Edition 2018

Cargo.toml

@@ -7,12 +7,13 @@ license = "ISC"
 homepage = "https://github.com/jedisct1/rust-precision"
 repository = "https://github.com/jedisct1/rust-precision"
 description = "Low overhead, high precision measurement crate"
+edition = "2018"
 
 [dependencies]
 libc = "0.2"
 
 [build-dependencies]
-gcc = "0.3"
+cc = "1"
 rustc_version = "0.2"
 
 [profile.release]

build.rs

@@ -1,5 +1,4 @@
-extern crate gcc;
-extern crate rustc_version;
+use cc;
 
 use rustc_version::{version_meta, Channel};
 
@@ -13,7 +12,7 @@ fn main() {
     if using_nightly && asm_capable_target {
         println!("cargo:rustc-cfg=asm");
     } else {
-        gcc::Build::new()
+        cc::Build::new()
             .file("src/cpucounter.c")
             .flag_if_supported("-fomit-frame-pointer")
             .opt_level(3)

src/lib.rs

@@ -23,7 +23,6 @@
 //! let elapsed_total_secs = elapsed_total.as_secs_f64(&p);
 //! let hw_ticks = elapsed_total.ticks();
 //! ```
-extern crate libc;
 
 mod config;
 mod cpucounter;