Merge #708

708: runtime-c-api: not installing cranelift if not necessary r=Hywan a=YaronWittenstein

having `default-features = false` lets us install the `runtime-c-api` with `default-backend-singlepass` without installing also `cranelift`

Co-authored-by: Yaron Wittenstein <yaron.wittenstein@gmail.com>

Author: bors[bot]

lib/runtime-c-api/Cargo.toml

@@ -15,16 +15,21 @@ crate-type = ["cdylib", "rlib", "staticlib"]
 libc = "0.2.60"
 
 [dependencies.wasmer-runtime]
+default-features = false
 path = "../runtime"
 version = "0.6.0"
 
 [dependencies.wasmer-runtime-core]
+default-features = false
 path = "../runtime-core"
 version = "0.6.0"
 
 [features]
+default = ["cranelift-backend"]
 debug = ["wasmer-runtime/debug"]
-llvm = ["wasmer-runtime/llvm"]
+cranelift-backend = ["wasmer-runtime/cranelift", "wasmer-runtime/default-backend-cranelift"]
+llvm-backend = ["wasmer-runtime/llvm", "wasmer-runtime/default-backend-llvm"]
+singlepass-backend = ["wasmer-runtime/singlepass", "wasmer-runtime/default-backend-singlepass"]
 
 [build-dependencies]
 cbindgen = "0.9.0"