Replace cbindgen with cargo-c

c/Cargo.toml

@@ -1,9 +1,8 @@
 [package]
-name = "pathfinder_c"
+name = "pathfinder"
 version = "0.1.0"
 authors = ["Patrick Walton <[email protected]>"]
 edition = "2018"
-build = "build.rs"
 
 [lib]
 crate-type = ["staticlib"]
@@ -47,6 +46,3 @@ metal = "0.17"
 
 [target.'cfg(target_os = "macos")'.dependencies.pathfinder_metal]
 path = "../metal"
-
-[build-dependencies]
-cbindgen = "0.13"

c/README.md

@@ -0,0 +1,27 @@
+# Pathfinder C bindings
+
+To generate these bindings, you first need to install [cargo-c](https://crates.io/crates/cargo-c).
+
+* On ArchLinux:
+  ```
+  # pacman -S cargo-c
+  ```
+* Anywhere else:
+  ```
+  $ cargo install cargo-c
+  ```
+
+Now you can generate the C header, library and pkg-config file, and install them for your user using this command:
+```
+$ cargo cinstall --prefix=$HOME/.local
+```
+
+Or if you want to install it system-wide:
+```
+# cargo cinstall --prefix=/usr/local
+```
+
+Another option, for packagers, is to install it to a temporary directory then put its content in a package:
+```
+$ cargo cinstall --prefix=/usr --destdir=$XDG_RUNTIME_DIR/staging
+```