Re: [dpdk-dev] MinGW guide

[Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>]

On Mon, 15 Jun 2020 09:25:07 +0000
Tal Shnaiderman <talshn@mellanox.com> wrote:

> > Subject: Re: MinGW guide
> > 
> > On Sat, 13 Jun 2020 10:55:14 +0200
> > Thomas Monjalon <thomas@monjalon.net> wrote:  
> 
> [snip]
> 
> > > Then when installing mingw-w64-install.exe, a choice must be done
> > > between threads POSIX or Win32.
> > > If I understand well, POSIX must be chosen?  
> > 
> > Yes. DPDK config/meson.build now links with pthread if linker is not link.exe.
> >   
> 
> Where do we actually use pthread in Windows?

Nowhere indeed. Probably it was my mistake to link with it when adding MinGW
support. Shim is always used anyway.

> 
> > Note that maybe this can be relaxed (test needed!), i. e. link with pthread if
> > it is found, otherwise use shim. Benefit, if this works: no runtime
> > dependency on "libwinpthread-1.dll" for Windows.  
> 
> I was sure, since we create the threads with Win32 API (CreateThread), the correct option is Win32.
> My mingw-w64 is installed with that option and I didn't see issues with it.

Then I'm totally wrong. Your way MinGW-w64 produces an executable without
dependencies (apart from system libraries), so this should be preferred. I
tried and it works for me.

-- 
Dmitry Kozlyuk