Undefined symbols when compiling X11 software

[Ryan Schmidt]

On Sep 8, 2007, at 17:42, Olivier Croquette wrote:

> After having installed X11User and the X11 SDK both from Apple, I  
> couldn't understand why any port of any X11 app would fail with the  
> following kind of errors:
>
>
> $ sudo port install whatever
> --->  Building xrender with target all
> Error: Target org.macports.build returned: shell command " cd "/opt/ 
> local/var/macports/build/ 
> _opt_local_var_macports_sources_rsync.macports.org_release_ports_x11_x 
> render/work/libXrender-0.9.0" && make all " returned error 2
> Command output: /bin/sh ./libtool --mode=link /usr/bin/gcc-4.0 -I/ 
> opt/local/include   -I/usr/X11R6/include -DXTHREADS -O2 -L/opt/ 
> local/lib -o libXrender.la -rpath /opt/local/lib -version-number  
> 1:3:0 -no-undefined AddTrap.lo Color.lo Composite.lo Cursor.lo  
> FillRect.lo FillRects.lo Filter.lo Glyph.lo Picture.lo Poly.lo  
> Trap.lo Tri.lo Xrender.lo -L/usr/X11R6/lib -lX11 -lX11
> /usr/bin/gcc-4.0 -dynamiclib  -o .libs/libXrender.1.3.0.dylib .libs/ 
> AddTrap.o .libs/Color.o .libs/Composite.o .libs/Cursor.o .libs/ 
> FillRect.o .libs/FillRects.o .libs/Filter.o .libs/Glyph.o .libs/ 
> Picture.o .libs/Poly.o .libs/Trap.o .libs/Tri.o .libs/Xrender.o -L/ 
> opt/local/lib -L/usr/X11R6/lib -lX11 -install_name /opt/local/lib/ 
> libXrender.1.dylib -compatibility_version 5 -current_version 5.0
> ld: Undefined symbols:
> __XFlush
> __XSend
> _XParseColor
> __XEatData
> __XRead
> __XReadPad
> __XReply
> __XAllocTemp
> __XFreeTemp
> _XAddExtension
> _XCreatePixmap
> _XESetCloseDisplay
> _XFree
> _XFreePixmap
> _XInitExtension
> _XNextRequest
> _XSetErrorHandler
> _XSync
> __XDeqAsyncHandler
> __XGetAsyncReply
> __XLockMutex_fn
> __XUnlockMutex_fn
> __XVIDtoVisual
> __Xglobal_lock
> /usr/bin/libtool: internal link edit command failed
> make[1]: *** [libXrender.la] Error 1
>
>
> Everything was there in /usr/X11R6/lib, and even a "nm" was showing  
> all the requested symbols.
>
> Well, after trying to find out during 1h, I found the solution and  
> wanted to share with whoever might make the same mistake:
>
> If you have an Mac Intel, make sure you installed X11User from the  
> Mac Intel install DVDs. Otherwise, you will have a working X11  
> (through Rosetta), but you won't be able to link any port  
> application, since you can't mix PPC and Intel code...
>
> The error doesn't show the real problem!
>
> I found out compiling some sample programs on my own. Then I got a  
> much clearer warning:
> /usr/bin/ld: warning /usr/X11R6/lib/libX11.dylib cputype (18,  
> architecture ppc) does not match cputype (7) for specified -arch  
> flag: i386 (file not loaded)

So out of curiosity, where did you get your X11User.pkg from, if not  
from your Mac's install DVD? Did you use a PowerPC Mac's install DVD  
on your Intel Mac?