[...]

: line 2024: Possible unexpanded macro in: %package -n libtsan-multilib-%{multilib2}
warning: line 2040: Possible unexpanded macro in: %package -n libtsan-multilib-%{multilib2}-devel
warning: line 2055: Possible unexpanded macro in: %package -n libtsan-multilib-%{multilib2}-static
warning: line 2120: It's not recommended to have unversioned Obsoletes: Obsoletes:	libubsan-multilib
warning: line 2138: It's not recommended to have unversioned Obsoletes: Obsoletes:	libubsan-multilib-devel
warning: line 2154: It's not recommended to have unversioned Obsoletes: Obsoletes:	libubsan-multilib-static
warning: line 2164: Possible unexpanded macro in: %package -n libubsan-multilib-%{multilib2}
warning: line 2181: Possible unexpanded macro in: %package -n libubsan-multilib-%{multilib2}-devel
warning: line 2196: Possible unexpanded macro in: %package -n libubsan-multilib-%{multilib2}-static
warning: line 2307: Possible unexpanded macro in: %package -n libvtv-multilib-%{multilib2}
warning: line 2324: Possible unexpanded macro in: %package -n libvtv-multilib-%{multilib2}-devel
warning: line 2340: Possible unexpanded macro in: %package -n libvtv-multilib-%{multilib2}-static
warning: line 2396: second Description
warning: line 2401: It's not recommended to have unversioned Obsoletes: Obsoletes:	libatomic-multilib
warning: line 2419: It's not recommended to have unversioned Obsoletes: Obsoletes:	libatomic-multilib-devel
warning: line 2435: It's not recommended to have unversioned Obsoletes: Obsoletes:	libatomic-multilib-static
warning: line 2443: Possible unexpanded macro in: %package -n libatomic-multilib-%{multilib2}
warning: line 2459: Possible unexpanded macro in: %package -n libatomic-multilib-%{multilib2}-devel
warning: line 2474: Possible unexpanded macro in: %package -n libatomic-multilib-%{multilib2}-static
warning: Macro expanded in comment on line 3630: %{gcclibdir}/libgfortranbegin.la
warning: Macro expanded in comment on line 3631: %{gcclibdir}/libgfortranbegin.a
Writing git revision for tag tld/gcc-10.2.0-3
error: Macro %_builddir has empty body
Begin-TLD-Builder-Info
Build-Time: user:11.59s sys:2.71s real:18.21s (faults io:207 non-io:304759)
Files queued for ftp:
  79537602 gcc-10.2.0-3.src.rpm
       182 gcc-10.2.0-3.src.rpm.uploadinfo
End-TLD-Builder-Info