Re: feature request: not need to specify PTW32_STATIC_LIB for static usage possible ?

[Ross Johnson <Ross dot Johnson at homemail dot com dot au>]

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.