On May 13, 2009, at 12:25, EmmGunn wrote:
I'm looking at the different variants for mplayer and most of them
are self explanatory, but I have a couple of questions. I noticed
this in the port file:
83 # configure is not autoconf
84 universal_variant no
which I took to mean that a universal variant is not available,
That's correct. Because mplayer does not use a standard autoconf
configure script, the standard universal variant does not work with
it. If someone wanted to invest some time in figuring out how to make
mplayer compile universal, it could probably be done by writing a
custom universal variant for that port.
but then I see a binary_codecs variant which has something about
powerpc and i386. What does this do exactly? Is this something
equivalent to a universal variant? I was hoping to compile a
universal build of mplayer.
Sorry, the port says "universal_variant no", which means someone
tried to build a universal binary and found that it failed, and added
this to the portfile to save you the trouble. If you really want a
universal binary, you will have to write a custom universal variant
for this port. If you do, please contribute it back to us so that we
can put it in the portfile.
Also, just out of curiosity, what are the darwin and darwin_8
variants. I couldn't find anything about them either. Thanks in
advance for any help.
These are platform variants. If they are present in a portfile,
MacPorts automatically selects them on the appropriate platform.
"darwin" variants are selected on operating systems based on Darwin,
including Mac OS X. darwin_8 is selected on Darwin 8.x operating
systems, such as Mac OS X 10.4.x. Darwin 9.x would be Mac OS X
10.5.x, and so on. darwin_i386 is selected if you're running Darwin
(or Mac OS X) on an Intel processor. darwin_powerpc is selected if
you're running Darwin (or Mac OS X) on a PowerPC processor. You never
select these variants manually; MacPorts does it for you if
necessary. Ports use these variants if they need different
instructions to build correctly in different kinds of environments.
The description of the binary_codecs variant says "Enable platform-
specific binary codecs". Most ports in MacPorts are compiled from
source but sometimes bits are only available as pre-compiled
binaries, as is apparently the case for the codecs this variant wants
to enable. This variant seems to be designed to download one file for
PowerPC computers and a different file for Intel computers, and then
install their contents. However, I don't believe the variant
functions as intended. It checks whether variants darwin_i386 or
darwin_powerpc are set. Since the port does not declare any variants
by those names, those variants are never set, hence the binary_codecs
variant never does anything. This is a bug in the portfile. It looks
like when the binary_codecs variant was set up in r20652, darwin_i386
and darwin_powerpc variants did exist in the port, but they were
subsequently removed without considering the effect that would have
on the binary_codecs variant. I fixed this bug just now, but now the
variant produces an error. Since I'm not an MPlayer expert I filed a
ticket for this problem:
http://trac.macports.org/ticket/19619
_______________________________________________
macports-users mailing list
macports-users@lists.macosforge.org
http://lists.macosforge.org/mailman/listinfo.cgi/macports-users
