Re: Tiger gcc 4 builds apps that don't run on 10.2.8

FROM : Marcel Weiher
DATE : Mon May 02 17:40:27 2005

On 2 May 2005, at 16:07, Nick Zitzmann wrote:

>
> On May 2, 2005, at 8:51 AM, Sean McBride wrote:
>

>> Oh yeah?... Why should this be?  I could understand for C++ that
>> there
>> could be ABI changes, but for C/Obj-C?

>
> As explained earlier, GCC 4 links the compiled code to a library
> titled "libmx", which did not exist in any version of Mac OS X prior
> to 10.3.9 (I think). GCC 3.3 doesn't do this.


Hmm...I am seeing different behavior, though it may be related:  I get
no references to libmx in my shipped binary (just downloaded and dumped
via otool -L to be sure).  What I get instead is:

dyld:
/Volumes/PdfCompress-4.4.2/PdfCompress.app/Contents/MacOS/PdfCompress
Undefined symbols:
MPWGraphRep undefined reference to _cosf expected to be defined in
/usr/lib/libSystem.B.dylib

Except of course that this symbol is present in libSystem...

Marcel



--
Marcel Weiher                          Metaobject Software Technologies
<email_removed>        www.metaobject.com
The simplicity of power            HOM, IDEAs, MetaAd etc.
        1d480c25f397c4786386135f8e8938e4