test suite on the most recent
-Linux kernel version that you can use, before pursuing those bugs further.
+When working with Linux kernels, this version of the GNU C Library
+requires Linux kernel version 3.2 or later.
-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.
+Also note that the shared version of the libgcc_s library must be
+installed for the pthread library to work correctly.
The GNU C Library supports these configurations for using Linux kernels:
- i[34567]86-*-linux-gnu
- x86_64-*-linux-gnu
- powerpc-*-linux-gnu
- powerpc64-*-linux-gnu
+ aarch64*-*-linux-gnu
+ alpha*-*-linux-gnu
+ arm-*-linux-gnueabi
+ csky-*-linux-gnuabiv2
+ hppa-*-linux-gnu
+ i[4567]86-*-linux-gnu
+ x86_64-*-linux-gnu Can build either x86_64 or x32
+ ia64-*-linux-gnu
+ m68k-*-linux-gnu
+ microblaze*-*-linux-gnu
+ mips-*-linux-gnu
+ mips64-*-linux-gnu
+ powerpc-*-linux-gnu Hardware or software floating point, BE only.
+ powerpc64*-*-linux-gnu Big-endian and little-endian.
s390-*-linux-gnu
s390x-*-linux-gnu
- ia64-*-linux-gnu
+ riscv64-*-linux-gnu
+ sh[34]-*-linux-gnu
sparc*-*-linux-gnu
sparc64*-*-linux-gnu
- alpha*-*-linux-gnu Requires Linux 2.6.9 for NPTL
- 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-2.5 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:
-
- 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.
+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
the manual in the current development sources to see if your problem has
already been corrected.
-The file NOTES contains a description of the feature-test macros used
-in the GNU C library, explaining how you can tell the library what
-facilities you want it to make available.
-
Please see http://www.gnu.org/software/libc/bugs.html for bug reporting
information. We are now using the Bugzilla system to track all bug reports.
This web page gives detailed information on how to report bugs properly.
The GNU C Library is free software. See the file COPYING.LIB for copying
conditions, and LICENSES for notices about a few contributions that require
-these additional notices to be distributed.
+these additional notices to be distributed. License copyright years may be
+listed using range notation, e.g., 1996-2015, indicating that every year in
+the range, inclusive, is a copyrightable year that would otherwise be listed
+individually.
projects / thirdparty / glibc.git / blobdiff