Mplayer Variant Help

Joshua Root jmr at macports.org
Thu May 14 10:35:33 PDT 2009


On 2009-5-15 02:20, EmmGunn wrote:
> If I may, I have a follow up on the platform constraints. 
> So these constraints have nothing to do with what systems the compiled
> binaries will run on.  Is that right?  I seem to recall reading
> somewhere that macport builds will run on 10.4 and higher if I install
> with 10.5.

That's not true in general. Platform variants contain code specific both
to building on the corresponding platform and to running on it. MacPorts
does not currently offer a way to build on one platform and target another.

Running Leopard-built binaries on Tiger may succeed in *some* cases if
you change universal_target to 10.4 and universal_sysroot to
/Developer/SDKs/MacOSX10.4u.sdk. But any time there is a darwin_8 and/or
darwin_9 variant, MP will select the one matching the build machine,
which will generally cause problems.

- Josh


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