Disable documentation on RISC-V (riscv64)

Signed-off-by: David Abdurachmanov <david.abdurachmanov@gmail.com>

scipy.spec

@@ -1,5 +1,10 @@
 # without means enabled
+%ifnarch riscv64
 %bcond_without doc
+%else
+# Avoid failures on RISC-V (riscv64) which kill the build
+%bcond_with doc
+%endif
 
 # Set to pre-release version suffix if building pre-release, else %%{nil}
 %global rcver %{nil}
@@ -7,7 +12,7 @@
 Summary:    Scientific Tools for Python
 Name:       scipy
 Version:    1.1.0
-Release:    3%{?dist}
+Release:    3.0.riscv64%{?dist}
 
 Group:      Development/Libraries
 # BSD -- whole package except:
@@ -222,6 +227,9 @@ popd
 %endif # with doc
 
 %changelog
+* Sun Oct 07 2018 David Abdurachmanov <david.abdurachmanov@gmail.com> - 1.1.0-3.0.riscv64
+- Disable documentation on RISC-V (riscv64)
+
 * Sat Jul 14 2018 Fedora Release Engineering <releng@fedoraproject.org> - 1.1.0-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_29_Mass_Rebuild