Enable riscv64 as host (incl. WIP riscv backend patch)

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

qemu.spec

@@ -33,7 +33,7 @@
 
 # Matches numactl ExcludeArch
 %global have_numactl 1
-%ifarch s390 %{arm}
+%ifarch s390 %{arm} riscv64
 %global have_numactl 0
 %endif
 
@@ -104,7 +104,7 @@ Requires: %{name}-ui-sdl = %{epoch}:%{version}-%{release}
 Summary: QEMU is a FAST! processor emulator
 Name: qemu
 Version: 2.12.0
-Release: 1%{?rcrel}%{?dist}
+Release: 1%{?rcrel}.0.riscv64%{?dist}
 Epoch: 2
 License: GPLv2 and BSD and MIT and CC-BY
 URL: http://www.qemu.org/
@@ -137,13 +137,20 @@ Source21: 50-kvm-s390x.conf
 # /etc/security/limits.d/95-kvm-ppc64-memlock.conf
 Source22: 95-kvm-ppc64-memlock.conf
 
+# riscv backend
+# Source: https://github.com/riscv/riscv-qemu/commit/0805ad337785f0cce29ecf162bad9e1c477051f3.patch
+# Development: https://github.com/riscv/riscv-qemu/commits/wip-riscv-tcg-backend
+Patch0: qemu-2.12.0-riscv64-backend.patch
+
 # documentation deps
 BuildRequires: texinfo
 # For /usr/bin/pod2man
 BuildRequires: perl-podlators
 # For sanity test
 BuildRequires: qemu-sanity-check-nodeps
+%ifnarch riscv64
 BuildRequires: kernel
+%endif
 %if %{have_iasl}
 # For acpi compilation
 BuildRequires: iasl
@@ -191,15 +198,19 @@ BuildRequires: spice-protocol >= 0.12.2
 BuildRequires: spice-server-devel >= 0.12.0
 %endif
 # seccomp containment support
+%ifnarch riscv64
 BuildRequires: libseccomp-devel >= 2.3.0
+%endif
 # For network block driver
 BuildRequires: libcurl-devel
 # For rbd block driver
 BuildRequires: librados2-devel
 BuildRequires: librbd1-devel
 # We need both because the 'stap' binary is probed for by configure
+%ifnarch riscv64
 BuildRequires: systemtap
 BuildRequires: systemtap-sdt-devel
+%endif
 # For VNC JPEG support
 BuildRequires: libjpeg-devel
 # For VNC PNG support
@@ -247,7 +258,9 @@ BuildRequires: virglrenderer-devel
 # qemu 2.6: Needed for gtk GL support
 BuildRequires: mesa-libgbm-devel
 # qemu 2.11: preferred disassembler for TCG
+%ifnarch riscv64
 BuildRequires: capstone-devel
+%endif
 # qemu 2.12: parallels disk images require libxml2 now
 BuildRequires: libxml2-devel
 # python scripts in the build process
@@ -839,7 +852,7 @@ This package provides the QEMU system emulator for Xtensa boards.
 %build
 
 # drop -g flag to prevent memory exhaustion by linker
-%ifarch s390
+%ifarch s390 riscv64
 %global optflags %(echo %{optflags} | sed 's/-g//')
 sed -i.debug 's/"-g $CFLAGS"/"$CFLAGS"/g' configure
 %endif
@@ -875,12 +888,20 @@ run_configure() {
         --with-pkgversion=%{name}-%{version}-%{release} \
         --disable-strip \
         --disable-werror \
+%ifnarch riscv64
         --enable-kvm \
+%endif
         --python=/usr/bin/python3 \
 %ifarch s390 %{mips64}
         --enable-tcg-interpreter \
 %endif
+%ifarch riscv64
+	--disable-capstone \
+	--disable-seccomp \
+%endif
+%ifnarch riscv64
         --enable-trace-backend=$tracebackends \
+%endif
         --extra-ldflags="$extraldflags -Wl,-z,relro -Wl,-z,now" \
         --extra-cflags="%{optflags}" \
         "$@" || cat config.log
@@ -1663,6 +1684,9 @@ getent passwd qemu >/dev/null || \
 
 
 %changelog
+* Wed May 09 2018 David Abdurachmanov <david.abdurachmanov@gmail.com> - 2:2.12.0-1.0.riscv64
+- Enable riscv64 as host
+
 * Mon Apr 30 2018 Cole Robinson <crobinso@redhat.com> - 2:2.12.0-1
 - Update to qemu-2.12.0 GA