On May 17, 2012, at 1:09 PM, Eric Hall wrote: > On Wed, May 16, 2012 at 03:44:08AM +0200, Clemens Lang wrote: >> On Tue, May 15, 2012 at 06:05:45PM -0700, Bradley Giesbrecht wrote: >>> I do not recall why but at some point I needed "perl5.12 +threads >>> +shared" and after upgrading perl5.12 with these variants NONE of my >>> perl modules were found. It was required that I reinstall all perl >>> modules. >>> >>> Would perl modules built with perl -threads -shared work after >>> switching to perl +threads +shared? >> >> No, they probably would not, as rev-upgrade goes ahead and starts >> rebuilding all your perl modules as soon as you do that. However, >> rev-upgrade happily automates this process, so it's not that bad. >> >>> Is there a reason that perl does not build +threads +shared always or >>> as default? >> >> This question has been asked a couple of times on this list now and I >> have yet to hear a reason for why our perl isn't always +threads and >> +shared other than "I think I once knew somebody who back in the old >> days had some unspecified specified problem with perl +threads/+shared." >> ;) >> I'll leave the decision to the maintainer, but I think it's time to go >> for a full-featured perl and fix any problems (if any) that might arise >> in the modules. >> > > Both +thread and +shared will impose a performance penalty as > of perl5.12 (see this thread: > http://www.nntp.perl.org/group/perl.perl5.porters/2009/11/msg153361.html). > I don't know if this is still true for perl5.14 or not (I didn't find > anything doing a quick search). > Can someone re-iterate the reasons for using +shared and/or +threads?
There is this one:
$ port cat mod_perl2 | grep -A10 -- pre-configure
pre-configure {
set perl5bin "${prefix}/bin/perl5"
if {[string first "true" [exec ${perl5bin} -V:useshrplib]] == -1} {
ui_error "${name} requires perl5 to be installed with the +shared
variant."
return -code error "perl5 must be +shared"
}
if {[string first "define" [exec ${perl5bin} -V:usethreads]] == -1} {
ui_error "${name} requires perl5 to be installed with the +threads
variant."
return -code error "perl5 must be +threads"
}
}
Regards,
Bradley Giesbrecht (pixilla)
smime.p7s
Description: S/MIME cryptographic signature
_______________________________________________ macports-dev mailing list macports-dev@lists.macosforge.org http://lists.macosforge.org/mailman/listinfo.cgi/macports-dev
