Maraiah/tycho/build.rs

use std::{io::prelude::*, path::{Path, PathBuf}};

fn gen_bindings(out_dir: &Path)
{
   use rust_qt_binding_generator::{configuration, generate_bindings};

   let mut config = configuration::parse("bindings.json").unwrap();

   config.overwrite_implementation = true;
   config.cpp_file = out_dir.join("bindings.cc");
   config.rust.dir = out_dir.to_path_buf();

   generate_bindings(&config).unwrap();
}

fn cxx_build() -> PathBuf
{
   let mut config = cmake::Config::new(".");

   if cfg!(debug_assertions) {
      config.cxxflag("-DTYCHO_DEBUG_ASSERTIONS");
   }

   config.build()
}

fn get_link_dirs(lnk: &Path) -> Vec<PathBuf>
{
   let mut dirs = Vec::new();

   let lnk = std::fs::File::open(lnk).unwrap();
   let lnk = std::io::BufReader::new(lnk);

   for path in lnk.lines() {
      let path = PathBuf::from(path.unwrap());
      let path = path.parent().unwrap();

      let path = if cfg!(target_os = "macos") {
         path.parent().unwrap()
      } else {
         path
      };

      dirs.push(path.to_path_buf());
   }

   dirs
}

fn main()
{
   let (lty, dty, qtpre, cxx) = if cfg!(target_os = "macos") {
      ("framework", "framework", "Qt", "c++")
   } else {
      ("dylib", "native", "Qt5", "stdc++")
   };

   let out_dir = PathBuf::from(std::env::var("OUT_DIR").unwrap());

   gen_bindings(&out_dir);

   let cxx_dir = cxx_build();
   let lib_dir = cxx_dir.join("lib");
   let etc_dir = cxx_dir.join("etc");

   println!("cargo:rustc-link-search=native={}", lib_dir.display());
   println!("cargo:rustc-link-lib=static=maraiah-tycho-hermes");

   let dirs = get_link_dirs(&etc_dir.join("link.txt"));

   for path in dirs {
      println!("cargo:rustc-link-search={}={}", dty, path.display());
   }

   println!("cargo:rustc-link-lib={}={}Core", lty, qtpre);
   println!("cargo:rustc-link-lib={}={}Widgets", lty, qtpre);
   println!("cargo:rustc-link-lib={}={}Gui", lty, qtpre);

   println!("cargo:rustc-link-lib=dylib={}", cxx);
}

// EOF