[...]

--2018-06-19 16:45:41--  http://df.tld-linux.org/distfiles/by-md5/9/f/9f03407f5f7dac39f286bdaf3ec051e8/shorewall6-lite-5.2.0.4.tar.bz2
Resolving df.tld-linux.org (df.tld-linux.org)... 46.4.78.55
Connecting to df.tld-linux.org (df.tld-linux.org)|46.4.78.55|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 36035 (35K) [application/x-bzip2]
Saving to: 'shorewall6-lite-5.2.0.4.tar.bz2'
     0K .......... .......... .......... .....                100% 32.0M=0.001s
2018-06-19 16:45:41 (32.0 MB/s) - 'shorewall6-lite-5.2.0.4.tar.bz2' saved [36035/36035]
--2018-06-19 16:45:41--  http://df.tld-linux.org/distfiles/by-md5/c/f/cf6b2a6c1a8827a99c1b3e717d42ccff/shorewall-init-5.2.0.4.tar.bz2
Resolving df.tld-linux.org (df.tld-linux.org)... 46.4.78.55
Connecting to df.tld-linux.org (df.tld-linux.org)|46.4.78.55|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 30526 (30K) [application/x-bzip2]
Saving to: 'shorewall-init-5.2.0.4.tar.bz2'
     0K .......... .......... .........                       100% 38.7M=0.001s
2018-06-19 16:45:41 (38.7 MB/s) - 'shorewall-init-5.2.0.4.tar.bz2' saved [30526/30526]
--2018-06-19 16:45:41--  http://df.tld-linux.org/distfiles/by-md5/b/e/be73e2f76b2438e7813f62873a50c203/shorewall-core-5.2.0.4.tar.bz2
Resolving df.tld-linux.org (df.tld-linux.org)... 46.4.78.55
Connecting to df.tld-linux.org (df.tld-linux.org)|46.4.78.55|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 76022 (74K) [application/x-bzip2]
Saving to: 'shorewall-core-5.2.0.4.tar.bz2'
     0K .......... .......... .......... .......... .......... 67% 27.0M 0s
    50K .......... .......... ....                            100%  270M=0.002s
2018-06-19 16:45:41 (38.2 MB/s) - 'shorewall-core-5.2.0.4.tar.bz2' saved [76022/76022]
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/shorewall-5.2.0.4-0.1.src.rpm
exit status 0
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.39262
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf shorewall-5.2.0.4
Begin-TLD-Builder-Info
Build-Time: user:1.03s sys:0.38s real:6.15s (faults io:207 non-io:164598)
Files queued for ftp:
    914782 shorewall-5.2.0.4-0.1.src.rpm
End-TLD-Builder-Info