On Jun 12, 2010, at 13:54, Joshua Root wrote:
> On 2010-6-13 04:34 , Ryan Schmidt wrote:
>> graphviz-oldgui installs a pre-compiled binary; source is not available. The
>> binary is ppc-only so in r68725 I added "supported_archs ppc". I was
>> surprised then to see that on my Snow Leopard Mac MacPorts recorded in the
>> registry that this port was installed with the arch i386:
>>
>> $ port -v installed graphviz-oldgui
>> The following ports are currently installed:
>> graphviz-oldgui @16_0 (active) platform='darwin 10' archs='i386'
>>
>> I had expected to see "archs='ppc'" not "archs='i386'".
>>
>> I filed this as #25219 but Joshua closed it as invalid, saying I should
>> write "configure.build_arch ppc".
>>
>> I don't understand why the value MacPorts automatically set
>> configure.build_arch to was not one of the archs supported by the port nor
>> why this is not considered a bug.
>
> If the user has configured i386 in macports.conf, why should they get
> ppc? You are making unfounded assumptions about the value of
> configure.build_arch; try printing it. If there's a bug, it's that we
> don't error out when the chosen build arch is unsupported.
The user has not configured i386 in macports.conf; he has configured x86_64.
But neither x86_64 nor i386 are available for this port; only ppc is, as
indicated in supported_archs.
My understanding was that the supported_archs option was supposed to make
unnecessary manual setting of configure.build_arch. For example, to force a
32-bit build we used to write:
if {$build_arch == "x86_64"} {
configure.build_arch i386
} elseif {$build_arch == "ppc64"} {
configure.build_arch ppc
}
And now we can replace that with:
supported_archs ppc i386
MacPorts knows about acceptable fallback architectures in case the one the user
requested in macports.conf is not available. For example it correctly knows
that i386 is a fallback for x86_64 and that ppc is a fallback for ppc64. I
would say it just needs to be taught that ppc is a fallback for i386 and then
everything's happy, no?
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