// update build.rs file as:
extern crate cc;
fn main() {
//println!("cargo:rustc-link-search=all=src"); // works like "rustc -L src ..."
//println!("cargo:rustc-link-lib=dylib=doubler.o"); // works like "rustc -l doubler.o"
cc::Build::new()
.file("src/fix_store.c")
.include("/usr/local/opt/openssl/include")
.compile("libfixstore.a");
}