Add dlib support for jack-sys. (#161)

Compiling with feature `dlopen` will allow dynamically loading the library.

Author: wmedrano

.github/workflows/rust.yml

@@ -24,5 +24,5 @@ jobs:
         run: cargo clippy --all-targets --all-features -- -D clippy::all
       - name: Build
         run: cargo build --verbose
-      - name: Run tests
+      - name: Run Tests
         run: RUST_TEST_THREADS=1 cargo test --verbose

Cargo.toml

@@ -12,7 +12,8 @@ version = "0.8.4"
 
 [dependencies]
 bitflags = "1"
-jack-sys = {path = "./jack-sys", version = "0.2.3"}
+dlib = "0.5"
+jack-sys = {path = "./jack-sys"}
 lazy_static = "1.4"
 libc = "0.2"
 log = "0.4"

jack-sys/Cargo.toml

@@ -1,17 +1,24 @@
 [package]
-name = "jack-sys"
-version = "0.2.3"
-edition = "2018"
 authors = ["Patrick Reisert"]
 description = "Low-level binding to the JACK audio API."
-repository = "https://github.com/RustAudio/rust-jack/tree/main/jack-sys"
+edition = "2018"
 license = "MIT OR Apache-2.0"
 links = "jack"
+name = "jack-sys"
+repository = "https://github.com/RustAudio/rust-jack/tree/main/jack-sys"
+version = "0.3.0"
 
 [dependencies]
-libc = "0.2"
-libloading = "0.6"
+dlib = "0.5"
+dlopen = {version = "0.1", optional = true}
 lazy_static = "1.4"
+libc = "0.2"
+libloading = "0.7"
 
 [build-dependencies]
 pkg-config = "0.3"
+
+[features]
+# If dlopen is set, then dlib must be used to call jack-sys functions.  See
+# https://github.com/vberger/dlib.
+default = []