Re: Incorrect libtool built when cross compiling under Mac OSX

[Peter O'Gorman]

On 15-Dec-08, at 6:28 AM, Rudolf Leitgeb wrote:

> Dear Ladies and Gentlemen,
>
> I may have triggered a bug in autoconf and would like to report  
> details here.
>
> I tried to build ImageMagick 6.4.7-4 in an Intel based iMac from  
> sources. As long as
> I compiled for i386 and x86_64, everything went fine, troubles  
> started, when I tried
> to cross compile for ppc and ppc64.
>
> First I created a configure script with autoconf, with this  
> configure script I
> generated Makefiles and libtool, and this libtool does not work  
> properly.
>
> The following versions were used:
>
> autoconf: 2.63
> Mac OSX: 10.5.5
> gcc toolchain: from xcode 3.1
>
>
> Here's a description of my build problems. Note that these problems  
> only appear
> when I cross compile for ppc and ppc64!
>
> configure looks for name lister tools, and tries two programs:  
> dumpbin and link
> I do have /bin/link, which is a hard link to /bin/ln, not a linker,  
> but for
> some reason configure doesn't discover that "/bin/link -dump - 
> symbols" returns
> an error.
> For some unknown reason global_symbol_pipe remains empty, which  
> ultimately
> causes the make process to fail.
>
> If I remove "link" from the list of programs configure tries to use  
> as BSD name
> lister, the build process works.
>
> Please let me know if you need more information.

Hi,

This report properly belongs on the bug-libtool list, not the bug- 
autoconf list, CCing both, please remove bug-autoconf when you reply.

I assume that you are doing something like ./configure CC='gcc -arch  
ppc' CXX='g++ -arch ppc' --host=ppc-apple-darwin9.5.0 ?

 Libtool, when looking for a name lister, checks for host = build,  
and if so, checks for plain old nm as well as ppc-apple-darwin9.5.0- 
nm, if build != host, it only looks for  ppc-apple-darwin9.5.0-nm. I  
agree that this is a bug. You can workaround by setting NM=/usr/bin/nm  
for configure.

I'll come up with a patch tomorrow, too tired right now.

Peter
--
Peter O'Gorman
http://pogma.com