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你好，我这边手头的核心代码本身生成的.a size在优化后是2.6mb, 发现用rsbind生成bridge代码后再统一生成.a文件 size直接就涨到9mb, 是否是引用了额外的std symbol导致的，请问有没有什么手段能把目前用不到的一些bridge能力和相关依赖去掉。。

process '"cargo" "rustc" "--target" "x86_64-linux-android" "--lib" "--target-dir" "target" "--release" "--" "-L" "target/cargo-apk-temp-extra-link-libraries"' finished with: exit status: 0
/usr/local/Caskroom/android-ndk/23b/android-ndk-r23b/toolchains/llvm/prebuilt/darwin-x86_64/bin/llvm-strip: error: 'target/x86_64-linux-android/release/demo': No such file or directory
/usr/local/Caskroom/android-ndk/23b/android-ndk-r23b/toolchains/llvm/prebuilt/darwin-x86_64/bin/llvm-strip: error: 'target/x86_64-linux-android/release/demo': No such file or directory
process '"/usr/local/Caskroom/android-ndk/23b/android-ndk-r23b/toolchains/llvm/prebuilt/darwin-x86_64/bin/llvm-strip" "-s" "target/x86_64-linux-android/release/demo"' finished with: exit status: 1

你好，我在android demo工程中尝试callback调用，必现闪退，其他test方法调用倒是ok的，调用代码和闪退信息如下：

`TestContract1.test_arg_callback(new Callback() {
@OverRide
public byte on_callback_u8(byte arg1) {
return 0;
}

        @Override
        public byte on_callback_i8(byte arg1) {
            return 0;
        }

        @Override
        public int on_callback(int arg1, String arg2, boolean arg3, float arg4, double arg5) {
            return 0;
        }

        @Override
        public boolean on_callback2(boolean arg1) {
            return false;
        }

        @Override
        public boolean on_callback_complex(StructSimple arg1) {
            return false;
        }

        @Override
        public boolean on_callback_arg_vec(StructSimple[] arg1) {
            return false;
        }

        @Override
        public boolean on_callback_arg_vec_simple(String[] arg1) {
            return false;
        }

        @Override
        public void on_empty_callback() {

        }
    });`

崩溃信息
A/libc: Fatal signal 6 (SIGABRT), code -1 (SI_QUEUE) in tid 10286 (ple.com.android), pid 10286 (ple.com.android)

I'm trying to develop Android apps by Rust. But when I try to debug it, I can't find the direct way to touch this, only by command lines.
Is there any way more?

https://developer.android.com/ndk/guides/other_build_systems

As of NDK r19, the toolchains installed by default with the NDK may be used in-place. The make_standalone_toolchain.py script is no longer needed for interfacing with arbitrary build systems.

To ensure that you build for the correct architecture, either pass the appropriate target with -target when invoking Clang, or invoke the target-prefixed Clang. For example, to compile for 64-bit ARM Android with a minSdkVersion of 21, either of the following will work and you may use whichever you find most convenient:

module compiled with Swift 4.2.1 cannot be imported by the Swift 5.0.1 compiler

Json serilization and parsing is not good at performance.

可以添加 Java 和 Objective-C 示例吗?