add native aot

Author: waruqi

tests/projects/csharp/native_aot/src/app/main.cpp

@@ -0,0 +1,12 @@
+#include <stdio.h>
+
+extern "C" {
+    int cs_add(int a, int b);
+    int cs_multiply(int a, int b);
+}
+
+int main() {
+    printf("cs_add(3,4)=%d\n", cs_add(3, 4));
+    printf("cs_multiply(5,6)=%d\n", cs_multiply(5, 6));
+    return 0;
+}

tests/projects/csharp/native_aot/src/cslib/MathLib.cs

@@ -0,0 +1,9 @@
+using System.Runtime.InteropServices;
+
+public static class MathLib {
+    [UnmanagedCallersOnly(EntryPoint = "cs_add")]
+    public static int Add(int a, int b) => a + b;
+
+    [UnmanagedCallersOnly(EntryPoint = "cs_multiply")]
+    public static int Multiply(int a, int b) => a * b;
+}

tests/projects/csharp/native_aot/test.lua

@@ -0,0 +1,13 @@
+import("detect.sdks.find_dotnet")
+
+function test_build(t)
+    if is_subhost("msys") then
+        return t:skip("csharp not supported on msys")
+    end
+    local dotnet = find_dotnet()
+    if dotnet and dotnet.sdkver then
+        t:build()
+    else
+        return t:skip("dotnet sdk not found")
+    end
+end

tests/projects/csharp/native_aot/xmake.lua

@@ -0,0 +1,11 @@
+add_rules("mode.debug", "mode.release")
+
+target("cslib")
+    set_kind("shared")
+    add_files("src/cslib/*.cs")
+    set_values("csharp.publish_aot", "true")
+
+target("app")
+    set_kind("binary")
+    add_deps("cslib")
+    add_files("src/app/*.cpp")

xmake/modules/core/tools/dotnet.lua

@@ -97,7 +97,10 @@ end
 
 -- make the build arguments list
 function buildargv(self, sourcefiles, targetkind, targetfile, flags, opt)
-    local argv = {"build"}
+    -- use `dotnet publish` for NativeAOT, otherwise `dotnet build`
+    local target = opt and opt.target
+    local publish_aot = target and target:values("csharp.publish_aot")
+    local argv = {publish_aot and "publish" or "build"}
 
     -- add .csproj file
     local csprojfile = _get_csprojfile(opt)
@@ -123,4 +126,11 @@ function build(self, sourcefiles, targetkind, targetfile, flags, opt)
     os.mkdir(path.directory(targetfile))
     local program, argv = buildargv(self, sourcefiles, targetkind, targetfile, flags, opt)
     os.runv(program, argv, {envs = self:runenvs()})
+
+    -- fix install_name for NativeAOT shared library on macOS
+    local target = opt and opt.target
+    local publish_aot = target and target:values("csharp.publish_aot")
+    if publish_aot and targetkind == "shared" and self:is_plat("macosx", "iphoneos", "watchos") then
+        os.runv("install_name_tool", {"-id", "@rpath/" .. path.filename(targetfile), targetfile})
+    end
 end

xmake/rules/csharp/config.lua

@@ -45,6 +45,14 @@ function main(target)
 
     target:data_set("csharp.csproj", csprojfile)
 
+    -- for NativeAOT shared library, export targetfile directly for C/C++ consumers
+    -- dotnet outputs without lib prefix, so we use syslinks with full path
+    local publish_aot = target:values("csharp.publish_aot")
+    if publish_aot and target:is_shared() then
+        target:data_set("inherit.links.deplink", false)
+        target:add("ldflags", target:targetfile(), {interface = true, force = true})
+    end
+
     -- add native shared library search paths for P/Invoke
     for _, dep in ipairs(target:orderdeps()) do
         if dep:is_shared() and not dep:rule("csharp.build") then

xmake/rules/csharp/generator/properties.lua

@@ -67,6 +67,27 @@ function _resolve_assembly_name(context)
 end
 
 
+-- resolve runtime identifier from user config or auto-detect from target plat/arch
+-- e.g. "osx-x64", "osx-arm64", "linux-x64", "win-x64"
+function _resolve_runtime_identifier(context)
+    local rid = _get_target_value(context.target, "csharp.runtime_identifier")
+    if rid then
+        return rid
+    end
+    -- auto-detect RID when publish_aot is enabled
+    local publish_aot = _get_target_value(context.target, "csharp.publish_aot")
+    if not publish_aot then
+        return nil
+    end
+    local target = context.target
+    local plat = target:plat()
+    local arch = target:arch()
+    local rid_arch = ({x86_64 = "x64", i386 = "x86", x64 = "x64", x86 = "x86",
+                       arm64 = "arm64", ["arm64-v8a"] = "arm64", armv7 = "arm"})[arch] or arch
+    local rid_os = ({macosx = "osx", linux = "linux", windows = "win", mingw = "win"})[plat] or plat
+    return rid_os .. "-" .. rid_arch
+end
+
 -- register a single-value csharp.* property entry
 function _register_property(register, suffix, xml, default, extra)
     local entry = table.join({
@@ -128,7 +149,7 @@ function main()
     _register_property(register, "generate_documentation_file", "GenerateDocumentationFile")
     _register_property(register, "documentation_file", "DocumentationFile")
 
-    _register_property(register, "runtime_identifier", "RuntimeIdentifier")
+    register({kind = "property", xml = "RuntimeIdentifier", resolve = _resolve_runtime_identifier})
     _register_list_property(register, "runtime_identifiers", "RuntimeIdentifiers")
     _register_property(register, "self_contained", "SelfContained")
     _register_property(register, "use_app_host", "UseAppHost")

xmake/rules/csharp/xmake.lua

@@ -115,10 +115,14 @@
 rule("csharp.build")
     set_sourcekinds("cs")
     on_load(function (target)
-        -- dotnet always outputs .dll for libraries, and no prefix
         if target:is_shared() or target:is_static() then
+            -- dotnet always outputs without lib prefix
             target:set("prefixname", "")
-            target:set("extension", ".dll")
+            -- managed libraries use .dll, NativeAOT uses native format (.dylib/.so/.dll)
+            local publish_aot = target:values("csharp.publish_aot")
+            if not publish_aot then
+                target:set("extension", ".dll")
+            end
         end
     end)
     on_config("config")