[...]

sh: octave-config: not found
sh: octave-config: not found
sh: octave-config: not found
sh: octave-config: not found
sh: octave-config: not found
sh: octave-config: not found
sh: octave-config: not found
warning: Could not canonicalize hostname: giant
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/liblinear-2.30-1.src.rpm
exit status 0
Tagging with prefix: auto/ti/
Already on 'master'
sh: octave-config: not found
sh: octave-config: not found
sh: octave-config: not found
sh: octave-config: not found
sh: octave-config: not found
sh: octave-config: not found
sh: octave-config: not found
No conditional flags passed
from available:
--with   :	
--without:	 octave python python2 python3
Writing git revision for tag auto/ti/liblinear-2.30-1
error: Macro %_builddir has empty body
error: Macro %_builddir has empty body
sh: octave-config: not found
sh: octave-config: not found
sh: octave-config: not found
sh: octave-config: not found
sh: octave-config: not found
sh: octave-config: not found
sh: octave-config: not found
Executing(--clean): env -i TMP=/home/users/builder/tmp HOME=/home/users/builder PATH=/bin:/usr/bin:/usr/sbin:/sbin:/usr/X11R6/bin TMPDIR=/home/users/builder/tmp  /bin/sh -e /home/users/builder/tmp/rpm-tmp.50076
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf liblinear-2.30
Begin-TLD-Builder-Info
Build-Time: user:1.17s sys:0.52s real:2.62s (faults io:0 non-io:104913)
Files queued for ftp:
    533259 liblinear-2.30-1.src.rpm
       186 liblinear-2.30-1.src.rpm.uploadinfo
End-TLD-Builder-Info