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Subject: Re: Firefox 14 Build Failure
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Gerard Seibert <gerard <at> seibercom.net> writes:

> FreeBSD-8.3 STABLE amd64
> 
> I have attempted top build Firefox-14 twice without success. The build
> always fails with the following message:
> 
> configure: error: --with-system-png won't work because the system's 
> libpng doesn't have APNG support
> ===>  Script "../configure" failed unexpectedly.

This is caused when libpng is build without apng support, you have
to rebuild libpng and enable the apng option.