Use libcore

Author: Phaiax

Cargo.toml

@@ -11,7 +11,7 @@ rustc-cfg = "0.2.0"
 [dependencies]
 
 [dependencies.rlibc]
-git = "https://github.com/alexcrichton/rlibc"
+git = "https://github.com/phaiax/rlibc"
 optional = true
 
 [dev-dependencies]
@@ -25,4 +25,14 @@ compiler-rt = { path = "compiler-rt" }
 c = []
 weak = ["rlibc/weak"]
 
+[target.thumbv6m-none-eabi.dependencies]
+rust-libcore = "*"
+
+[target.thumbv7m-none-eabi.dependencies]
+rust-libcore = "*"
+
+[target.thumbv7em-none-eabi.dependencies]
+rust-libcore = "*"
+
+
 [workspace]