When attempting to linking against a statically compiled Rust library some symbols cannot be found. The static library depends on another crate. Some of the undefined symbols relate to math functions: gcc main.c -o main -Ltarget/debug -lrust /usr/bin/ld: target/debug/librust.a(num_bigint-4e3863677…

Add --print native-static-libs to the rustc commandline when compiling the staticlib. Eg using cargo rustc -- --print native-static-libs. This will make rustc emit a warning listing all necessary linker flags.

Linking against static Rust library: missing symbols from external crate

help

macrolamp November 24, 2023, 10:10am 3

Using --print native-static-libs helps in finding all the dependencies. Coincidentially, I just found the answer in yet another thread

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Linking against static Rust library: missing symbols from external crate

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