Initial pass of getting newlib to compile

.gitignore

@@ -46,3 +46,8 @@ core
 !core/
 
 lost+found
+
+Makefile
+build/
+
+.vscode

config.sub

@@ -1255,7 +1255,8 @@ case $cpu-$vendor in
 			| x86 | x86_64 | xc16x | xgate | xps100 \
 			| xstormy16 | xtensa* \
 			| ymp \
-			| z8k | z80)
+			| z8k | z80 \
+			| lc_3.2)
 				;;
 
 			*)

flake.nix

@@ -0,0 +1,89 @@
+{
+  description = "Newlib for LC-3.2 Development and Build Environment";
+
+  inputs = {
+    nixpkgs-23-05.url = "github:NixOS/nixpkgs/release-23.05";
+    flake-utils.url = "github:numtide/flake-utils";
+
+    # We have to use SSH here since the repository is private
+    llvm-lc-3-2.url = "git+ssh://git@github.com/lc-3-2/llvm.git";
+  };
+
+  outputs = { self, nixpkgs-23-05, flake-utils, llvm-lc-3-2 }@inputs :
+    flake-utils.lib.eachSystem ["x86_64-linux"] (system:
+    let
+      name = "newlib-lc-3.2-dev";
+      pkgs = nixpkgs-23-05.legacyPackages.${system};
+      inherit (pkgs) stdenv;
+
+      nativeBuildInputs = [
+        pkgs.texinfo
+
+        # Usually, we would add custom packages with an overlay, but that adds a
+        # lot of complexity. Thus, we fetch the package manually.
+        llvm-lc-3-2.packages.${system}.lc-3-2
+      ];
+
+    in {
+
+      packages = rec {
+        default = newlib-lc-3-2;
+
+        newlib-lc-3-2 = stdenv.mkDerivation {
+          inherit name nativeBuildInputs;
+
+          src = self;
+
+          configurePhase = ''
+            mkdir ./build/
+            pushd ./build/
+
+            CC_FOR_TARGET="clang" \
+            CXX_FOR_TARGET="clang++" \
+            AS_FOR_TARGET="llvm-mc" \
+            LD_FOR_TARGET="ld.lld" \
+            AR_FOR_TARGET="llvm-ar" \
+            RANLIB_FOR_TARGET="llvm-ranlib" \
+            STRIP_FOR_TARGET="llvm-strip" \
+            OBJCOPY_FOR_TARGET="llvm-objcopy" \
+            OBJDUMP_FOR_TARGET="llvm-objdump" \
+            READELF_FOR_TARGET="llvm-readelf" \
+            NM_FOR_TARGET="llvm-nm" \
+            DLLTOOL_FOR_TARGET="llvm-dlltool" \
+            LIPO_FOR_TARGET="llvm-lipo" \
+            WINDRES_FOR_TARGET="llvm-windres" \
+            CFLAGS_FOR_TARGET="-nostdlib -D__IEEE_LITTLE_ENDIAN -v" \
+            ../configure \
+              --host=x86_64-pc-linux-gnu --target=lc_3.2 \
+              --prefix=$out \
+              --disable-multilib
+
+            popd
+          '';
+
+          buildPhase = "make -C ./build/";
+          installPhase = "make -C ./build/ install";
+        };
+      };
+
+      devShells = rec {
+        default = newlib-lc-3-2;
+
+        newlib-lc-3-2 = pkgs.mkShell {
+          inherit name nativeBuildInputs;
+
+          # Add autotools in case we need to modify and regenerate. We don't
+          # mark this as a nativeBuildInput for the package since this is only
+          # done when we push changes.
+          buildInputs = [
+            pkgs.autoconf269
+            pkgs.automake115x
+          ];
+
+          shellHook = ''
+            export PS1="(${name}) [\u@\h \W]\$ "
+          '';
+        };
+      };
+    });
+}

newlib/configure.host

@@ -377,6 +377,8 @@ case "${host_cpu}" in
 	newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"
 	newlib_cflags="${newlib_cflags} -ffunction-sections -fdata-sections "
 	;;
+  lc_3.2)
+	;;
   *)
 	echo '***' "Newlib does not support CPU ${host_cpu}" 1>&2
 	exit 1