File 1.patch of Package ghc-rpm-macros

diff --git a/macros.ghc-suse b/macros.ghc-suse
index 3fe39a0..d731ea6 100644
--- a/macros.ghc-suse
+++ b/macros.ghc-suse
@@ -29,4 +29,5 @@ mkdir -p %{buildroot}/usr/src/debug
 %with_ghc_prof 1
 
 # %%{?_smp_ncpus_max:--jobs=%%{?_smp_ncpus_max}}
-%ghc_smp_mflags %{?_smp_mflags}
+# parallel compile causes assignment of random symbol names
+# so for distribution releases we build single-threaded, which is slower, but gives reproducible results