try to fix

support-files/mysql.spec.sh

@@ -671,7 +671,7 @@ fi
 
 %doc %attr(644, root, root) %{_infodir}/mysql.info*
 
-%if %{fileexists %{_mandir}/man1/innochecksum.1*}
+%if %{fileexists $RPM_BUILD_ROOT%{_mandir}/man1/innochecksum.1*}
 %doc %attr(644, root, man) %{_mandir}/man1/innochecksum.1*
 %endif
 %doc %attr(644, root, man) %{_mandir}/man1/my_print_defaults.1*
@@ -703,7 +703,7 @@ fi
 
 %ghost %config(noreplace,missingok) %{_sysconfdir}/my.cnf
 
-%if %{fileexists %{_bindir}/innochecksum}
+%if %{fileexists $RPM_BUILD_ROOT%{_bindir}/innochecksum}
 %attr(755, root, root) %{_bindir}/innochecksum
 %endif
 %attr(755, root, root) %{_bindir}/my_print_defaults