Merge pull request #131310 from siraben/m86k-cross

Initial implementation of m68k cross-compile

lib/systems/doubles.nix

···
     "aarch64-linux" "armv5tel-linux" "armv6l-linux" "armv7a-linux"
     "armv7l-linux" "i686-linux" "mipsel-linux" "powerpc64-linux"
     "powerpc64le-linux" "riscv32-linux" "riscv64-linux" "x86_64-linux"
+    "m68k-linux"
 
     # MMIXware
     "mmix-mmixware"
···
 
     # none
     "aarch64-none" "arm-none" "armv6l-none" "avr-none" "i686-none" "msp430-none"
-    "or1k-none" "powerpc-none" "riscv32-none" "riscv64-none" "vc4-none"
+    "or1k-none" "powerpc-none" "riscv32-none" "riscv64-none" "vc4-none" "m68k-none"
     "x86_64-none"
 
     # OpenBSD
···
   riscv         = filterDoubles predicates.isRiscV;
   vc4           = filterDoubles predicates.isVc4;
   or1k          = filterDoubles predicates.isOr1k;
+  m68k          = filterDoubles predicates.isM68k;
   js            = filterDoubles predicates.isJavaScript;
 
   bigEndian     = filterDoubles predicates.isBigEndian;

lib/systems/examples.nix

···
     libc = "newlib";
   };
 
+  m68k = {
+    config = "m68k-unknown-linux-gnu";
+  };
+
   arm-embedded = {
     config = "arm-none-eabi";
     libc = "newlib";

lib/systems/inspect.nix

···
     isAvr          = { cpu = { family = "avr"; }; };
     isAlpha        = { cpu = { family = "alpha"; }; };
     isOr1k         = { cpu = { family = "or1k"; }; };
+    isM68k         = { cpu = { family = "m68k"; }; };
     isJavaScript   = { cpu = cpuTypes.js; };
 
     is32bit        = { cpu = { bits = 32; }; };

lib/systems/parse.nix

···
 
     mmix     = { bits = 64; significantByte = bigEndian;    family = "mmix"; };
 
+    m68k     = { bits = 32; significantByte = bigEndian; family = "m68k"; };
+
     powerpc  = { bits = 32; significantByte = bigEndian;    family = "power"; };
     powerpc64 = { bits = 64; significantByte = bigEndian; family = "power"; };
     powerpc64le = { bits = 64; significantByte = littleEndian; family = "power"; };

lib/tests/systems.nix

···
   testredox = mseteq redox [ "x86_64-redox" ];
   testgnu = mseteq gnu (linux /* ++ kfreebsd ++ ... */);
   testillumos = mseteq illumos [ "x86_64-solaris" ];
-  testlinux = mseteq linux [ "aarch64-linux" "armv5tel-linux" "armv6l-linux" "armv7a-linux" "armv7l-linux" "i686-linux" "mipsel-linux" "riscv32-linux" "riscv64-linux" "x86_64-linux" "powerpc64-linux" "powerpc64le-linux" ];
+  testlinux = mseteq linux [ "aarch64-linux" "armv5tel-linux" "armv6l-linux" "armv7a-linux" "armv7l-linux" "i686-linux" "mipsel-linux" "riscv32-linux" "riscv64-linux" "x86_64-linux" "powerpc64-linux" "powerpc64le-linux" "m68k-linux" ];
   testnetbsd = mseteq netbsd [ "aarch64-netbsd" "armv6l-netbsd" "armv7a-netbsd" "armv7l-netbsd" "i686-netbsd" "mipsel-netbsd" "powerpc-netbsd" "riscv32-netbsd" "riscv64-netbsd" "x86_64-netbsd" ];
   testopenbsd = mseteq openbsd [ "i686-openbsd" "x86_64-openbsd" ];
   testwindows = mseteq windows [ "i686-cygwin" "x86_64-cygwin" "i686-windows" "x86_64-windows" ];

pkgs/build-support/bintools-wrapper/default.nix

···
       else if targetPlatform.isAlpha then "alpha"
       else if targetPlatform.isVc4 then "vc4"
       else if targetPlatform.isOr1k then "or1k"
+      else if targetPlatform.isM68k then "m68k"
       else if targetPlatform.isRiscV then "lriscv"
       else throw "unknown emulation for platform: ${targetPlatform.config}";
     in if targetPlatform.useLLVM or false then ""