使用build.rs显式配置仍无法链接ARPACK C库问题排查

背景 #

已完成ARPACK的编译，生成了静态库文件libarpack.a，并编写了对应的build.rs用于配置Cargo链接该库：

use std::env;
use std::path::Path;

fn main() {
    // 获取包含Cargo.toml的工作区根目录路径
    let workspace_root =
        env::var("CARGO_MANIFEST_DIR").expect("CARGO_MANIFEST_DIR not set");

    // 定义相对于工作区根目录的本地库路径
    let lib_path = Path::new(&workspace_root).join("arpack-ng/build/");

    println!("cargo:warning={}", lib_path.display());

    // 告知Cargo查找本地库的路径及链接静态库
    println!("cargo:rustc-link-search=native={}", lib_path.display());
    println!("cargo:rustc-link-lib=static=arpack");
}

编译错误 #

执行编译时出现链接器未定义引用错误：

= note: /usr/bin/ld: /home/makogan/rust_never_engine/crates/algebra/target/debug/deps/algebra-8ab0fc9a1c48e81c.8q7c32k90oqy6djs87syi3nmg.rcgu.o: in function `algebra::eigen_decomposition::faer_arpack_symmetric_f64':
          /home/makogan/rust_never_engine/crates/algebra/src/eigen_decomposition.rs:150:(.text._ZN7algebra19eigen_decomposition25faer_arpack_symmetric_f6417h42c779a97fe8f680E+0xa27): undefined reference to `dsaupd_c'
          /usr/bin/ld: /home/makogan/rust_never_engine/crates/algebra/src/eigen_decomposition.rs:199:(.text._ZN7algebra19eigen_decomposition25faer_arpack_symmetric_f6417h42c779a97fe8f680E+0x2b7d): undefined reference to `dseupd_c'
          collect2: error: ld returned 1 exit status

 = note: some `extern` functions couldn't be found; some native libraries may need to be installed or have their path specified
  = note: use the `-l` flag to specify native libraries to link
  = note: use the `cargo:rustc-link-lib` directive to specify the native libraries to link with Cargo (see https://doc.rust-lang.org/cargo/reference/build-scripts.html#rustc-link-lib)

The following warnings were emitted during compilation:

warning: algebra@0.1.0: /home/makogan/rust_never_engine/crates/algebra/arpack-ng/build/

已排查情况 #

• 确认libarpack.a存在于build.rs指定的路径中，路径配置无误
• 检查静态库符号后发现，库中仅存在dsaupd_符号，而非代码中引用的dsaupd_c
• 启用ICB选项重新编译ARPACK后，链接时又出现libgfortran相关符号缺失的问题

内容的提问来源于stack exchange，提问作者Makogan