musl/src/internal/version.c, branch master

improve machinery for ldso to report libc version

2018年09月12日T18:34:28+00:00

eliminate gratuitous glue function for reporting the version, which
was probably leftover from the old dynamic linker design which lacked
a clear barrier for when/how it could access global data. put the
declaration for the data object that replaces it in libc.h where it
can be type checked.

define and use internal macros for hidden visibility, weak refs

2018年09月05日T18:05:14+00:00

this cleans up what had become widespread direct inline use of "GNU C"
style attributes directly in the source, and lowers the barrier to
increased use of hidden visibility, which will be useful to recovering
some of the efficiency lost when the protected visibility hack was
dropped in commit dc2f368e565c37728b0d620380b849c3a1ddd78f, especially
on archs where the PLT ABI is costly.

remove use of SHARED macro in dynamic linker version reporting

2015年11月12日T21:13:52+00:00

also fix visibility of the glue function used.

add infrastructure to record and report the version of libc.so

2013年12月01日T22:27:25+00:00

this is still experimental and subject to change. for git checkouts,
an attempt is made to record the exact revision to aid in bug reports
and debugging. no version information is recorded in the static libc.a
or binaries it's linked into.