build: initial support for building nemu, am-kernels with nix

nemu/default.nix

@@ -0,0 +1,49 @@
+{ pkgs,
+  lib,
+  stdenv
+}:
+
+stdenv.mkDerivation rec {
+  pname = "nemu";
+  version = "2024-03-02";
+
+  src = ./.;
+
+  NEMU_HOME = "/build/nemu";
+  nativeBuildInputs = with pkgs; [
+    gnumake
+    flex
+    bison
+  ];
+
+  buildInputs = with pkgs; [
+    check
+    readline
+    libllvm
+  ];
+
+  configurePhase = ''
+    echo pwd=$(pwd)
+    make alldefconfig
+  '';
+
+  buildPhase = ''
+    make
+  '';
+
+  checkPhase = ''
+    make test
+  '';
+
+  installPhase = ''
+    mkdir -p $out/bin
+    make PREFIX=$out install
+  '';
+
+  meta = with lib; {
+    description = "NJU EMUlator, a full system x86/mips32/riscv32/riscv64 emulator for teaching";
+    homepage = "https://github.com/NJU-ProjectN/nemu.git";
+    license = with licenses; [ ];
+    maintainers = with maintainers; [ ];
+  };
+}

nemu/flake.lock

@@ -1,82 +0,0 @@
-{
-  "nodes": {
-    "flake-utils": {
-      "inputs": {
-        "systems": "systems"
-      },
-      "locked": {
-        "lastModified": 1701680307,
-        "narHash": "sha256-kAuep2h5ajznlPMD9rnQyffWG8EM/C73lejGofXvdM8=",
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "rev": "4022d587cbbfd70fe950c1e2083a02621806a725",
-        "type": "github"
-      },
-      "original": {
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "type": "github"
-      }
-    },
-    "nixpkgs": {
-      "locked": {
-        "lastModified": 1704722960,
-        "narHash": "sha256-mKGJ3sPsT6//s+Knglai5YflJUF2DGj7Ai6Ynopz0kI=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "317484b1ead87b9c1b8ac5261a8d2dd748a0492d",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "nixos-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "nur-xin": {
-      "inputs": {
-        "nixpkgs": [
-          "nixpkgs"
-        ]
-      },
-      "locked": {
-        "lastModified": 1704680562,
-        "narHash": "sha256-ffec3HL8OgbHB/TvLHILvC3ylou6N+KDtrn4qYVV+U4=",
-        "ref": "refs/heads/master",
-        "rev": "8adf33b6fdd113c645d83feda28622a0b1ef9f83",
-        "revCount": 144,
-        "type": "git",
-        "url": "https://git.xinyang.life/xin/nur.git"
-      },
-      "original": {
-        "type": "git",
-        "url": "https://git.xinyang.life/xin/nur.git"
-      }
-    },
-    "root": {
-      "inputs": {
-        "flake-utils": "flake-utils",
-        "nixpkgs": "nixpkgs",
-        "nur-xin": "nur-xin"
-      }
-    },
-    "systems": {
-      "locked": {
-        "lastModified": 1681028828,
-        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
-        "owner": "nix-systems",
-        "repo": "default",
-        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-systems",
-        "repo": "default",
-        "type": "github"
-      }
-    }
-  },
-  "root": "root",
-  "version": 7
-}

nemu/flake.nix

@@ -1,80 +0,0 @@
-{
-  inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
-    flake-utils.url = "github:numtide/flake-utils";
-    nur-xin = {
-      url = "git+https://git.xinyang.life/xin/nur.git";
-      inputs.nixpkgs.follows = "nixpkgs";
-    };
-  };
-
-  outputs = { self, ... }@inputs: with inputs;
-    flake-utils.lib.eachDefaultSystem (system:
-      let
-        pkgs = nixpkgs.legacyPackages.${system} //
-          { nur.xin = nur-xin.legacyPackages.${system}; };
-      in
-      {
-        devShells.default = with pkgs; mkShell {
-          packages = [
-            clang-tools
-            rnix-lsp
-            bear
-
-            gdb
-            jre
-
-            gtkwave
-          ];
-
-          inputsFrom = [ self.packages.${system}.nemu ];
-        };
-
-        packages.nemu = with pkgs; stdenv.mkDerivation rec {
-          pname = "nemu";
-          version = "2024-01-02";
-
-          src = ./.;
-
-          nativeBuildInputs = [
-            gnumake
-            flex
-            bison
-            pkg-config
-            python3       # for testing
-          ];
-
-          buildInputs = [
-            check
-            readline
-            libllvm
-          ];
-
-          configurePhase = ''
-            echo NEMU_HOME=$NEMU_HOME
-            echo pwd=$(pwd)
-            mkdir -p $(pwd)/kconfig
-            WORK_DIR=$(pwd) obj=$(pwd)/kconfig make --trace -e -f scripts/config.mk WORK_DIR=$(pwd) obj=$(pwd)/kconfig rv32_defconfig
-          '';
-
-          installPhase = ''
-            BUILD_DIR=$out make install
-          '';
-
-          checkPhase = ''
-            BUILD_DIR=$out make test
-          '';
-
-          NEMU_HOME = src;
-
-          meta = with lib; {
-            description = "NJU EMUlator, a full system x86/mips32/riscv32/riscv64 emulator for teaching";
-            homepage = "https://github.com/NJU-ProjectN/nemu.git";
-            license = with licenses; [ ];
-            maintainers = with maintainers; [ ];
-          };
-        };
-      }
-    );
-}
-

nemu/scripts/config.mk

@@ -48,6 +48,9 @@ menuconfig: $(MCONF) $(CONF) $(FIXDEP)
 savedefconfig: $(CONF)
 	$(Q)$< $(silent) --$@=configs/defconfig $(Kconfig)
 
+alldefconfig: $(CONF) $(FIXDEP)
+	$(Q)$(CONF) $(silent) --$@ $(Kconfig)
+
 %defconfig: $(CONF) $(FIXDEP)
 	$(Q)$< $(silent) --defconfig=configs/$@ $(Kconfig)
 	$(Q)$< $(silent) --syncconfig $(Kconfig)
@@ -60,7 +63,7 @@ help:
 	@echo  '  savedefconfig   - Save current config as configs/defconfig (minimal config)'
 
 distclean: clean
-	-@rm -rf $(rm-distclean)
+	-rm -rf $(rm-distclean)
 
 .PHONY: help distclean