Add SPEC CPU 2017 benchmarks

pkgs/spec-cpu/default.nix

@@ -0,0 +1,59 @@
+{
+  stdenv
+, spec-cpu-tools
+, libarchive
+, xz
+, gnutar
+, gfortran
+, coreutils
+, requireFile
+, autoPatchelfHook
+, libxcrypt-legacy
+, lib
+}:
+
+stdenv.mkDerivation rec {
+  pname = "spec-cpu";
+  version = "1.1.7";
+  src = null;
+  unpackPhase = "true";
+  # We need a working specxz binary
+  config = ./gcc-linux-x86.cfg;
+  buildPhase = ''
+    cp ${config} config.cfg
+    chmod +w config.cfg
+    export SPEC_NOCHECK=1
+    mkdir out
+    runcpu \
+      --verbose=80 \
+      --tune=base \
+      --output_root=$PWD/out \
+      --config=$PWD/config.cfg \
+      --define build_ncpus=$NIX_BUILD_CORES \
+      --action=runsetup \
+      all
+  '';
+  # 519.lbm_r
+  # 502.gcc_r
+  # all
+
+  # We only need the run directories
+  installPhase = ''
+    # Remove build/ and exe/ directories, we only need run/
+    rm -rf out/benchspec/CPU/*/build/
+    rm -rf out/benchspec/CPU/*/exe/
+
+    mkdir -p $out
+    cp -a out/benchspec $out
+  '';
+
+  #buildInputs = [ ];
+  nativeBuildInputs = [ spec-cpu-tools gfortran ];
+  enableParallelBuilding = false;
+  hardeningDisable = [ "all" ];
+  dontStrip = true;
+
+  meta.broken = (stdenv.buildPlatform.config != "x86_64-unknown-linux-gnu") ||
+    (stdenv.hostPlatform.config != "riscv64-unknown-linux-gnu") || 
+    (stdenv.targetPlatform.config != "riscv64-unknown-linux-gnu");
+}