“找不到cstdarg文件"；在Rust项目的C绑定上运行jextract时

问题描述

我正在尝试用Java的Project Panama使用Rust编写一个简单的整数加法函数.使用 cbindgen 条板箱生成了绑定后，运行jextract时出现以下错误:

I'm trying to get a simple integer addition function written in Rust working with Java's Project Panama. Having generated the bindings using cbindgen crate, I get the following error when running jextract:

jextract -t org.adder -L . -l adder-java --record-library-path -I /Library/Developer/CommandLineTools/usr/include/c++/v1/cstdarg bindings.h -o adder-java.jar
java.lang.RuntimeException: /Users/ash/Code/adder/bindings.h:1:10: fatal error: 'cstdarg' file not found

我查看了示例给出了，但无法解读我出了什么问题.

I've looked at the examples given, but can't decipher what I'm getting wrong.

这是我的图书馆文件:

#[no_mangle]
pub extern "C" fn addition(a: u32, b: u32) -> u32 {
    a + b
}

以及生成的绑定(我想还需要 cstdint ， cstdlib 和 new 的源):

And the generated bindings (will also need sources for cstdint, cstdlib and new I presume?):

#include <cstdarg>
#include <cstdint>
#include <cstdlib>
#include <new>

extern "C" {

uint32_t addition(uint32_t a, uint32_t b);

} // extern "C"

我需要怎么做才能找到 jextract 来查找这些文件?

What do I need to do to get jextract to find these files?

推荐答案

正确的命令是 jextract -C -x -C c ++ -I/Library/Developer/CommandLineTools/usr/include/c ++/v1 -tadder -o adder.jar bindings.h .

将 -x c ++ 传递给clang，包括 -I 指定的路径.

Pass -x c++ to clang, include the path specified by -I.

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