From: Ross Johnson <Ross.Johnson@homemail.com.au>
To: pthreads-win32@sourceware.org
Subject: Re: feature request: not need to specify PTW32_STATIC_LIB for static usage possible ?
Date: Fri, 01 Nov 2013 00:56:00 -0000 [thread overview]
Message-ID: <5272FC42.5000501@homemail.com.au> (raw)
In-Reply-To: <CAL1QdWdLGhGttZqYSjN=U0TBkc-NJx=sao9xpFYtVf3hgrZ2jA@mail.gmail.com>
On 1/11/2013 6:46 AM, Roger Pack wrote:
> On 2/20/13, Roger Pack <rogerdpack2@gmail.com> wrote:
>>> Sounds like you wanted to address this to the list but I think you
>>> replied only to me.
>> oops, moving back on list...suggest the ML be modified so the default
>> reply-to is the ML :)
>>
>>> In Linux, the usual 'static' qualifier on declarations controls
>>> visibility, regardless of dynamic or static linking but is restricted to
>>> a file (or perhaps more accurately a compilation unit). If this isn't
>>> convenient then GCC 4 and above recognise __attribute__
>>> ((visibility("hidden"))), and also "#pragma GCC visibility
>>> push(hidden)/#pragma GCC visibility pop" for block coverage in e.g.
>>> header files. Otherwise everything is visible by default.
>>>
>>> So I believe GNU can build a Windows dynamic or static library using the
>>> merged pthread.c after adding 'static' qualifiers where necessary, but I
>>> don't know off-hand if this works for MSVS. If it does, i.e. replace the
>>> need for _declspec(export/import), then we probably have a solution.
> I saw this the other day in a script that installs win32-pthreads:
>
> for file in 'pthread.h' 'sched.h' 'semaphore.h'; do
> ed -s "$prefix/include/$file" <<< $'g/ __declspec (dllexport)/s///g\nw\nq'
> ed -s "$prefix/include/$file" <<< $'g/ __declspec (dllimport)/s///g\nw\nq'
> done
>
> I'll admit that it is a bit frustrating to have to do
> export CFLAGS=-DPTW32_STATIC_LIB
> for anything that ends up using pthreads...
>
> FWIW.
> -roger-
The original intent was that the library would always be a DLL so the
burden was placed on static link users to add the switch.
I don't like having references to linkage mode in header files but IIRC
couldn't avoid it, so if anyone does have a way of avoiding it I'd be
interested.
prev parent reply other threads:[~2013-11-01 0:56 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-15 18:36 Roger Pack
2013-02-19 1:03 ` Ross Johnson
[not found] ` <CAL1QdWcyU76396H_RzXNBMAf7QFrmtC_Ab7ajC=TzG43QJm7fQ@mail.gmail.com>
[not found] ` <51242375.1070904@homemail.com.au>
2013-02-20 17:01 ` Roger Pack
2013-10-31 19:46 ` Roger Pack
2013-11-01 0:56 ` Ross Johnson [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=5272FC42.5000501@homemail.com.au \
--to=ross.johnson@homemail.com.au \
--cc=pthreads-win32@sourceware.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).