rebuild without -O0 for s390x

xmobar.spec

@@ -12,7 +12,7 @@
 Name:           %{pkg_name}
 Version:        0.29.4
 # can only be reset when all subpkgs bumped
-Release:        4%{?dist}
+Release:        5%{?dist}
 Summary:        A minimalistic text-based status bar
 
 License:        BSD
@@ -115,10 +115,6 @@ This package provides the Haskell %{name} library development files.
 
 
 %build
-# https://ghc.haskell.org/trac/ghc/ticket/15853
-%ifarch s390x
-cabal_configure_extra_options="--ghc-option=-O0"
-%endif
 # Begin cabal-rpm build:
 %ghc_libs_build %{subpkgs}
 %ghc_lib_build
@@ -173,6 +169,9 @@ install --mode=0755 -p examples/xmonadpropwrite %{buildroot}%{_bindir}/xmonadpro
 
 
 %changelog
+* Mon Mar  4 2019 Jens Petersen <petersen@redhat.com> - 0.29.4-5
+- rebuild without -O0 for s390x
+
 * Sat Feb 23 2019 Jens Petersen <petersen@redhat.com> - 0.29.4-4
 - update to 0.29.4
 - now binlib