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Rich Felker c9f415d7ea allow interposition/replacement of allocator (malloc) 
replacement is subject to conditions on the replacement functions.
they may only call functions which are async-signal-safe, as specified
either by POSIX or as an implementation-defined extension. if any
allocator functions are replaced, at least malloc, realloc, and free
must be provided. if calloc is not provided, it will behave as
malloc+memset. any of the memalign-family functions not provided will
fail with ENOMEM.

in order to implement the above properties, calloc and __memalign
check that they are using their own malloc or free, respectively.
choice to check malloc or free is based on considerations of
supporting __simple_malloc. in order to make this work, calloc is
split into separate versions for __simple_malloc and full malloc;
commit ba819787ee already did most of
the split anyway, and completing it saves an extra call frame.

previously, use of -Bsymbolic-functions made dynamic interposition
impossible. now, we are using an explicit dynamic-list, so add
allocator functions to the list. most are not referenced anyway, but
all are added for completeness.
2018-04-18 14:22:49 -04:00
arch fix minor namespace issues in termios.h 2018-03-10 18:19:41 -05:00
crt add s390x port 2016-11-11 23:06:21 -05:00
dist add another example option to dist/config.mak 2012-04-24 16:49:11 -04:00
include fix default feature profile in tar.h 2018-03-28 15:53:45 -04:00
ldso enable reclaim_gaps for fdpic 2018-04-17 19:23:01 -04:00
src allow interposition/replacement of allocator (malloc) 2018-04-18 14:22:49 -04:00
tools add CFI generation script for x86_64 2015-10-13 18:09:46 -04:00
.gitignore remove obsolete gitignore rules 2016-07-06 00:21:25 -04:00
configure use explicit dynamic-list rather than symbolic-functions for linking 2018-04-17 19:23:00 -04:00
COPYRIGHT update authors/contributors list 2018-02-21 14:19:01 -05:00
dynamic.list allow interposition/replacement of allocator (malloc) 2018-04-18 14:22:49 -04:00
INSTALL add powerpc64 and s390x to list of supported archs in INSTALL file 2017-08-29 20:48:02 -04:00
Makefile adjust makefile target-specific CFLAGS rules to be more robust & complete 2018-03-24 22:47:36 -04:00
README update version reference in the README file 2014-06-25 14:16:53 -04:00
VERSION release 1.1.19 2018-02-22 13:39:19 -05:00
WHATSNEW release 1.1.19 2018-02-22 13:39:19 -05:00

README 

    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 1.1 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/