In march 2003 there was a thread (http://list-archive.xemacs.org/xemacs-beta/200303/msg00165.html,...) about a build failure under AIX 51 due to unresolved references.
 
I'm currently experiencing a similar problem doing something unrelated.
 
 smsendbuff                [264]   ER DS (/usr/lib/libX11.a[shr4.o])
                                   00022c3c .data    R_POS    [746]   <smsendbuff>
 smfreebuff                [262]   ER DS (/usr/lib/libX11.a[shr4.o])
                                   00022c40 .data    R_POS    [748]   <smfreebuff>
 smrcvbuff                 [260]   ER DS (/usr/lib/libX11.a[shr4.o])
                                   00022c44 .data    R_POS    [750]   <smrcvbuff>
 smconnect                 [256]   ER DS (/usr/lib/libX11.a[shr4.o])
                                   00022c48 .data    R_POS    [752]   <smconnect>
 smsocket                  [254]   ER DS (/usr/lib/libX11.a[shr4.o])
                                   00022c4c .data    R_POS    [754]   <smsocket>
 smgetbuff                 [258]   ER DS (/usr/lib/libX11.a[shr4.o])
                                   00022c9c .data    R_POS    [794]   <smgetbuff>
 smwait                    [266]   ER DS (/usr/lib/libX11.a[shr4.o])
                                   00023190 .data    R_POS    [1428]  <smwait>
 __crypt_r                 [676]   ER DS (/usr/lib/libc.a[shr.o])
                                   00043a98 .data    R_POS    [3464]  <__crypt_r>
 __setkey_r                [680]   ER DS (/usr/lib/libc.a[shr.o])
                                   00043a9c .data    R_POS    [3466]  <__setkey_r>
 __encrypt_r               [678]   ER DS (/usr/lib/libc.a[shr.o])
                                   00043aa0 .data    R_POS    [3468]  <__encrypt_r>
 
Unfortunately, the thread mentioned died out.
I'd like to know whether / how this issue got resolved.
 
thx a bunch,
Hans