Thanks for responding. I just started with the gumstix build so I literally followed the instructions to the letter. Fresh git pull, no changes to git tree, plenty of disk space, Sabayon linux (v5) OS.
I tried bitbake -c clean iproute2 ** bitbake iproute2 with the following results:

| q_atm.c:19:17: error: atm.h: No such file or directory                                                       
| q_atm.c: In function 'atm_parse_class_opt':                                                                  
| q_atm.c:66: warning: implicit declaration of function 'text2qos'                                             
| q_atm.c:67: warning: implicit declaration of function 'text2sap'                                             
| q_atm.c:71: warning: implicit declaration of function 'text2atm'                                             
| q_atm.c:72: error: 'T2A_PVC' undeclared (first use in this function)                                         
| q_atm.c:72: error: (Each undeclared identifier is reported only once                                         
| q_atm.c:72: error: for each function it appears in.)                                                         
| q_atm.c:72: error: 'T2A_NAME' undeclared (first use in this function)                                        
| q_atm.c:80: error: 'T2A_SVC' undeclared (first use in this function)                                         
| q_atm.c: In function 'atm_print_opt':
| q_atm.c:196: error: 'MAX_ATM_ADDR_LEN' undeclared (first use in this function)
| q_atm.c:207: warning: implicit declaration of function 'atm2text'
| q_atm.c:208: error: 'A2T_PRETTY' undeclared (first use in this function)
| q_atm.c:208: error: 'A2T_NAME' undeclared (first use in this function)
| q_atm.c:196: warning: unused variable 'buffer'
| make[1]: *** [q_atm.so] Error 1
| rm emp_ematch.lex.c emp_ematch.yacc.c
| make[1]: Leaving directory `/home/ben/Projects/Gumstix/overo-oe/tmp/work/armv7a-angstrom-linux-gnueabi/iproute2-2.6.29-r1/iproute2-2.6.29/tc'
| make: *** [all] Error 2
| FATAL: oe_runmake failed
NOTE: Task failed: /home/ben/Projects/Gumstix/overo-oe/tmp/work/armv7a-angstrom-linux-gnueabi/iproute2-2.6.29-r1/temp/log.do_compile.7892
ERROR: TaskFailed event exception, aborting
ERROR: Build of /home/ben/Projects/Gumstix/overo-oe/org.openembedded.dev/recipes/iproute2/iproute2_2.6.29.bb do_compile failed
ERROR: Task 7 (/home/ben/Projects/Gumstix/overo-oe/org.openembedded.dev/recipes/iproute2/iproute2_2.6.29.bb, do_compile) failed
NOTE: Tasks Summary: Attempted 302 tasks of which 296 didn't need to be rerun and 1 failed.
ERROR: '/home/ben/Projects/Gumstix/overo-oe/org.openembedded.dev/recipes/iproute2/iproute2_2.6.29.bb' failed

I'm happy to provide more info if needed.
Thanks again,
Ben