[cairo] PKG_CONFIG undefined during checking for 'cairo's PNG backend', whilst 'checking for pkg-config' looks good.

[Leon Woestenberg]

Hello all,

On 11/4/06, Kalle Vahlman <kalle.vahlman at gmail.com> wrote:
> 2006/11/4, Leon Woestenberg <leon.woestenberg at gmail.com>:
> > I am bringing cairo 1.2.6 as an OpenEmbedded package build, but I run
> > into an undefined PKG_CONFIG variable during configure testing the
> > availability of png libraries using "--exists", while configure *did*
> > find the full pkg-config.
> >
> > I am lost as where the PKG_CONFIG is set or cleared, can someone look
> > along please?
>
> The actual issue (too old pkg-config) was already pointed out, but
> just for future reference it is the
>
>   PKG_PROG_PKG_CONFIG(0.19)
>
> autotools macro in configure.in that checks for it and defines the variable.
>
> Perhaps failing this test should be made fatal (as building cairo
> obviously doesn't work without it...)?
>
Fair enough, mine is 0.15.

Any idea why 0.19 is required for cairo 1.2.6?

Regards,

Leon.