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

[Kalle Vahlman]

2006/11/4, Leon Woestenberg <leon.woestenberg at gmail.com>:
> Hello all,
>
> 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...)?

-- 
Kalle Vahlman, zuh at iki.fi
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