sm8150-common: libinit: Introduce libvariant and related Soong select

Change-Id: I1aa99abc47d483cba2a0552e497667212919358c

libinit/Android.bp

@@ -1,25 +1,24 @@
 //
-// Copyright (C) 2021 The LineageOS Project
+// Copyright (C) 2021-2025 The LineageOS Project
 //
 // SPDX-License-Identifier: Apache-2.0
 //
 
 cc_library_static {
-    name: "libinit_xiaomi_msmnile",
+    name: "init_xiaomi_msmnile",
     srcs: [
+        "init_xiaomi_msmnile.cpp",
         "libinit_dalvik_heap.cpp",
         "libinit_variant.cpp",
         "libinit_utils.cpp",
     ],
-    whole_static_libs: ["libbase"],
-    export_include_dirs: ["include"],
-    recovery_available: true,
-}
-
-cc_library_static {
-    name: "init_xiaomi_msmnile",
-    srcs: ["init_xiaomi_msmnile.cpp"],
-    whole_static_libs: ["libinit_xiaomi_msmnile"],
+    header_libs: ["libvariant_headers"],
+    whole_static_libs: [
+        "libbase",
+    ] + select(soong_config_variable("xiaomi_msmnile", "variant_lib"), {
+        any @ lib: [lib],
+        default: ["libvariant_default"],
+    }),
     include_dirs: ["system/core/init"],
     recovery_available: true,
 }

libinit/include/libinit_variant.h

@@ -6,22 +6,10 @@
 
 #pragma once
 
-#include <string>
+#include <libvariant.h>
+
 #include <vector>
 
-struct variant_info {
-    std::string hwc_value;
-    std::string sku_value;
-
-    std::string brand;
-    std::string device;
-    std::string marketname;
-    std::string model;
-    std::string build_fingerprint;
-
-    bool nfc;
-};
-
 void search_variant(const std::vector<variant_info>& variants);
 
 void set_variant_props(const variant_info& variant);

libinit/init_xiaomi_msmnile.cpp

@@ -7,7 +7,12 @@
 #include "vendor_init.h"
 
 #include "include/libinit_dalvik_heap.h"
+#include "include/libinit_variant.h"
+
+#include <libvariant.h>
 
 void vendor_load_properties() {
+    search_variant(variants);
+
     set_dalvik_heap();
 }

libinit/libinit_variant.cpp

@@ -10,6 +10,7 @@
 
 #include <android-base/logging.h>
 #include <android-base/properties.h>
+#include <string>
 
 using android::base::GetProperty;
 

libinit/libvariant_default/Android.bp

@@ -0,0 +1,12 @@
+//
+// Copyright (C) 2025 The LineageOS Project
+//
+// SPDX-License-Identifier: Apache-2.0
+//
+
+cc_library_static {
+    name: "libvariant_default",
+    srcs: ["libvariant_default.cpp"],
+    header_libs: ["libvariant_headers"],
+    recovery_available: true,
+}

libinit/libvariant_default/libvariant_default.cpp

@@ -0,0 +1,9 @@
+/*
+ * Copyright (C) 2025 The LineageOS Project
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <libvariant.h>
+
+const std::vector<variant_info> variants;

libinit/libvariant_headers/Android.bp

@@ -0,0 +1,11 @@
+//
+// Copyright (C) 2025 The LineageOS Project
+//
+// SPDX-License-Identifier: Apache-2.0
+//
+
+cc_library_headers {
+    name: "libvariant_headers",
+    export_include_dirs: ["include"],
+    recovery_available: true,
+}

libinit/libvariant_headers/include/libvariant.h

@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2021-2025 The LineageOS Project
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#pragma once
+
+#include <string>
+#include <vector>
+
+struct variant_info {
+    std::string hwc_value;
+    std::string sku_value;
+
+    std::string brand;
+    std::string device;
+    std::string marketname;
+    std::string model;
+    std::string build_fingerprint;
+
+    bool nfc;
+};
+
+extern const std::vector<variant_info> variants;