Failing to find -lglfw on x86_64-unknown-linux-gnu because of wrong name/path

[TrevorCow]

When trying to compile glfw (and thus glfw-sys) with the src-build flag on x86_64-unknown-linux-gnu, it fails to build the project with a linking error:
rust-lld: error: unable to find library -lglfw.

I found 2 problems with the build script that fixed it for me and could submit a pull request but I don't know if this is the "correct" way.

The 2 problems:

1. It is searching for glfw when the built binary file is glfw3 (glfw-sys/out/lib64/libglfw3.a)
2. It adds the search path [PROJECT_DIR]/target/debug/build/glfw-sys-HASH/out/lib instead of .../lib64

Changing the build script to on line 67 to output the correct library name glfw3 and line 257 from lib to lib64 fixed the linking errors for me.

So I guess the only question I have is when does glfw output to lib64 rather than lib (Maybe on 32 bit? Or if it even does anymore, this may just be left over) and is the output name ever just libglfw.a or is it always now libglfw3.a?

[TrevorCow]

Using master I think maybe the naming is fine, (idk why it was building the static library I don't think I had that feature on), but the path still needed to be corrected

[davidhozic]

What exactly did you change to make it link dynamically? I tried changing things to lib64 and lib, but it still doesn't work.

[davidhozic]

nvm, I managed to get it working

[TrevorCow]

What exactly did you change to make it link dynamically? I tried changing things to lib64 and lib, but it still doesn't work.

I'm not quite sure actually. I just checked, and the only difference is patching glfw-sys, so it might just be something between 6.0.0 and the master branch.

Commenting and uncommenting the patch changes the behavior.
Commented (so using release 6.0.0) -> builds libglfw3.a
Uncommented (so using my patch, which only changes the folder name now) -> builds libglfw.so, libglfw.so.3, and libglfw.so.3.4

[dependencies]
wgpu = "26.0.1"
glfw = { version = "0.60.0" , default-features = false, features = [
    "image",
    "vulkan",
    "log",
    "wayland",
#    "x11",
    "raw-window-handle-v0-6",
    "src-build"
]}
glfw-sys = { version = "6.0.0", default-features = false, features = ["src-build"]}
...

[patch.crates-io]
#glfw-sys = { path = "../../repos/rust_glfw-sys" }

[davidhozic]

Should be fixed in #37. I tested it on Fedora 34 and several Ubuntu versions.

Hope this project is still maintained as last commit was 5 months ago.

[davidhozic]

Just to verify that there is nothing else wrong @TrevorCow . Does adding the following to Cargo.toml fix your problems?

[patch.crates-io]
glfw-sys = {git = "https://github.com/davidhozic/glfw-sys.git", branch = "patch-1"}