[...]

No conditional flags passed
from available:
--with   :	
--without:	 apidocs
Available branches: master
Searching for tag auto/ti/libs3-2.0-4...
Searching for tag auto/ti/libs3-2_0-4...
--2017-04-10 08:53:12--  http://distfiles.pld-linux.org/distfiles/by-md5/e/5/e52da69ddc11019e98cf8246fc55b4e1/libs3-2.0.tar.gz
Resolving distfiles.pld-linux.org (distfiles.pld-linux.org)... 193.239.45.41
Connecting to distfiles.pld-linux.org (distfiles.pld-linux.org)|193.239.45.41|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 105783 (103K) [application/x-gzip]
Saving to: 'libs3-2.0.tar.gz'
     0K .......... .......... .......... .......... .......... 48% 1.05M 0s
    50K .......... .......... .......... .......... .......... 96% 2.12M 0s
   100K ...                                                   100% 6301G=0.07s
2017-04-10 08:53:12 (1.45 MB/s) - 'libs3-2.0.tar.gz' saved [105783/105783]
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/libs3-2.0-4.src.rpm
exit status 0
Tagging with prefix: auto/ti/
Already on 'master'
No conditional flags passed
from available:
--with   :	
--without:	 apidocs
Writing git revision for tag auto/ti/libs3-2.0-4
error: Macro %_builddir has empty body
error: Macro %_builddir has empty body
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.89346
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf libs3-2.0
Begin-TLD-Builder-Info
Build-Time: user:0.55s sys:0.09s real:1.82s (faults io:0 non-io:85621)
Files queued for ftp:
    111704 libs3-2.0-4.src.rpm
       181 libs3-2.0-4.src.rpm.uploadinfo
End-TLD-Builder-Info