work on implementing xtool

fpc/apple/build.cpp

@@ -0,0 +1,47 @@
+#include "c.h"
+#include "swift.h"
+#include "ld.h"
+#include "helper.h"
+#include "tier0/platform.h"
+#include "tier1/interface.h"
+
+ADD_DEPENDENCY_BUILD_FILE(tier1, "../../tier1/build.cpp");
+
+DECLARE_BUILD_STAGE(xtool_backend)
+{
+	if (!linker->IsLibraryExists("swiftCore"))
+	{
+		V_printf("Swift is not installed\n");
+		return 0;
+	}
+
+
+	ISwiftCompiler *swiftcompiler = NULL;
+	if (swiftcompiler == NULL)
+	{
+		CreateInterfaceFn pLibFPCFactory = Sys_GetFactory("fpc");
+		swiftcompiler = (ISwiftCompiler*)pLibFPCFactory(SWIFT_COMPILER_INTERFACE_VERSION, NULL);
+
+		if (swiftcompiler == NULL)
+			return 0;
+	}
+
+	SwiftProject_t compileProject = {};
+	LinkProject_t ldProject = {};
+
+	compileProject.m_szName = "xtool";
+	compileProject.files = {
+		"xtool/sign.swift"
+	};
+
+	ldProject = swiftcompiler->Compile(&compileProject);
+	ldProject.linkType = ELINK_STATIC_LIBRARY;
+
+	CUtlString outputProject = linker->Link(&ldProject);
+
+
+	ADD_OUTPUT_OBJECT("xtool", outputProject)
+
+	return 0;
+};
+