Where are the shared and static libraries of the Rust standard library?

Question

I am trying to compile my Rust project with dynamic linking to reduce the size and provide .so (or .dll on Windows) files with the application just like Qt does for Android. I read Why are Rust executables so huge? and compiled with

cargo rustc  -- -C prefer-dynamic

When I run my program, I get this error:

 % target/debug/t_pro 
target/debug/t_pro: error while loading shared libraries: libstd-a021829e87e39dcf.so: cannot open shared object file: No such file or directory

Please provide additional information: what program are you trying to build? Which compiler version, which toolchain, and which host OS? — E_net4, Nov 22 '18 at 19:10
Most operating systems come with tools to search the hard drive for files of a specific name. Have you tried one of those? — Shepmaster, Nov 22 '18 at 21:35

score 8 · Answer 1 · edited Nov 25 '18 at 14:50

8

I got an answer on Reddit.

rustc --print=sysroot

In my case, the .so files are in /home/username/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/lib and .rlib are in /home/username/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/lib/rustlib.

edited Nov 25 '18 at 14:50

Shepmaster

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answered Nov 23 '18 at 12:01

LightSith

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`export LD_LIBRARY_PATH+=:$(rustc --print=sysroot)/lib` worked perfect for me – Tinmarino Mar 17 '21 at 20:28
I'm on mac, so I had to use DYLD_FALLBACK_LIBRARY_PATH="$DYLD_FALLBACK_LIBRARY_PATH:$(rustc --print=sysroot)/lib" – Daniel Waltrip Apr 16 '23 at 18:57

score 2 · Accepted Answer · answered Nov 22 '18 at 21:37

The libraries are installed wherever you chose to install Rust. I use rustup on macOS, so they are installed in ~/.rustup/toolchains/*whatever*/lib/ for me.

Use your operating system's tools to search for files of a specific name.

Where are the shared and static libraries of the Rust standard library?

2 Answers2