Use libcxx prefab (#502)

.gitmodules

@@ -4,9 +4,6 @@
 [submodule "core/src/main/cpp/external/DexBuilder"]
 	path = core/src/main/cpp/external/DexBuilder
 	url = https://github.com/LSPosed/DexBuilder.git
-[submodule "core/src/main/cpp/external/libcxx"]
-	path = core/src/main/cpp/external/libcxx
-	url = https://github.com/topjohnwu/libcxx.git
 [submodule "core/src/main/cpp/external/Dobby"]
 	path = core/src/main/cpp/external/Dobby
 	url = https://github.com/LSPosed/Dobby.git

core/build.gradle.kts

@@ -23,7 +23,6 @@ import org.apache.tools.ant.filters.FixCrLfFilter
 import org.gradle.internal.os.OperatingSystem
 import org.jetbrains.kotlin.daemon.common.toHexString
 import java.io.PrintStream
-import java.nio.file.Paths
 import java.security.MessageDigest
 
 plugins {
@@ -65,6 +64,7 @@ val verName: String by rootProject.extra
 
 dependencies {
     implementation("dev.rikka.ndk:riru:${moduleMinRiruVersionName}")
+    implementation("dev.rikka.ndk.thirdparty:cxx:1.1.0")
     implementation("com.android.tools.build:apksig:4.1.3")
     implementation("org.apache.commons:commons-lang3:3.12.0")
     implementation("de.upb.cs.swt:axml:2.1.1")
@@ -186,41 +186,6 @@ android {
     }
 }
 
-fun findInPath(executable: String): String? {
-    val pathEnv = System.getenv("PATH")
-    return pathEnv.split(File.pathSeparator).map { folder ->
-        Paths.get("${folder}${File.separator}${executable}${if (isWindows) ".exe" else ""}")
-            .toFile()
-    }.firstOrNull { path ->
-        path.exists()
-    }?.absolutePath
-}
-
-task("buildLibcxx", Exec::class) {
-    val ndkDir = android.ndkDirectory
-    executable = "$ndkDir/${if (isWindows) "ndk-build.cmd" else "ndk-build"}"
-    workingDir = projectDir
-    findInPath("ccache")?.let {
-        println("using ccache $it")
-        environment("NDK_CCACHE", it)
-        environment("USE_CCACHE", "1")
-    } ?: run {
-        println("not using ccache")
-    }
-
-    setArgs(
-        arrayListOf(
-            "NDK_PROJECT_PATH=build/intermediates/ndk",
-            "APP_BUILD_SCRIPT=$projectDir/src/main/cpp/external/libcxx/Android.mk",
-            "APP_CPPFLAGS=-std=c++20",
-            "APP_STL=none",
-            "-j${Runtime.getRuntime().availableProcessors()}"
-        )
-    )
-}
-
-tasks.getByName("preBuild").dependsOn("buildLibcxx")
-
 android.applicationVariants.all {
     val variantCapped = name.capitalize()
     val variantLowered = name.toLowerCase()

core/src/main/cpp/CMakeLists.txt

@@ -27,7 +27,8 @@ if (CCACHE)
     set(CMAKE_C_COMPILER_LAUNCHER ${CCACHE})
 endif ()
 
-include_directories(external/libcxx/include)
+find_package(cxx REQUIRED CONFIG)
+link_libraries(cxx::cxx)
 
 add_subdirectory(main)
 add_subdirectory(external)

core/src/main/cpp/external/CMakeLists.txt

@@ -15,6 +15,3 @@ if (NOT CMAKE_BUILD_TYPE STREQUAL "Debug")
 endif (NOT CMAKE_BUILD_TYPE STREQUAL "Debug")
 add_subdirectory(Dobby)
 target_include_directories(dobby PUBLIC Dobby/include)
-
-add_library(libcxx STATIC IMPORTED GLOBAL)
-set_property(TARGET libcxx PROPERTY IMPORTED_LOCATION ${CMAKE_CURRENT_SOURCE_DIR}/../../../../build/intermediates/ndk/obj/local/${CMAKE_ANDROID_ARCH_ABI}/libcxx.a)

core/src/main/cpp/external/libcxx

@@ -1 +0,0 @@
-Subproject commit f61fcee091736dd0ae38670876157e9862ac6ff8

core/src/main/cpp/main/CMakeLists.txt

@@ -30,7 +30,7 @@ add_library(lspd SHARED ${SRC_LIST} ${SRC_JNI_LIST} ${CMAKE_CURRENT_BINARY_DIR}/
 
 find_package(riru REQUIRED CONFIG)
 find_library(log-lib log)
-target_link_libraries(lspd yahfa riru::riru android dobby dex_builder libcxx ${log-lib})
+target_link_libraries(lspd yahfa riru::riru android dobby dex_builder ${log-lib})
 
 add_custom_command(TARGET lspd POST_BUILD
         COMMAND ${CMAKE_STRIP} --remove-section=.comment -g "${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/liblspd.so")