Changes for riscv64

These remove a ton of verbose warnings on riscv64 unregistered build.

RISCV might be unstable with -j higher than 1. This needs retesting.
Last time tested with GHC 9.2 + LLVM 12 and 13, not with the current GHC
9.4 + LLVM 14.

Signed-off-by: David Abdurachmanov <davidlt@rivosinc.com>

macros.ghc

@@ -79,7 +79,7 @@ fi\
 %global _lto_cflags %{nil}\
 %global __brp_strip_lto %{nil}\
 CFLAGS="${CFLAGS:-%optflags}"\
-%ifarch s390x\
+%ifarch s390x riscv64\
 %if %[v"%{ghc_version}" < v"9.2"]\
 # -Wunused-label is extremely noisy\
 CFLAGS="$(echo ${CFLAGS:-%optflags} | sed -e 's/-Wall //' -e 's/-Werror=format-security //')"\

macros.ghc-os

@@ -8,4 +8,4 @@
 %with_haddock 1
 
 # %%{?_smp_ncpus_max:--jobs=%%{?_smp_ncpus_max}}
-%ghc_smp_mflags %{?_smp_mflags}
+%ghc_smp_mflags -j1