[...]

building SRPM using: cd rpm/packages; nice -n 0 ./builder -nu -nm --nodeps --http -bs  -r HEAD  -Tp auto/ti/ -tt  libssh.spec 2>&1
builder: SMP make flags are set to -j2
Cloning into 'libssh'...
d8de8d112585ffc11c49cde9799b4e6ed05d50fb
Already on 'master'
Already up-to-date.
Available branches: AC-branch DEVEL master
Searching for tag auto/ti/libssh-0.6.3-1...
Searching for tag auto/ti/libssh-0_6_3-1...
--2014-08-01 05:44:43--  http://distfiles.pld-linux.org/distfiles/by-md5/6/6/66cf16e77f60913b4d54f18c92cdbf71/libssh-0.6.3.tar.xz
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: 279492 (273K) [application/octet-stream]
Saving to: 'libssh-0.6.3.tar.xz'
     0K .......... .......... .......... .......... .......... 18%  768K 0s
    50K .......... .......... .......... .......... .......... 36%  782K 0s
   100K .......... .......... .......... .......... .......... 54% 1.48M 0s
   150K .......... .......... .......... .......... .......... 73% 1.48M 0s
   200K .......... .......... .......... .......... .......... 91% 1.61M 0s
   250K .......... .......... ..                              100% 12.4M=0.2s
2014-08-01 05:44:44 (1.17 MB/s) - 'libssh-0.6.3.tar.xz' saved [279492/279492]
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/libssh-0.6.3-1.src.rpm
exit status 0
Tagging with prefix: auto/ti/
Version: 0.6.3
Release: 1
tag: auto/ti/libssh-0.6.3-1
Searching for tag auto/ti/libssh-0.6.3-1...
To ssh://git@git.pld-linux.org/packages/libssh
 * [new tag]         auto/ti/libssh-0.6.3-1 -> auto/ti/libssh-0.6.3-1
error: Macro %_builddir has empty body
error: Macro %_builddir has empty body
Executing(--clean):  env -i TMP=/home/users/builder/tmp PATH=/bin:/usr/bin:/usr/sbin:/sbin:/usr/X11R6/bin HOME=/home/users/builder TMPDIR=/home/users/builder/tmp  /bin/sh -e /home/users/builder/tmp/rpm-tmp.56363
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf libssh-0.6.3
Begin-PLD-Builder-Info
Build-Time: user:2.66s sys:1.43s real:7.51s (faults io:0 non-io:172072)
Files queued for ftp:
    285695 libssh-0.6.3-1.src.rpm
       184 libssh-0.6.3-1.src.rpm.uploadinfo
End-PLD-Builder-Info