Brian, on my machine (10.7) I don't have an archive file (.a) I have .dylib and it gives this output. This might be something that goes away with Lion.
∫ file /usr/lib/libstdc++.dylib
/usr/lib/libstdc++.dylib: Mach-O universal binary with 2 architectures
/usr/lib/libstdc++.dylib (for architecture x86_64): Mach-O 64-bit dynamically linked shared library x86_64
/usr/lib/libstdc++.dylib (for architecture i386): Mach-O dynamically linked shared library i386
But even on 10.6 the built-in libstdc++ library should be _at least_ x86_64. I would expect it to be more likely for you library to be x86_64 only and lack i386. But all of the built-in libraries on OS X 10.6+ should be universal (except notably carbon which is deprecated and lacks a x86_64 variant).
Have you replaced your system tool chain possibly with an i386 only version? If so, or unsure, try reinstalling Xcode?
Hope something in there will help,
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
William Woodall
Graduate Software Engineering
Auburn University
w@auburn.edu
wjwwood@gmail.com
On Fri, Sep 2, 2011 at 1:50 PM, Brian Gerkey
<gerkey@willowgarage.com> wrote:
On Fri, Sep 2, 2011 at 10:22 AM, Mark Moll <
mmoll@rice.edu> wrote:
> On Sep 2, 2011, at 12:07 PM, Brian Gerkey wrote:
>> That's why I went for the source rosdep approach for tinyxml on OSX.
>
> I added a port for tinyxml to MacPorts a little while back that also uses the -DTIXML_USE_STL flag. Would that work?
Yep, that should do it. Did it replace the old one by the same name?
Hmm, on my 10.6 machine, I just did a `sudo port selfupdate` followed
by `sudo port install tinyxml` and got a mile of linker errors,
preceded by this ominous line:
ld: warning: ignoring file //usr/lib/libstdc++.a, missing required
architecture x86_64 in file
I guess my system is now in some sort of profound 32-vs-64-bit hell....
brian.