D: [iurt_root_command] chroot
Building target platforms: x86_64
Building for target x86_64
Installing /home/baz/rpmbuild/SRPMS/nec2c-1.3.3-1.mga.src.rpm
Executing(%mkbuilddir): /bin/sh -e /home/baz/rpmbuild/tmp/rpm-tmp.845y36
+ umask 022
+ cd /home/baz/rpmbuild/BUILD/nec2c-1.3.3-build
+ test -d /home/baz/rpmbuild/BUILD/nec2c-1.3.3-build
+ /usr/bin/chmod -Rf a+rX,u+w,g-w,o-w /home/baz/rpmbuild/BUILD/nec2c-1.3.3-build
+ /usr/bin/rm -rf /home/baz/rpmbuild/BUILD/nec2c-1.3.3-build
+ /usr/bin/mkdir -p /home/baz/rpmbuild/BUILD/nec2c-1.3.3-build
+ /usr/bin/mkdir -p /home/baz/rpmbuild/BUILD/nec2c-1.3.3-build/SPECPARTS
+ RPM_EC=0
++ jobs -p
+ exit 0
Executing(%prep): /bin/sh -e /home/baz/rpmbuild/tmp/rpm-tmp.0kq0U4
+ umask 022
+ cd /home/baz/rpmbuild/BUILD/nec2c-1.3.3-build
+ '[' 1 -eq 1 ']'
+ '[' 1 -eq 1 ']'
+ '[' 1 -eq 1 ']'
+ autoreconf -f
autoreconf: error: 'configure.ac' is required
error: Bad exit status from /home/baz/rpmbuild/tmp/rpm-tmp.0kq0U4 (%prep)

RPM build errors:
    Bad exit status from /home/baz/rpmbuild/tmp/rpm-tmp.0kq0U4 (%prep)
I: [iurt_root_command] ERROR: chroot