feat: provide configure_args api (#113)

This API is intended to parallel build_args, except to provide
additional arguments during the configure stage.

Author: bitwalker

src/lib.rs

@@ -67,6 +67,7 @@ pub struct Config {
     host: Option<String>,
     out_dir: Option<PathBuf>,
     profile: Option<String>,
+    configure_args: Vec<OsString>,
     build_args: Vec<OsString>,
     cmake_target: Option<String>,
     env: Vec<(OsString, OsString)>,
@@ -188,6 +189,7 @@ impl Config {
             out_dir: None,
             target: None,
             host: None,
+            configure_args: Vec::new(),
             build_args: Vec::new(),
             cmake_target: None,
             env: Vec::new(),
@@ -318,6 +320,12 @@ impl Config {
         self
     }
 
+    /// Add an argument to the `cmake` configure step
+    pub fn configure_arg<A: AsRef<OsStr>>(&mut self, arg: A) -> &mut Config {
+        self.configure_args.push(arg.as_ref().to_owned());
+        self
+    }
+
     /// Add an argument to the final `cmake` build step
     pub fn build_arg<A: AsRef<OsStr>>(&mut self, arg: A) -> &mut Config {
         self.build_args.push(arg.as_ref().to_owned());
@@ -727,6 +735,7 @@ impl Config {
         }
 
         if self.always_configure || !build.join("CMakeCache.txt").exists() {
+            cmd.args(&self.configure_args);
             run(cmd.env("CMAKE_PREFIX_PATH", cmake_prefix_path), "cmake");
         } else {
             println!("CMake project was already configured. Skipping configuration step.");