how to understand pkgconfig Requires: fields ?

[Daniel Stone]

On Sun, Apr 30, 2006 at 11:51:34PM +1000, Drew Parsons wrote:
> On Sun, 2006-04-30 at 15:36 +0300, Daniel Stone wrote:
> > On Sun, Apr 30, 2006 at 10:24:28PM +1000, Drew Parsons wrote:
> > > I'd like to ask someone to clarifies the Requires fields in the
> > > pkgconfig .pc files.
> > > Allow me to use lib/XprintUtil as an example.  Its pc file (see
> > > http://webcvs.freedesktop.org/xorg/lib/XprintUtil/xprintutil.pc.in?view=markup) has:
> > > 
> > > Requires: x11 xt printproto
> > > Requires.private: x11 xp xt
> > > 
> > > What is the difference between Requires: and Requires.private:?
> > > 
> > > xp is the odd one out, needed only in .private. At which point does it need to be installed?
> > 
> > .private is required for static linking.
> 
> OK.  I'm not familiar with pkgconfig dependencies.  What is being
> checked at build exactly? Does that mean Requires: need to be already
> installed at build time, while Requires.private: need only be installed
> for runtime (unless a static build is desired) ?

I believe so, yes.
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