GNU C library (glibc) is one of the most important components of GNU Hurd and most modern Linux distributions.
GNU C library is used by almost all C programs and provides the most essential program interface.
The history of Unix and various standards determine much of the interface of the C library. In general the GNU C library supports the ISO C and POSIX standards. We also try to support the features of popular Unix variants (including BSD and System V) when those do not conflict with the standards. Different compatibility modes (selectable when you compile an application) allow the peaceful coexistence of compatibility support for different varieties of Unix.
The GNU C library is primarily designed to be a portable and high performance C library.
It follows all relevant standards (ISO C 99, POSIX.1c, POSIX.1j, POSIX.1d, Unix98, Single Unix Specification). It is also internationalized and has one of the most complete internationalization interfaces known.
What's New in This Release: [ read full changelog ]
· glibc's RPC implementation was obsoleted in favor of TI-RPC, but still allows existing programs to run.
· The new Linux interfaces clock_adjtime, name_to_handle_at, open_by_handle_at, syncfs, setns, and sendmmsg were added. New locales os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH, yue_HK, lij_IT, and mhr_RU were added.
· New encodings CP770, CP771, CP772, CP773, and CP774 were added.
· A new program called sotruss was added to allow tracing calls through PLTs.
· The malloc hook implementation, which never worked since the introduction of threads, was marked as deprecated.
· Many bugs were fixed.