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musl - an implementation of the standard library for Linux-based systems
93be56ba88
some of these may have been from ancient (pre-SUSv2) POSIX versions; more likely, they were from POSIX drafts or glibc interpretations of what ancient versions of POSIX should have added (instead they made they described functionality mandatory and/or dropped it completely). others are purely glibc-isms, many of them ill-thought-out, like providing ways to lookup the min/max values of types at runtime (despite the impossibility of them changing at runtime and the impossibility of representing ULONG_MAX in a return value of type long). since our sysconf implementation does not support or return meaningful values for any of these, it's harmful to have the macros around; applications' build scripts may detect and attempt to use them, only to get -1/EINVAL as a result. if removing them does break some applications, and it's determined that the usage was reasonable, some of these could be added back on an as-needed basis, but they should return actual meaningful values, not junk like they were returning before. |
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musl libc
musl, pronounced like the word "mussel", is an MIT-licensed
implementation of the standard C library targetting the Linux syscall
API, suitable for use in a wide range of deployment environments. musl
offers efficient static and dynamic linking support, lightweight code
and low runtime overhead, strong fail-safe guarantees under correct
usage, and correctness in the sense of standards conformance and
safety. musl is built on the principle that these goals are best
achieved through simple code that is easy to understand and maintain.
The 1.0 release series for musl features coverage for all interfaces
defined in ISO C99 and POSIX 2008 base, along with a number of
non-standardized interfaces for compatibility with Linux, BSD, and
glibc functionality.
For basic installation instructions, see the included INSTALL file.
Information on full musl-targeted compiler toolchains, system
bootstrapping, and Linux distributions built on musl can be found on
the project website:
http://www.musl-libc.org/