Re: [gentoo-dev] RFC: new USE="win32" flag for mingw and prefix/windows support

[Mike Frysinger]

On 20 Apr 2016 21:01, Alon Bar-Lev wrote:
> On 20 April 2016 at 18:52, Ian Stakenvicius wrote:
> > After doing some experimentation with a mingw crossdev, I found that I
> > needed to do a lot of EXTRA_ECONF settings in combination with
> > USE="aqua" in order to get packages supporting a win32 API to be
> > configured appropriately.  In order to support this situation better,
> > I propose adding a new global flag 'win32', modelled after the 'aqua'
> > flag, that can be used instead to provide this configuration directly
> > in ebuilds.
> >
> > Just like USE="aqua", the flag will be use.mask'ed in base/ so that
> > users don't erroneously enable it.  I didn't un-use.mask it anywhere
> > yet since (A) I don't have a prefix/windows environment to test, and
> > (B) the mingw-based crossdev environments use profiles/embedded by
> > default, which doesn't inherit from profiles/base and so doesn't have
> > the use.mask restriction.
> >
> > The attached patch lists the necessary changes to profile/ as well as
> > the addition of USE=win32 to *ONE VERSION* of gtk+:2, gtk+:3 and cairo
> > (the actual commit will include more versions).
> >
> > Comments?
>
> You should be able to achieve similar behavior by looking at libc
> and/or CHOST without introducing new USE flag, just like we do for
> aix/solaris/freebsd etc...

agreed ... we have kernel_Winnt & elibc_Winnt already.  i think
those represent a mingw environment (vs a cygwin env).

i don't think a parallel to aqua makes sense.  aqua is a specific UI
toolkit in OS X.  it's more parallel to something like GTK+ or QT.

further, nesting aqua/win32 doesn't make sense as there is no valid
profile where both flags would be available.  USE=aqua can only be
turned on in an OS X profile where your proposed USE=win32 would be
masked (and vice versa).
-mike