[...]

Building for target x86_64-linux
Wrote: /home/users/builder/rpm/SRPMS/gperftools-2.15-1.src.rpm
RPM build warnings:
    Macro expanded in comment on line 1: %{_lib}/libtcmalloc* is useless without /usr/%{_lib}/libstdc++.so.6, move back to /usr?
real 0.07
user 0.06
sys 0.01
exit status 0
Writing package revision
builder: SMP make flags are set to -j2
Already up to date.
warning: Macro expanded in comment on line 1: %{_lib}/libtcmalloc* is useless without /usr/%{_lib}/libstdc++.so.6, move back to /usr?
No conditional flags passed
from available:
--with   :	 minimal
--without:	 libunwind
Available branches: master
gperftools-2.15.tar.gz having proper md5sum already exists
./builder[2768]: ulimit: unlimited exceeds allowable coredump(blocks) limit
Updating .distbcond
warning: Macro expanded in comment on line 1: %{_lib}/libtcmalloc* is useless without /usr/%{_lib}/libstdc++.so.6, move back to /usr?
Building target platforms: x86_64-linux
Building for target x86_64-linux
Wrote: /home/users/builder/rpm/SRPMS/gperftools-2.15-1.src.rpm
RPM build warnings:
    Macro expanded in comment on line 1: %{_lib}/libtcmalloc* is useless without /usr/%{_lib}/libstdc++.so.6, move back to /usr?
real 0.07
user 0.06
sys 0.01
warning: Macro expanded in comment on line 1: %{_lib}/libtcmalloc* is useless without /usr/%{_lib}/libstdc++.so.6, move back to /usr?
Writing git revision for tag tld/gperftools-2.15-1
error: Macro %_builddir has empty body
Begin-TLD-Builder-Info
Build-Time: user:0.89s sys:0.37s real:2.95s (faults io:7 non-io:150018)
Files queued for ftp:
   1522565 gperftools-2.15-1.src.rpm
       187 gperftools-2.15-1.src.rpm.uploadinfo
End-TLD-Builder-Info