In perl.git, the branch tonyc/fix-darwin-g++ has been created
<http://perl5.git.perl.org/perl.git/commitdiff/67083b7b2d5c1863032b4a0ebb7156a4249c645a?hp=0000000000000000000000000000000000000000>
at 67083b7b2d5c1863032b4a0ebb7156a4249c645a (commit)
- Log -----------------------------------------------------------------
commit 67083b7b2d5c1863032b4a0ebb7156a4249c645a
Author: Tony Cook <[email protected]>
Date: Mon Apr 4 12:03:58 2016 +1000
avoid mis-mangled name references on threaded C++ builds
g++ on recent darwin appears to be clang++ in disguise, and so
supports the TSA decorations, but the wrappers we define don't have
explicit extern "C" linkage (which perlapi.h does have).
Under C++ Time::HiRes wraps its includes in extern "C" { }, and
so references unmangled names for the perl_tsa_mutex_*() wrappers,
but since util.c never sees an extern "C" for those functions it
produces mangled names, causing undefined references in Time::HiRes.
Detected by a smoke run againt a smoke-me branch:
http://www.nntp.perl.org/group/perl.daily-build.reports/2016/03/msg190183.html
Longer term the TSA decorations should probably be probed for in Configure
and the wrapper declarations moved to embed.fnc
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