[...]

building SRPM using: cd rpm/packages; nice -n 0 ./builder -nu -nm --nodeps --http -bs  -r HEAD  -Tp auto/ti/ -tt  xorg-lib-libpciaccess.spec 2>&1
builder: SMP make flags are set to -j2
Cloning into 'xorg-lib-libpciaccess'...
fbfb968edf0409aca9d5307faae3084a9fa44099
Already on 'master'
Your branch is up-to-date with 'origin/master'.
Already up-to-date.
Available branches: master
Searching for tag auto/ti/xorg-lib-libpciaccess-0.13.4-1...
Searching for tag auto/ti/xorg-lib-libpciaccess-0_13_4-1...
--2015-05-08 12:00:49--  http://distfiles.pld-linux.org/distfiles/by-md5/a/c/ace78aec799b1cf6dfaea55d3879ed9f/libpciaccess-0.13.4.tar.bz2
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: 372004 (363K) [application/x-bzip2]
Saving to: 'libpciaccess-0.13.4.tar.bz2'
     0K .......... .......... .......... .......... .......... 13%  812K 0s
    50K .......... .......... .......... .......... .......... 27% 1.53M 0s
   100K .......... .......... .......... .......... .......... 41% 1.59M 0s
   150K .......... .......... .......... .......... .......... 55% 1.67M 0s
   200K .......... .......... .......... .......... .......... 68% 11.4M 0s
   250K .......... .......... .......... .......... .......... 82% 1.79M 0s
   300K .......... .......... .......... .......... .......... 96% 11.5M 0s
   350K .......... ...                                        100% 10.6M=0.2s
2015-05-08 12:00:50 (1.86 MB/s) - 'libpciaccess-0.13.4.tar.bz2' saved [372004/372004]
warning: Could not canonicalize hostname: giant
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/xorg-lib-libpciaccess-0.13.4-1.src.rpm
exit status 0
Tagging with prefix: auto/ti/
Already on 'master'
Writing git revision for tag auto/ti/xorg-lib-libpciaccess-0.13.4-1
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.98076
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf libpciaccess-0.13.4
Begin-PLD-Builder-Info
Build-Time: user:2.72s sys:1.28s real:5.46s (faults io:0 non-io:190618)
Files queued for ftp:
    377333 xorg-lib-libpciaccess-0.13.4-1.src.rpm
       200 xorg-lib-libpciaccess-0.13.4-1.src.rpm.uploadinfo
End-PLD-Builder-Info